KEY TO SWEDISH GENERA AND SPECIES OF DOLICHOPODIDAE

by I.Ya. Grichanov

Igor Grichanov, All-Russian Institute of Plant Protection, Podbelskogo 3, St. Petersburg, Pushkin, Russia.E-mail: grichanov@hotbox.ru
Last updated: 27 April 2003 

Genus Thrypticus Gerstcker
See pictures here
1. Scutellum with 6-8 marginal setae; epistome at least 4 times higher than clypeus; femora yellow; M1+2 and R4+5 slightly but distinctly convergent; 2.5-3.5. Fig. 209 ... smaragdinus Gerstcker
Scutellum with 2 strong marginal setae; epistome not more than 2.5 times higher than clypeus; M1+2 and R4+5 usually parallel; body size usually less than 2.5 mm ... 2
2. Femora mainly yellow, at most slightly darkened at middle; antenna black; distal part of CuA1 3.5-4 times longer than m-cu; 1.2-2.0. Fig. 201... atomus Frey
Femora mostly dark ... 3

3. Males ... 4

Females ... 11

4. Wing with anal lobe quite undeveloped, narrow at base and widening out to a broadly rounded tip; apical section of M1+2 longer than basal section measured from r-m; R4+5 and M1+2 slightly divergent in apical half, then converging at apex; 1.9-2.25. Fig. 202... cuneatus(Becker)

Wing of normal shape, with distinct anal lobe; apical section of M1+2 vein longer than basal section measured as above; R4+5 and M1+2 either parallel or slightly converging in at least the greater part of apical half, though sometimes diverging at apex ... 5

5. Scutellum with 4 bristles, 2 strong and 2 much weaker. Front and mid tibiae clear yellow; 1.75-2.5... 5

Only 2 scutellar setae, strong; tibiae darkened, at least brownish ... 6

5. Distal thin part of hypandrium as long as or longer than proximal broad part. Fig. 204 ... intercedens Negrobov

 Distal thin part of hypandrium 1/3 shorter than proximal broad part. Fig. 207 ... pollinosus Verrall

6. Mid tibia without an anterior bristle at basal third; stylus long and slender; apical section of CuA1 2.5 times as long as m-cu; 1.6-2.8. Fig. 206 ... nigricauda Wood

Mid tibia with an anterior bristle at basal third; apical section of CuA1 either twice or three times as long as outer m-cu ... 7

7. Antennal stylus distinctly pubescent, strongly thickened and almost uniformly thick throughout; palpi short and broad; R4+5 and M1+2 practically parallel in apical half, curving rearwards in apical third; hind basitarsus about 0.75 times length of 2nd segment; 2.0-2.5. Fig. 203 ... divisus Strobl

Antennal stylus practically bare and more slender ... 8

8. Palpi short, hardly longer than postpedicel; stylus very slender and tapering to a fine tip; mid tibia entirely brownish; 1.75-2.0.Fig. 210... tarsalis Parent

Palpi decidedly longer than postpedicel; stylus distinctly thicker and less tapering; mid tibia paler (more yellowish) posteriorly ... 9

9. R4+5 and M1+2 distinctly divergent at apex; stylus uniformly somewhat thickened throughout; about 2.0. Fig. 205... laetus Verrall

R4+5 and M1+2 not divergent at apex; stylus rather more slender and somewhat tapering ... 10

10. R4+5 and M1+2 distinctly convergent at apex; mesonotum densely pollinose; clypeus mat; distal process of cercus 4 times longer than high at base (lateral view); 1.25. Fig. 208 ... pruinosus Parent

R4+5 and M1+2 almost parallel; mesonotum weakly pollinose; face shining; distal process of cercus not more than 2.5 times longer than high; 1.5-1.9. Figs. 200(1-2) ... bellus Loew

11. Mid tibia without an anterior bristle at basal third; stylus long, slender and tapering ... 12

Mid tibia with an anterior bristle at basal third ... 14

12. Legs entirely black, or partly metallic blackish green, at most knees and hind tibia sometimes rusty yellow; 2.75-3.0 ... cuneatus(Becker)

All tibiae brownish yellow ... 13

13. Apical abdominal tergite with a small raised hump on hind margin; fore basitarsus decidedly more than half as long as tibia; apical section of CuA1 more than 2.5 times as long as m-cu; 1.6-2.8 ... nigricauda Wood

Apical abdominal tergite not as above; fore basitarsus hardly half as long as tibia; apical section of CuA1 not more than twice as long as m-cu; about 2 ... tarsalis Parent

14. R4+5 and M1+2 divergent at apex; stylus almost uniformly somewhat thickened throughout; 2.0-2.25 ... laetus Verrall

R4+5 and M1+2 not divergent at apex ... 15

15. Fore and mid tibiae yellow; apical section of M1+2 hardly 1.5 times as long as basal section measured from r-m; 2.0-2.5 ... pollinosus Verrall

Tibiae darkened, at least brownish; apical section of M1+2 quite twice as long as basal section measured as above ... 16

16. Strong thoracic bristles pale yellow; R4+5 and M1+2 distinctly, even though only slightly, convergent in apical half; mid basitarsus often mainly yellow; 1.75-2.0 ... bellus Loew

Strong thoracic bristles brownish black to black; R4+5 and M1+2 practically parallel in apical half; mid tarsus dark; 2.5-2.75 ... divisus Strobl


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