Chelipoda oblinita Collin, 1928

Published, First, 2007, The Hemerodromiinae (Diptera: Empididae) of New Zealand II. Chelipoda Macquart, Zootaxa 1537 (1), pp. 1-88 : 45-46

28. Chelipoda oblinita Collin

[ Fig. 50 ]

Chelipoda oblinita Collin, 1928: 41 .

Type material. Collin (1928) described Chelipoda oblinita from a single female from Ohakune, iii.1923, TRH [ BMNH]. Ohakune is in: New Zealand, North Island, RI. This female is here designated lectotype .

Another teneral female, same data as lectotype but 15.xii.1922 – 15.i.1923 [ BMNH], was thought by Collin to be this species but was excluded from his description and is ignored in the present work .

Additional material: South Is. , 13♂, 3♀, KA , Kaikoura , clear window traps in canopy of Matai , Totara, Rimu and Nothofagus, 1990 –1991, RKD [ NMWC & NZAC]; 1♀, NN , Canaan , Harwoods Hole 762m, 1/ii/ 1978, AKW [ NZAC] .

Description. Male: length 3–4mm (wet material).

Head: black, dusted grey; dorsoventrally flattened, 1.5X as long as deep; frons short, about as long as distance between hind ocelli; eyes touching for short distance below antennae; ocl strong, blackish, diverging; 2 pairs of vertical setae, outer pair (vt2) congruent with upper end of series of small fine upo; lpo diverging strongly from eye margin and merging with dense patch of longish white pile occupying entire lower occiput. Antenna yellowish brown, basal segments yellowish or whitish; scape elongate, 2X as long as wide, ped with a dorsal and a lateral strong fine curving setae reaching beyond end of postpedicel which is pointed ovate, 1.5–2.0X as long as wide; arista thickened and curved, 4–5X as long as postpedicel, densely long pilose especially dorsally where hairs as long as third segment is wide. Mouthparts yellowish brown, palpi narrow with fine pale hairs.

Thorax: ground colour yellowish brown, in some lights rather darker on mesonotum and pleura dorsally, scutellum and metathorax; dusted grey with faint indications of stripe on mesonotum laterally in some views. Mesonotum slightly produced anteriorly; all setae black, dc2, unp and sa equally strong, dc1 smaller, dc3 absent, dc4, dc5 and 1 or 2 ph very small and fine.

Legs: yellowish, C 1 brownish anteriorly, tarsi dusky; C 1 0.8X as long as thorax, distinctly quadrate basally, a line of very fine hairs anteriorly and a very strong yellowish basal bristle; C 2 and C 3 with fan of fine anteroapical bristles. F 1 as long as C 1, widest 0.1 from base, evenly narrowing distally; 2–3 strong black av bristles basally in line with series of 15–17 short blunt av spines; 3–5 strong basal pv bristles but pv ciliation otherwise only inconspicuous hairs becoming more bristle-like 0.7 from base. T 1 0.9X length of F 1, almost linear, not strongly geniculate basally, a linear series of about 27 minute adpressed denticles ventrally with a row of erect hairs behind; at2 0.3X at3; at3 with short outstanding bristles dorsally; pt1 longer than pt2 + pt3 + pt4 + pt5.

Wing: with simple venation, veins brownish; Sc strong, ending abruptly before costa; vein A 1 almost completely absent (no trace even about end of CuA 2 which is strong and evenly curved but not recurrent); costal ciliation basal to junction of C and R 1 strong, consisting of ad and av setae as long as postpedicel, a distinct costal bristle

Abdomen: pale brownish, darker on basal tergites; tergites with sparse but longish fine setae on disc and posterior margins, longest on tergites 1 and 2. Terminalia ( Fig. 50 ) brownish, very small and reflexed upwards; hypandrium separated from and partly overlapped by epandrium; epandrial lobes narrowly oblong in lateral view, narrow in posterior view, somewhat hooked apically and with narrow ovate inner lobe basally; hypandrium with 2 very strong apical yellow setae extending either side of phallus; postgonite apically pointed; subepandrial process tightly spirally rotated apically; cerci narrow, free, bearing long hairs apically and on inner face; phallus rather broad, reflexed anteriorly near base and posteriorly near tip.

Description. Female: similar to male but setae on pedicel rather shorter and straighter; arista only slightly thickened, minutely pilose and lacking long hairs.

C 1 with fine hairs anteriorly and no basal bristle. F 1 with about 4 strong basal av spines and only 9–12 short blunt av spines; pv ciliation less conspicuous. Tarsi with at2 0.5X at3; at3 with stronger outstanding bristles dorsally. Costal ciliation of wing not unusually long. Abdomen pale brownish, terminal papillae darker, narrow with longish hairs.

Comments. C. oblinita is a medium sized brownish species with head strongly dorsoventrally compressed and scape elongated. Males have a strong basal bristle on C 1, a strong costal ciliation on the wing, a very long bristle on the pedicel and the arista is densely pilose. The species is currently known from one North Island and two South Island localities from December to March inclusive.

Figures

FIGURES 49–55. Male genitalia of Chelipoda spp. 49. C. oblata Collin, posterior view. 50. C. oblinita Collin, posterior view. 51–53. C. otiraensis (Miller). 51. posterior view. 52. anterior view. 53. apex of postgonite. 54. C. puhihiroa sp. n. apex of postgonite. 55. C. rangopango sp. n. posterior view,