| the parasitoid complex of parthenolecanium corni bouché in the city of tbilisi and its surroundings and comparison with some other european countries. | the european fruit lecanium (efl), parthenolecanium corni bouché (hemiptera: coccoidea), is a common and harmful soft scale, which attacks fraxinus oxycarpa willd. and other ornamental and orchard plants in tbilisi, georgia. this study investigates the phenology, degree of plant damage and effect of parasitoids on this scale in tbilisi, a densely populated area. we present data on the 32 species of chalcidoid parasitoids recorded from efl in georgia and south-eastern europe. the scale is heavily ... | 2008 | 18076774 |
| life history of parthenolecanium spp. (hemiptera: coccidae) in urban landscapes of the southeastern united states. | this study was conducted to better understand the life history of parthenolecanium corni (bouché) and parthenolecanium quercifex (fitch) (hemiptera: coccidae), and to develop degree-day models for crawler emergence of the two soft scale species in georgia, north carolina, south carolina, and virginia. both species were univoltine in the southeastern united states. in south carolina, eggs hatched from mid-april to early june; second instars began to appear in september and migrated to twigs to ov ... | 2017 | 28854655 |
| pseudococcus maritimus (hemiptera: pseudococcidae) and parthenolecanium corni (hemiptera: coccidae) are capable of transmitting grapevine leafroll-associated virus 3 between vitis x labruscana and vitis vinifera. | the grape mealybug, pseudococcus maritimus (ehrhorn), and european fruit lecanium scale, parthenolecanium corni (bouché), are the predominant species of coccoidea in washington state vineyards. the grape mealybug has been established as a vector of grapevine leafroll-associated virus 3 (glrav-3) between wine grape (vitis vinifera l.) cultivars, elevating its pest status. the objective of this study was to determine if glrav-3 could be transmitted between vitis x labruscana l. and v. vinifera by ... | 2013 | 24468559 |
| diversity of ampeloviruses in mealybug and soft scale vectors and in grapevine hosts from leafroll-affected vineyards. | the occurrence and diversity of grapevine leafroll-associated virus 1 (glrav-1) and grapevine leafroll-associated virus 3 (glrav-3) in the soft scales parthenolecanium corni and pulvinaria innumerabilis and in the mealybug pseudococcus maritimus was determined in leafroll-affected vineyards in the finger lakes region of new york. groups of 1 to 4 specimens were collected under loose grapevine bark and tested by reverse-transcription polymerase chain reaction (rt-pcr) for segments of the second d ... | 2009 | 19740031 |
| improving liquid bait programs for argentine ant control: bait station density. | argentine ants, linepithema humile (mayr), have a positive effect on populations of mealybugs (pseudococcus spp.) in california vineyards. previous studies have shown reductions in both ant activity and mealybug numbers after liquid ant baits were deployed in vineyards at densities of 85-620 bait stations/ha. however, bait station densities may need to be <85 bait stations/ha before bait-based strategies for ant control are economically comparable to spray-based insecticide treatments-a conditio ... | 2007 | 18284776 |
| slowing the spread of grapevine leafroll-associated viruses in commercial vineyards with insecticide control of the vector, pseudococcus maritimus (hemiptera: pseudococcidae). | vineyards were surveyed for grapevine leafroll-associated viruses and their insect vectors in new york state's finger lakes region in 2006-2008. grape mealybug, pseudococcus maritimus (erhorn) (hemiptera: pseudococcidae), european fruit lecanium, parthenolecanium corni (bouche), and cottony maple scale, pulvinaria acericola (walsh and riley) (hemiptera: coccidae) were identified as vector species in this region. an increase in the incidence of grapevine leafroll-associated virus 1 (glrav-1) and ... | 2015 | 26223949 |
| entomopathogenic fungi associated with exotic invasive insect pests in northeastern forests of the usa. | mycopathogens of economically important exotic invasive insects in forests of northeastern usa have been the subject of research at the entomology research laboratory, university of vermont, for the last 20 years. elongate hemlock scale, european fruit lecanium, hemlock woolly adelgid and pear thrips were analyzed for the presence of mycopathogens, in order to consider the potential for managing these pests with biological control. fungal cultures isolated from insects with signs of fungal infec ... | 2013 | 26462527 |