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| Key: Key to the British Asteiidae (Diptera) |
Key as provided by Chandler (1978).
| | References | Chandler, P.J., 1978. A revision of the British Asteiidae (Diptera) including two additions to the British list. - Proceedings of the British Entomological and Natural History Society 11: 23-34.
| | Last modified 20/01/2010 23:32 by Paul Beuk | No of couplets: 6 |
Return to List of Keys |
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| Key |
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1a |
| R1 short, ending in C a little beyond Sc. Mesopleuron bare. Alula present, margin either fringed with long hairs or not. British species with two pairs of dc. |
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2 |
| b |
| R1 long, ending in C well beyond Sc. Posterior crossvein present. Mesopleuron with numerous fine hairs near upper margin. Alula present, margin fringed with long hairs. One pair of strong, proclinate orbital setae. Arista short pubescent. Vibrissae short and weak. One pair of dc. |
| Leiomyza Macquart, 1835 |
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5 |
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2a |
| Posterior crossvein absent. Wing margin in allular region bare. One pair of strong, reclinate orbital setae. Arista in British species branched in zig-zag fashion. Vibrissae present. |
| Asteia Meigen, 1830 |
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3 |
| b |
| Posterior crossvein located at level of tip of R1. Allula present, margin fringed with long hairs. Orbital setae short and weak. Arista very short pubescent. No distinct vibrissae. |
| Asteiosoma rufifrons Duda, 1927 |
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3a |
| Mesonotum yellow with four brown stripes on anterior part. ending short before posterior dc; outer one interrupted by suture and laterally expanded before it; a narrow, lateral presutural strip extends along the lower margin of the humerus and notopleural area but pleura and scutellum are entirely yellow. |
| Asteia elegantula Zetterstedt |
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| b |
| Mesonotum including humeri entirely shinging dark brown to black. |
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4 |
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4a |
| Disc of scutellum shining black. Frons, face, antennae, palpi, pleura, abdomen and halteres pale yellow. |
| Asteia concinna Meigen, 1830 |
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| b |
| Disc of scutellum yellow. Frons shining dark brown except for the yellow anterior margin; face with a white crossband that is bordered dark brown dorsally and ventrally; antennae with basal segments brown and third segment yellow except at base of arista; pleura yellow with brownish markings on sternopleura and hypopleura; abdomen yellow with curved black lateral bands. |
| Asteia amoena Meigen, 1830 |
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5a |
| Knob of halter clear yellow. |
| Leiomyza scathophagina (Fallén, 1823) |
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| b |
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6 |
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6a |
Dc placed more anteriorly, removed from the scutellum by about their length  . Orbital setae nearly as strong as vertical setae. |
| Leiomyza dudai Sabrosky, 1956 |
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| b |
| Dc placed more posteriorly, removed from the scutellum by much less than their length. Orbital setae relatively short and weak. |
| Leiomyza laevigata (Meigen, 1830) |
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