LIFE HISTORY AND HABITS OF RHABDOPHAGA SP. (DIPTERA: CECIDOMYIIDAE), A GALL MIDGE ATTACKING WILLOW IN MICHIGAN

1968 ◽  
Vol 100 (2) ◽  
pp. 184-189 ◽  
Author(s):  
Louis F. Wilson
Keyword(s):  
Life History ◽  
Gall Midge ◽  
Taxonomic Status ◽  
Head Capsule ◽  
Instar Larva ◽  
Larval Instars ◽  
The Third ◽  
First Instar ◽  
Third Instar Larva ◽  
Salix Discolor

AbstractThe taxonomic status of Rhabdophaga sp. cannot be determined until a complete revision of the genus occurs. Rhabdophaga sp. on Salix discolor Mühl. is univoltine in Michigan. Adults emerge in mid-April, and shortly afterward deposit numerous eggs on the setaceous undersurface of emerging willow leaves; larval eclosion occurs between 1 and 2 weeks later. Head capsule measurements reveal three larval instars. The first-instar larva bores into the stem until it reaches the pith. Gall development begins about mid-June shortly after the second instar appears. The third-instar larva overwinters in the gall and the pupa appears in early April. The prolate gall is found on the proximal ends of young willow shoots; heavily galled shoots usually die.

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.

LIFE HISTORY AND HABITS OF THE PINE CONE WILLOW GALL MIDGE, RHABDOPHAGA STROBILOIDES (DIPTERA: CECIDOMYIIDAE), IN MICHIGAN

1968 ◽  
Vol 100 (4) ◽  
pp. 430-433 ◽  
Author(s):  
Louis F. Wilson
Keyword(s):  
Life History ◽  
Soft Tissues ◽  
Gall Midge ◽  
Head Capsule ◽  
Instar Larva ◽  
Shoot Tip ◽  
Larval Instars ◽  
First Instar ◽  
Pine Cone

AbstractThe pine cone willow gall midge is univoltine in Michigan. Adults emerge from the galls on Salix eriocephala Michx. and other willows on warm days in late April or early May. Eggs are laid singly on the leaves and stems of the host. Head capsule measurements indicate three larval instars. The first-instar larva emerges in early May and penetrates the soft tissues at the base of the developing shoot tip. Shortly thereafter, the gall begins to develop and is about half grown by the time the second-instar larva appears in late May. The last-instar larva appears in July. Before overwintering, the larva constructs a cocoon which may or may not be closed at the top. Pupation occurs in early April. Numerous inquilines and parasites inhabit the developing and mature gall.

Growth and development of larvae and adults of Tipula sacra Alexander (Insecta: Diptera) in a series of abandoned beaver ponds

1976 ◽  
Vol 54 (2) ◽  
pp. 266-284 ◽  
Author(s):  
G. Pritchard
Keyword(s):  
Growth Rate ◽  
Life History ◽  
Growth And Development ◽  
Adult Emergence ◽  
Head Capsule ◽  
Fourth Instar ◽  
Beaver Ponds ◽  
The Third ◽  
First Instar ◽  
Two Peaks

Collections of all stages of the crane fly, Tipula sacra have been made over a period of years from a series of abandoned beaver ponds in the Kananaskis Valley, Alberta. The growth of larvae was followed by head-capsule measurements and weights. Eggs hatch within a month; first-instar larvae grow rapidly and enter the second instar after a few weeks. The second instar may last for 3 months and the third instar usually lasts for 6 months, including the first winter. Most larvae spend almost a full year in the fourth instar and overwinter for a second time. However, there was much variation in growth rate within the population. Adult emergence curves were consistent in form in 4 years. Each spanned a period of just over 2 months, although individual adults lived for only a few days. These curves snowed two peaks, the second of which contained 15–20% of the year's emergents. These two groups may represent different cohorts that have grown at different rates, suggesting that the life history may be semivoltine or univoltine. The sex ratio changes from about 1:1 in the third instar to 2:1 in favor of males in the late fourth instar, pupa, and adult.

