Tetrastichus garryana Burks (Hymenoptera: Eulophidae) Parasite of an Oak Gall-Wasp, Besbicus mirabilis (Kinsey)

1963 ◽  
Vol 95 (9) ◽  
pp. 1002-1005 ◽  
Author(s):  
David Evans
Keyword(s):  
British Columbia ◽  
Life History ◽  
General Group ◽  
Gall Wasp ◽  
Larval Instars

AbstractThe life history and the later larval instars of Tetrastichus garryana Burks (Hymenoptera: Eulophidae) are described and figured. The parasite has been collected from several species of oak gall cynipids, to which general group it seems to be restricted. In British Columbia it is most commonly associated with the gall-wasp Besbicus mirabilis (Kinsey).

THE STAGES OF ERANNIS VANCOUVERENSIS (LEPIDOPTERA: GEOMETRIDAE) AND LIFE HISTORY NOTES

1973 ◽  
Vol 105 (4) ◽  
pp. 605-612 ◽  
Author(s):  
David Evans
Keyword(s):  
British Columbia ◽  
Life History ◽  
Virus Disease ◽  
Pupal Stage ◽  
Early Spring ◽  
Deciduous Trees ◽  
Life Stages ◽  
Larval Instars ◽  
Central California ◽  
Young Leaves

AbstractErannis vancouverensis Hulst occurs from northern British Columbia to central California, and has been occasionally reported at infestation levels. The larvae feed on young leaves of several species of deciduous trees; winter is passed in the egg or sometimes in the pupal stage; adults emerge during late autumn or occasionally during winter or early spring; females are wingless. The life stages, including larval instars, are described here in detail. Virus disease and parasitism by tachinid flies help control the species.

scholarly journals Life History Phenology and Sediment Size Association of the Dragonfly Cordulegaster dorsalis (Odonata: Cordulegastridae) in an Ephemeral Habitat in Southwestern British Columbia

2006 ◽  
Vol 120 (3) ◽  
pp. 347 ◽  
Author(s):  
Laurie B. Marczak ◽  
John S. Richardson ◽  
Marie-Claire Classen
Keyword(s):  
British Columbia ◽  
Life History ◽  
Life Cycle ◽  
Systematic Sampling ◽  
Limited Evidence ◽  
Larval Instars ◽  
Sediment Size ◽  
Ephemeral Habitat ◽  
Organic Sediments ◽  
One Year

The life cycle of the dragonfly Cordulegaster dorsalis was studied over one year by systematic sampling of larvae in three intermittent headwater streams in southwestern British Columbia. We determined that larvae normally take three years to reach maturity, emerging throughout July and August. There is limited evidence suggesting a split cohort development, with early emergence after two years. Additionally, we tested whether larval instars were distributed randomly or if they occupied different sediment microhabitats. Smaller animals tend to be associated with smaller grained organic sediments, although there was high variation between the streams.

LIFE HISTORY AND HABITS OF A LEAF TIER, AROGA ARGUTIOLA (LEPIDOPTERA: GELECHIIDAE), ON SWEET FERN IN MICHIGAN

1974 ◽  
Vol 106 (9) ◽  
pp. 991-994 ◽  
Author(s):  
Louis F. Wilson
Keyword(s):  
Life History ◽  
Larval Instars

AbstractAroga argutiola is univoltine in Michigan. The adult emerges in late May and oviposits on sweet fern (Myrica aspleniifolia L.). There are six larval instars. The larva constructs a nest by tying leaves together, and then feeding on the leaves in and adjacent to the nest. The last instar overwinters on the ground in a cocoon. The pupa appears in May.

Life-History and Natural Control in British Columbia of Ocnerostoma piniariella Zell. (Lepidoptera: Yponomeutidae), a Needle Miner on White Pine

1958 ◽  
Vol 90 (10) ◽  
pp. 627-631 ◽  
Author(s):  
Peter Harris
Keyword(s):  
New York ◽  
British Columbia ◽  
Life History ◽  
North America ◽  
Pinus Sylvestris ◽  
Scots Pine ◽  
Swiss Alps ◽  
Natural Control ◽  
Pinus Cembra ◽  
White Pine

Ocnerostoma piniariella Zell. is an unimportant pest of Scots pine, Pinus sylvestris L., in Europe. A variety, copiosella Frey, is found in the Swiss Alps attacking a white pine, Pinus cembra L., and sometimes occurs in sufficient numbers to reduce growth. Both European forms have a life-history similar to that described here for British Columbia.In North America, specimens identified as O. piniariella were collected in 1882 at Ithaca, New York (Forbes, 1924). The first Canadian record was for 1922 at Abbotsford, British Columbia, from white pine (Felt, 1922). The species has since been found in British Columbia at Vancouver, Victoria, Langley, and Aldergrove. Dr. T. N. Freeman (in litt.), Entomology Division, Ottawa, has collected it at Constance Bay, South March, Ottawa, and Bells Corners, Ontario.

