Allohelea inflativena, Tokunaga, 1962

Lou, Jiawen, Wu, Xiaoxiang, Lin, Xiaodan & Li, Jiahui, 2025, Three new species of inflativena group of Allohelea Kieffer (Diptera: Ceratopogonidae) from Hainan Island, Zootaxa 5647 (6), pp. 558-570 : 559

Key to Adults of Allohelea inflativena group of Hainan Island ( A. fruticosa with no males’ records)

1 Females ............................................................................................. 2

- Males.............................................................................................. 7

2 Hind femur entirely dark brown.......................................................................... 3

- Hind femur dark brown with light area apically or subapically.................................................. 4

3 Spermathecae with short necks.................................................................. A. nigripes

- Spermathecae with very elongated necks...................................................... A. lurida sp. nov.

4 Hind femur with yellowish apex................................................................. A. fruticosa

- Hind femur with subapical pale band and dark apex.......................................................... 5

5 Hind tibia strongly thickened, with diameter about 3 times that of the midtibia, two spermathecae subspherical........... 6

- Hind tibia moderately thickened, with diameter less than 2 times that of the midtibia, two spermathecae spherical..................................................................................................... A. annulata

6 Spermathecae smoothly tapered from middle to neck........................................... A. hamata sp. nov.

- Spermathecae tapered from middle to neck with a faint swelling near neck.......................... A. forceps sp. nov.

7 Hind femur entirely dark brown.......................................................................... 8

- Hind femur dark brown with yellow area apically or subapically................................................ 9

8 Parameres strongly recurved distally, aedeagus distal long and slender, columnar........................... A. nigripes

- Parameres nearly vertical bending outwards distally, aedeagus bidivided distally...................... A. lurida sp. nov.

9 Gonostylus nearly straight; aedeagus with no lateral arm at base............................................... 10

- Gonostylus short, about 0.5 times as long as gonocoxite, strongly curved before midpoint; aedeagus with long and curved lateral arm at base....................................................................... A. forceps sp. nov.

10 Aedeagus bidivided, pointed distally, with lateral projection near apex............................. A. hamata sp. nov.

- Aedeagus smoothly narrowed to apex, with no emargination distally..................................... A. annulata