Journal of the Entomological Society of British Columbia
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Phytoseiulus persimilis (Acarina: Phytoseiidae) for control of two-spotted mites in a commercial greenhouse
Full text linkNatural infestations of the two-spotted spider mite were controlled on green house cucumber by early releases of the predatory mite, <i>Phytoseiulus persimilis</i> Athias-Henriot. Later sporadic mite outbreaks severely damaged some plants and required frequent surveys and repeated predator releases in the greenhouse. However, no mite sprays were required and crop yield was satisfactory
Feeding potential of predators of Myzus persicae
Full text linkA rate of feeding for predator insects on the green peach aphid, <i>Myzus persicae</i> (Sulzer), was determined based on the number of aphids consumed from a more natural environment corrected for reproduction and natural death. Of the predator species studied, the largest, <i>Coccinella transversoguttata</i> Falderman, consumed about 10 times more aphids than the smallest, <i>Orius tristicolor</i> (White), and about 7 times more than the average for all other predator species combined
Pterostichus strenuus Panz, a newly-discovered palaearctic species in the Vancouver area (Coleoptera: Carabidae)
Full text linkBuprestidae of southern Vancouver Island
Full text linkThis paper lists the Buprestidae known to occur on Southern Vancouver Island, British Columbia, with their hosts. Represented are the following tribes: Buprestini (15 spp.); Chrysobothrini (6 spp.); Acmaeoderini (1 sp.); and Agrilini (1 sp.)
Note on the occurrence of predatory Anystis mites (Acari: Anystidae) in SW British Columbia
Full text linkInsects and mites associated with fresh cattle dung in the southern interior of British Columbia
No full textSixty-seven species or genera of insects were found associated with fresh cattle dung in the southern Interior of British Columbia. Three species of mites were associated with two of the insect species. About one-half of the species of Coleoptera and Diptera concerned are known or thought to be introduced
Occurrence of a midge, Oligotrophus betheli Felt, on juniper on Vancouver Island, British Columbia (Diptera: Cecidomyiidae)
No full textNotes on the biology of Cramptonomya spenceri Alexander (Diptera: Cramptonomyiidae)
No full textAdults of <i>Cramptonomyia spenceri</i> were abundant in the lower Fraser Valley, British Columbia, from late February to early April 1973. Eggs, larvae and pupal skins were found on or in dead fallen stems of <i>Alnus rubra<.i>. Wing frequency measurements of both sexes indicate that auditory stimuli are not Involved in finding of mates
Laboratory biology of the dusky sap beetle and field interaction with the corn earworm in ears of sweet corn
Full text linkThe developmental rates of the egg, larval and pupal stages of the dusky sap beetle, <i>Carpophilus lugubris</i> Murray, reared on artificial diet at 21°C were 4.04. 22.27. and 9.2 days, respectively, a total of 35.5 days. The mean lifetime of adult females was 263 days, or about 110 days longer than previously reported. Its population growth statistics were as follows: intrinsic rate of increase = 0.34( Q/ Q/week, generation time 12.20 weeks. and net reproductive rate = 63.1 Q/ 2 /week. Field studies established that the sap beetles can successfully invade ears of corn throughout the season in the absence of corn earworms, <i>Heliothis zea</i> (Boddie). However, more sap beetles were found in ears infested with corn earworm than in ears not so infested. Eggs of <i>Geocoris</i> sp. were more abundant in infested ears with corn earworms and sap beetles than in uninfested ears: however adults of <i>Orius tristicolor</i> (white) did not display such a preference
Dasyhelea oppressa (Ceratopogonidae) and Mycetobia divergens (Anisopodidae): Two Diptera new to British Columbia
Full text linkLarvae and pupae of <i>Dasyhelea oppressa</i> Thomsen and <i>Mycetobia divergens</i> Walker were found in the sap on the ulcerated trunk of a horse-chestnut tree in Vancouver, B.C. Adults of both species were reared from these collections. This record is the first for <i>D. oppressa</i> west of Manitoba in Canada and Iowa in the United States and for <i>M. divergens</i> the first record west of Alberta and Arizona