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Stereoscan studies with descriptions of new characters of the egg and larval instars of Salticella fasciata (Meigen) (Diptera: Sciomyzidae)

Published online by Cambridge University Press:  01 April 1999

J.-C. Vala ,
L. V. Knutson  and
C. Gasc
J.-C. Vala
Affiliation:
Faculté des Sciences, 33, rue Louis Pasteur, 84000 Avignon, France
L. V. Knutson
Affiliation:
Systematic Entomology Laboratory, Agricultural Research Service, U.S. Dept. Agriculture, Beltsville Agricultural Research Center, Beltsville, Maryland 20560, U.S.A. Current address: L. V. Knutson, 4 rue des Erables, le Vert Pré, 34830 Clapiers, France
C. Gasc
Affiliation:
Faculté des Sciences, 33, rue Louis Pasteur, 84000 Avignon, France
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Abstract

New data on the morphology of Salticella fasciata immature stages are given from stereo scanning microscope observations. Distinctive features are presented for the egg chorion and the main sensorial structures of the cephalic, thoracic and abdominal segments of the larvae. In contrast to previous studies, the presence of float hairs on the posterior disc is clearly observed in the three larval instars. The ecological and phyletic significance of some characters are discussed.

Keywords

insectssensillaemaxillary organantennal organfloat-hairsbehaviourSalticella fasciata
Type
Research Article
Information
Journal of Zoology , Volume 247 , Issue 4 , April 1999 , pp. 531 - 536
Copyright
1999 The Zoological Society of London

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