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Key: Key to the Western Palaearctic Asteiidae (Diptera) with a few additions from other regions.
Key based references below, combined and updated.
References
Carles-Tolrá, M., 1998. Description of a new Phlebosotera species from Spain (Diptera, Asteiidae). - Studia Dipterologica 5(1): 55-57.
Carles-Tolrá, M., 2011. Asteia dimorphica sp. n.: A new asteiid species from Spain (Diptera: Asteiidae). - Heteropterus Revista de Entomologia 11(1): 29-33.
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.
Duda, 0., 1934. 58b. Astiidae. - Die Fliegen der Palaearktischen Region 6(1): 1-15.
Gibbs, D., & L. Papp, 2007. A review of the Holarctic species of Leiomyza Macquart, 1835 (Diptera: Asteiidae) with descriptions of two new species. - Studia Dipterologica 13(2)(2006): 241-248.
Lyneborg, L., 1969. Some Micropezidae, Psilidae, Platystomidae, Otitidae, Pallopteridae, Odiniidae, Aulacigasteridae, Asteiidae and Milichiidae (Diptera collected in Southern Spain, with descriptions of six new species. - Entomologiske Meddelelser 37: 27-46.
Papp, L., 1972. Entomological explorations in Ghana by Dr. S. Endrődy-Younga. 18. A new genus and species of Asteiidae from Ghana (Diptera). - Annales historico-naturales Musei Nationalis
hungarici
64: 319–321.
Papp, L., 1979. Seven new species of the Palaearctic Lauxaniidae and Asteiidae.. - Reichenbachia 17(12): 87-97.
Sabrosky, C.W., 1956. Additions to the knowledge of Old World Asteiidae (Diptera). - Revue Française d'Entomologie 23(4): 216-243.
Last modified 03/11/2017 10:57 by Paul BeukNo of couplets: 27

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Key
1a
Crossvein M-M present ; dc 0+1.
Sigaloessinae
2
b
Crossvein M-M absent ; dc 0+2 or 1+2.
Asteiinae
18
 
2a
Arista lacking  or only basal aristomere present . No fronto-orbital and ocellar setae. Vein R2+3 very short, terminating in R1  or in costa. First flagellomere enlarged.
3
b
Arista well-developed. Fronto-orbital and ocellar setae present. Vein R2+3 various, short or long. First flagellomere mostly normal.
4
 
3a
Arista with long hairs, first flagellomere with long hairs but only with basal aristomere . Ocellar seta weak but present. Pedicel with long dorsal seta. Two rows each of acrostichal and intra-alar microchaetae. Vein R2+3 very short, terminating in R1, discal cell short . Wing comparatively broader, length/width ratio slightly less than 2.5.
Four species in Africa
Anarista Papp, 1972
 
b
Arista lacking, first flagellomere with short hairs but with 5 long setae, longer than first flagellomere . Not only fronto-orbitals, but also ocellar seta lacking. Pedicel without long dorsal seta. No acrostichal or intra-alar microchaetae. Vein R2+3 slightly longer, terminating in costal vein, discal cell long, inter-crossvein section of M1+2 more than 4 times as long as M-M crossvein . Wing comparatively slender, length/with ratio is slightly more than 3.
One species from Thailand
Polyarista Papp, 2013
 
 
4a
Vein R2+3 long, ending in costal vein well beyond R1 . Anepisternum with numerous fine setulae. One pair of proclinate fronto-orbitals present.
Leiomyza Macquart, 1835
5
b
Vein R2+3 short, ending in costal vein at or slightly beyond R1, i.e. second costal section as long as R-M crossvein or even shorter . Anepisternum bare or with numerous fine setulae.
12
 
5a
Knob of halter clear yellow.
6
b
Knob of halter darkened.
8
 
6a
Dorsocentral setae in a more posterior position, placement just anterior of level of postalar setae. Frons dull to subshining, finely pollinose up to ocellar triangle and upper orbits, black to dark brown on ocellar triangle and orbital plates, remainder yelloto pale brown.
Leiomyza curvinervis (Zetterstedt, 1838)
 
b
Dorsocentral setae in a more anterior position, placement just posterior of level of notopleural setae. Frons shining, black to dark brown with paler anterior margin.
7
 
7a
Surstylus and epandrial process closely approximated, separated by less than the width of the epandrial process. Slightly clavate tip to epandrial process bent inward. Apical setae of surstylus set at an angle to surstylus pointing inward .
Leiomyza scathophagina (Fallén, 1823)
 
b
Surstylus and epandrial process well separated by more than the width of the epandrialprocess; slightly clavate tip to epandrial process straight; apical setae of surstylus in line with surstylus .
Leiomyza kaszabi Papp, 1972
 
 
8a
Dc placed more posteriorly, removed from the scutellum by much less than their length.
9
b
Dc placed more anteriorly, removed from the scutellum by about their length .
11
 
