Renda simplicephala, Márquez, 2010

Márquez, Juan, 2010, Revision of the genus Renda Blackwelder, 1952 (Coleoptera: Staphylinidae: Xantholinini) 2686, Zootaxa 2686 (1), pp. 1-61 : 35-36

publication ID	https://doi.org/ 10.11646/zootaxa.2686.1.1
persistent identifier	https://treatment.plazi.org/id/237A597D-FF8F-FFF6-7482-C3DBFA25A87D
treatment provided by	Felipe
scientific name	Renda simplicephala
status	sp. nov.

Treatment

Renda simplicephala View in CoL sp. nov.

Type material (2 specimens). Holotype, male: “ ECUADOR: Napo Reg., Tiputini Res. Stat., 220 m, 5–25-IX- 00, 0°38´S, 76°9´W / Flight intercept trap, D. J. Inwars & K. A. Jackson, BMNH (E) 2000-194” ( BMNH) GoogleMaps . Paratype, female: “ Napo, Archidona, Nanchiyacu , 5-XII-1986, X. Viters ” ( QCAZ) .

Description. Total length 16.2–16.8 mm. Body metallic green, pronotum nearly metallic blue, elytra darker, antennomeres 4–11, mouthparts, tarsi and genital segment reddish brown, apex of last antennomere yellow.

Head. Oval, posteriorly narrowed (posterior corners absent; similar to Fig. 14 View FIGURES 11–19 ), 1.34x as long as wide; dorsal and ventral surfaces moderately convex; with dense umbilicate punctures on dorsal surface; ventral surface with slightly dense and unevenly distributed umbilicate punctures ( Fig. 22 View FIGURES 20–24 ); temple without temporal carinae but delineate flattened area with some punctures ( Fig. 28 View FIGURES 25–34 ); eyes 0.27x as long as head, interocular distance 0.61x cephalic width; first antennomere 1.84x as long as antennomeres 2–3 combined, apical antennomere 1.1x as long as antennomeres 9–10 combined; labrum with 4 teeth, lateral pair longer than central pair ( Fig. 55 View FIGURES 53–61 ); mandibular external channel poorly developed; apical maxillary palpomere elongate ( Fig. 38 View FIGURES 35–46 ), 1.71x as long as preapical palpomere; apical labial palpomere moderately widened and flattened apically ( Fig. 44 View FIGURES 35–46 ), near twice as long as preapical palpomere.

Thorax. Pronotum 1.56x as long as wide; almost as wide as head (0.98x); with fine and slightly dense punctures, except for wide longitudinal impunctate area; without depressed areas on posterior third (similar to Fig. 52 View FIGURES 47–52 ). Elytra 1.13x as long as pronotum; elytra denuded, setal characters therefore impossible to observe, fascia probably present in undamaged specimens. Prosternum transverse, with slightly dense, fine setae as on meso and metasternum.

Abdomen. Specimens damaged, without setae on abdomen. In undamaged specimens abdomen probably densely covered with pale, long setae.

Aedeagus. Elongate; total length 1.825 mm; parameres 0.48x length of median lobe, apex of median lobe 0.36x its total length, internal sac with moderately visible sclerotized structures ( Fig. 76 View FIGURES 62–77 ).

Variation. Specimens vary in total length and from metallic green to blue in color.

Comparison. This species is distinguished from the rest species of this group by the oval and posteriorly narrowed head, the absence of temporal carinae on the temple of the head, the convex dorsal surface of the head, the few umbilicate punctures on the ventral surface of the head and the small aedeagus.

Etymology. The species name is derived from the Latin words “simplex” and “cephalus” and refers to the simple head, without temporal carinae or concave area on the temple of the head.

Geographic distribution. Ecuador.

2´. Species with mainly black body; apical antennomere as long as, or shorter than antennomeres 9–10 combined; labrum slightly bilobed ( Fig. 54 View FIGURES 53–61 ); without fascia on elytra ( Figs. 6 View FIGURES 1–6 , 7 View FIGURES 7–10 ) ........................................................................ 3

3. Species with apical maxillary palpomere conical ( Fig. 40 View FIGURES 35–46 ) ....................................................... ‘‘minor” species group