Larvae of Ceratophyllus wickhami and other Species of Fleas

Parasitology ◽  
1930 ◽  
Vol 22 (2) ◽  
pp. 242-259 ◽  
Author(s):  
Enid K. Sikes
Keyword(s):  
Life History ◽  
Seventeenth Century ◽  
Instar Larva ◽  
Grey Squirrel ◽  
Experimental Conditions ◽  
Tracheal System ◽  
Xenopsylla Cheopis ◽  
The Third ◽  
History Of ◽  
Third Instar Larva

A short historical account is given of the writings on flea larvae since the seventeenth century. The larvae have been known since Leeuwenhoek tried to breed them in 1683.The life-history of Ceratophyllus wickhami is described. The fleas were bred in the laboratory on a grey squirrel. Three larval instars occur, and the life-history occupies, on an average, 6 weeks under experimental conditions.The external anatomy of the third instar larva of C. wickhami is described. The mouth parts are generalised and suggest the condition of a primitive insect. The tracheal system is composed of a double longitudinal trunk on each side, with spiracles on the prothorax, metathorax and first eight abdominal segments.The first and second instar of C. wickhami are similar to the third instar larvae, except in size and the presence of a hatching spine in the first stage.The larva of Ceratophyllus fasciatus is mentioned. The importance of the species lies in the presence of completely separated galea and lacinia.Larvae of Xenopsylla cheopis and X. astia are briefly described. The larvae of the two species are practically identical except for the shape of the mandibles.

LOMAMYIA LATIPENNIS (NEUROPTERA: BEROTHIDAE) LIFE HISTORY AND LARVAL DESCRIPTIONS

1968 ◽  
Vol 100 (6) ◽  
pp. 623-629 ◽  
Author(s):  
Catherine A. Tauber ◽  
Maurice J. Tauber
Keyword(s):  
Life History ◽  
Food Source ◽  
Instar Larva ◽  
The Body ◽  
Termite Species ◽  
Physical Conditions ◽  
The Third ◽  
Straight Position ◽  
Zootermopsis Angusticollis ◽  
Third Instar Larva

AbstractThis study includes the first published record of a berothid life history and the first description of a second instar larva. The incubation period was 7 days (N = 21), and the median durations of the first and third stages were 12.5 days (N = 8) and 20.8 days (N = 5). The length of the second stadium was 3 days (N = 5). One adult emerged, after being within the cocoon for 20 days (all temperatures, 75±3°F).Eggs were laid in a stalked cluster in which there were fewer stalks than eggs. The first and third instars, which have piercing–sucking type mouthparts, were carnivorous and fed on the termite Zootermopsis angusticollis. Both of these stages were very mobile. On the other hand, the second instar, apparently a non-feeding stage, hung downward by the abdominal tip. It was not active except when disturbed, whereupon the body snapped into a straight position and then back again into the original C-shaped attitude. The cocoon was oval and transparent.Viability decreased with successive instars and it is possible that the prey offered to the immatures was an inappropriate termite species and therefore a suboptimum food source. It is also likely that unfavorable physical conditions contributed to the high mortality of the immatures.Both the second and third instar larvae are described, and the third instar is compared with a previously described third instar larva of an undetermined species within the same genus.

Descriptions of the first-instar larva of the hypogaeic species Neobidessodes limestoneensis (Watts & Humphreys) and of the third-instar larva of Hydroglyphus balkei Hendrich (Coleoptera: Dytiscidae: Bidessini) with phylogenetic considerations

Zootaxa ◽  
2010 ◽  
Vol 2658 (1) ◽  
pp. 38 ◽  
Author(s):  
MARIANO C. MICHAT ◽  
YVES ALARIE ◽  
CHRIS H. S. WATTS
Keyword(s):  
Abdominal Segment ◽  
Cladistic Analysis ◽  
Instar Larva ◽  
Morphological Characters ◽  
The Other ◽  
The Third ◽  
First Instar ◽  
First Time ◽  
Third Instar Larva ◽  
Occipital Foramen

The first-instar larva of Neobidessodes Hendrich & Balke (through the hypogaeic species N. limestoneensis (Watts & Humphreys)) and the third-instar larva of Hydroglyphus Motschulsky (through H. balkei Hendrich) (Dytiscidae: Bidessini) are described and illustrated in detail for the first time, including detailed morphometric and chaetotaxic analyses of the cephalic capsule, head appendages, legs, last abdominal segment and urogomphi. A cladistic analysis including 51 characters and 32 hydroporine taxa is performed, which supports the inclusion of both genera in the tribe Bidessini based on the absence of the primary pore ABc on the last abdominal segment. The third instar of H. balkei is characterized by the absence of secondary setae on the urogomphi and anterior secondary setae on the coxa, and the presence of 8–9 secondary setae on the mesofemur. On the other hand, the first instar of N. limestoneensis bears 14 lamellae clypeales on the anteroventral margin of the nasale. This species has evolved several morphological characters that are probably associated with its hypogaeic existence, including a lightly sclerotized body, relatively longer cephalic capsule and mandibles, a strongly reduced occipital foramen, absence of stemmata, and short claws. However, primary chaetotaxy apparently has remained as a very conservative expression of the phenotype.

