| hepatitis-b virus in bedbugs (cimex hemipterus) from senegal. | bedbugs of the species cimex hemipterus (f) were collected on four separate occasions from the bedding in the huts of village dwellers in senegal, west africa. hepatitis-b surface antigen (hbsag) was detected in unengorged nymph and adult bedbugs in each of the first three collections. 3 of 28 such specimens were hbsag(+) in the first collection and 3 of 17 specimens were positive in the second collection. in the third, 6 of 9 were hbsag(+) when the bed occupant was known to be hbsag(+). 2 of th ... | 1977 | 69829 |
| persistence of hepatitis b surface antigen in the bedbug cimex hemipterus (fabr.). | the fate of hepatitis b virus in the bedbug was investigated to assess this insect's potential as a vector. colony-reared cimex hemipterus (fabr.) were fed once on blood positive for hepatitis b surface antigen (hbsag). the insects were sampled at intervals thereafter and tested for hbsag by radioimmunoassay. hbsag persisted for up to six weeks in the bedbug's body after a single hbsag-positive meal, during which time several further hbsag-negative blood meals were taken. this result explains th ... | 1979 | 501152 |
| experimental assessment of bedbugs (cimex lectularius and cimex hemipterus) and mosquitoes (aedes aegypti formosus) as vectors of human immunodeficiency virus. | in vitro experiments were conducted to assess whether bedbugs (cimex lectularius and cimex hemipterus) and mosquitoes (aedes aegypti formosus) could act as vectors of hiv. these insects engorged through a membrane on a blood-virus mixture. female bedbugs were larger than males and took larger blood-meals when fed to repletion. it was determined that the full blood-meal of a female bedbug contained 0.09 x 10(5) tissue culture infectious doses (tcid) of virus and a male 0.07 x 10(5) tcid, while pa ... | 1987 | 2450552 |
| potential for insect transmission of hiv: experimental exposure of cimex hemipterus and toxorhynchites amboinensis to human immunodeficiency virus. | human immunodeficiency virus (hiv) was detected in bedbugs (cimex hemipterus) up to 8 d after oral exposure to highly concentrated virus in blood meals, but no virus replication was observed. hiv did not replicate in either intraabdominally inoculated bedbugs or intrathoracically inoculated mosquitoes (toxorhynchites amboinensis). the virus was not detected in bedbug feces. mechanical transmission of hiv by bedbugs could not be demonstrated in an in vitro model. the persistence of hiv in an inse ... | 1989 | 2479697 |
| permethrin-impregnated bednets reduce nuisance arthropods in gambian houses. | the prevalence of bedbugs (cimex hemipterus l.), chicken ticks (argas persicus oken) and headlice (pediculus capitis de geer) was surveyed in a rural area of the gambia. at the beginning of the study 37.5% of children's beds were infested with bedbugs and 3.9% with chicken ticks, whilst the prevalence rate of pediculosis in children under 10 years old was 28.8%. both bedbugs and headlice were clustered within compounds. headlice prevalence increased with hair length and they were more common on ... | 1989 | 2519687 |
| the effects on domestic infestations of cimex lectularius bedbugs of interspecific mating with c. hemipterus. | interspecific mating between male cimex hemipterus and female c. lectularius bedbugs (hemiptera: cimicidae) occurs freely in the laboratory, even when many female c. hemipterus are available. longevity and fertile egg production of female c. lectularius are reduced by mating with male c. hemipterus. in kwazulu, south africa, a correlation exists between the percentage of c. lectularius females which are interspecifically mated and the predominance of c. hemipterus in mixed domestic infestations ... | 1989 | 2519691 |
| a field study of mating between two species of bedbug in northern kwazulu, south africa. | the interspecific cross-mating of female cimex lectularius linnaeus with male cimex hemipterus (fabricius) results in a visible mark developing in the female ectospermalege. this mark has been used to record the frequency of mating between female c.lectularius and male c.hemipterus in sympatric wild populations in a ddt-sprayed area of northern kwazulu, south africa. a high percentage (11/16 = 69%) of c.lectularius females were marked, showing that these two species mate in nature. | 1988 | 2980185 |
