| efficacy of piper (piperaceae) extracts for control of common home and garden insect pests. | extracts from three species of the plant family piperaceae, piper nigrum [l.], piper guineense [schum & thonn, and piper tuberculatum [jacq.], were tested for efficacy against insects from five orders. all three species contain isobutyl amides, plant secondary compounds that act as neurotoxins in insects. these materials are considered safe to mammals because piper spp. were used for centuries for spice and medicinal purposes. when 24-h p. nigrum lc50 values were compared between common insect p ... | 2004 | 15384353 |
| chromosome studies on primitive chrysomelids. 1. a survey of six species of criocerinae (coleoptera, chrysomelidae). | the chromosome numbers and sex-determining systems of six species of criocerinae have been determined, four of them for the first time. oulema melanopus l., crioceris paracenthesis l., c. asparagi and c. duodecimpunctata l. share a 7ii + xyp formula, while lema puncticollis curt. has 8ii + xyp and lilioceris lilii shows a karyotype of 2n = 20 chromosomes. the modal chromosome formula and possibly the most primitive one for criocerinae is 7ii + xyp, but it should not be assumed as the ancestral f ... | 1980 | 7215000 |
| different oviposition behaviour in chrysomelid beetles: characterisation of the interface between oviposition secretion and the plant surface. | the behavioural sequence of the oviposition process can be quite distinct in herbivorous leaf beetles: eggs are either connected to the plant surface or laid into mesophyll tissue. females of two beetle species were recorded with a digital camera in order to analyse their oviposition behaviour. the morphology of the plant-egg-interface was investigated in three species by histological studies and scanning electron microscopy. the lily leaf beetle, lilioceris lilii, oviposits directly on the plan ... | 2006 | 18089069 |
| establishment of parasitoids of the lily leaf beetle (coleoptera: chrysomelidae) in north america. | three larval parasitoids were imported from europe to control the lily leaf beetle, lilioceris lilii scopoli (coleoptera: chrysomelidae), an accidentally introduced herbivore of native and cultivated lilies in north america. tetrastichus setifer thomson (hymenoptera: eulophidae) was introduced in massachusetts in 1999, and was found to be established there in 2002. subsequent releases of t. setifer were made and two additional parasitoids, lemophagus errabundus szepligeti (hymenoptera: ichneumon ... | 2017 | 28334235 |
| functional morphology of the copulatory organs of a reed beetle and a shining leaf beetle (coleoptera: chrysomelidae: donaciinae, criocerinae) using x-ray micro-computed tomography. | for more than 100 years it has been known that the sclerotised median lobe of beetles harbours a membranous structure (the "internal sac" or "endophallus") which is everted during copula inside the female genital tract. in order to explore the functional role of this structure and those associated with it, we cryofixed copulating pairs of donacia semicuprea and lilioceris lilii and studied the relative position of the elements of the copulatory apparatus of males and females by micro-computer-to ... | 2015 | 26798321 |