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Subfamilies

Apocleinae
Asilinae
Dasypogoninae
Dioctriinae
Laphriinae
Laphystiinae
Leptogastrinae
Ommatiinae
Stenopogoninae
Stichopogoninae
Trigonomiminae

Key to the genera of the Nearctic Laphriinae

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Laphriinae

References: Artigas, J.N. & Papavero, N. & Pimentel, N.P. (1988): The American genera of Asilidae (Diptera): Keys for identification with an atlas of female spermathecae and other morphological details. IV. Key to the genera of Laphriinae Macquart (except tribe Atomosiini Hermann). - Boletim do Museu Paraense Emilio Goeldi. Serie Zoologia 4(2): 211-256; Belem. Artigas, J.N. & Papavero, N. & Serra, A.L. (1991): The American genera of Asilidae (Diptera): Keys for identification with an atlas of female spermathecae and other morphological details. VI. Tribe Atomosiini Hermann (Laphriinae), with descriptions of two new genera and three new species, and a catalogue. - Gayana. Zoologia. Universidad de Concepcion, Instituto Central de Biologia 55(1): 53-85; Concepcion.
In addition:: Bromley, S.W. (1934): The laphriine robber flies of North America (Diptera: Asilidae). - Columbus: Unpublished Ph.D. Thesis, Ohio State University Press 14: 349 pp.


1 Postmetacoxal area membranous.
ventral view: Postmetacoxal area membranous  lateral view: Postmetacoxal area membranous
ventral view     -     latero-ventral view
2
-Postmetacoxal area with a transverse sclerotized bridge.
ventral view: Postmetacoxal area with a transverse sclerotized bridge  lateral view: Postmetacoxal area with a transverse sclerotized bridge
ventral view     -     latero-ventral view
7


2 Face more or less flat, never strongly excavated or gibbose. Proboscis almost triangular in cross-section . . . . . Dasytrichini: Orthogonis Hermann, 1914  
-Face excavated and gibbose. Proboscis either subcylindrical, with tuft of long bristles above, or laterally or dorsoventrally compressed (at least in apical half). 3


3 Proboscis clearly flattened laterally . . . . . [Laphriini] 4
-Proboscis clearly flattened dorsoventrally, at least on its apical half . . . . . [Andrenosomini]
Proboscis in lateral view  Proboscis in frontal view
5


4 Hind femur thickened, with one or more ventral tubercles which sometimes bear a spine, and femur occasionally with a basal spur-like swelling . . . . . Lampria Macquart, 1838  
-Hind femur never as above . . . . . Laphria Meigen, 1803 and Choerades Walker, 1851  


5 R2+3 and R4 connected by short a extra crossvein (three submarginal cells present) . . . . . Pogonosoma Rondani, 1856
Proboscis in frontal view  dorsal view
 
-R2+3 and R4 not connected by a short extra crossvein (only two submarginal cells present)
R2+3 and R4 not connected by a short extra crossvein
6


6 Ambient vein absent or evanescent . . . . . Cerotainiops Curran, 1930
Ambient vein absent or evanescent  dorsal view
   
-Ambient vein normally developed . . . . . Andrenosoma Rondani, 1856
Ambient vein normally developed  dorsal view
 


7 Large (over 25 mm long) fuzzy flies, resembling bumblebees. Entire body densely haired. Second palpal segment enormously swollen and clavate . . . . . Dasylechiini: Dasylechia Williston, 1907  
-Small, relatively bare flies. Other combination of characters . . . . . [Atomosiini]
dorsal view  lateral view
8


8 Anatergite with soft or coarse hairs, usually without spike-like bristles or only one bristle . . . . . Atomosiella Wilcox, 1937
Anatergite with soft or coarse hairs, usually without spike-like bristles or only one bristle  dorsal view
 
-Anatergite with several characteristic spine or spike-like bristles.
Anatergite with several characteristic spine or spike-like bristles  Anatergite with several characteristic spine or spike-like bristles
9


9 Antenna with style . . . . . Atoniomyia Hermann, 1912
Antenna with style  lateral view
 
-Antenna without style.
Antenna without style  Antenna without style
10


10 Frons extremely widened, with slopes definitely divergent. Scape several times longer than pedicel . . . . . Cerotainia Schiner, 1868
Frons extremely widened, with slopes definitely divergent  Scape several times longer than pedicel
 
-Frons relatively narrow, with convergent slopes. Scape never several times longer than pedicel . . . . . Atomosia Macquart, 1838
Frons relatively narrow, with convergent slopes  Scape never several times longer than pedicel
 

 

 

 

Contents: © Fritz Geller-Grimm, Jorge N. Artigas, 2007
Layout & images: © Fritz Geller-Grimm, 2007