Renda longiceps, Márquez, 2010

Márquez, Juan, 2010, Revision of the genus Renda Blackwelder, 1952 (Coleoptera: Staphylinidae: Xantholinini) 2686, Zootaxa 2686 (1), pp. 1-61 : 38-39

publication ID 10.11646/zootaxa.2686.1.1

persistent identifier

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scientific name

Renda longiceps

sp. nov.

Renda longiceps sp. nov.

Type material (2 specimens). Holotype, male: “ BRAZIL, Goias: Jataí , Nov. 1972. F. M. Oliveira ” ( AMNH) . Paratype, female: “ ECUADOR: Sucumbios, Sacha Lodge , 0°S, 76.5°W, 270 m, 22.II–4.III 1994, Hibbs, ex: malaise” ( SEMC) GoogleMaps .

Description. Total length 12.0– 14.1 mm. Body black, shining with antennomeres 4–11, mouthparts, legs and last two visible abdominal segments reddish brown.

Head. Ovally elongate (similar to Figs. 12, 17), 1.37x as long as wide; dorsal surface convex, ventral surface slightly convex; umbilicate punctures very dense dorsally and ventrally separated by twice or less their width ( Fig. 24); temple convex ( Fig. 27); eyes 0.25x as long as head, interocular distance 0.7x cephalic width; first antennomere 1.89x length of antennomeres 2–3 combined, apical antennomere as long as antennomeres 9–10 combined; labrum slightly bilobed ( Fig. 54); with mandibular external channel; apical maxillary palpomere conical ( Fig. 40), 1.28x as long as preapical palpomere; apical labial palpomere asymmetrically conical ( Fig. 45).

Thorax. Pronotum elongate (1.72x as long as wide); as wide as head; with dense and fine punctures, except for a wide longitudinal impunctate area ( Fig. 52); with depressed area at each side of posterior third. Elytra as long as pronotum, with fine setae as dense as those on other parts of body. Prosternum with setae as dense as those on meso and metasternum.

Abdomen. Covered with fine setae as dense as those on rest of body.

Aedeagus. Very elongate and narrow; total length 2.1 mm; parameres 0.24x as long as length of median lobe; apical area of median lobe 0.14x total length of median lobe; internal sac with weakly sclerotized structures ( Fig. 80).

Variation. The male specimen is larger than the female specimen and its last visible abdominal segment is yellow; all antennomeres of the female are reddish brown.

Comparison. Due to the ovally elongate head, conical apical maxillary palpomere and the head with temple convex, this species can be confused with R. nitida . However, R. longiceps can be distinguished by the very dense umbilicate punctures on the ventral surface of the head, apical antennomere as long as antennomeres 9–10 combined, elongate pronotum and narrow aedeagus with the short apical area of the median lobe.

Etymology. The species name is derived from the Latin word “longus”, and refers to the elongate body, especially the elongate pronotum of this species.

Geographic distribution. Brazil and Ecuador.


American Museum of Natural History


University of Kansas - Biodiversity Institute