Campsicnemus craigi Evenhuis

Evenhuis, Neal L., 2013, The Campsicnemus popeye species group (Diptera: Dolichopodidae) from French Polynesia, Zootaxa 3694 (3), pp. 271-279 : 273-274

Campsicnemus craigi Evenhuis , sp. nov.

( Fig. 1 )

Diagnosis. Within the popeye group it is closest in appearance to C. meyeri by virtue of the short antennal postpedicel (as long as wide or shorter) and the slightly bowed and setate fore basitarsus. It can be separate from C. meyeri by the characteristically long hairs of the mid basitarsus, the longer antennal postpedicel, and the moderately long stiff hairs of the mid femur (much shorter in C. meyeri ).

Description. Male. Body length: 2.4–2.6 mm. Wing length: 2.8–3.0 mm. Head: Black, dark brown near clypeus; oc and vt black, about one-half length of antennal arista; face constricted at middle, eyes holoptic, contiguous below antennae for length of 3–4 ommatidia; palpus small, brown; proboscis brown, extending below eye in lateral view; antennal segments black to brown; postpedicel long, subtriangular, length subequal to width; arista slightly longer than head height. Thorax: Dorsum of mesoscutum, scutellum, and mediotergite dark brown, paler brown laterally; pleura yellowish except for brown laterotergite and anepimeron; thoracic setae black: 1 + 3 dc; 2 np; 2 ph; 1 pa; 1 + 1 sc; ac absent; halter stem and knob white. Legs: CI yellowish, with three black setae on apical one-third; CII and CIII brown; FI and FII yellowish, FIII yellowish brown basally, becoming darker brown on dorsoapical one-half; remainder of legs brown; foreleg unmodified, without MSSC; FII with stiff setae ventrally, row of 3–4 longer black setae on ventroapical one-third, oriented anteriorly; TiII ( Fig. 1 a) flared, wider apically than basally, with row of 6 long setae on mesobasal one-third (MSSC), row of strong setae on basal half on lateral surface, with longest of those just beyond middle; small patch of 4 small acute thorn-like setae mesally at middle; ring of 5–6 strong spiky setae apically (MSSC). IIt1 ( Fig. 1 b) slightly bowed, short, about 1.5 times length of IIt2, with row of conspicuously long curved hairs mesally (MSSC); IIt2–4 with mesal hairs shorter than on IIt1 but erect, curved and conspicuous. Remainder of leg segments without MSSC. Wing: pale smoky throughout. Abdomen: Dark brown with short black hairs dorsally on each tergite, a few longer hairs laterally on tergite I; sternites brown. Hypopygium brown, not dissected; fb absent. Female. As in male except for lack of MSSC; antennal postpedicel length about 0.75 times width.

Types. HOLOTYPE ♂ (BPBM Type 16,648) [BPBM1013175] and 1 ♂ [BPBM1013176] and 6 ♀ [BPBM1013177] PARATYPES from FRENCH POLYNESIA: Society Is: TAHITI NUI: Mt. Mauru, Faatautia, near stream and hydro-electric structure, 720 m, 17°37'39"S, 149°31'26"W, 19.vii.2006, sweeping seeps and wet rocks, N. Evenhuis, P. O’Grady. OTHER PARATYPES: FRENCH POLYNESIA: Society Is: TAHITI NUI: 1 ♂ [BPBM1013178], Mt. Mauru, Faatautia, 730 m, 17°37'45"S, 149°21'10"W, riparian habitat above and below lava tube, 19.vii.2006, N. Evenhuis, P. O’Grady. 1 ♂, Mt. Mauru, stream, in lava tube and nearby tributary, 740 m, 17°37'45"S, 149°21'11"W, 5.ix.2006, D.A. Polhemus. Holotype and paratypes in BPBM.

Etymology. Named for Dr. Douglas Craig, in recognition of seminal work he has done on French Polynesian dipterology (especially with Simuliidae ) and its geological and biogeographical history.

Figures

FIGURES 1 – 2. Campsicnemus male mid legs. 1. C. craigi Evenhuis, sp. nov.; a. femur and tibia, left leg, mesal view; b. tibia and two basalmost tarsi, left leg, lateral view. 2. C. elinae Evenhuis, sp. nov., femur and tibia, left leg, mesal view. Abbreviations: IIt 1 = midleg basitarsus; TiII = midleg tibia. Scale bars = 0.1 mm.