Bicellaria

Barták, Miroslav, Plant, Adrian & Kubík, Štěpán, 2013, Species of Bicellaria (Diptera: Hybotidae) from Asia, Zootaxa 3710 (3), pp. 233-256 : 253-254

Key to Bicellaria of Asia

Note. When determining the identity of Asian species of Bicellaria it is important to also consult the key of Barták and Kubík (2013) to European species. The distribution of most species in the Asian part of the Palaearctic remains largely unknown and many “European” species in fact have broader distribution [for example, the surprising finding of B. longisetosa in the Amur region and B. intermedia in the Bajkal area as reported in Barták & Kubík (2013)]. It is likely that other species presently known only from Europe will eventually be found in Asia.

1 Palpus with 4 or more black setae........................................................................ 2

- Palpus with 1–3 setae (those occurring on the palpifer are not counted)........................................... 5

2 (1) Halter yellow. Mesoscutum with stripes. Hind femur spinose. Male phallic hooks curiously shaped ( Fig. 7 ) ( Israel).............................................................................................. B. femorata Collin

- Halter brown to blackish-brown. Mesoscutum without stripes. Hind femur with only ordinary setae. Male phallic hooks differ- ent................................................................................................ 3

3 (2) Third antennal segment without long dorsal setae. Male without hypandrial processes ( Fig. 6 ). Female with pruinose visible part of 8th sternite ( China: Yunnan)......................................................... B. farkaci sp. nov.

- Third antennal segment with long dorsal seta(e) (if without this seta(e), follow couplet 5). Male with hypandrial processes. Female with visible part of 8th sternite polished............................................................. 4

4 (3) Second antennal segment without conspicuously long lateral seta. Altogether 6–7 setae in intra- and posthumeral areas. Male hypandrial processes very narrow at apex, long setose even on base (see Kato 1971, fig. 4A) ( Japan)...... B. japonica Kato

- Second antennal segment with at least 1 very long lateral or lateroventral seta 0.2–0.3 mm long. More than 10 setae in intra- and posthumeral areas. Male hypandrial processes broad at apex, short setose on base (see Barták & Kubík 2013, fig. 20) (Europe, East Palaearctic)............................................................ .. B. longisetosa Chvála

5 (1) Hind basitarsus distinctly swollen, more than 2X as broad as hind tarsomere 3. Face very narrow (0.02 mm, about as 1–2 fac- ets). Fore tibia without posteroventrals on apical third in exactly posterior view ( Japan)................. B. flavipes Kato

- Hind basitarsus not swollen, less than 2X as broad as hind tarsomere 3. Other characters different (except B. vana and B. kore- ana sp. nov.)......................................................................................... 6

6 (5) Third antennal segment with 1 or more dorsal seta(e) (Europe, Siberia)....................... B. intermedia Lundbeck

- Third antennal segment without long seta(e) dorsally........................................................ 7

7 (6) Fore tibia with ventral pilosity on apical third at most slightly shorter than on fore basitarsus, posteroventral setae at most as long as pilosity and usually shorter than depth of tibia (observe in exactly posterior view)............................ 8

- Fore tibia with ventral pilosity on apical third at most 1/3 as long as on fore basitarsus and/or posteroventral setae at least 2X as long as pilosity and usually longer than depth of tibia......................................................... 9

8 (7) Body entirely black setose. Male phallic hook slightly bent (see Barták & Kubík 2013, fig. 43)............ B. vana Collin

- At least first two abdominal segments pale setose on sides. Male phallic hook strongly bent ( Fig. 20 ) (East Palaearctic)......................................................................................... B. koreana sp. nov.

