Species Geron dispar Macquart, 1850
- Geron dispar Macquart, J. 1850. Diptères exotiques nouveaux ou peu connus. 4e supplément. Mémoires de la Société Royale des Sciences, de l'Agriculture et des Arts de Lille 1849(2): 309-479 [reprinted with pagination 5–161, Roret, Paris. The reprint version includes only pp. 309–465 of the original journal article] [426].
Type data:
Syntype(s) MNHP x3, TAS. - Geron cothurnatus Bigot, J.M.F. 1892. Diptères nouveaux ou peu connus. 37e partie. XLVI Bombylidi (mihi) 1re partie. Annales de la Société Entomologique de France Supplement 61: 321-376 [Date published 28 December] [374].
Type data:
Holotype BMNH, TAS.
Distribution
States
Australian Capital Territory, New South Wales, Queensland, Tasmania, Victoria
Distribution References
Diagnosis
♂. Head: oral margin gray, bare; face gray-black, black pile at eye margins; frons black, dense silver tomentose at antennal bases; vertex black, black pilose; occiput black, black pilose along eye margin, yellow pilose elsewhere; gula black, intermixed yellow and black pilose; antennae black; segment I long black pilose; segment II short black pilose; segment III bare; antennal ratio: 4:1:6.5. Thorax: scutum and scutellum black, long dense yellow pile overlying golden yellow recumbent pile; black hairs on posterior margin of scutellum; pleura black anteriorly, gray elsewhere, yellow pilose; halter stem yellow, knob yellow ventrally, black dorsally. Legs: coxae gray, yellow pilose and white tomentose; fore femur black with white scales, black pilose ventrally; mid and hind femora black with yellow scales on anterior surface, long black pilose ventrally; fore tibia and tarsi black, bare; mid and hind tibiae and tarsi brown, bare. Wing: tinted smoky brown to yellow; veins dark brown; r-m crossvein at middle of discal cell; vein closing apex of discal cell sigmoid; R4 parallel with R5 to wing margin; squama brown with yellow fringe. Abdomen: tergites black, yellow pile overlying dense yellow recumbent pile; sternites gray, white pile overlying sparse white tomentum; apex black, black pilose. Genitalia: basistylus subrectangular; dististylus much reduced, vestigial; epiphallus as long as basistylus with pointed dorsal process extending backward from tip of aedeagus; aedeagus beaked; dorsolateral rami well developed at contact with basistylus.
♀. Similar to ♂ except for the following: frons shining black, silver tomentose below ocellar tubercle and at antennal bases; face shining black, bare; antennal segment I short black pilose; occiput black above, gray elsewhere with white pile and tomentum laterally, black pile restricted to behind vertex; pleura gray, white tomentose; mid and hind femora orange with white scales, white pile ventrally; abdominal tergite I gray to orange laterally; sternites dense white tomentose. Genitalia: spermathecal reservoir loosely coiled; spermathecal duct extremely long, thin, flat; apical and basal valves subcylindrical; ejaculatory duct wider than basal and spermathecal ducts; basal duct xh as long as ejaculatory duct.
Diagnosis References
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] [41]
History of changes
| Published | As part of group | Action Date | Action Type | Compiler(s) |
|---|---|---|---|---|
| 26-Aug-2010 | ADDED |