Tipula (Vestiplex), Bezzi, 1924

Yang, Qi-cheng, Li, Yan, Pan, Zhao-hui, Liu, Xiao-yan & Yang, Ding, 2021, Six new species of Tipula (Vestiplex) Bezzi (Diptera, Tipulidae) from Tibet, European Journal of Taxonomy 764 (1), pp. 152-192 : 154-155

Subgenus Vestiplex Bezzi, 1924

Key to species (male) of Vestiplex from Tibet, China

1. Posterior margin of tergite 9 broadly depressed, wide and flat ......................................................... 2

– Tergite 9 with appendages or divided into two parts ........................................................................ 4

2. Wing reduced in both sexes; inner gonostylus blunt .......................................................................... ................................................................. T. (V.) opilionimorpha opilionimorpha Savchenko, 1955

– Wing fully developed, or only reduced in female; inner gonostylus slender .................................. 3

3. Body mainly yellow; gonocoxite ends with strong spine .............. T. (V.) subscripta Edwards, 1928

– Body mainly blackish; gonocoxite unarmed ................................... T. (V.) scandens Edwards, 1928

4. Ventral surface of tergite 9 with a pair of appendages, strong or weak ............................................ 5

– Tergite 9 without appendages, divided into two parts, lobed ......................................................... 14

5. Ventral armature of tergite 9 black and bifid ................................. T. (V.) eurydice Alexander, 1961

– Ventral armature of tergite 9 yellow or not bifid .............................................................................. 6

6. Arms of ventral surface of tergite 9 leaf-shaped; suture between tergite 9 and gonocoxite with a spiny projection ....................................................................................... T. (V.) platyphylla sp. nov.

– Arms of ventral surface of tergite 9 not leaf-shaped; suture between tergite 9 and gonocoxite without a spiny projection .............................................................................................................................. 7

7. Ventral surface of tergite 9 with a pair of strong arms with granulated margin; without distinct appendages on sternite 9 ................................................................................................................... 8

– Arms of tergite 9 weak or smooth, without granulated margin; sternite 9 with appendages ......... 10

8. Posterior margin of gonocoxite spiny; posterior margin of inner gonostylus swollen ..................... 9

– Posterior margin of gonocoxite hook-like; inner gonostylus not swollen .......................................... .................................................................................................................. T. (V.) motuoensis sp. nov.

9. Inner gonostylus with lower beak; outer gonostylus anteriorly bent, posterior margin of basal half truncated ................................................................................................... T. (V.) uncinella sp. nov.

– Inner gonostylus without lower beak; outer gonostylus spoon-like ....... T. (V.) magatama sp. nov.

10. Arms of tergite 9 slender; lower beak of inner gonostylus with bent angle; apex of outer gonostylus truncated relatively ..........................................................................................................................11

– Arms of tergite 9 not slender, lower beak of inner gonostylus without bent angle; apex of outer gonostylus oval ............................................................................................................................... 12

11. Stripe of prescutum with dark brown margin; arms of tergite 9 sharp; appendages of sternite 9 truncated at tip ........................................................................... T. (V.) adungensis Alexander, 1963

– Stripe of prescutum with pale margin; arms of tergite 9 not sharp; appendages of sternite 9 with rather acute tip .......................................................................... T. (V.) rongtoensis Alexander, 1963

12. Posterior margin of gonocoxite short thorn-like; appendages of sternite 9 strong, bifurcate at the apex; lower beak of inner gonostylus usual ................................. T. (V.) distifurca Alexander, 1942

– Posterior margin of gonocoxite not special or hooked; appendages of sternite 9 not bifurcate at the apex, slender or short; lower beak of inner gonostylus rolled up …............................................... 13

13. Lower posterior margin of tergite 9 with a pair of puny arms; sternite 9 with a pair of slender appendages .......................................................................................... T. (V.) nayogabuensis sp. nov.

– Arms of tergite 9 strong; appendages of sternite 9 short ............ T. (V.) zayulensis Alexander, 1963

14. Adminiculum trident-shaped .......................................................................................................... 15

– Adminiculum not trident-shaped .................................................................................................... 17

15. Outer gonostylus with protrusion; sternite 9 with appendages .... T. (V.) nigroapicalis Brunetti, 1911

– Outer gonostylus without protrusion; sternite 9 without appendages ...............................................16

16. Lower posterior margin of gonocoxite with abundant long setae; lateral processes of adminiculum very short ........................................................................................................ T. (V.) bucera sp. nov.

– Lower posterior margin of gonocoxite without long setae; lateral processes of adminiculum long ..................................................................................................... T. (V.) alyxi s Alexander, 1963

17. Sternite 9 with appendages, the tips of which are shaped like a bird’s head ...................................... ........................................................................................................ T. (V.) avicularia Edwards, 1928

– Sternite 9 without appendages ................................................... T. (V.) himalayensis Brunetti, 1911