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Articles 91 - 97 of 97

Full-Text Articles in Entomology

Tb43: Field Recognition Of The Larvae Of Native Coccinellidae Common To The Potato Fields Of Aroostook County, R. H. Storch Mar 1970

Tb43: Field Recognition Of The Larvae Of Native Coccinellidae Common To The Potato Fields Of Aroostook County, R. H. Storch

Technical Bulletins

The adult beetles of the family Coccinellidae are the well-known ladybird beetles or ladybugs. The larvae and adults of the subfamily Coccinellinae are considered beneficial because they feed on pest species, mainly aphids and scale insects. This study was undertaken to provide a means of recognizing the larvae of native coccinellids found in or around the potato fields of Aroostook County. For our purposes, it is desirable to be able to identify the insect quickly and without killing it. Thus, the larval color pattern was chosen as a possible means of identification.

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Tb39: Canada Plum, Prunus Nigra Aiton, As A Primary Host Of The Green Peach Aphid, Myzus Persicae (Sulzer), In Northeastern Maine, W. A. Shands, Geddes W. Simpson, H. E. Wave Jul 1969

Tb39: Canada Plum, Prunus Nigra Aiton, As A Primary Host Of The Green Peach Aphid, Myzus Persicae (Sulzer), In Northeastern Maine, W. A. Shands, Geddes W. Simpson, H. E. Wave

Technical Bulletins

Studies were conducted to determine the role of Canada plum as a host of the green peach aphid in northeastern Maine and to assess its importance as a source of infestation by the aphid on potatoes. The results relate chiefly to chronological and phenological aspects of the use of Canada plum as a primary host of this aphid; temperature developmental requirements of the aphid on this plant in spring; productiveness of spring migrants of the aphid in thickets and in cages; interrelationships between fall aphid populations on foliage, and egg deposition and overwintering to naturally occurring aphid colonies in spring …

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Tb26: Native Bees Associated With The Low-Bush Blueberry In Maine And Eastern Canada, L. W. Boulanger, G. W. Wood, E. A. Osgood, C. O. Dirks Feb 1967

Tb26: Native Bees Associated With The Low-Bush Blueberry In Maine And Eastern Canada, L. W. Boulanger, G. W. Wood, E. A. Osgood, C. O. Dirks

Technical Bulletins

Native bees are particularly important pollinators of lowbush blueberry. Changes in certain cultural practices since the 1930s, however, have caused substantial reductions in the native bee populations. Recent observations, however, have shown that adjustments in these practices can have a beneficial effect on native bees with accompanying increases in their numbers. Collections of native Apoidea were made in various areas of Maine and eastern Canada from 1961 through 1965 to determine the species present and their relative abundance in blueberry fields. Of the 89 species collected, 59 were taken on lowbush blueberry blossoms, and 10 in close association with lowbush …

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Tb24: The Caddisflies (Trichoptera) Of Maine Excepting The Family Hydroptilidae, R. L. Blickle, W. J. Morse Nov 1966

Tb24: The Caddisflies (Trichoptera) Of Maine Excepting The Family Hydroptilidae, R. L. Blickle, W. J. Morse

Technical Bulletins

A survey of the Trichoptera taken from light trap collections made during July and August, 1959, form the basis of the present paper. A checklist of the family Hydroptilidae known from Maine has been published. The collections were made for the most part in the Boreal Region of Maine.

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Tb19: Parasites Of Potato-Infesting Aphids In Northeastern Maine, W. A. Shands, Geddes W. Simpson, C. F. Muesebeck, H. E. Wave Oct 1965

Tb19: Parasites Of Potato-Infesting Aphids In Northeastern Maine, W. A. Shands, Geddes W. Simpson, C. F. Muesebeck, H. E. Wave

Technical Bulletins

This publication presents brief synopses of the biology of several of the more common species or genera of primary parasites and of hyperparasites occurring in northeastern Maine. Three approaches are discussed for increasing effectiveness of insect parasites against the potato-infesting species of aphids, including (1) the introduction of new species of parasites or strains of species better adapted and more effective against each species of aphid than the naturally occurring ones, (2) the mass releasing of parasites in potato fields at times critical for the population dynamics of the aphids, and (3) a combination of these. The combined-effort approach is …

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Tb6: Importance Of Entomogenous Fungi In Controlling Aphids On Potatoes In Northeastern Maine, W. A. Shands, Geddes W. Simpson, I. M. Hall Nov 1963

Tb6: Importance Of Entomogenous Fungi In Controlling Aphids On Potatoes In Northeastern Maine, W. A. Shands, Geddes W. Simpson, I. M. Hall

Technical Bulletins

This publication reports on field studies of aphid biology and of associated ecological factors made near Presque Isle, Maine. Results showed that, among the biological agents affecting aphid population trends from 1952 through 1962, entomogenous fungi were outstanding in reducing the size of populations of the potato aphid developing on potatoes treated with fungicides but not with insecticides. The potato aphid was most affected by fungi and the buckthorn aphid least affected by them. The green peach and foxglove aphids were intermediate. Predators exerted a noticeably adverse effect upon aphid population trends in two of the 11 years.

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Tb4: The Crane Flies Of Maine, Charles P. Alexander Nov 1962

Tb4: The Crane Flies Of Maine, Charles P. Alexander

Technical Bulletins

This publication presents a listing of crane fly species showing their geographical and seasonal distribution, along with a short historical statement covering the chronological development of our knowledge of the subject, a section on the present location of important collections, a tabular listing of the chief collectors, and a short list of references.

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