The Campsicnemus lobatus and zigzag groups in the Society Islands, French Polynesia (Diptera: Dolichopodidae) Author Evenhuis, Neal L. text Zootaxa 2008 1910 27 44 journal article 10.5281/zenodo.184540 b02963f7-eec2-4501-a596-57938e514df1 1175-5326 184540 Campsicnemus lobatus Evenhuis , n. sp. ( Figs. 2 , 5 , 11 ) Diagnosis. Among species of the lobatus group, it is similar to C. rheocrenus but can be separated from it by the presence of a falcate wing tip (this shape not present in C. rheocrenus ) and by the thick band of infuscation along the distal wing margin (this band of infuscation, if present, very thin in C. rheocrenus ). Description . Body length: 6.5–7.0 mm. Wing length: 5.5–6.2 mm . Head . Male . Black, face black; oc and vt black, about one-half length of antennal arista; front, occiput, and vertex black with blue highlights; face constricted at middle, eyes holoptic; palp very small, dark brown; proboscis very small, brown, not extending below eye in lateral view; antennal segments brown; postpedicel subtriangular, length about equal to width; arista slightly longer than head height. Thorax : Mesoscutum, scutellum, and pleura dark brown to black throughout, with a few metallic greenish highlights laterally; thoracic setae black: 4 dc; 2 np; 2 ph; 1 pa; 1 + 1 sc; ac uniseriate; halter stem and knob white. Legs : CI yellowish white, CII and CIII brown; FI and FII yellowish white, FIII yellowish basally, dark brown on apical one-half; TiI and TiII all yellow; TiIII yellow only at extreme base, otherwise legs brown; femora without MSSC; TiII with 6–8 strong black setae basally, medially and apically on lateral and anterior surfaces, smaller stiff black setae and hairs along entire mesal surface (MSSC?); remainder of leg segments without MSSC. Wing ( Fig. 5 ): Pale smoky throughout; costal region straight, not bulging; cell r2+3 not infuscated; R2+3 and R4+5 parallel at wing margin, about as wide as distance between R4+5 and M1+2 at wing margin; vein M1+2 straight to swing margin; apex of wing falcate just below end of vein M1+2; thick spot of color at apex of wing extending posteriorly as thick band of infuscation along distal and posterior wing margin from end of M1+2 (MSSC); vein CuA1 with thick infuscation from crossvein dm-cu to wing margin (MSSC); crossvein dmcu perpendicular to radial veins; anal region with distinct lobe. Abdomen . Dark brown with short black hairs dorsally on each tergite, a few longer hairs laterally; tergal interstices whitish; sternites yellowish brown. Hypopygium brown with paler brown cerci, not dissected. Female . As in male except for lack of MSSC; eyes dichoptic, face bulging slightly in lateral view; legs normal, without modifications. Types . Holotype ɗ (BPBM 16,647) [BPBM1013220] and 19ɗ [BPBM1013221], 30Ψ [BPBM1013222] paratypes from FRENCH POLYNESIA : Society Is : Moorea: Tohiea Trail, tributary to Putoa Riv., above captage, ~ 150 m , 18 Mar 2007 , sweeping wet rocks on side of stream, R.A. Englund. Other paratypes : FRENCH POLYNESIA : Society Is : Moorea: 2ɗ [EMEC1013026], 6Ψ [EMEC1013027], 3 coconuts trail, 350 m , 17°32'58"S , 149°50'06"W , sweeping wet seeps adjacent to cascade at stream, 10 Jul 2006 , P. O’Grady; 2ɗ [BPBM1013223], 3Ψ [BPBM1013224], Vaioro Rivière waterfall above Afareaitu, sweeping seeps at small cascade and 30-foot waterfall near head of valley and main 150-foot waterfall, 11 Jul 2006 , N. Evenhuis, P. O’Grady (see Fig. 11 ). Holotype in BPBM. Paratypes in BPBM, and EMEC. Etymology . The specific epithet derives from the Latin lobus = “elongated projection”; referring to the characteristic small lobe-like or falcate apex of the wing.