Paraclius digitatus, Zhang & Yang & Grootaert, 2007

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 : 54-56

Paraclius digitatus , new species

( Figs. 13–16 )

Material examined. – Holotype: male, Chek Jawa, 2 Dec.2003, mangrove, Mal. (23097, coll. P. Grootaert, Si 112, ZRC).

Paratypes: 3 females, same data as holotype ; 5 males, Sungei Buloh, 11 May.2005, Mal. 1 (25156, coll. PG, det. LZ, Si818, deposited in IOZ) ; 13 males, Sungei Buloh, 11 May.2005, Mal. 2, (25160, coll. PG, det. LZ, Si1238) ; 1 male, 1 female, (25230, coll. PG, det. PG, Si1247) ; 2 males, 3 females, Chek Jawa, 2 Dec.2003, (23097, coll. PG, det. PG, Si112) ; 1 male, Pulau Ubin, Chek Jawa, 11 Oct.2005 Mal., (25380, coll. PG, det. PG, Si1302) ; 1 male, 2 females, Pulau Ubin, 26 Oct.2005 Mal., (25399, coll. PG, det. PG, Si1134) ; 5 males, 5 females, Sungei Buloh, 22 April.2005, Mal. 2, (25078, coll. PG, det. PG, Si773) ; 3 males, 9 females, Sungei Buloh, 27 Apr.2005, Mal. 2, (25096, coll. PG, det. PG, Si1233) ; 5 males, Sungei Buloh, 11 May.2005, Mal. 1, (25159, coll. PG, det. LZ, Si818) ; 17 males, Sungei Buloh, 11 May.2005, Mal. 2, (25160, coll. PG, det. LZ, Si1238) ; 2 males, Sungei Buloh, 18 May.2005, Mal. 1, (25161, coll. PG, det. PG, Si1191) ; 2 males, Sungei Buloh, 18 May.2005, Mal. 2, (25162, coll. PG, det. PG, Si1201) ; 2 males, Sungei Buloh, 25 May.2005, Mal. 1, (25163, coll. PG, det. PG, Si1208) ; 2 males, Sungei Buloh, 25 May.2005, Mal. 2, (25164, coll. PG, det. PG, Si1212) ; 5 males, Sungei Buloh, 1 Jun.2005, Mal. 1, (25165, coll. PG, det. PG, Si1224) ; 2 males, 1 female, Sungei Buloh, 1 Jun.2005, Mal. 2, (25166, coll. PG, det. PG, Si1285) ; 3 males, Sungei Buloh, 10 Jun.2005, Mal. 2, (25168, coll. PG, det. PG, Si1227) ; 1 male, 2 females, Sungei Buloh, 15 Jun.2005, Mal. 2, (25170, coll. PG, det. PG, Si1253) ; 1 male, 5 females, Sungei Buloh, 22 Jun.2005, Mal. 2, (25172, coll. PG, det. PG, Si1298) ; 2 males, 4 females, Sungei Buloh, 6 Jul.2005, Mal. 1, (25197, coll. PG, det. PG, Si1296) ; 1 male, 4 females, Sungei Buloh, 27 Jul.2005, Mal. 1, (25272, coll. PG, det. PG, Si1291) ; 2 males, 5 females, Sungei Buloh, 27 Jul.2005, Mal. 2, (25273, coll. PG, det. PG, Si1283) ; 3 males, 4 females, Sungei Buloh, 5 Aug.2005, Mal. 1, (25284, coll. PG, det. PG, Si1261) ; 1 male, 2 females, Sungei Buloh, 5 Aug.2005, Mal. 2, (25285, coll. PG, det. PG, Si1265) ; 2 males, 9 females, Sungei Buloh, 26 Aug.2005, Mal. 1, (25319, coll. PG, det. PG, Si1270) ; 4 males, Sungei Buloh, 7 Sep.2005, Mal. 1, (25336, coll. PG, det. PG, Si1196) ; 1 male, Sungei Buloh, 7 Sep.2005, Mal. 2, (25337, coll. PG, det. PG, Si1189) ; 3 males, Sungei Buloh, 16 Sep.2005, Mal. 2, (25355, coll. PG, det. PG, Si1198) ; 2 males, Sungei Buloh, 28 Sep.2005, Mal. 1, (25431, coll. PG, det. PG, Si1175) ; 2 males, 1 female, Sungei Buloh, 28 Sep.2005, Mal. 2, (25432, coll. PG, det. PG, Si1172) ; 3 males, 1 female, Sungei Buloh, 14 Oct.2005, Mal. 1, (25393, coll. PG, det. PG, Si1274) ; 1 male, Sungei Buloh, 14 Oct.2005, Mal. 2, (25394, coll. PG, det. PG, Si1223) ; 1 male, Sungei Buloh, 28 Oct.2005, Mal. 1, (25406, coll. PG, det. PG, Si1220) ; 2 males, Sungei Buloh, 28 Oct.2005, Mal. 1, (25406, coll. PG, det. PG, Si1182) ; 1 male, 2 females, Sungei Buloh, 18 Nov.2005, Mal. 1, (25425, coll. PG, det. PG, Si1277) .

