Teuchophorus, Loew, 1857

Grootaert, Patrick, 2006, The Genus Teuchophorus (Diptera: Dolichopodidae) In Singapore, Raffles Bulletin of Zoology 54 (1), pp. 59-82 : 60-61

Key to male Teuchophorus of Singapore

1. Third antennal segment more than 2.5 times as long as wide. ............................................................................................... 2

– Third antennal segment at most 1.5 times as long as wide, or shorter .................................................................................... 4

2. Arista longer than third antennal segment; third antennal segment nearly 3.5 times as long as wide ( Fig. 6 ) ................................. ............................................ T. temasek , new species (pg. 62)

– Arista shorter than third segment or even spine-like; third antennal segment more than 3.5 times as long as wide ( Figs. 9 , 12 ) ......................................................................................... 3

3. Arista shorter than base of third antennal segment. Third antennal segment 5.5 times a long as wide ( Fig. 12 ). Acr uniseriate .... ........................................ T. antennatus , new species (pg. 65)

– Arista well developed but shorter than length of third antennal segment ( Fig. 9 ). Third antennal segment 4.5 times as long as wide. No acr ............... T. neesoonensis , new species (pg. 64)

4. Acr present ............................................................................ 5

– No acr present ..................................................................... 11

5. Mid femur ventrally with a pair of very long bristles ( Fig. 2 ). Mid tibia ventrally near middle with a long flattened bristle .. ........................... T. ornatulus Meuffels & Grootaert (pg. 61)

– Mid femur ventrally without long bristles; mid tibia without flattened bristles .................................................................... 6

6. Third antennal segment about 1.5 times as long as wide; hind tibia with some strong dark bristles in the preapical comb ( Fig. 49 ) (sandy beach) ...................................................................... .......................... T. krabiensis Meuffels & Grootaert (pg. 78)

– Third antennal segment at most 1.2 times as long a wide, or shorter; hind tibia without stronger bristles in the preapical comb ............................................................................................... 7

7. Wing costa slightly thickened between R1 and R2+3, but not a real stigma ( Fig. 51 ) ................................................................. ....................... T. stenostigma Meuffels & Grootaert (pg. 79)

– Costa with at most a darkening of the area between R1 and R2+3 ............................................................................................... 8

8. Hind tibia posteriorly near base with about 5 erect hairs (mangrove) ................................................................................ ................... T. simplicissimus Meuffels & Grootaert (pg. 73)

– Hind tibia posteriorly without such hairs ............................. 9

9. Tip of cercus darkened and with long bristles ......................... ...................................... T. tiomanensis , new species (pg. 75)

– Tip of cercus not darkened and without long bristles ........ 10

10. Fore leg with a basal ventral spinule on first tarsomere. Surstyli short, truncate; cerci longer than surstyli ( Fig. 47 ) .................. ........................................ T. bulohensis , new species (pg. 77)

– No spinule on fore metatarsus. Aedeagal complex contrastingly black and large ( Fig. 39 ) ..... T. limosus , new species (pg. 74)

11. Mid femur ventrally with about 4-5 short spine-like bristles (Fig. 26) .................................. T. spinulosus , new species (pg. 71)

– Mid femur ventrally without or only minute bristles ......... 12

12. Third antennal segment about 1.5 times as long as wide, with a fine elongated tip ( Fig. 28 ) ....................................................... ....................................... T. acuminatus , new species (pg. 72)

– Third antennal segment shorter than wide ......................... 13

13. Hypandrium symmetrical ( Fig. 23 ). Prosternum yellow, with a central brown spot ................. T. meieri , new species (pg. 69)

– Hypandrium asymmetrical ( Fig. 18 ). Prosternum entirely brown with a central black stripe ................................................... 14

14. Right arm of hypandrium much longer than left arm and wrinkled laterally ( Fig. 20 ); ventral surstylus ventrally indented, bearing two strong bristles ( Thailand) ...................................... .............................. T. pauper Meuffels & Grootaert (pg. 68)

– Right arm of hypandrium almost as long as left arm; tip of right arm smooth ( Fig. 19 ); ventral surstylus ventrally not indented ................................... T. singaporensis , new species (pg. 66)

Figures

Figs. 5-8. Teuchophorus temasek, new species: 5, female antenna; 6, male antenna; 7, hypopygium ventral view; 8, hypopygium lateral view. D: dorsal; V: ventral.

Figs. 9-11. Teuchophorus neesoonensis, new species, male: 9, antenna; 10, hypopygium ventral view; 11, hypopygium lateral view.

Figs. 12-14. Teuchophorus antennatus, new species, male: 12, antenna; 13, hypopygium ventral view; 14, hypopygium lateral view.

Figs. 1-4. Teuchophorus ornatulus Meuffels & Grootaert, male: 1, antenna; 2, mid leg; 3, hind leg; 4, hypopygium lateral view.

Figs. 48-49. Teuchophorus krabiensis Meuffels & Grootaert, male: 48, antenna; 49, hind leg anterior view with detail of the black bristles in the apical comb in posterior view.

Figs. 50-55. Teuchophorus stenostigma, male: 50, antenna; 51, wing; 52, mid leg anteriorly; 53, hind leg anteriorly; 54, hypopygium ventral view; 55, hypopygium lateral view.

Figs. 45-47. Teuchophorus bulohensis, new species, male: 45, antenna; 46, hypopygium ventral view; 47, hypopygium lateral view.

Figs. 35-39. Teuchophorus limosus, new species male. 35. antenna; 36. mid leg with detail of ventral spinules on apical third of tibia; 37. hind leg; 38. hypopygium ventral view; 39. hypopygium lateral view.

Figs. 28-30. Teuchophorus acuminatus, new species, male: 28, antenna; 29, hypopygium ventral view; 30, hypopygium lateral view.

Figs.22-24. Teuchophorus meieri, new species, male:22, antenna; 23, hypopygium ventral view; 24, hypopygium lateral view.hy: hypandrium; del: dorsal epandrial lobe; el: epandrial lobe.

Figs. 15-19. Teuchophorus singaporensis, new species, male: 15, antenna; 16, hind leg; 17, tarsomere 1 of hind leg; 18, hypopygium ventral view, with detail of tip of aedeagus and ventral epandrial lobe; 19, hypopygium lateral view. ae: aedeagus; del: dorsal epandrial lobe; hy: hypandrium; L: left; R: right.

Figs. 20-21. Teuchophorus pauper Meuffels & Grootaert, male: 20, hypopygium ventral view, with detail of dorsal epandrial lobe (del), right hypandrial arm and tip aedeagus; 21, hypopygium lateral view. L: left; R: right.