AbstractIn the laboratory a proprietary, neem-based insecticide formulation (NBI) was evaluated as a potential pest management tool for the western cherry fruit fly, Rhagoletis indifferens Curran (WCFF). NBI was tested for its potential effects on survival and developme...

AbstractOnthophagus nuchicornis(Linnaeus),Onthophagus taurus(Schreber), andDigitonthophagus gazella(Fabricius) (Coleoptera: Scarabaeidae: Scarabaeinae: Onthophagini) are species of dung beetles that have been used in relocation programmes to accelerate the degradation o...

AbstractDiet incorporation assays detected no difference in susceptibility of instars IV, V, and VI of spruce budworm exposed to Bacillus thuringiensis, either in terms of dose, LC50, or time, LT50. The hypothesis that the dose–response for larvae of each instar fitted ...

Hylastes opacus Erichson is a recently introduced bark beetle in North America (Bright and Skidmore 1997; Hoebeke 1994; Rabaglia and Cavey 1994; Wood 1992). It is widely distributed in the Palearctic region, where it usually breeds in stumps and roots of dead or dying p...

We report for the first time the occurrence of the well-known Eurasian and north African parasitoid Cotesia vanessae (Reinhard) (Hymenoptera: Braconidae) in North America. Specimens were reared from Chrysodeixis chalcites (Esper) and Trichoplusia ni (Hubner) (Lepidopter...

AbstractCymodusopsis townesorum sp.nov. and C. nigricincta novomexicana ssp.nov. (Hymenoptera: Ichneumonidae) are described from the Nearctic region.

AbstractAdding queen mandibular pheromone into honey bee colonies earlier than 24 h after queen loss resulted in an inhibition of queen-rearing, but not when added after 4 days. The number of queen cells initiated in each treatment decreased with the addition of the phe...

The spotted tentiform leafminer, Phyllonorycter blancardella (F.), overwinters in a photoperiodically induced state of pupal diapause. The critical day length (50% of leafminers enter diapause) for P. blancardella from latitudes of about 42–44°N in southwestern Ontario ...

AbstractOver two summers following accidental May wildfires, total ant (Hymenoptera: Formicidae) forager catch and species richness did not change in jack pine woodlands on sand hills in central Alberta, Canada. However, one year after a fire, smaller ants, and those in...

AbstractPheromone lures for eastern and western blackheaded budworms, Acleris variana (Fernald) and A. gloverana (Walsingham), were synthesized and deployed in traps at locations with decreasing and increasing populations of western blackheaded budworms in British Colum...