| production of a hybrid between the bedbugs cimex hemipterus and cimex lectularius. | of 479 eggs laid by female cimex lectularius linnaeus and c.hemipterus (fabricius) mated by males of the other species, one was fertile and gave rise to a first stage nymph. the egg showed sculpturing typical of c.hemipterus, the female parent, and the nymph conformed to the narrow pronotum and abdomen of this species, being significantly different from c.lectularius in the width of the abdomen. because the orientation and lengths of the bristles on the sides of the abdomen were distinctly diffe ... | 1988 | 2980186 |
| the occurrence of the bedbugs cimex hemipterus and cimex lectularius in northern natal and kwazulu, south africa. | two species of anthropophilic bedbugs, cimex lectularius and c. hemipterus, infest dwellings in kwazulu, the known range of the latter extending to 28 degrees 15's. c. hemipterus is the more common species in kwazulu north of 27 degrees 15'. the pattern of distribution of c. hemipterus in south africa is consistent with the species requiring a tropical climate, being a more recent invader than c. lectularius, and being able to thrive sympatrically with the latter species. | 1987 | 3686639 |
| a note on the susceptibility of the tropical bed bug cimex hemipterus to wuchereria bancrofti in ceylon. | | 1972 | 5054494 |
| sex differences in size of the blood meal in the bed bug cimex hemipterus (hemiptera: cimicidae). | | 1982 | 7120297 |
| excretion of hepatitis b surface antigen by the bedbug cimex hemipterus fabr. | | 1980 | 7210138 |
| transfer of radioactive tracer by the bedbug cimex hemipterus (hemiptera: cimicidae): a model for mechanical transmission of hepatitis b virus. | | 1981 | 7288836 |
| comparative activity of three repellents against bedbugs cimex hemipterus (fabr.). | comparative activity of three repellents viz., diethyl-m-toluamide (deet), diethyl phenyl-acetamide (depa) and dimethylphthalate (dmp) against bedbugs cimex hemipterus (fabr) was studied by applying repellent solution on the shaven skin of rabbits. deet (tech. grade) 20mgai/cm2 exhibited 93 and 83 per cent repellency after 2 and 8 h respectively, while depa (tech. grade) at this concentration exhibited 90 and 71 per cent repellency. deet and depa at 75 per cent concentration (15mgai/cm2) showed ... | 1995 | 7558205 |
| pyralis pictalis curt. (pyralidae: lepidoptera) larvae as predators of eggs of bed bug, cimex hemipterus fab. (cimicidae: hemiptera). | | 1960 | 13831355 |
| failure of wuchereria bancrofti and brugia malayi to develop in the tropical bedbug cimex hemipterus. | | 1962 | 14006430 |
| resistance to dieldrin and ddt and sensitivity to malathion in the bed-bug cimex hemipterus in malaya. | | 1960 | 14437086 |
| notes on some ectoparasites received by the medical entomology unit, institute for medical research. | there were a spate of recent complaints of insect bites and the entomological specimens received from various sources were identified to be those of cat flea (ctenocephalides felis) and rat flea (xenopsylla cheopis), the tropical bed-bug (cimex hemipterus) and the dog louse (heterodoxus spiniger). only the fleas and the bed-bug are known to attack humans. | 2006 | 17041562 |
| the occurrence of the tropical bedbug (cimex hemipterus, fabricius) in poultry barns in israel. | the occurrence of the tropical bedbug (cimex hemipterus fabricius) in poultry houses in israel is described. despite the heavy infestation serious losses have not been registered and no clinical signs observed. treatment of the barns and accessories with 2% malathion emulsion gave good results. the parasite invaded human habitations as well. | 1987 | 18766620 |
| ultrastructure of the salivary glands in cimex hemipterus (hemiptera: cimicidae). | cimex hemipterus (fabricius) is a hematophagous insect that can be an experimental host of trypanosoma cruzi and may play a role as vector of chagas' disease. this work analyzed the structure of the salivary glands of c. hemipterus. the secretory portion of main salivary glands has a single oval lobe that is translucent and is formed from a simple columnar epithelium lined by muscle cells. the gland cells are high, with one or two spherical nuclei, nucleolus, and some condensed chromatin. the ce ... | 2008 | 19058621 |
