Paraclius, Loew, 1864

Zhang, Lili, Yang, Ding & Grootaert, Patrick, 2007, Paraclius (Diptera: Dolichopodidae: Dolichopodinae) Of Singapore, With New Species From Mangroves, Raffles Bulletin of Zoology 55 (1), pp. 49-62 : 50

Key to Paraclius (males) of Singapore

1. Scutellum with 4 bristles; hind femur with 2 preapical, anterodorsal bristles (freshwater habitats) ................................ ............................................................. P. abbreviatus Becker

– Scutellum with 6 bristles; hind femur with 1 preapical, anterodorsal bristle ................................................................ 2

2. Femora entirely black (freshwater habitats) ............................. ................................................................. P. adligatus Becker

– Femora at most with black tip (mangrove) .......................... 3

3. Cercus with a subapical notch ( Fig. 11 ), bearing a long curved bristle .............................................. P. crassatus , new species

– Cercus without subapical notch, bearing bristles of subequal size ............................................................................................... 4

4. Cercus yellow, elongate triangular with brown, clavate marginal bristles ( Fig. 6 ) ................................ P. asiobates new species

– Cercus mainly brown to black, without clavate bristles ...... 5

5. First flagellomere elongated, at least twice as long as wide ... ............................................................................................... 6

– First flagellomere not elongated, at most 1.5 times as long as wide ....................................................................................... 8

6. Mid femur with row of 8 ventral bristles; cercus with long basoventral process ( Fig. 15 ); aedeagus without denticles ( Fig. 16 ) ................................................... P. digitatus , new species

– Mid femur with 1-4 long ventral bristles near base; cercus without basoventral process; aedeagus with denticles ......... 7

7. Hind femur with 5 ventral bristles; mid femur with 1 long ventral bristle on basal third and no spinules at base; fore tarsus completely yellow ...................... P. polychaetus , new species

– Hind femur without ventral bristles; mid femur with 3-4 long ventral bristles in basal quarter and a row of minute spinules near base ( Fig. 19 ); fore tarsomeres 3-5 black ........................ .............................................................. P. obtus , new species

8. Mid and hind femur with respectively with 5 and 4 ventral bristles near base; aedeagus without denticles ( Fig. 33 ); cercus club-shaped ( Fig. 32 ) ............ P. singaporensis , new species

– Mid and hind femur with a row of 10 ventral bristles; aedeagus with denticles ( Fig. 29 ); cercus ovoid ( Fig. 28 ) ....................... .......................................................... P. serratus , new species

Figures

Figs. 8–12. Paraclius crassatus, new species: 8, wing; 9, antenna; 10, mid femur, anterior view; 11, cercus; 12, male genitalia.

Figs. 5–7. Paraclius asiobates, new species: 5, antenna; 6, male genitalia; 7, surstyli.

Figs. 13–16. Paraclius digitatus, new species: 13, wing; 14, antenna; 15, cercus; 16, male genitalia.

Figs. 17–21. Paraclius obtus, new species: 17, wing; 18, antenna; 19, apex of mid femur, posterior view; 20, cercus; 21, male genitalia.

Figs. 30–34. Paraclius singaporensis, new species: 30, wing; 31, antenna; 32, cercus; 33, hypandrium in ventral view; 34, male genitalia.

Figs. 26–29. Paraclius serratus, new species: 26, wing; 27, antenna; 28, cercus; 29, male genitalia.