THE BIOLOGY OF A BIRCH LEAF BEETLE, PHRATORA HUDSONIA (COLEOPTERA: CHRYSOMELIDAE), WITH A LARVAL KEY TO FOREST CHRYSOMELINAE IN ONTARIO

1971 ◽  
Vol 103 (4) ◽  
pp. 622-626 ◽  
Author(s):  
O. H. Lindquist ◽  
C. N. Davis
Keyword(s):  
Leaf Beetle ◽  
Seasonal Occurrence ◽  
Immature Stages

AbstractThe seasonal occurrence, habits, and immature stages of Phratora hudsonia Brown are described, and a generic key to forest Chrysomelinae of Ontario is given.

DEVELOPMENT AND BIONOMICS OF CHRYSOMELOBIA LABIDOMERAE (ACARI: TARSONEMINA; PODAPOLIPIDAE), A PARASITE OF THE MILKWEED LEAF BEETLE (COLEOPTERA: CHRYSOMELIDAE)

1975 ◽  
Vol 107 (6) ◽  
pp. 627-638 ◽  
Author(s):  
Thomas C. Baker ◽  
George C. Eickwort
Keyword(s):  
Leaf Beetle ◽  
High Population ◽  
Immature Stages ◽  
Adult Males ◽  
Nymphal Instar ◽  
Male And Female ◽  
Adult Females ◽  
Original Length ◽  
Chrysomelobia Labidomerae ◽  
Pharate Adult

AbstractAdult females of Chrysomelobia labidomerae Eickwort lay eggs on the upper surfaces of the hind wings of Labidomera clivicollis (Kirby). The eggs hatch in approximately 7 days and male and female larvae feed at the base of the wings and in the meso–metathoracic crevice and swell to about twice their original length. For about the second half of the approximately 7-day larval stadium, the larvae are inactive (pharate adults) and are usually cemented to the undersurfaces of the elytra. Inactive female larvae are accompanied by adult males that apparently copulate with the newly emerged adult females. The pharate adult is enclosed in a cuticular sac that may represent a calyptostatic nymphal instar. Adult females feed on the beetle’s abdominal terga and sometimes also occur on its venter where they do not feed. Females disperse from host to host when the beetles copulate. The species is arrhenotokous. Mites overwinter on the diapausing adult beetles and do not infest the immature stages of their host. Even at high population levels, the mites do not noticeably affect the longevity or fecundity of their hosts.

The life history of Caurinus dectes Russell, with a description of the immature stages (Mecoptera: Boreidae)

1982 ◽  
Vol 13 (2) ◽  
pp. 225-235 ◽  
Author(s):  
Loren K. Russell
Keyword(s):  
Life History ◽  
Antennal Segment ◽  
Seasonal Occurrence ◽  
Immature Stages ◽  
Larval Instars ◽  
Egg Diapause ◽  
First Instar ◽  
History Of ◽  
Thoracic Legs

AbstractThe egg, larva, and pupa of Caurinus dectes are described and illustrated. Eggs are ellipsoidal, coated with black cement, and are attached to bryophytes. The larva is orthosomatic, with much-reduced thoracic legs, and further differs from other larval Boreidae in: amphipneustic spiracles, number of stemmata (7), placoid sensilla present in membrane of first antennal segment, and egg burster on frons in first instar. Three larval instars are recognized from analysis of head measurements and partial rearing. Larvae feed in stemmines or galleries in leafy liverworts (Jungermanniales). Pupation occurs in a silk-lined cell or cocoon, otherwise unknown in the Mecoptera; the pupa is exarate, with decticous mandibles. The seasonal occurrence of egg eclosion (February-March), pupation (July-August), and principal adult activity (October-April) is typical for the Boreidae, but only C. dectes is univoltine in this family. Successive annual generations appear to overlap through extended egg diapause and adult perenniation.

scholarly journals Plant Susceptibility to and Seasonal Occurrence of Phaedon desotonis Balsbaugh, a Leaf Beetle Attacking Coreopsis

2002 ◽  
Vol 20 (4) ◽  
pp. 220-223
Author(s):  
S. Kris Braman ◽  
Andrew Pendley ◽  
Will Corley
Keyword(s):  
Leaf Beetle ◽  
Seasonal Occurrence ◽  
Larval Abundance ◽  
Coreopsis Tinctoria ◽  
Large Numbers ◽  
Large Populations ◽  
Plant Susceptibility

Abstract Phaedon desototonis Balsbaugh, a leaf beetle, occurred in large numbers in plantings of wildflowers in central Georgia. Although the species was previously considered rare, large populations of the beetle were associated with Coreopsis spp. Peak larval abundance occurred in April, while greatest numbers of adults were observed in May. One generation was observed. Thirty-eight plant taxa in 11 families were evaluated for susceptibility to feeding and injury by the beetle. The composits Coreopsis lanceolata (L.), Coreopsis tinctoria Nuttall, C. verticillata (L.), and Bidens aristosa (L.) were consistently fed on by adults and larvae of P. desotonis. Of those plants, B. aristosa was the least preferred and least damaged.

Factors contributing to the seasonal occurrence of the willow leaf beetle Plagiodera versicolora

2005 ◽  
Vol 47 (2) ◽  
pp. 99-105 ◽  
Author(s):  
Sawako Egusa ◽  
Takayoshi Nishida ◽  
Kenji Fujisaki ◽  
Hiroichi Sawada
Keyword(s):  
Leaf Beetle ◽  
Seasonal Occurrence ◽  
Plagiodera Versicolora ◽  
Willow Leaf Beetle

A Key to the Larvae of Leaf-Mining Sawflies on Birch in Ontario with Notes on their Biology

1959 ◽  
Vol 91 (10) ◽  
pp. 625-627 ◽  
Author(s):  
O. H. Lindquist
Keyword(s):  
Large Scale ◽  
Scale Insect ◽  
Seasonal Occurrence ◽  
Immature Stages ◽  
Leaf Mining ◽  
Fenusa Pusilla ◽  
Forest Biology

The larvae of leaf-mining insects are difficult to rear in the laboratory and large-scale insect surveys must often rely on the identification of immature stages for their information. The need for a larval key to the birch leaf-mining saw-flies in Ontario became apparent when a complex of three species, Profenusa alumna (MacG.), Fenusa pusilla (Lep.), and Heterarthrus nemoratus (Fall.), was first discovered in 1955 (Lindquist 1955). Larvae of the three mentioned species have been described in recent years by Watson (1959), Friend (1933), and Peirson and Brower (1936), respectively. Additional descriptions of the larvae of F. pusilla and H. nemoratus were made by Daviault (1937). Information on distribution and seasonal occurrence was obtained from collections made by forest biology rangers over a 3-year period. Brief notes on the biology of the species, for comparison purposes, follows the larval key.

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