| the feeding process of cimex lectularius (linnaeus 1758) and cimex hemipterus (fabricius 1803) on different bloodmeal sources. | the bedbugs cimex lectularius and cimex hemipterus are obligate hematophages in all their nymphal instars as well as in the adult stage. the efficiency with which the insects obtain blood from their hosts is directly related to their population dynamics. in the present study we compared the feeding process and salivary content in individuals of these two species when fed on different blood sources or host sites, using a cibarial pump electromyogram. females ingested more blood than males but nee ... | 2009 | 19712677 |
| fecundity, nymphal development and longevity of field-collected tropical bedbugs, cimex hemipterus. | this study examined the fecundity, oviposition, nymphal development and longevity of field-collected samples of the tropical bedbug, cimex hemipterus (fabricius) (hemiptera: cimicidae). under environmental conditions of 26+/-2 degrees c, 70 +/- 5% relative humidity and a 12-h photoperiod, with bloodmeals provided by a human host, six strains of tropical bedbug had a fecundity of up to 50 eggs per lifetime, over 11-14 oviposition cycles. increased feeding frequency improved fecundity. after feedi ... | 2010 | 20202109 |
| effects of life stages and feeding regimes on active movement behavior of the tropical bed bug, cimex hemipterus (hemiptera: cimicidae). | this study examined the effects of different life stages (first, second, third, fourth, and five instars; adult females and adult males) and feeding regimes (starved and blood fed) on the active movement activity of the tropical bed bug, cimex hemipterus (f.), under mixed-stage conditions. we used an extended arena made from tygon tube coils and observed the movement frequency and movement distance at selected time intervals up to 120 h. the fifth instars and adult males and females showed signi ... | 2010 | 20496576 |
| the life cycle and effectiveness of insecticides against the bed bugs of thailand. | the purpose of this study was to determine the life cycle and effectiveness of insecticides against bed bugs in thailand. bed bugs from dwelling places in chon buri and chiang mai provinces were determined to be cimex hemipterus and cimex lectularius, respectively. both bed bug species were reared by feeding on rabbit blood at 2-day intervals in laboratory conditions at 28-32 degrees c with 75% relative humidity. the duration from egg to adult stages took 39.9 +/- 7.0 and 36.9 +/- 8.2 days in c. ... | 2010 | 20578541 |
| survey of bed bugs in infested premises in malaysia and singapore. | a total of 54 bed bug-infested sites (hotels, public accommodations, and residential premises) in malaysia and singapore was surveyed between july, 2005 and december, 2008. only one species of bed bug was found, the tropical bed bug cimex hemipterus (fabricius). bed bug infestations were common in hotels and public accommodations when compared to residential premises. the three most common locations of infestation within an infested premise were the bedding (31.1%), the headboard (30.3%), and cr ... | 2010 | 20618653 |
| effects of temperature and humidity on the survival and water loss of cimex hemipterus (hemiptera: cimicidae). | the effect of temperature and humidity on the survival and water loss of the tropical bed bug, cimex hemipterus (f.), was studied using two field-collected strains. insects were exposed to temperatures ranging from 20 to 45 degrees c and relative humidities (rhs) of 33, 75, and 100%. c. hemipterus survived longest under the interaction of low temperature (20 degrees c) and high rh (75-100%). survival and water loss were significantly affected (p < 0.01) by temperature and rh (either singly, or i ... | 2010 | 21175045 |
| bedbugs and infectious diseases. | bedbugs are brown and flat hematophagous insects. the 2 cosmopolite species, cimex lectularius and cimex hemipterus, feed on humans and/or domestic animals, and recent outbreaks have been reported in occidental countries. site assessment for bedbug eradication is complex but can be assured, despite emerging insecticide resistance, by hiring a pest-control manager. the common dermatological presentation of bites is an itchy maculopapular wheal. urticarial reactions and anaphylaxis can also occur. ... | 2011 | 21288844 |
| surface contact toxicity and synergism of several insecticides against different stages of the tropical bed bug, cimex hemipterus (hemiptera: cimicidae). | five formulated insecticides (lambda-cyhalothrin at 10 mg m?², bifenthrin at 50 mg m?², fipronil at 10 mg m?², fenitrothion at 50 mg m?², imidacloprid at 5 mg m?²) and one active ingredient (ddt at 500 mg m?²) were evaluated using a surface contact method against early and late instars and adults of two strains of the tropical bed bug, cimex hemipterus (f.). synergism of lambda-cyhalothrin and fipronil using piperonyl butoxide (pbo) was also assessed. | 2011 | 21370390 |
