Brachyneurina

Jiao, Ke-Long, Mu, Yi-Ran & Bu, Wen-Jun, 2017, Notes on the Genus Mamaev (Diptera: Cecidomyiidae) with Description of Two New Species from China., Zoological Studies 56 (4), pp. 1-7 : 5

Key to males of all known Brachyneurina

species

1. Gonocoxite with two mediobasal lobes ( Fig. 2A ) ...............2

- Gonocoxite with one mediobasal lobe ( Fig. 3A )................. 3

2. Aedeagus with the apex distinctly broadened; hypoproct apically truncated; cerci separated with a U-shaped depression forming two sub-triangular lobes ( Fig. 2C )......... ............................. .... Brachyneurina hemisphaerica sp. nov.

- Aedeagus gradually tapered from base to apex, with the apex not broadened; hypoproct apically rounded; cerci separated with a V-shaped incision forming two semicircular lobes................................................................. ............................. .. Brachyneurina xylophila Mamaev, 1967

3. Gonocoxite with one sub-conical mediobasal lobe............... ............................. .. Brachyneurina angulata Mamaev, 1967

- Gonocoxite with one sub-hemispheric mediobasal lobe ( Fig. 3A ) ......................................................................................4

4. Aedeagus distinctly constricted in the middle with four pairs of sclerotized prominences surrounding aedeagus and extending downwards on both sides; gonostylus gradually tapered from base to apex; hypoproct apically slightly emarginated; cerci forming two sub-rhombic lobes ( Fig. 3C ).................................... Brachyneurina rhombica sp. nov.

- Aedeagus without constriction or any other modifications; gonostylus approximately aequilate from sub-base to middle; hypoproct apically rounded; cerci forming two semicircular lobes................................................................. ............... Brachyneurina peniophorae Harris & Evans, 1979

Figures

Fig. 2. Brachyneurina hemisphaerica sp. nov. Male holotype (NKUCecid. No. BBI001) (A-C): (A), Genitalia (dorsal view, cerci and hypoproct removed). (B), Genitalia (dorsal view). (C), cerci and hypoproct (dorsal view).

Fig. 3. Brachyneurina rhombica sp. nov. Male holotype (NKUCecid. No. BBL001) (A-C): (A), Genitalia (dorsal view, cerci and hypoproct removed). (B), Genitalia (dorsal view). (C), cerci and hypoproct (dorsal view).