British Insects: the Families of Diptera
| British Insects: the Families of Diptera | |
Including Gasterophilidae.
Warble-flies, Bot-flies.
Life style parasitic (in the larval stage).
Adult insects. Small to large. Antennae 2–6 segmented; ‘modified’. Antennae aristate; the bristle dorsal. The second antennal segment distinctly grooved above, or not grooved (Gasterophilinae). Ptilinal suture clearly defined. Ocelli present; 3. Mouthparts non-functional (atrophied). The maxillary palps 1 segmented; porrect. Thorax with the dorsal suture continuous across the middle; with well defined posterior calli. Wings with a discal cell, or without a discal cell (Gasterophilinae); with a subapical cell (when vein 4 bent), or without a sub-apical cell (Gasterophilinae); with a closed anal cell, or without a closed anal cell. The anal cell if present, short. The costa unbroken. Sub-costa apparent; reaching the costa independently of vein 1. The leading edge veins markedly stronger than the rest, or not noticeably stronger than the rest. Wings exhibiting a sharp bend in vein 4 (Hypodermatinae, Oestrinae, Cephenemyiinae), or without a sharp bend in vein 4 (Gasterophilinae). Vein 6 present; reaching the wing margin (Gasterophilinae), or falling short of the wing margin. Wings with a well developed lower calypter; patterned (in at least some Gasterophilinae), or unpatterned. Hind tibiae without strong bristles in the basal 4/5. Predatory (i.e., non-feeding, being without functional mouthparts).
Larvae and pupae. Larvae parasitic; endoparasitic (in mammals); acephalic. Pupa enclosed within a puparium.
Comments. Mostly large, furry or hairy, bee-like flies.
Classification. Suborder Brachycera; Division Muscomorpha Schizophora Calyptratae; Superfamily Oestroidea.
British representation: Genera 4; 11 species.
Illustrations: • Gasterophilus, Hypoderma, and Oestrus: Walker. • Pharyngomyia picta (Original generic description. Deer Bot- or Warble-fly: B. Ent. 106). • Pharyngomyia picta (detail: B. Ent. 106). • Pharyngomyia picta (dissections: B. Ent. 106). • Pharyngomyia picta (legend+text: B. Ent. 106). • Pharyngomyia picta (text, cont.: B. Ent. 106). • Gasterophilus nasalis (Healthful Bot- or Warble-fly: B. Ent. 146).
To view the illustrations with detailed captions, go to the interactive key. This also offers full and partial descriptions, diagnostic descriptions, differences and similarities between taxa, lists of taxa exhibiting or lacking specified attributes, and distributions of character states within any set of taxa.
Cite this publication as: ‘Watson, L., and Dallwitz, M.J. 2003 onwards. British insects: the families of Diptera. Version: 9th April 2007. http://delta-intkey.com’.