| alarm pheromones and chemical communication in nymphs of the tropical bed bug cimex hemipterus (hemiptera: cimicidae). | the recent resurge of bed bug infestations (cimex spp.; cimicidae) and their resistance to commonly used pesticides calls for alternative methods of control. pheromones play an important role in environmentally sustainable methods for the management of many pest insects and may therefore be applicable for the control of bed bugs. the tropical bed bug, cimex hemipterus, is a temporary ectoparasite on humans and causes severe discomfort. compared to the common bed bug, cimex lectularius, little is ... | 2011 | 21479180 |
| Insecticide resistance in bedbugs in Thailand and laboratory evaluation of insecticides for the control of Cimex hemipterus and Cimex lectularius (Hemiptera: Cimicidae). | Bedbugs are found in many countries around the world, and in some regions they are resistant to numerous insecticides. This study surveyed bedbugs in Thailand and determined their resistance to insecticides. The surveys were carried out in six provinces that attract large numbers of foreign tourists: Bangkok, Chonburi, Chiang Mai, Ubon Ratchathani, Phuket, and Krabi. Bedbugs were collected from hotels and colonized in the laboratory to evaluate their resistance to insecticides. Cimex hemipterus ... | 2011 | 21936321 |
| the tropical bedbug cimex hemipterus near the southernmost extent of its range. | the average degree of infestation of cimex hemipterus in zulu huts in south africa is the same as that of c. lectularius. nymphal stages of c. hemipterus can be distinguished by head-width measurements and numbers of lateral pronotal hairs. | 2008 | 2278089 |
| bed bugs and possible transmission of human pathogens: a systematic review. | the global population of bed bugs (cimex lectularius and cimex hemipterus, family cimicidae) has undergone a significant resurgence since the late 1990s. this is likely due to an increase in global travel, trade, and the number of insecticide-resistant bed bugs. the global bed bug population is estimated to be increasing by 100-500 % annually. the worldwide spread of bed bugs is concerning, because they are a significant socioeconomic burden and a major concern to public health. according to the ... | 2016 | 27295087 |
| bed bugs: clinical relevance and control options. | since the late 1990s, bed bugs of the species cimex lectularius and cimex hemipterus have undergone a worldwide resurgence. these bed bugs are blood-sucking insects that readily bite humans. cutaneous reactions may occur and can start out as small macular lesions that can develop into distinctive wheals of around 5 cm in diameter, which are accompanied by intense itching. occasionally, bullous eruptions may result. if bed bugs are numerous, the patient can present with widespread urticaria or ey ... | 0 | 22232375 |
| bartonella quintana in cimex hemipterus, rwanda. | | 2013 | 24019440 |
| differences in climbing ability of cimex lectularius and cimex hemipterus (hemiptera: cimicidae). | the climbing abilities of two bed bug species, cimex lectularius l. and cimex hemipterus (f.), were determined by evaluating their escape rates from smooth surface pitfall traps using four commercial bed bug monitors (verifi bed bug detector, climbup insect interceptor, blackout bed bug detector, and sensci volcano bed bug detector). all detectors were used in the absence of lures or attractants. unlike c. lectularius, adult c. hemipterus were able to escape from all traps. on the other hand, no ... | 2017 | 28334370 |
| effects of different surfaces and insecticide carriers on residual insecticide bioassays against bed bugs, cimex spp. (hemiptera: cimicidae). | the performance of five insecticides (bendiocarb, deltamethrin, ddt, malathion, and imidacloprid) using three application methods (oil-based insecticide films on filter paper, and acetone-based insecticide deposits on two substrates: filter paper and glass) was assessed against a susceptible strain of cimex lectularius (l.) and two resistant strains of cimex hemipterus (f.). substrate type significantly affected (p < 0.05) the insecticide knockdown response of the susceptible strain in acetone-b ... | 2017 | 28115498 |
