Translucent fluorescent yellow flight traps were significantly more attractive to citrus blackfly, Aleurocanthus woglumi Ashby, than opaque yellow and clear traps. Significant correlations were obtained between trap catches of adult A. woglumi and foliar densities of adults and sedentary immature stages. The biological interpretation of such correlations and potential use of flight traps to monitor population trends of A. woglumi are discussed.

In the absence of secondary attraction, 2 species of Scolytidae, Ips latidens (LeConte) and Hylastes gracilis LeConte, showed significant preference while in flight for high-girdled over non-girdled lodgepole pines, Pinus contorta var. latifolia Engelmann. In contrast, beetles in 2 genera of Elateridae, Ampedus and Ctenicera, showed significant preference for non-girdled over high-girdled lodgepole pines. Beetles in 12 other families, as well as other scolytids and elaterids, did not show any significant preference or aversion to high-girdled trees. This is the first clear demonstration of primary attraction for a North American Ips species and the second for an Hylastes species.

Reflectivity of solar radiation was found to be greater for the diurnal tiger beetle Cicindela repanda Déjean than for the nocturnal carabid beetle Agonum decentis Say. Elytra of both species reflected some ultraviolet radiation. The absolute intensity of reflections was not determined and it is not known whether amounts reflected were sufficient to imply any function of body coloration of C. repanda.

The eggs and larvae of Cryptocephalus quadruplex Newman and C. venustus Fabricius are described and illustrated. Both species very likely overwinter in the larval stage. The adults emerge from the last week of May to mid-June. Before mating they feed on plants for about a week. The oviposition period is quite extended and lasts from mid-June to the end of July. The eggs are laid singly in the leaf litter. The hatching period was 10–15 days in the laboratory. The larvae develop through 5 instars and feed exclusively on dead or decaying leaves of various plants. By the end of September most of them have grown to the 4th instar, some to the 5th. At this moment they stop feeding and move deeper in the leaf litter for overwintering. The 1st instar is easily recognized by the presence of the egg bursters on meso- and metathorax, the large flattened-papillate setae of the head capsule, and the presence of 2 pairs of spiniform setae on tibiae. In the following instars the size varies as well as the number of spiniform setae on the tibiae and the number of secondary clubbed setae on the pronotum.

Ips calligraphus (Germar) has previously been recorded from Jamaica but this is the first record of Ips grandicollis (Eichhoff) in the island. In Jamaica, both bark beetles attack 5 species of Pinus, 4 of which had not been previously recorded. The beetles thrive mainly on freshly cut logs and weakened trees, but recently they have been rising to economic importance in plantations. Successful attack on live trees is enhanced by mass aggregation of dispersing adults during invasion. Some adults may re-emerge after a phase of oviposition and disperse to new food sources. There is degeneration of flight muscles during oviposition, and regeneration to allow for another dispersive flight. In I. calligraphus attacking Pinus caribaea there was a mean of 26.74 ± 6.86 (mean ± SE) eggs per gallery, while in I. grandicollis there was 19.29 ± 3.04. The proportion of females at emergence was 0.57 ± 0.03 and 0.05 ± 0.02 in I. calligraphus and I. grandicollis, respectively.

The obliquebanded leafroller, Choristoneura rosaceana (Harris), is a polyphagous insect that is occasionally a serious pest of apple trees. To determine how well adapted it is to this host plant, we studied its nutritional ecology by measuring the development and mortality of larvae and pupae reared on different sets of leaves. We investigated the influence of 3 apple cultivars, 2 time periods (June, July–August), and several leaf types, including those with different ages and different branch positions, on these processes. Larvae and pupae developed more rapidly with lower mortality on younger leaves than on older ones. When larvae were fed leaves collected from the same cultivar and branch position at different times during the season, developmental rates were faster and survival rates were higher earlier in the season. Development and survival were similar on leaves of all cultivars.

Weed trap-strips on summerfallow were evaluated in Saskatchewan in 1982 and 1983 to determine their effectiveness, the costs and benefits associated with insecticidal treatments of the strips, and their effect on the biotic potential of grasshoppers (Orthoptera: Acrididae). Trap-strips, 10 m wide, containing primarily flixweed [Descurainia sophia (L.)], concentrated grasshopper populations, predominantly 3rd-instar Melanoplus sanguinipes (Fabr.), by as much as 4.9 times the initial field density. Sprays of dimethoate (400 g/ha) were about 20% more effective than bran-bait formulations containing dimethoate (200 g/ha). Unlike the field margins that were adjacent to trap-strips, 3 of the unprotected (no bordering trap-strips) margins required at least 1 insecticidal application to minimize crop damage. Field margins that were adjacent to insecticide-treated trap-strips contained 60–66% fewer egg pods than margins of check subplots. Summerfallowing also reduced egg numbers significantly (35%).

Study of a collection of biting midges made by Stewart and Jarmila Peck in the Drakensberg Mountains, Natal, South Africa, yielded records of 42 species of Ceratopogonidae, of which the following 21 species are described as new: Forcipomyia aenigma, F. arcis, F. campanula, F. montana, F. stewarti, F. brunnea, Dasyhelea salta, D. falcata, Notoceratopogon minutus, N. vockerothi, Fanthamia aniculae, F. draconis, F. forsteri, F. montana, F. sani, Alluaudomyia rudolfi, Kolenohelea jarmilae, K. monticola, Serromyia silvatica, Stilobezzia fulva, and Palpomyia armigera. The genus Notoceratopogon with 4 species, all from southern Africa, is described as new with N. minutus n.sp. as the type species. A key is given for the separation of the 12 known species of Fanthamia, all from Subsaharan Africa.

As far as we can determine there are no previous records of Strepsiptera parasitizing psyllids (Jensen 1957; Hodkinson 1974; Kinzelbach 1971). Here we record 3 separate examples.