1 male, [no further locality data], 20/6-33, coll. D. H. Murphy, 20 Jun.1975 (on pin, ZRC, det. PG), quoted in Evenhuis & Grootaert as species B .

Diagnosis. – Antenna dark yellow, first flagellomere brown, 2.0 times as long as wide. Mid femur with 8 v (shorter than femur is wide); hind femur with row of black v. Cercus with a long digitiform process near its base.

Description. – Male: Body length 4.6–4.8 mm, wing length 3.8-4.0 mm.

Head metallic green with pale grey pollen. Face narrowing downward, distinctly narrower than first flagellomere. Hairs and bristles black. Mid and lower postocular bristles (including posteroventral hairs) pale. Antenna ( Fig. 14 ) dark yellow, first flagellomere brown, 2.0 times as long as wide; arista upper-apical, minutely pubescent with very short basal segment. Proboscis blackish brown with black hairs, palpus brown with black hairs and black apical bristle.

Thorax metallic green with pale grey pollen. Hairs and bristles black. Six strong dc, 6 pairs of acr; scutellum with 6 bristles (lateral pair longest). Propleuron with 1 black bristle on lower part. Legs yellow, fore coxa yellow with blackish base, mid coxa black with yellow apex, hind coxa mainly blackish. Hind femur with the most tip blackish. Fore tarsomeres 4–5 brownish, mid tarsus from tip of tarsomere 1 onward black, hind tarsus black. Hairs and bristles black. Mid and hind coxae each with 1 exterior bristle. Mid and hind femora each with 1 preapical bristle. Mid femur with 8 v (shorter than femur is wide); hind femur with row of black v. Fore tibia with 3 ad and 2 pd, apically with 2 short bristles; mid tibia with 4 ad, 3 pd and 1 av, apically with 4 bristles; hind tibia with 5 ad, 4 pd and 8 thin v, apically with 4 bristles. Hind tarsomere 1 with 4 v. Relative lengths of tibia and 5 tarsomeres LI 1.8: 1.0: 0.35: 0.25: 0.15: 0.2; LII 2.35: 1.2: 0.7: 0.5: 0.3: 0.2; LIII 2.5: 0.9: 1.4: 0.9: 0.4: 0.25. Wing ( Fig. 13 ) hyaline, veins black; R 4+5 and M distinctly convergent, CuAx ratio 0.6. Squama yellow with black hairs. Halter yellow.

Abdomen metallic green with pale grey pollen. Hairs and bristles black. Male genitalia ( Figs. 15–16 ): Epandrium longer than wide; lateral lobe long finger-like with 3 bristles; cercus with long digitiform process near its base, bearing long bristles; hypandrium thick.

Female: Similar to male except the first flagellomere shorter and 1.1 times as long as wide.

Distribution. – Singapore.

Etymology. – The specific name refers to the digitiform process of the cercus near the ventral apex.

Remarks. – Paraclius digitatus can be distinguished from other species by the cercus having a long digitiform process at its base.

Figures

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