| evidence of tolerance to silica-based desiccant dusts in a pyrethroid-resistant strain of cimex lectularius (hemiptera: cimicidae). | insecticide resistance in bed bugs (cimex lectularius and cimex hemipterus) has become widespread, which has necessitated the development of new ipm (integrated pest management) strategies and products for the eradication of infestations. two promising options are the diatomaceous earth and silica gel-based desiccant dusts, both of which induce dehydration and eventual death upon bed bugs exposed to these products. however, the impact of underlying mechanisms that confer resistance to insecticid ... | 2016 | 27941664 |
| identification of putative kdr mutations in the tropical bed bug, cimex hemipterus (hemiptera: cimicidae). | bed bugs [both cimex hemipterus (f.) and cimex lectularius l.] are highly resistant to pyrethroids worldwide. an important resistance mechanism known as 'knockdown resistance' (kdr) is caused by genetic point mutations on the voltage-gated sodium channel (vgsc) gene. previous studies have identified two point mutations (v419l and l925i) on the vgsc gene in c. lectularius that are responsible for kdr-type resistance. however, the kdr mutations in c. hemipterus have not been investigated. | 2015 | 25132449 |
| morphology, ultrastructure and functional role of antennal sensilla in off-host aggregation by the bed bug, cimex lectularius. | after blood feeding on a host, bed bugs, cimex lectularius, assemble in aggregation sites away from the host. off-host aggregation is mediated by a combination of mechanical and chemical stimuli associated with bug feces. partial antennectomies indicated removal of flagellomeres did not affect aggregation, but removal of the whole pedicel or its distal half significantly reduced (p < 0.01) aggregation, suggesting that sensilla related to off-host aggregation occur on the distal half of the pedic ... | 2014 | 24412653 |
| efficacy of an essential oil-based pesticide for controlling bed bug (cimex lectularius) infestations in apartment buildings. | bed bugs (cimex lectularius l. and cimex hemipterus f.) are among the most difficult urban pests to manage. many essential oil-based bed bug control products that are considered reduced risk to mammals compared to synthetic insect neurotoxins have become commercially available, but their effectiveness as a stand-alone control method is unknown. this study assessed the field efficacy of an essential oil-based bed bug control product (ecoraider; a.i. 1% geraniol + 1% cedar oil + 2% sodium lauryl s ... | 2014 | 26462944 |
| human travel and traveling bedbugs. | a dramatic increase of reported bedbug (cimex lectularius and cimex hemipterus) infestations has been observed worldwide over the past decade. bedbug infestations have also been detected across a wide range of travel accommodations, regardless of their comfort and hygiene levels. travelers are increasingly exposed to the risks of bedbug bites, infestation of personal belongings, and subsequent contamination of newly visited accommodations and their homes. | 2012 | 23379708 |
| gaseous chlorine dioxide as an alternative for bedbug control. | this study evaluated the efficacy of gaseous chlorine dioxide (clo(2)) for extermination of bedbugs (cimex lectularius and cimex hemipterus). | 2012 | 22476276 |
| bed bugs: the australian response. | australia has experienced a sudden and unexpected resurgence in bed bug infestations from both cimex lectularius l. and cimex hemipterus f. a survey in 2006 revealed that infestations had increased across the nation by an average of 4,500% since the start of the decade. in response, a multi-disciplinary approach to combat the rise of this public health pest was implemented and involved the coordinated efforts of several organizations. the key components of the strategy included the introduction ... | 2011 | 26467616 |
| bed bug infestations and control practices in china: implications for fighting the global bed bug resurgence. | the bed bug resurgence in north america, europe, and australia has elicited interest in investigating the causes of the widespread and increasing infestations and in developing more effective control strategies. in order to extend global perspectives on bed bug management, we reviewed bed bug literature in china by searching five chinese language electronic databases. we conducted telephone interviews of staff from 77 health and epidemic prevention stations in six chinese cities in november 2010 ... | 2011 | 26467615 |
