An extraordinary new genus and three new species of Acostemmini (Hemiptera: Cicadellidae: Deltocephalinae) from Madagascar with comments on the morphology and classification of the tribe Author Zahniser, J. N. Illinois Natural History Survey Prairie Research Institute University of Illinois at Urbana / Champaign 1816 S. Oak St. Champaign, IL 61820 USA. E-mail: zahniser @ illinois. edu zahniser@illinois.edu Author Nielson, M. W. Affiliate Faculty, Monte L. Bean Museum Brigham Young University Provo, UT 84602 USA. E-mail: mwnielz @ gmail. com Corresponding author. E-mail: zahniser @ illinois. edu text Zootaxa 2012 2012-02-28 3209 1 28 52 https://biotaxa.org/Zootaxa/article/view/zootaxa.3209.1.2 journal article 10.11646/zootaxa.3209.1.2 1175-5326 5248266 Alocoelidia fulva Evans 1954 a: 109 ( Figs. 14–20 ) Description. Length of female holotype 6.0 mm, male 5.9 mm. General color dull yellowish-orange tinged with brown; with 2 large yellow spots, larger anterior spot occupying base of clavus and mesonotum, smaller posterior spot occupying apical half of clavus except extreme apex (Figs. 14,15). Head. Face mostly yellowish, with brown along some sutures. Wings. Forewing vein A1 straight, directed toward apex of clavus; vein A2 curved to commissural margin ( Fig. 15 ). Female. Sternite VII about twice as wide as long; slightly produced posteriorly; with small apical notch. Ovipositor darkly colored, protruding somewhat beyond pygofer apex. Pygofer darkly colored on dorsal half, yellow ventrally; with one row of ~8 macrosetae near ventral margin. First valvula sigmoidally shaped, pointed somewhat ventrally toward apex; dorsal sculpturing pattern strigate basally, strigate to concatenate apically, reaching dorsal margin. First valvifers fused anteriorly. Second valvula teeth large, trapezoidally shaped, without serrations, extending for 3/4 length of valvula. Third valvula with one row of 4–5 macrosetae ventroapically. Male. Pygofer relatively quadrate; not incised dorsally; each side with posterodorsal lobate process; ventral margin broadly sinuate (Figs. 16,19). Valve completely fused to subgenital plates; not fused to pygofer ( Fig. 17 ). Subgenital plates separate for part of their length; fused basally and with valve; rounded apically; sinuate laterally ( Fig. 17 ).Style preapical lobe large, acutely angled; apophysis thick, recurved, pointed apically, texture denticulate ( Fig. 18 ). Aedeagus with socle large; base tall and broad; aedeagal shaft divided near base, forming two shafts; gonopores large, subapical on posteromedial surface of shafts; each shaft with a medial tooth, subapical tooth, and long pointed apex (Figs. 20,21). Segment X ventrally with a well-sclerotized trough-like plate extending posteriorly beyond dorsal part (Figs. 16,19). Distribution. Madagascar . Material examined. Holotype ♀ ( MNHN ). Madagascar , Diego-Suarez , Ch. Alluaud , 1893/ Museum Paris , Madagasar , Diego Suarez , Ch. Alluaud 1893/ Museum Paris , MNHN 2537 / Type / Alocoelidia fulva Evans , det. 1952. 1 ♂ ( CAS ) First label: CASENT 3003333; Second label: MADAGASCAR : Pianar.,/ Ranmafana National Park ,/ Talatakely light trap / 21°15.50’S , 47°25.46’E / 7 April 1998 , 900 m elev.; Third label: C.F. Griswald , D.H./ Kavanaugh, N.D . Penny/ M.J. Raherilalan , J.S./ Ranorianarisoa , Jere / Schweikert , & D. Ubick. Remarks. The male specimen (CAS) is parasitized by a female strepsipteran ( Halictophagidae ) whose abdomen is full of larval strepsipterans. The leafhopper abdomen also contains numerous (>200) larvae. Several larvae are preserved along with the embedded female in the leafhopper abdomen. Despite the existence of the parasite, the leafhopper genitalia appeared to be fully formed. The male was associated with the female type by the shared distinctive color pattern, namely the broad transverse yellow stripe across the mesonotum and base of forewings, followed posteriorly with brown coloration, then with a yellow portion of the clavus, and the clavus terminating with a dark brown spot.