Species Geron nigrocciput Evenhuis, 1979

Museums

Regional Maps

• Geron nigrocciput Evenhuis, N.L. 1979. Studies in Pacific Bombyliidae (Diptera). II. Revision of the genus Geron of Australia and the Pacific. Pacific Insects 21: 13-55 [Date published 30 August] [48].

  Type data:

   Holotype ANIC ♂ (3.ii.1954, K.R. Norris), QLD: Nindooinbah.
  Paratype(s) many ♂ & ♀ (held in AMSA, ANIC, BMNH, CAS, GDCB & SAMA), many localities in ACT, NSW, QLD, SA & TAS.

Distribution

States

Australian Capital Territory, New South Wales, Queensland, South Australia, Tasmania

Diagnosis

♂. Head: face and oral margin brown, bare; frons brownish black, bare; vertex black, black pilose; occiput black, black pilose; gula black, reddish brown pilose; antennae black; segments I and II black pilose; segment III bare; antennal ratio: 3.5:1:5. Thorax: scutum and scutellum black, yellow pilose, black hairs and macrochaetae laterally and posteriorly, all overlying golden yellow recumbent pile; pleura brownish gray, pale yellow pilose; halter stem brown, knob yellow with brown microsetae subapically below swelling of knob on dorsum. Legs: coxae black, white pilose and tomentose; femora black; fore and mid femora with white scales, white pile basally; hind femur with tan scales, black hairs ventrally; tarsi and tibiae brown, bare. Wing: tinted light smoky brown to subhyaline; veins brown; r-m crossvein slightly before middle of discal cell; R4 curved upward at wing margin; squama brown with white fringe. Abdomen: tergites black, long erect pale yellow pile overlying short recumbent yellow pile; sternites gray, white pilose; apex black, black pilose. Genitalia: basistylus subrectangular, small hooked process near contact with dorsolateral ramus; dististylus minute; aedeagus slightly beak-shaped; epiphallus slender, straight to tip of aedeagus; dorsolateral rami thin; ventrolateral rami broad, flat.
♀. Similar to ♂ except for the following: face shining brown, bare; frons with tuft of silver tomentum lateral to antennal bases; occipital pile intermixed black and yellow; sides of scutum with yellowish orange hair and acrochaetae; coxae gray; fore and midlegs brown; hind femur orange, brown at extreme apex; sides of abdominal tergites I-III red; pile of abdomen sparser than in ♂. Genitalia: similar to G. dispar Macq., except for the following: spermathecal reservoir coiled tightly; apical valve with dense papillae; ejaculatory valve same length as basal duct; vaginal apodeme as illustrated.

History of changes