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Key: Lonchopteridae of Europe
The key below is that of Barták (1986) with a few corrections and updated terminology as well as the addition of later described species.
References
Barták, M., 1986. Československédruky čeledi Lonchopteridae (Diptera) [The Czechoslovak species of Lonchopteridae (Diptera)]. - Dipterologica Bohemoslovaca 4: 61-69.
Stuke, J.-H., 2007. Erste Nachweise von Lonchoptera nerana Vaillant, 1989 aus der Türkei (Diptera: Lonchopteridae). - Studia dipterologica 13(2): 331-332.
Vaillant, F., 1989. Contribution à l'étude des Diptères Lonchopteridae d'Europe et d'Afrique du Nord. - Bulletin de la Société vaudoise des Sciences Naturelles 79(3): 209-229.
Last modified 19/09/2019 10:37 by Paul BeukNo of couplets: 10

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Key
1a
Vein R1 with 1-2 dorsal spines considerably enlarged. These spines are at least twice as long and thick as other bristles covering the vein and are located either on the base or near tip of vein R1. T1 with 1-2 dorsal setae in addition to preapical. Postocular setae, including vertical setae, pale, at most a few black postoculars in middle of row (as in bifurcata); T2 with av seta one third before tip.
2
b
Vein R1 covered with equally long and thick spines.
3
 
2a
Enlarged spine on R1 is last bristle before tip of vein; F2 and F3 with long av seta in middle; pd seta on T2 inserted distal of upper d seta or at most at the same level. T1 usually with only one d seta in addition to preapical.
L. meijerei Collin, 1938
 
b
Enlarged spine on R1 at base of vein; F2 and F3 without av seta in middle; pd seta on T2 inserted proximal of upper d seta. T1 usually with two d setae in addition to preapical.
L. impicta Zetterstedt, 1848
 
 
3a
T2 with two d and one pd seta in addition to preapical; pd seta inserted distal of at the same level as upper d seta. Preapical ad on T1 absent. Males without strong pv setae on F2, females without small v or pv seta in middle of T2, at most with small av seta one third before tip.
4
b
T2 with two d setae only in addition to preapical; if pd seta is present (tristis female, strobli]), then it is situated proximal to upper d seta. Preapical ad on T1 present or absent. Males with or without strong pv setae on F2. Females with or without small v or pv seta in middle of T2.
9
 
4a
pd seta on T2 about as long or longer than upper d seta. T1 with two d and one pd setae in addition to preapical. Setae and hairs in upper half of postocular row black (including vertical), in lower half they are pale. Antennal scape usually yellow. T2 without av seta one
third before tip.
L. fallax De Meijere, 1906
 
b
pd seta on T2 shorter than upper d seta.
5
 
5a
All setae of postocular row black. T2 with small av seta one third before tip. F1 with 2 d setae in apical third. T1 usually with only 1 d seta in addition to preapicl. T3 with only one preapical seta dorsally.
L. nigrociliata Duda, 1927
 
b
At most a few postocular setae black. F1 usually with 3 d setae in apical third. T3 usually with two preapicals dorsally.
6
 
6a
Scutellum contrastingly black. Antennae pale, usually only the tip of first flagellomere and arista dark. Both frontal and peristomal setae predominantly pale. T1 with 2 d and 1 pd setae in addition to preapical. T2 wilhout av seta one third before tip.
L. scutellata Stein, 1890
 
b
Scutellum yellow to brown. At least first flagellomere of antennae wholly black. Most of peristomal setae as well as frontal setae black.
7
 
7a
T2 usuallly with a small av seta one third before tip. T1 with two d and 1 pd seta in addition to preapical. Vertical setae as well as most of postocular setae pale, usually only a few blaek setae in middle of row. Scape of antennae usually pale, others black. Preapical av seta on T2 longer than preapieal d. Two preapical anterior setae on T2 usually differentiated.
L. bifurcata (Fallen, 1810)
 
b
T2 usually without small av seta. T1 with 2-3 (exceptionally only 1) setae dorsally. Inner vertical setae usually black. Antennae either wholly black (lutea) or with scape and pedicel pale (nitidifrons). Preapical av seta on T2 shorter than preapical d. Two preapical anterior setae on T2 not differentiated.
8
 
8a
pd seta on T1 usually absent. Antennae wholly black. Male: hypopygium large, reaching end of third sternite; periandrium usually brown. Female: wings broadly ovale toward tip; anal vein usually ending distal to fork of vein M.
L. lutea Panzer, 1809
 
b
pd seta on T1 present. Antennal scape and pedicel yellow. Male: hypopygium small, reaching end of fourth sternite; periandrium yellow. Female: wings narrow, narrowing abruptly toward tip; anal vein usually ending proximal to fork of vein M.
L. nitidifrons Strobl, 1899
 
 
9a
F1 with one d seta in apical third. Mt2 about 2/3 as long as T2. T2 curved posleriorly in dorsal view, slightly so in female. Male: T1 with one d seta in addition to preapical; T3 strongly swollen apically; F2 with 1-2 very long pv setae in addition to a few shorter setae completing the row. Female: T1 with 1-2 d setae; T2 with a small v or pv seta in middle.
L. tristis Meigen, 1824
 
b
F1 with 2-3 d setae in apical third. Mt2 at most half as long as T2. T2 straight in doral view.
10
 
10a
T2 usually with three d setae. Wings uniformly brownish. Vertical setae black. Male: F2 with a row of strong but equally long pv setae; T1 with one d seta. Female: T1 usually with two d setae, T2 with a small v or pv seta in middle.
L. nerana Vaillant, 1989, alse keys out here but can be separated on basis of male genitalia (one large and one smaller seta on anterior gonapophyses, where strobli has two large setae; the large seta in nerana has a double curve rather than the simply curved setae in sitrobli.
L. strobli de Meijere, 1906
 
b
T2 with two d setae. Wings with dark spot near the tip. (Other characters to differentiate from strobli not known.)
L. pictipennis Bezzi, 1899
 
 
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