Renda cariniventris, Márquez, 2010

Márquez, Juan, 2010, Revision of the genus Renda Blackwelder, 1952 (Coleoptera: Staphylinidae: Xantholinini) 2686, Zootaxa 2686 (1), pp. 1-61: 46-47

publication ID 10.11646/zootaxa.2686.1.1

persistent identifier

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scientific name

Renda cariniventris

sp. nov.

Renda cariniventris   sp. nov.

Type material (5 specimens). Holotype, male: “ FRENCH GUIANA, Roura , 18.4 km SSE, 240 m, 4°36´38”N, 52°13´25”W, 25–29 May 1997; J. Ashe, R. Brooks, FG1AB97 081, ex: flight intercept trap ” ( SEMC) GoogleMaps   . Paratypes: “ BRAZIL: Am. Reserva Ducke, 26 km NE Manaus, Barbosa , M. 6.V. / Plot B FIT 1 Feb. 1995 / 27.5” (1♀, BMNH)   . Same data as holotype (1♂, SEMC) GoogleMaps   . Same data, except: “ 39.4 km SSE, 270 m, 4°32´43”N, 52°8´26”W, 29 May – 10 Jun 1997; # 172” (1♂, SEMC) GoogleMaps   . “ French Guiana: Saül , 7 km N, 3 km NW, Les Eaux Claires, Mt. La fumée, 3°39´46”N, 53°13´19”W, 490 m, 1–8 Jun 1997; J. Ashe, R. Brooks, FG1AB97 162, ex: flight intercept trap ” (1♂, SEMC) GoogleMaps   .

Description. Total length 14.5–16.2 mm. Body black, with antennomeres 4–11, labrum, palpi, tarsi and genital segment red.

Head. Oval, slightly widened posteriorly (similar to Fig. 13); 1.26x as long as wide; dorsally and ventrally convex; dorsal surface with very dense, umbilicate punctures, ventral surface with dense, umbilicate punctures separated by less than twice their width ( Fig. 24); temple with superior and inferior temporal carinae and a concave area ( Fig. 34); eyes 0.3x as long as head, interocular distance 0.62x cephalic width; first antennomere 1.83x as long as antennomeres 2–3 combined, apical antennomere 0.93x as long as antennomeres 9–10 combined; labrum slightly bilobed ( Fig. 54); with mandibular external channel; apical maxillary palpomere elongate ( Fig. 38), 2.15x as long as preapical palpomere; apical labial palpomere slightly widened at apex ( Fig. 44), almost twice as long as preapical palpomere.

Thorax. Pronotum 1.5x as long as wide; 1.03x cephalic width; with dense, fine punctures, except for wide longitudinal impunctate area ( Fig. 52); with poorly developed depressed area at each side of posterior third. Elytra as long as pronotum; with fine setae as dense as those on head and pronotum. Anterior half of prosternum with a poorly developed longitudinal carina; with fine setae as dense as those on meso and metasternum.

Abdomen. Covered with setae as dense as those on remaining body.

Aedeagus. Ovally elongate; total length 1.72 mm; parameres 0.42x as long as median lobe; apical area of median lobe 0.23x total length of median lobe; internal sac with weakly sclerotized structures ( Fig. 86).

Variation. Coloration in specimens can vary as follows: legs (except tarsi) almost black to reddish brown; antennomeres 1–3 black to reddish brown; apex of last antennomere red or yellow. The umbilicate punctures on the ventral surface of the head vary from dense to very dense. The carinate line on the prosternum can be slightly to moderately developed. Female specimens studied have wider pronotal punctures than males.

Comparison. This species is similar to R. brendelli   , R. clavicornis   and R. pronotalis   in the finely punctuated pronotum, mainly black body and the elongate apical maxillary palpomere. Renda cariniventris   is distinguished from R. brendelli   by the superior and inferior temporal carinae that delimit the concave area. It can be distinguished from R. pronotalis   by the oval shape of the head and the carinate prosternum ( R. pronotalis   has an ovally quadrate head and no carinate line on the prosternum). It can be separated from R. clavicornis   by the slightly, posteriorly narrowed head with clearly convex dorsal and ventral surfaces, apical antennomere shorter than antennomeres 9 and 10 combined and by the shorter aedeagus with long parameres and internal sac with weakly sclerotized structures.

Etymology. The species name is derived from the Latin words “carinae” and “ventris” and refers to the longitudinal, fine carina on the anterior half of the prosternum.

Geographic distribution. Brazil and French Guiana.


University of Kansas - Biodiversity Institute