9a
In dorsal view surstyli swollen apically and abruptly bent inward .
Leiomyza laevigata (Meigen, 1830)
 
b
In dorsal view surstyli tapering to a narrowly rounded tip  .
10
 
10a
Epandrial process tapering to a rounded point, more like dudai than birkheadi. Apical setae of the surstylus relatively short and fine , in lateral view surstylus with a relatively broad tip the two apical setae (sometimes a smaller third one present) with their bases clearly separated . Legs yellow, the femora more or less distinctly infuscated along their entire length, particularly the hind pair.
Leiomyza wheeleri Sabrosky, 1956
 
b
Epandrial process a little swollen apically with broadly rounded tip. Apical setae of the surstylus relatively long and strong , in lateral view surstylus tapering to a narrow tip the bases of the two apical setae closely approximated . Legs yellow, at most the femora, especially the hind pair, slightly browned subapically.
Leiomyza birkheadi gibbs in Gibbs & Papp, 2007
 
 
11a
Inner face of surstylus with angled projection basally surmounted by a few fine setae  . Ejaculatory apodeme smaller with cranial end less dilated . Apical setae of surstylus relatively shorter. Epandrial process broader, the apical digiti form process of a different form.
Leiomyza dudai Sabrosky, 1957
 
b
Inner face of surstylus smooth, lacking a distinct angled projection basally . Ejaculatory apodeme larger with cranial end more dilated . Apical setae of surstylus relatively longer. Epandrial process less broad, the apical digitiform process of
a different form .
Leiomyza chinensis Papp in Gibbs & Papp, 2007
 
 
12a
Anepisternum bare. Anal cell, when tracable, never quadrate; anal vein virtually invisible . Two pairs of dorsocentral setae.
Astiosoma rufifrons Duda, 1927
 
b
Anepisternum setose. Anal vein and anal cell faint but clearly visible as crease or fold; anal cell short and quadrate . One pair of dorsocentral setae.
Phlebosotera Duda, 1927
13
 
13a
Mesonotum dull, heavily pollinose.
Phlebosotera lacteipennis Hendel, 1931
14
b
Mesonotum shinging, at most thinly pollinose.
15
 
14a
Mesonotum yellowish or reddish brown with some black to dark brown markings.
15
b
Mesonotum entirely black.
16
 
15a
One pair of vertical setae (inner vertical setae absent).
Phlebosotera mollis Duda, 1927
 
b
Two pairs of vertical setae.
Phlebosotera maeandrica Carles-Tolrá, 1998
 
 
16a
Ocellar triangle at least yellow centrally.
Phlebosotera striata Hendel, 1931
 
b
Ocellar triangle entirely dark.
17
 
17a
Mesonotum shiny though still thinly pale pollinose.
Phlebosotera longilineata Sabrosky, 1956
 
b
Mesonotum entirely shining, without pollinosity.
Phlebosotera maspalomasi Frey, 1958
 
 
18a
Arista absent.
Subanarista mahunkai (Papp, 1979)
 
b
Arista present.
Asteia Meigen, 1830
19
 
19a
Hind tibia with two dark rings.
20
b
Hind tibia entirely pale.
22
 
20a
Arista bare, straight. R1 strongly curved towards C.
Asteia caesia Lyneborg, 1969
 
b
Arista distinctly zig-zag. R1 more gently towards C.
21
 
21a
Antenna with first flagellomere blackish dorsally. Pleura almost entirely yellowish brown.
Asteia inanis Lyneborg, 1969
 
b
Antenna with first flagellomere entirely brownish. Pleura with pattern of darker and paler areas.
Asteia floricola Papp, 1979
 
 
22a
Head flattened at least to some extent, eyes clearly longer than high.
23
b
Head more or less globose, longest axis of eye not nearly horizontal.
25
 
23a
Head at least twice as long as high.
Asteia tunisica Papp, 1979
 
b
Head no more than twice as long as high.
24
 
24a
Antennae with first flagellomere darkened and rather triangular.
Asteia ibizana (Enderlein, 1935)
 
b
Antennae with first flagellomere yellowish and rounded.
Asteia dimorphica Carles-Tolrá, 2011
 
 
25a
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
 
b
Mesonotum including humeri entirely shinging dark brown to black.
26
 
26a
Disc of scutellum shining black. Halters pale yellow; face pale yellow, without white cross band but with a pair of black spots . Abdomen pale yellow, without distinct black markings.
Asteia concinna Meigen, 1830
 
b
Disc of scutellum yellow. Halters pale yellow with partially darkened knob. Face with a white crossband that is bordered dark brown to black dorsally and ventrally . Abdomen yellow with black spots or curved lateral bands.
27
 
27a
Frons largely black to dark brown, anterior margin yellow.
Asteia amoena Meigen, 1830
 
b
Frons largely yellowish to pale brown, posterior margin including ocellar triangle dark brown to blackish.
Asteia algeriensis Sabrosky, 1956
 
 
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