Chelipoda tangerina, Published, 2007

Published, First, 2007, The Hemerodromiinae (Diptera: Empididae) of New Zealand II. Chelipoda Macquart, Zootaxa 1537 (1), pp. 1-88 : 51-52

publication ID

https://doi.org/ 10.11646/zootaxa.1537.1.1

DOI

https://doi.org/10.5281/zenodo.5088979

persistent identifier

https://treatment.plazi.org/id/6A078784-BA56-FF8E-AFFE-FD081805F068

treatment provided by

Felipe

scientific name

Chelipoda tangerina
status

sp. nov.

33. Chelipoda tangerina View in CoL sp. n.

[ Figs. 67 View FIGURES 63–70 , 114 View FIGURES 104–116 , 122 View FIGURES 117–123 ]

Type material. Holotype ♂: New Zealand, South Is. , FD, Darren Mts. , South Gully, Tutoko Bench, 945– 1219m?/ i/1977, JSD [ NZAC] . Paratypes: 8♂, 3♀ same data as holotype, various dates in January 1977 ; 1♂, 3♀, OL, Rees Saddle , 1450–1800m, 14/ii/1980, JCW [ NZAC] ; 2♀, OL, Dart Valley , 940m, JCW [ NZAC] ; 1♀, OL, peak 2.4 km W of Mt Tyndall , 16/ii/1980, JSD [ NZAC] ; 1♀, MC Arthurs Pass, Klondike Corner, 8/ii/ 1982, CFB [ NZAC] ; 1♂, FD , Barland Saddle, Fiordland NP, 1010m 2/ii/1982, JWE [ LUNZ] .

Etymology: a reference to the tangerine colour of the thorax and antennae.

Description. Male: length = 2.0mm.

Head: subspherical, black, front of frons orange, vertex and occiput dusted grey, face strongly golden dusted. Bristles yellowish to blackish; ocl and verticals similarly strong, Only one vertical (vt1) distinguishable, the outer vertical (vt2) being congruent with upo; no pile on lower occiput. Antennae ( Fig. 114 View FIGURES 104–116 ) bright orange, arista black; basal segments as long as wide; postpedicel short pointed ovate, almost triangular, barely longer than wide, thinly pilose; arista bare, 3X as long as postpedicel. Proboscis black, palpi rather broad, brownish yellow with 3–4 short dark apical setae.

Thorax: orange, uniformly pale dusted; a small blackish patch on katepisternum immediately posterior of front coxae; sct black, other setae orange or blackish orange; dc5 present and strong; dc1 apparently vestigial; dc2, dc3, pprn, ph, unp, lnp and sa well developed.

Legs: yellow, front trochanter posteriorly and apical two tarsal segments black. C 1 basally with slightly darker stripe in front. C 1 0.8–0.9X as long as thorax, 4.5X as long as deep, bearing small dark bristly hairs anteriorly and a small anteroapical ‘wart’. Front trochanter with a very long yellowish bristle on outer face. F 1 ( Fig. 122 View FIGURES 117–123 ) 1.1–1.2X as long as C 1, strongly inflated, 3.2X as long as wide, almost trapezoid, posterior face rather flattened, a pv series of short bent hairs on basal 0.5, becoming smaller and displaced posteriorly near base but merging with stronger but still small curving spine-like bristles on apical 0.5 amongst which are 3 much stronger bristles 0.6–0.7 from base; a line of fine av hairs on basal 0.5 discontinuous with series of 12– 13 small black denticle-like bristles on distal 0.5; a patch of posteriorly directed long fine apically curved yellow hairs dorsally and posterodorsally on basal 0.3. T 1 short, 0.6X length of F 1, abruptly curved in distal 0.3, a series of minute adpressed denticles ventrally on basal 0.5 with a short strong black hooked spine immediately beyond. Basal tarsal segments of front leg spinose ventrally; at2 0.6–0.7X as long as at3. Legs otherwise without modified structure or chaetotaxy but tarsi with dorsoapical bristles rather strong, particularly on posterior legs.

Wing: veins brown, yellowish basally; membrane yellowish basally, a strong greyish black patch anteroapically extending from before apex of R 2+3 to tip of M 2; cell dm rather broad; cell cup closed, vein A 1 strong, continuing strongly for a short distance after junction with CuA 2; costa bearing fine erect hairs (perpendicular to plain of wing) before junction with R 2+3.

Abdomen: deep black, lightly dusted greyish. Terminalia ( Fig. 67 View FIGURES 63–70 ) black; hypandrium large, almost globular but rather elongate with a pair of broad apical hypandrial processes curving strongly anteriorly, a ‘window’ of weakly sclerotized tissue apicoventrally; epandrium fairly broad, slightly overlapping hypandrium below; subepandrial process curved, narrow, strongly sclerotized; cercus apparently free, not fused with epandrium, at least apically; phallus strongly recurved anteriorly on basal section then curving posteriorly with tip upturned and emerging beyond tip of hypandrial processes.

Description. Female: Differing from the male as follows.

Head: antenna duller orange, postpedicel black dorsally.

Thorax: duller orange, pleura tending to be faintly darkened; dc1 not vestigial, 0.3X as long as dc2.

Legs: no anteroapical ‘wart’ on C 1. No long seta on outer face of front trochanter. F 1 not trapezoid, strongly and evenly inflated below, widest 0.3–0.4 from base, a linear series of short black pv spines interspersed with stronger bristles, particularly on basal 0.5; av series of 13–14 black denticles contiguous with 2– 3 strong basal spines. T 1 0.7X as long as F 1, slightly and evenly curved, no ventral hooked spine. Tarsi less strongly bristled, at3 subequal to at2.

Wing: veins yellowish brown; membrane strongly tinged yellow; no dark anteroapical mark.

Abdomen: terminal papillae black with dark hairs.

Comments. C. tangerina has a distinctive bright orange thorax and antennae, contrasting with the black abdomen. It is only doubtfully placed in the C. trepida -group. C. tangerina is only known from alpine regions of New Zealand’s South Island in herb field and tussock grasslands between 940m and 1800m in January and February.

NZAC

New Zealand Arthropod Collection

MC

Museo de Cipolleti

CFB

Northern Forestry Centre, Canadian Forest Service

LUNZ

Lincoln University Entomology Research Museum

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Diptera

Family

Empididae

Genus

Chelipoda

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