Journal of the Entomological Society of British Columbia
Not a member yet
1660 research outputs found
Sort by
Aphids trapped in Okanagan cherry orchards and the failure of nine species to transmit little cherry disease
Get PDFIn a search for possible vectors of little cherry disease (LCD) more than 118 aphid species, including 13 new records for B.C., were trapped in yellow-pan water traps set out in Okanagan cherry orchards. Eleven species were trapped more than 250 times. In descending order of occurrence, they were <i>Aphis pomi</i> de Geer, <i>Aphis nasturtii</i> Kaltenbach, <i>Myzus persicae</i> (Sulzer), <i>Pemphigus populivenae</i> Fitch, <i>Aphis citricola</i> van der Goot, <i>Hyperomyzus lactucae</i> (Linnaeus), <i>Capitophorus horni</i> Borner, <i>Metopolophium dirhodum</i> (Walker), <i>Rhopalosiphum padi</i> (Linnaeus), <i>Capitophorus hippophaes</i> (Walker) and <i>Hayhurstia atriplicis</i> (Linnaeus).Nine species of aphids reproducing on <i>Prunus</i> spp. including A<i>phis pomi</i>, <i>Asiphonaphis pruni</i> Wilson & Davis, <i>Brachycaudus cardui</i> (Linnaeus), <i>Brachycaudus helichrysi</i> (Kaltenbach), <i>Dysaphis plantaginea</i> (Passerini), <i>Hyalopterus pruni</i> (Geoffroy), Myzus cerasi (Fabricius), Myzus persicae, and <i>Rhopalosiphum cerasifoliae</i> (Fitch) failed to transmit LCD to test trees of c.v. Sam
The seasonal activity of Trachyphloeus bifoveolatus (Coleoptera: Curculionidae) in western Washington
Get PDF<i>Trachyphloeus bifoveolatus</i> Beck breeds in untended grassland fields and pastures and can be a nuisance pest to nearby homeowners when adults migrate in the fall and spring. This insect is univoltine and overwinters as an adult. Eggs are deposited on the foliage of the host plant during May and June and larvae start appearing in late May. Larvae feed on the root systems of these plants during May, June and July. Pupae are found in small earthen pockets 2- to 5-em below ground from July to mid-August. New generation adults appear in late July and within a month most begin leaving the fields to seek overwintering sites. However, evidence suggests that most of the eggs deposited the following yea are laid by adults that remain in the field over winter. Adults that left the field in the fall apparently do not return to breeding sites in substantial numbers the following spring
Responses to plant extracts of neonatal codling moth larvae Cydia pomonella (L.) (Lepidoptera: Tortricidae: Olethreutinae)
Get PDFA bioassay was designed to test behavioral responses of neonatal codling moth larvae to chloroform and methanol extracts of 25 plant species. Chloroform extractable materials from absinthe wormwood, <i>Artemisia absinthium</i> (L.), rabbitbrush, <i>Chrysothamnus nauseosus</i> (Pallas), and tansy, <i>Zanacetum vulgare</i> (L..) showed promise as possible feeding deterrents to neonatal codling moth larvae
Host discrimination in Rhagoletis berberis (Diptera: Tephritidae)
Get PDFFollowing oviposition, females of <i>Rhagoletis berberis</i> Curran (Tephritidae), appear to deposit host marking pheromones on the surface of their host fruit, <i>Mahonia</i> (Berberacidae), and discriminate against such marked hosts when choosing oviposition sites. Marking is accomplished by dragging the ovipositor on the fruit surface, resulting in the deposition of a fluid trail. In addition to these findings, females were observed feeding on the juice of host fruit through punctures made with their ovipositors. Therefore, the incidence of fly feeding was compared with successful and unsuccessful oviposition
