Revision of Afrotropical Pachycerina Macquart (Diptera: Lauxaniidae) Author Davies, Gregory B. P. Author Miller, Raymond M. text African Invertebrates 2009 2009-12-31 50 2 295 295 http://www.bioone.org/doi/abs/10.5733/afin.050.0207 journal article 10.5733/afin.050.0207 2305-2562 7910522 Pachycerina pellocera sp. n. Figs 18 , 33 , 43 Etymology: From the Greek pellos (dusky or dark-coloured) and keras (horn), in reference to the infuscated postpedicel. Diagnosis: The darkened postpedicel and absence of T6 spots despite the yellow-brown abdomen are distinctive. Front legs are not as dark as in other Malagasy Pachycerina species. The male S5 is also distinctive with a long medial spur. Aristal setulae are less dense than in other Afrotropical species. Description: Head : Fronto-orbital plates not darkened. Ocellar spot large and black. Prefrontal spots large and black, touching sides of prefrons. Scape, pedicel and especially postpedicel deeply infuscated. Aristal plumosity rather sparse. Thorax : Scutum striping patterning diffuse, notum largely brown-orange, except for yellow anterior of scutum and also postalar bristles and transverse suture. Scutellum yellow-orange. Upper lateral vitta present. Entire sternopleuron infuscated dark brown by expanded lower lateral vitta; meropleuron largely dark brown. Profemur orange-yellow, slightly darker protibia (with yellow rings proximally and distally). Protarsus orange-brown, somewhat darker distally. Other legs yellow-orange. Wing faintly infuscated, especially stigma and costal and marginal cells. Haltere yellow-orange. Abdomen : Yellow (may be discoloured to blackish in some specimens). Male terminalia ( Figs 18 , 33 , 43 ): S5 with short posterior processes and large, extended medial spur exceeding posterior processes in length. T6 spots absent. Surstyli about as long as epandrium. Gonopods asymmetric, right gonopod longer than left gonopod. Right gonopod narrow and sinuous. Both gonopods with small lateral spinules. Measurements : ơ (n=1), ^(n=3): head length – ơ 0.7, ^0.7; thorax length (incl. scutellum) – ơ 1.8, ^1.8; abdomen length – ơ 1.8, ^1.8; wing length – ơ 3.9, ^4.1. Holotype : ơ MADAGASCAR : Anjavidilava [ 22°09'S : 46°57'E ], Andringitra Massif, 17–21.i.1958 , B.R. Stuckenberg ( NMSA ). Other material examined : MADAGASCAR : 1ơ 5^same data as holotype ( NMSA ) .