scholarly journals Passalus coarctatus Percheron, 1835 (Coleoptera: Passalidae): redescription and new distributional records

2016 ◽  
Vol 32 (2) ◽  
Author(s):  
Larry Jiménez-Ferbans ◽  
Pedro Reyes-Castillo ◽  
Jack C. Schuster ◽  
Carmen Upegui-Vélez
Keyword(s):  
Trinidad And Tobago ◽  
Taxonomic Status ◽  
Instar Larva ◽  
The Third ◽  
Precise Locality ◽  
Third Instar Larva

Passalus (Passalus) coarctatus Percheron, 1835 was described from Brazil without precise locality data; except for its inclusion in catalogues, nothing is known of this species and only one publication has provided specific locality data. We provide precise localities for P. coarctatus in Trinidad and Tobago, Venezuela, Brazil and Bolivia, we describe the third instar larva, discuss its taxonomic status and correct errors of previous publications.

scholarly journals Morphology of preimaginal stages of Lipara pullitarsis Doskočil & Chvála, 1971 (Diptera: Chloropidae) — a gall-forming fly in the common reed (Phragmites australis)

2006 ◽  
Vol 17 (4) ◽  
Author(s):  
Maria Grochowska
Keyword(s):  
Life History ◽  
Phragmites Australis ◽  
Instar Larva ◽  
Common Reed ◽  
Facial Mask ◽  
The Third ◽  
Preimaginal Stages ◽  
History Of ◽  
The Common ◽  
Third Instar Larva

All preimaginal stages of Lipara pullitarsis are described and illustrated. The facial mask, cephaloskeleton, spiracles and locomotory structures are considered. This is the first description ofthe first- and second-instar larva. The descriptions of the third-instar larva, egg and puparium are expanded. This paper forms a basis for a complete description of the life history of this fly.

Life History and Some Habits of the Pine Gall Weevil, Podapion gallicola Riley, in Michigan

1965 ◽  
Vol 97 (9) ◽  
pp. 962-969
Author(s):  
Louis F. Wilson
Keyword(s):  
Life History ◽  
Life Cycle ◽  
Adult Emergence ◽  
Pinus Resinosa ◽  
Head Capsule ◽  
Red Pine ◽  
Larval Instars ◽  
The Third ◽  
Second Year

AbstractThe pine gall weevil has a 3-year life cycle on red pine (Pinus resinosa Ait.) in Michigan. Adults oviposit from June to August, depositing 1 to 10 eggs in a niche chewed in the bark of a branch internode. Larvae first emerge in August, feed as a group toward the cambium, and then radiate out along the xylem. Head capsule measurements from 1585 larvae indicate that there are three larval instars. Gall development begins in June of the second year, shortly after the larvae begin the second instar. The third instar commences in June of the third year. Pupation occurs in May of the fourth season; adult emergence follows in June. Overwintering occurs in the egg stage or in the three larval instars. Adults do not overwinter, and apparently three distinct broods occur in Michigan.

Life History, Habits, and Damage of the Boxelder Leaf Gall Midge, Contarinia negundifolia Felt (Diptera: Cecidomyiidae) in Michigan

1966 ◽  
Vol 98 (7) ◽  
pp. 777-784 ◽  
Author(s):  
Louis F. Wilson
Keyword(s):  
Life History ◽  
Gall Midge ◽  
Pupal Stage ◽  
Head Capsule ◽  
Larval Instars ◽  
Acer Negundo ◽  
Stage Of Development ◽  
Young Leaves ◽  
Host Mortality ◽  
Third Instar Larvae

AbstractThe boxelder leaf gall midge is univoltine in Michigan. Adults emerge after the first few warm days in April, and deposit numerous eggs within the folded young leaves of boxelder (Acer negundo L.). Larval eclosion occurs a few days later, and gall development begins shortly after. Head capsule measurements revealed three larval instars. Third-instar larvae drop to the ground near the end of May, work their way into the soil, and construct cocoons. Pupation occurs in late August, and overwintering takes place in the pupal stage. Because oviposition occurs almost always on leaves in a certain stage of development and an estimated 50% of leaves will therefore escape attack, host mortality apparently cannot be caused by this insect.

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