9 (7) Abdomen partly pale setose (at least on sides of tergite 2)..................................................... 10

- Abdomen entirely black setose......................................................................... 13

10 (9) Halter brown to yellowish-brown. Legs polished. Male: two phallic hooks present, hoe-like broadened (best visible from behind—see Barták & Kubík 2013, fig. 35) (Palaearctic species?)......................... B. stackelbergi Tuomikoski

- Halter yellow. Legs microtrichose. Male: 1–2 hook(s) of phallus present, if two, then not broadened................... 11

11 (10) Hind tibia very slightly swollen. Male left epandrial lamella large, almost globular ( Fig. 11 ), hypandrial processes bifurcate apically ( Fig. 10 ). Female 5th tergite microtrichose ( Uzbekistan)............................. B. globulicauda sp. nov.

- Hind tibia distinctly swollen. Male left epandrial lamella triangle-shaped as usual, not conspicuously large, hypandrial pro- cesses simple. Female 5th tergite polished................................................................. 12

12 (11) Setae on mesoscutum all pale ( Uzbekistan)............................................. B. chimganensis sp. nov.

- Setae on mesoscutum all black ( Uzbekistan).......................................... B. amankutanensis sp. nov.

13 (9) Hind tibia with 2 long and strong anteroventral/ventral setae ( Fig. 26 ) ( Japan)........................ B. woodi sp. nov.

- Hind tibia without conspicuously long and strong anteroventral/ventral setae..................................... 14

14 (13) Male.............................................................................................. 15

- Female........................................................................................... 21

15 (14) Two phallic hooks long, protruding beyond postgonites with tip visible below postgonites in lateral view, the shorter hook more than 2/3 as long as the longer hook. Usually more than 15 setae in intrahumeral and posthumeral areas. Hypandrial processes either broad or narrow and apically axe-like broadened................................................. 16

- Only a single long phallic hook present, the shorter hook less than 1/3 as the longer hook, not protruding beyond postgonites and not visible below postgonites inlateral view. Usually less than 14 setae in intrahumeral and posthumeral areas (except B. setitibia sp. nov.). Hypandrial processes narrow or broad ( B. thailandica sp. nov.)................................ 18

16 (15) Postgonites broadened laterally, narrow in lateral view, hypandrial processes very short (usually less than 0.11 mm) (see Barták & Kubík 2013, figs 41, 42) (Holarctic species)............................................ B. uvens Melander

- Postgonites triangle-shaped in lateral view, hypandrial processes longer (usually more than 0.12 mm)................. 17

17 (16) Hypandrial processes narrow, axe-like broadened apically, with a single long seta in the middle of apex. Postgonites elongate triangular ( Fig. 15 ) ( Georgia)............................................................. B. kovalevi sp. nov.

- Hypandrial processes strip-like, not broadened apically, without any long seta. Postgonites short triangular ( Fig. 22 ) (East Palaearctic)......................................................................... B. shatalkini sp. nov.

18 (15) Mid tibia with 4–5 pairs of long setae dorsally, at least one pair on apical fourth of tibia. About 15 setae in posthumeral and intrahumeral areas. Hypopygium in Figs 12 and 17 (North Ossetia-Alania, Georgia)................. B. setitibia sp. nov.

- Mid tibia with at most 3 pairs of long setae dorsally, lacking even one pair on apical fourth of tibia. Usually less than 14 setae in posthumeral and intrahumeral areas (except some B. ingrata ).............................................. 19

19 (18) Legs with generally longer setae (even on hind basitarsi). Hypandrial processes broad, median extensions of postgonites setose and saw-toothed ventrally ( Figs 24, 25 ) and ventral apodeme very narrow in dorsal view (about as broad as phallic hook) ( Thailand)......................................................................... B. thailandica sp. nov.

