Paraclius serratus, 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 : 58-60

Paraclius serratus , new species

( Figs. 26–29 )

Material examined. – Holotype: male, Sungei Buloh, 11 May 2005, Mal. 1, (25159, coll. P. Grootaert, Si 818, ZRC).

Paratypes – 4 males, Lim Chu Kang, 9 Dec.2002 (22056, coll. PG, det. LZ, Si358, deposited in IOZ) ; 1 male, 1 female, Pulau Ubin, Chek Jawa, 1 Dec.2003 (Si132, coll. PG, det. LZ, 23119) ; 2 males, 2 females, (25230, coll. PG, det. PG, Si1246) ; 1 male, 1 female, Chek Jawa, 11 Dec.2003, (23119, coll. PG, det. PG, Si132) ; 4 males, Lim Chu Kang, 9 Dec.2002, (22056, coll. PG, det. LZ, Si358) ; 2 males, Pulau Ubin, 26 Oct.2005 mal, (25399, coll. PG, det. PG, Si1133) ; 3 males, 2 females, Sungei Buloh, 22 Apr.2005, Mal. 2, (25078, coll. PG, det. PG, Si774) ; 2 males, 6 females, Sungei Buloh, 27 Apr.2005, Mal. 2, (25096, coll. PG, det. PG, Si1234) ; 3 males, Sungei Buloh, 11 May.2005, Mal. 1, (25159, coll. PG, det. LZ, Si817) ; 17 males, Sungei Buloh, 11 May.2005, Mal. 2, (25160, coll. PG, det. LZ, Si1240) ; 1 male, Sungei Buloh, 18 May.2005, Mal. 2, (25162, coll. PG, det. PG, Si1203) ; 2 males, Sungei Buloh, 25 May.2005, Mal. 2, (25164, coll. PG, det. PG, Si1213) ; 4 males, 1, Sungei Buloh, 1 Jun.2005, Mal. 2, (25166, coll. PG, det. PG, Si1284) ; 1 male, 5 females, Sungei Buloh, 10 Jun.2005, Mal. 1, (25167, coll. PG, det. LZ, Si1243) ; 1 male, 5 females, Sungei Buloh, 10 Jun.2005, Mal. 1, (25167, coll. PG, det. PG, Si827) ; 3 males, Sungei Buloh, 10 Jun.2005, Mal. 2, (25168, coll. PG, det. PG, Si1231) ; 2 males, 1 female, Sungei Buloh, 15 Jun.2005, Mal. 2, (25170, coll. PG, det. PG, Si1254) ; 1 female, Sungei Buloh, 22 Jun.2005, Mal. 2, (25172, coll. PG, det. PG, Si1299) ; 2 females, Sungei Buloh, 6 Jul.2005, Mal. 1, (25197, coll. PG, det. PG, Si1297) ; 2 females, Sungei Buloh, 20 Jul.2005 ,, Mal. 1, (25264, coll. PG, det. PG, Si1257) ; 2 females, Sungei Buloh, 27 Jul.2005 ,, Mal. 1, (25272, coll. PG, det. PG, Si1292) ; 1 female, Sungei Buloh, 5 Aug.2005 ,, Mal. 1, (25284, coll. PG, det. PG, Si1263) ; 1 male, 2 females, Sungei Buloh, 5 Aug.2005, Mal. 2, (25285, coll. PG, det. PG, Si1264) ; 1 male, 5 females, Sungei Buloh, 26 Aug.2005, Mal. 1, (25319, coll. PG, det. PG, Si1269) ; 1 male, Sungei Buloh, 7 Sep.2005, Mal. 1, (25336, coll. PG, det. PG, Si1197) ; 13 females, Sungei Buloh, 7 Sep.2005, Mal. 2, (25337, coll. PG, det. PG, Si1188) ; 13 females, Sungei Buloh, 16 Sep.2005, Mal. 1, (25354, coll. PG, det. PG, Si1185) ; 1 male, 16 females, Sungei Buloh, 28 Sep.2005, Mal. 1, (25431, coll. PG, det. PG, Si1176) ; 2 males, 13 females, Sungei Buloh, 28 Sep.2005, Mal. 2, (25432, coll. PG, det. PG, Si1171) ; 6 females, Sungei Buloh, 14 Oct.2005, Mal. 1, (25393, coll. PG, det. PG, Si1275) ; 1 male, 14 females, Sungei Buloh, 28 Oct.2005, Mal. 1, (25406, coll. PG, det. PG, Si1181) ; 3 males, 7 females, Sungei Buloh, 9 Nov.2005, Mal. 1, (25417, coll. PG, det. PG, Si1232) ; 2 females, Sungei Buloh, 18 Nov.2005, Mal. 1, (25425, coll. PG, det. PG, Si1278) .

1 male, Kranji mangrove, coll. D.H. Murphy, 16 Oct.1984 (on pin, ZRC, det. PG, quoted in Evenhuis & Grootaert as Paraclius sp. C ) ; 1 male, Mandai mangrove coll. D.H. Murphy, 7 Jun.1977 (moulded, on pin, ZRC, det. PG, quoted in Evenhuis & Grootaert as Paraclius sp. C ) .

Diagnosis. – Antenna with first flagellomere 1.5 times as long as wide. Mid and hind femora with row of 10 v (shorter than femur is wide). Cercus with a round ventral margin.

Description. – Male: Body length 4.6–5.2 mm, wing length 3.9–4.2 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 the posteroventral hairs) black. Antenna ( Fig. 27 ) dark yellow, with first flagellomere blackish brown. First flagellomere 1.5 times as long as wide, obtuse apically; arista black, minutely pubescent with very short basal segment. Proboscis black with black hairs, palpus black with black hairs and black apical bristle.

Thorax metallic green with pale grey pollen. 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 and hind coxae black with yellow apex. Hind femur with black apex. Mid tarsi from tip of tarsomere 1 onward blackish to 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 and hind femora with row of 10 v (shorter than femur is wide). Fore tibia with 3 ad, 3 pd and 1 pv, apically with 2 short bristles; mid tibia with 4 ad, 2 pd and 1 av, apically with 4 bristles; hind tibia with 4 ad, 4 pad and one row of v. Relative lengths of tibia and 5 tarsomeres LI 1.6: 0.65: 0.3: 0.25: 0.15: 0.15; LII 2.3: 1.0: 0.5: 0.5: 0.25:0.2; LIII 2.65: 0.7: 1.0: 0.75: 0.45: 0.25. Wing ( Fig. 26 ) hyaline, veins brown; R 4+5 and M distinctly convergent, CuAx ratio 0.7. Squama yellow with black hairs. Halter yellow.

Abdomen metallic green with pale grey pollen. Hairs and bristles black. Male genitalia ( Figs. 28–29 ): Epandrium longer than wide with hyaline apical process, lateral epandrial lobe rather short with 3 apical bristles; cercus black, with a round ventral margin; hypandrium thick with apical notch; aedeagus with distinct denticles.

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

Distribution. – Singapore.

Etymology. – The specific name refers to the serrate margin of the aedeagus.

Remarks. – Paraclius serratus is similar to P. singaporensis , new species, in having the first flagellomere rather short, but may be separated from the latter by the cercus having a round ventral margin and the aedeagus with denticles. In P. singaporensis , the cercus is nearly triangular in lateral view, and the aedeagus bears no denticles.

Figures

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