Influence of a reservoir with surface release on the life history of the mayfly Heterocloeon curiosum (McDunnough) (Ephemeroptera: Baetidae)

1981 ◽  
Vol 59 (2) ◽  
pp. 305-314 ◽  
Author(s):  
Boris C. Kondratieff ◽  
J. Reese Voshell Jr.
Keyword(s):  
Life History ◽  
Benthic Macroinvertebrates ◽  
Temperature Regime ◽  
Life Histories ◽  
Second Generation ◽  
Larval Instars ◽  
History Of ◽  
Lake Anna

The life history of Heterocloeon curiosum was compared in the impounded North Anna River (NAR) and the free-flowing South Anna River (SAR) in Virginia, U.S.A. The study site on the NAR was 32 km below Lake Anna, a surface-release reservoir. Heterocloeon curiosum was bivoltine in both rivers with two summer generations and probable overwintering in the egg stage. It passed through 10 larval instars (range 9–12) in both rivers. The density of larvae was twice as great in the SAR as the NAR. Factors which may have contributed to the lesser success of H. curiosum in the NAR included bottom scouring produced by sudden increases in discharge, absence of the macrophyte Podostemum, quality of available food, and alterations of the temperature regime. Of these four factors, temperature probably had the most significant effect. The emergence of the second generation was 1 month later in the NAR because the reservoir delayed the normal seasonal cooling of the river. The nonoptimal temperature regime appeared to significantly reduce the fecundity of H. curiosum in the NAR. Our data indicate that surface-release reservoirs may have subtle but significant effects on the life histories of benthic macroinvertebrates.

THE BIRDS OF THE CARIBOO PARKLANDS, BRITISH COLUMBIA

1945 ◽  
Vol 23d (3) ◽  
pp. 17-103 ◽  
Author(s):  
J. A. Munro
Keyword(s):  
British Columbia ◽  
Life History ◽  
Human Activities ◽  
Lodgepole Pine ◽  
Migration Route ◽  
Bird Population ◽  
Rapid Process ◽  
Waterfowl Habitat ◽  
Consequent Reduction ◽  
Land Bird

The interior plateau of British Columbia between the 51st and 53rd parallels of latitude and the 120th and 126th degrees of west longitude constitute a definite biotic area designated as the Cariboo Parklands. Composite forests of lodgepole pine and aspen, grasslands, and shallow valleys containing numerous lakes, ponds, and marshes of various types are the principal physiographical features. Ten vertebrate habitats, each with a characteristic biota, are recognized. The region is an important migration route for waterfowl and constitutes the principal, and for some species the most northerly, nesting ground in the province. Nesting grounds are in units that vary greatly in size, in type of cover, and in their food potentials. They are subject to contraction in space, and consequent reduction in productivity, because of periodic seasons of drought. The biota is in rapid process of modification as a result of various human activities. Agricultural developments permanently impaired waterfowl habitat in some places but in other places, where the outlets of ponds have been dammed in order to store water for irrigation purposes, nesting grounds have been improved. The summer land bird population is derived mainly from the south and it includes several species that here reach the northern periphery of their range. The population also contains species of eastern origin that are not known to nest further south in the province. A total of 212 species and subspecies of birds are recorded for the region. Observations of the life history and behaviour of certain species are presented in detail.

LIFE HISTORY AND HABITS OF THE WILLOW BEAKED GALL MIDGE, MAYETIOLA RIGIDAE (DIPTERA: CECIDOMYIIDAE), IN MICHIGAN

1968 ◽  
Vol 100 (2) ◽  
pp. 202-206 ◽  
Author(s):  
Louis F. Wilson
Keyword(s):  
Life History ◽  
Gall Midge ◽  
Head Capsule ◽  
Instar Larva ◽  
Larval Instars ◽  
The Third ◽  
First Instar ◽  
Salix Discolor

AbstractThe willow beaked gall midge, Mayetiola rigidae (Osten Sacken), is univoltine in Michigan. Adults emerge from bud galls on Salix discolor Mühl. and other willows on mornings of warm days in early April. Eggs are laid singly on or near the buds of the host. Head capsule measurements indicate three larval instars. The last two instars each possess a spatula. The first-instar larva emerges in late April and penetrates the soft bud tissues. The gall begins to develop at the beginning of the second instar in mid-May. The third instar appears in early July and continues to enlarge the gall until fall. Prior to overwintering, the larva lines the inner chamber of the gall with silk and constructs one to seven silken septa across the passageway. Pupation occurs in mid-March. The gall deforms the stem and occasionally a galled branch dies or breaks off.

Comparative larval morphology of Platydracus and Staphylinus (Staphylinidae: Staphylinini: Staphylinina) with notes on their biology and redescription of the pupa of Staphylinus

Zootaxa ◽  
2012 ◽  
Vol 3580 (1) ◽  
pp. 24 ◽  
Author(s):  
EWA PIETRYKOWSKA-TUDRUJ ◽  
BERNARD STANIEC
Keyword(s):  
Life History ◽  
Structural Features ◽  
Larval Morphology ◽  
Mature Larva ◽  
Larval Instars ◽  
History Data ◽  
Generic Status ◽  
Life History Data ◽  
Laboratory Conditions ◽  
First Time

The mature larva of Platydracus latebricola (Gravenhorst, 1806) is described for the first time and the larva and pupa of Staphylinus erythropterus Linné, 1758 are redescribed. Illustrations of structural features are provided. The combination of characters that allow for distinguishing the known mature larvae of Platydracus, and larvae and pupae of Staphylinus from closely related genera within tribe Staphylinini are given. The mature larvae of Platydracus and Staphylinus are compared and the generic status of the former is confirmed. Life history data under laboratory conditions of S. erythropterus are provided. Two larval instars in this species, a state unique within the tribe Staphylinini was reported.

Early Ocean Life History of Harrison River Sockeye Salmon and their Contribution to the Biodiversity of Sockeye Salmon in the Fraser River, British Columbia, Canada

2016 ◽  
Vol 145 (2) ◽  
pp. 348-362 ◽  
Author(s):  
Richard J. Beamish ◽  
Chrys M. Neville ◽  
Ruston M. Sweeting ◽  
Terry D. Beacham ◽  
Joy Wade ◽  
...  
Keyword(s):  
British Columbia ◽  
Life History ◽  
Sockeye Salmon ◽  
Fraser River ◽  
History Of
Sign in / Sign up

Export Citation Format

Share Document