Bairamlia fuscipes Waterston, a Chalcidoid Parasite on Ceratophyllus wickhami Baker (Siphonaptera)

The Chalcidoid wasp, Bairamlia fuscipes, was found parasitising the flea Ceratophyllus wickhami in the nest of the North American Grey Squirrel (Sciurus carolinensis) from Gerrard's Cross.The larval and pupal stages of B. fuscipes were found in the cocoons of C. wickhami, and the adults were crawling about in the squirrel's nest.The parasites were scarce, only 7 per cent, of the cocoons dissected at intervals during fifteen months were parasitised.The parasite has not been reared in the laboratory beyond the second instar larva, though full grown larvae have successfully reached maturity under experimental conditions.B. fuscipes oviposits through the flea cocoon and fixes the egg on the abdomen of a resting larva or pupa. Only one egg has been found in each parasitised cocoon. The larva feeds externally on the flea, fixing itself to the fourth abdominal segment or thereabouts.Attempts were made to parasitise larvae of Xenopsylla astia, but without success.The external anatomy of the full grown larva of B. fuscipes is described.

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DESCRIPTION OF THE LAST INSTAR LARVA OF THE CABBAGE WEBWORM, HELLULA ROGATALIS (LEPIDOPTERA: PYRALIDAE), WITH A KEY TO LARVAE OF NORTH AMERICAN SPECIES OF HELLULA GUENÉE

The Canadian Entomologist ◽

10.4039/ent113361-5 ◽

1981 ◽

Vol 113 (5) ◽

pp. 361-364

Author(s):

Suzanne Allyson

Keyword(s):

North American ◽

Instar Larva ◽

North American Species ◽

Diagnostic Characters ◽

The North ◽

Lepidoptera Pyralidae

AbstractThe last instar larva of Hellula rogatalis (Hulst) is described and illustrated. Diagnostic characters of the genus are given, and a key included for the North American species. Larvae of this genus are compared with those of Dicymolomia Zeller.

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Larvae of Ceratophyllus wickhami and other Species of Fleas

Parasitology ◽

10.1017/s0031182000011094 ◽

1930 ◽

Vol 22 (2) ◽

pp. 242-259 ◽

Cited By ~ 22

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.

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XIII.—Cytological Studies on the Reproductive Organs. Chromosome Behaviour in the Male Grey Squirrel (Sciurus carolinensis leucotus)

Proceedings of the Royal Society of Edinburgh ◽

10.1017/s0370164600014991 ◽

1937 ◽

Vol 56 ◽

pp. 196-209 ◽

Cited By ~ 6

Author(s):

P. C. Koller

Keyword(s):

Reproductive Organs ◽

Economic Importance ◽

Sciurus Carolinensis ◽

Chromosome Behaviour ◽

American Continent ◽

Grey Squirrel ◽

Histological Changes ◽

North American Continent ◽

The North ◽

Great Economic Importance

The grey squirrel (Sciurus carolinensis leucotus Gapper), which is a native of the North American continent, was introduced into England and Scotland quite recently and soon became of great economic importance in these countries. In his very excellent monograph, Middleton (1930) states that both sexes of the grey squirrel show diminished activity during the winter and while they do not hibernate in the true sense of the word, they probably sleep if the weather is severe. The breeding habits of the female were studied by Deanesly and Parkes (1933), who ascertained that the female definitely has a period of anœstrus during which the reproductive organs are atrophic. In the male, however, fully functional testes were found throughout the year (Allanson, 1933), and there were no histological changes which would indicate a regular period of quiescence.

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Descriptions of larvae of the North American endemic stygobiontic Ereboporus naturaconservatus Miller, Gibson & Alarie and Haideoporus texanus Young & Longley (Coleoptera: Dytiscidae)

Tijdschrift voor Entomologie ◽

10.1163/22119434-00002017 ◽

2013 ◽

Vol 156 (1) ◽

pp. 1-10

Author(s):

Yves Alarie ◽

J. Randy Gibson ◽

Kelly B. Miller

Keyword(s):

North American ◽

Abdominal Segment ◽

Head Capsule ◽

The North ◽

Morphological Adaptations ◽

The Common

The larvae of the North American stygobiontic dytiscid species Ereboporus naturaconservatus Miller, Gibson & Alarie, 2009 and Haideoporus texanus Young & Longley, 1976 are described with an emphasis on chaetotaxy of the head capsule, head appendages, legs, last abdominal segment and urogomphi. Both of these species share the presence of a nasale and the absence of the primary pores MXd and LAc, which have been recognized as synapomorphies for members of the subfamily Hydroporinae. Out of the common convergent characteristics associated with hypogaeic living, no synapomorphies were found that could relate Haideoporus texanus and Ereboporus naturaconservatus, which reinforces the hypothesis that these species evolved independently within the subfamily Hydroporinae. In terms of morphological adaptations, E. naturaconservatus stands as a remarkable hydroporine in that its larvae evolved a truncated last abdominal segment and a very elongate urogomphomere 1 relative to urogomphomere 2.

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On a New Species of Oxyurid from the Grey Squirrel in Scotland

Journal of Helminthology ◽

10.1017/s0022149x00001279 ◽

1932 ◽

Vol 10 (1) ◽

pp. 29-32 ◽

Cited By ~ 9

Author(s):

Thomas W. M. Cameron

Keyword(s):

New Species ◽

North America ◽

Large Intestine ◽

Sciurus Carolinensis ◽

Helminth Parasites ◽

Grey Squirrel ◽

Recent Introduction ◽

The North ◽

A New Species

The grey squirrel (Sciurus carolinensis), although of comparatively recent introduction from North America, has become thoroughly acclimatised and may now be regarded as one of the native British Mammals. Comparatively little is known of its helminth parasites and the following oxyurid, found in the large intestine of a specimen shot in the north of Scotland, appears to be undescribed.

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