- Legs with generally shorter setae (including hind basitarsi). Male hypandrial processes long and narrow. Remaining characters in different combination.............................................................................. 20

20 (19) Face narrower (usually less than 0.04 mm, diameter of 2–3 facets). Prescutellar depression evenly dark. Usually less than 9 setae in intrahumeral and posthumeral areas. Median extensions of postgonites smooth ventrally (see Barták & Kubík 2013, fig. 33) (Palaearctic?).................................................................... B. spuria (Fallén)

- Face broader (usually more than 0.05 mm, diameter of 4–5 facets). Prescutellar depression lighter than disc of scutum. Usually more than 10 setae in intrahumeral and posthumeral areas. Median extensions of postgonites saw-toothed ventrally ( Fig. 13 ) ( Israel)............................................................................... B. ingrata Collin

21 (14) Mid tibia with 4–5 pairs of long setae dorsally, at least one pair on apical fourth of tibia. About 10 setae in posthumeral and intrahumeral areas, abdominal tergites 6–8 shining except dorsoapical corner....................... B. setitibia sp. nov.

- Mid tibia with at most 3 pairs of long setae dorsally, lacking one pair on apical fourth of tibia (females belonging to this section are difficult to differentiate without associated males)....................................................... 22

22 (21) Legs with generally longer setae (even on hind basitarsi), ground ciliation longer than diameter of limbs. Halter yellowishbrown............................................................................. B. thailandica sp. nov.

- Legs with generally shorter setae (including hind basitarsi), ground ciliation at most as long as diameter of limbs. Halter brown to brownish-black................................................................................... 23

23 (22) Usually 2 dorsal setae on fore trochanter. Usually more than 9 setae in posthumeral and intrahumeral areas. Hind tibia swollen (usually about 0.13 mm at broadest point).................................................. B. uvens Melander

- Not as above....................................................................................... 24

24 (23) Face broad (usually more than 0.05 mm, diameter of 4–5 facets). Usually more than 9 setae in posthumeral and intrahumeral areas. Legs longer setose (mid femur in middle with anteroventrals at least half as long as depth of femur). B. ingrata Collin

- Face narrow (usually less than 0.04 mm, diameter of 2–3 facets). Usually less than 8 setae in posthumeral and intrahumeral areas. Legs shorter setose (mid femur in middle with anteroventrals at most ¼ as long as depth of femur)............. 25

25 (24) Abdominal tergite 8 entirely microtrichose................................................ B. shatalkini sp. nov.

- A bdominal tergite 8 shining at least on basal third........................................................... 26

26 (25) Broad part of third antennal segment usually shorter than 0.11 mm. Hind basitarsus slightly broader than second hind tarsomere.................................................................................. B. kovalevi sp. nov.

- Broad part of third antennal segment usually longer than 0.12 mm. Hind basitarsus equally thick as second hind tarsomere......................................................................................... B. spuria (Fallén)

Figures

FIGURES 1 – 8. Hypandrium (ventral view) and phallus with postgonites (lateral view). 1 – 2. Bicellaria amankutanensis sp. nov. 3 – 4. B. chimganensis sp. nov. 5 – 6. B. farkaci sp. nov. 7 – 8. B. femorata Collin. Scale bars = 0.10 mm.

FIGURES 18 – 26. Hypandrium (ventral view) and phallus with postgonites (lateral view). 18 – 19. Bicellaria furcifer Melander. 20 – 21. B. koreana sp. nov. 22 – 23. B. shatalkini sp. nov. 24 – 25. B. thailandica sp. nov. 26. Tip of hind tibia and basitarsus B. woodi sp. nov. Scale bars = 0.10 mm.

FIGURES 9 – 17. 9 – 10. Hypandrium (ventral view) and phallus with postgonites (lateral view) of Bicellaria globulicauda sp. nov. 11. Epandrium (lateral view) B. globulicauda sp. nov. 12. Hypandrium (ventral view) B. setitibia sp. nov. 13 – 16. Hypandrium (ventral view) and phallus with postgonites (lateral view). 13 – 14. B. ingrata Collin. 15 – 16. B. kovalevi sp. nov. 17. Phallus with postgonites (lateral view) B. setitibia sp. nov. Scale bars = 0.10 mm.