| identification of bat ectoparasite leptocimex inordinatus from bat-dwelling cave, kanchanaburi province, thailand. | bat bugs are blood-feeding insects of bats or warm blooded animals and humans. since 2011, leptocimex spp (heteroptera: cimicidae) has been reported in thailand. however, microscopic examination of leptocimex spp is complicated, especially when the entire body of the specimen is not available. to confirm the phenotypic identification of l. inordinatus from a limestone bat cave in thailand, partial fragments of mitochondrial cytochrome c oxidase subunit 1 (coi) gene and 16s mitochondrial ribosoma ... | 2016 | 27086421 |
| toxicities of selected essential oils, silicone oils, and paraffin oil against the common bed bug (hemiptera: cimicidae). | the common bed bug [cimex lectularius l. (hemiptera: cimicidae)] and tropical bed bug [cimex hemipterus f. (hemiptera: cimicidae)] resurged in the united states and many other countries over the past decades. the need for safe and effective bed bug control products propelled the development of numerous 'green insecticides', mostly with essential oils listed as active ingredients. various inorganic and organic oils also were used for bed bug management. however, there are no published studies on ... | 2017 | 29220500 |
| insecticide resistance and resistance mechanisms in bed bugs, cimex spp. (hemiptera: cimicidae). | the worldwide resurgence of bed bugs [both cimex lectularius l. and cimex hemipterus (f.)] over the past two decades is believed in large part to be due to the development of insecticide resistance. the transcriptomic and genomic studies since 2010, as well as morphological, biochemical and behavioral studies, have helped insecticide resistance research on bed bugs. multiple resistance mechanisms, including penetration resistance through thickening or remodelling of the cuticle, metabolic resist ... | 2017 | 28662724 |
| genetic diversity and phylogenetic relationships of cytochrome c oxidase subunit i in cimex hemipterus (hemiptera: cimicidae) populations in malaysia. | the tropical bed bug is scientifically recognized as a significant public health problem. while there is an increased awareness about their resurgence by medical and life science committees, efficient bed bug management still remains unresolved. the solution may soon arise, as information about bed bugs' infestation dynamics and systematics are becoming more distinguishable. recent developments in studies about bed bugs are based on molecular intervention by determining their genetic variation a ... | 2017 | 28399302 |
| bed bug dermatitis, description of two cases in rio de janeiro, brazil. | bed bugs are hematophagous insects which due to their morphological and biological characteristics are able to easily adapt themselves to human households. the authors describe two cases of dermatitis caused by bed bug bites in the city of rio de janeiro, brazil. patients presented linear lesions in the usual "breakfast, lunch and dinner" arrangement, suggesting this diagnosis. a visit to their dwellings showed infestation of insects identified as cimex hemipterus. the knowledge of these insects ... | 2015 | 25830996 |
| bed bug outbreak in a neonatal unit. | there has been a worldwide increase in bed bug infestations over the last 10-15 years. a major stigma is placed upon the institutions found to be infested. we report our experience with an outbreak of the tropical bed bug, cimex hemipterus, in a neonatal unit. the outbreak not only affected the admitted newborns and mothers by causing a wide variety of rashes and inducing sleeplessness, but also impinged upon the health professionals and their families by producing similar symptomology. it is im ... | 2015 | 25591490 |
| aggregation responses of cimex hemipterus f. to semiochemicals identified from their excreta. | bedbug cimex hemipterus lives in cracks and crevices, and shows aggregation activity in the harbourage containing its fecal matter. limited information is available on the chemicals influencing this aggregation behaviour in c. hemipterus. possible components responsible for aggregation, if identified and evaluated can be helpful in designing bedbug management. | 2014 | 25253216 |
