New species of Gymnochiromyia Hendel, 1933 (Diptera: Schizophora: Chyromyidae) from Southern Africa Author Ebejer, M. J. text African Invertebrates 2008 2008-06-30 49 1 77 77 http://www.bioone.org/doi/abs/10.5733/afin.049.0102 journal article 10.5733/afin.049.0102 2305-2562 7649425 Gymnochiromyia spinifera sp. n. Fig. 24 Etymology: From Latin spinifer (prickly); the name refers to the minute spine-like setulae on the prg . Diagnosis: An entirely yellow species with only the oc ringed with black, otherwise there are no good external distinguishing features. Description: Male . Head : Yellow; fr with margin moderately converging; at level of antenna 0.6 that at level of anterior oc ; oc triangle yellow but oc distinctly ringed with black; about 16 minute pale golden yellow setulae on fr ; eye oval lying oblique; gena in profile, below middle of eye, 0.9 height of eye; yellow and with pale setulae; ocp in profile barely visible behind eye, with short postocular setulae in one row; isolated lower post-genal seta long and pale; mouth parts small all yellow; 2 long setulae on oral margin at vibrissal angle; face poorly sclerotised and depressed; antenna all yellow, third segment a little larger than usual for genus and densely pubescent, second segment with brown dorsal seta, third aristal segment black, first two segments yellow; orb setae normal for genus, 1 vti and 1 vte , pvt distinct and crossed, oc long and divergent. Thorax : msn yellow and unstriped; pleura and mtn yellow, no darker spot at base of haltere. Chaetotaxy: 1 hu with shorter seta and fine setula adjacent, 1 psthu , 2 ntpl , 1 sa , 1 pa , 0+2 dc , acrs in 6 rows at level of transverse suture, prescutellar short; 1 mspl and 1 stpl , each with a few setulae in front. Wing: Hyaline, veins all pale yellow; distance between R and R 4+5 about 0.7 that between R 4+5 and M 1+2 at costa; distance between crossveins about 0.8 length of apical section of Cu. Haltere pale yellow. 2+3 Legs: All yellow and not modified except for very slightly thicker fore femur; fine yellow setulae scattered on all pairs of legs, in addition to somewhat longer setae on fore femur. Abdomen : tg entirely yellow; short setulose reaching about half length of tg on sides; st pale yellow. Postabdomen: ep small; broad basally, ph apd long, ej apd indistinct, surs long, broad at base and slightly dilated and rounded at apex, a little curved inwards, cerci small and finely setulose, prg oval and short spinose on ventral aspect; psg and bac scl not identified, ph asymmetrical more or less globular at apex. Female . Similar to male but without secondary sexual characters. Length : _ 1.5 mm , wing 1.5 mm ; ^1.8 mm , wing 1.7 mm . Variation: The distance between the crossveins may be a little less than that given for the holotype . Holotype : _ SOUTH AFRICA : Eastern Cape : 7 km N Steytlerville , Groot R., lucerne field, 30.x.1978 , R.M. Miller ( NMSA ). Paratypes : SOUTH AFRICA : Eastern Cape : 1 _ 1^same data and depository as holotype ; 1 _ same data ( NMC ) . NAMIBIA : Lüderitz District : 1 _ 1^Rooiberg , 27º38'S : 16º28'E , 22–24.ix.1997 , Malaise trap , A. Kirk-Spriggs & E. Marais ( NMNW ) .