Sobarocephala

Sasakawa, Mitsuhiro, 2011, Oriental species of clusiid flies (Diptera: Clusiidae: Clusiinae), Zootaxa 3038, pp. 1-28 : 7

Key to Oriental species of Sobarocephala

1. Scutellum entirely or largely brown to black................................................................ 2

- Scutellum entirely yellow; mesoscutum with black semicircular marking along anterior margin and a pair of brown stripes between dc- and sa-lines; surstylus narrow, L-shaped, with about 30 spinules ( Fig. 15 ; Thailand)...... S. geniculata sp. nov.

2. Abdomen dark brown to brownish black; mesoscutum bi- or trivittate............................................ 3

- Abdomen with anterior tergites yellow; mesoscutum bivittate; r-m before middle level of cell dm, ultimate section of CuA1 2/3 as long as penultimate section ( Nepal; male unknown)................................. S. nepalensis Sasakawa, 1979

3. Face entirely brownish black; mesoscutum trivittate; fore tibia and tarsus brown; surstylus narrowing distally, bearing six spinules along inner ventroapical margin ( Fig. 13 ); distiphallus shieldlike ( Fig. 14 ; Philippines)....... S. fuscifacies sp. nov.

- Face yellow to pale brown............................................................................. 4

4. Mesoscutum largely brownish black, separated narrowly by median longitudinal brown line behind transverse suture; legs entirely yellow; surstylus lobate, longer than epandrial height, with about 35 spinules; distiphallus spatulate ( Figs 19, 20 ; Thailand)............................................................................... S. megastylis sp. nov.

- Mesoscutum clearly vittate.............................................................................. 5

5. Mesoscutum bivittate laterad of dc-lines; first antennal flagellomere brown on dorsal half of outer side; fore tarsus brown; surstylus lobate, slightly shorter than epandrial height, with 11–13 spinules ( Malaysia, Philippines)..................................................................................................... S. vockerothi Sasakawa, 1993

- Mesoscutum trivittate; first antennal flagellomere with brown spot surrounding base of arista or dorsal stripe............. 6

6. Abdomen entirely brownish black; dc three; surstylus 1/2 as high as epandrium, narrowing distally, with 9 or 10 spines and two spinules ( Figs 6, 7 ; Philippines).......................................................... S. baculigera sp. nov.

- Abdomen with posterior tergites brownish yellow; dc two; surstylus almost as high as epandrium, setose................ 7

7. Scutellum, anepisternum, and mediotergite entirely brownish black............................................. 8

- Scutellum and mediotergite yellow, each with brown central stripe, anepisternum brown dorsally; paraphallus with claw-like process distally [ Japan (Ryukyus)]................................................... S. uncinata Sueyoshi, 2006

8. Face and clypeus brown; first antennal flagellomere with brown dorsal stripe; M1 ratio 3.0; mid coxa with small brown central spot (male unknown; Philippines)..................................................... S. hirsutiseta ( Frey, 1928)

- Face, clypeus, and mid coxa entirely yellow; first flagellomere with small brown spot surrounding base of arista; M1 ratio 4.5; paraphallus with serration of minute spinules ( Fig. 11 ; Malaysia)................................ S. eurystylis sp. nov.

Figures

FIGURES 12 – 18. Male genitalia of Sobarocephala fuscifacies sp. nov. (12 – 14, holotype) and S. geniculata sp. nov. (15 – 18, holotype). See Figs 1 – 3 for explanation of parts; 14, phallus, ventral view; 18, distal part of phallus, ventral view. Scale = 0.1 mm.

FIGURES 19 – 24. Male genitalia of Sobarocephala megastylis sp. nov. (19 – 22, holotype) and Tetrameringia maculata sp. nov. (23, 24, paratype). See Figs 1 – 3 for explanation of parts. Scale = 0.1 mm.

FIGURES 6 – 11. Male genitalia of Sobarocephala baculigera sp. nov. (6 – 8, holotype) and S. eurystylis sp. nov. (9 – 11, holotype). See Figs 1 – 3 for explanation of parts; 7, 10, anterior view, left half, with detail of cercal armature of former. Scale = 0.1 mm.