| duplicated female receptacle organs for traumatic insemination in the tropical bed bug cimex hemipterus: adaptive variation or malformation? | during mating, male bed bugs (cimicidae) pierce the female abdomen to inject sperm using their needle-like genitalia. females evolved specialized paragenital organs (the spermalege and associated structures) to receive traumatically injected ejaculates. in leptocimex duplicatus, the spermalege is duplicated, but the evolutionary significance of this is unclear. in cimex hemipterus and c. lectularius, in which females normally develop a single spermalege on the right side of the abdomen, similar ... | 2014 | 24586643 |
| notes on midgut ultrastructure of cimex hemipterus (hemiptera: cimicidae). | this work studied the ultrastructure of the midgut cells of cimex hemipterus fabricius (hemiptera: cimicidae). the midgut of adult insects was analyzed on different days after a bloodmeal, and three anatomical regions with different digestive functions were apparent. in the anterior midgut, the digestive cells had many spherocrystals, lipid inclusions, and glycogen deposits, suggesting a role in water absorption, ion regulation, digestion, and storage of lipids and sugars. the digestive cells in ... | 2009 | 19496410 |
| high prevalence of bedbugs cimex hemipterus and cimex lectularis in camps for internally displaced persons in freetown, sierra leone: a pilot humanitarian investigation. | the prevalence of bedbugs cimex hemipera and c. lectularis was investigated in camps for the internally displaced persons (idps) in freetown, sierra leone. two hundred and thirty eight rooms were searched during the day and at night, and 233 (98%) of those rooms in 30 booths were infested with different life cycle stages of bedbugs. there hundred and ninety-eight (68%) of the bedbugs were adults, 145 (24.8%) were nymphs of various instars, and 41 (7%) were clusters of eggs. significantly (p > 0. ... | 2015 | 12665260 |
| pyrethroid resistance in tropical bedbugs, cimex hemipterus, associated with use of treated bednets. | when tanzanian villages were provided with pyrethroid-treated bednets, bedbugs (cimicidae) disappeared; however, after about 6 years they have re-appeared in these villages. using a newly devised test-kit, susceptibility tests of bedbugs cimex hemipterus (fabricius) from five of these villages showed that there is resistance to permethrin and alphacypermethrin in bedbugs from each of the villages, in contrast to those from five villages without treated nets. circumstantial evidence indicates tha ... | 2002 | 12510899 |
| changes in the relative frequency of occurrence of infestations of two sympatric species of bedbug in northern natal and kwazulu, south africa. | between 1983 and 1988 the frequency of cimex hemipterus infestations relative to c. lectularius increased near the mozambique border and around main roads in the nkundusi-mfekayi area of south africa (28 degrees 15's; 30 degrees 23' e). in areas where both species were common, the observed number of doubly-infested huts equalled the expected. a hut infested by both bedbug species showed a significant change to a higher proportion of c. hemipterus in the adult population over 2 months. the genera ... | 2006 | 2609383 |
| studies on the control of ddt- and dieldrin-resistant strain of bedbugs (cimex hemipterus). | | 1965 | 14318097 |
| confirmation of ddt and dieldrin resistance and malathion sensitivity in cimex hemipterus. | | 1964 | 14240065 |
| resistance to dieldrin of cimex hemipterus (fabricius). | | 1962 | 13862375 |
| [sensitivity of cimex hemipterus fabr. 1803 to ddt, to dieldrin and to ddt plus diazinon and dieldrin plus diazinon mixtures in the area of miandrivazo, madagascar]. | | 2013 | 13902374 |
| new methods for the maintenance of a laboratory colony of bed-bugs, cimex hemipterus fabricius, with observations on its biology. | | 1961 | 14005331 |
| [resistance to dieldrin of cimex hemipterus fab, in dahomey, occidental africa]. | | 2016 | 14402836 |
| dieldrin-resistance in cimex hemipterus fabricius in the pare area of north-east tanganyika. | | 1958 | 20604041 |
| a summary of recent insecticidal tests on some insects of medical importance in taiwan. | the author describes some investigations carried out on a number of insects of medical importance in taiwan (six species of anopheles, one species of culex, one of aëdes, two subspecies of musca domestica and one species of cimex) with the object of finding out whether resistance to ddt and bhc had developed among them as a result of the insect-control campaigns which have been in operation in the island since 1948.of the anophelines, certain strains of a. minimus and a. h. sinensis were found t ... | 1958 | 13536806 |