Distenia (Distenia) normae, Botero & Almeida, 2019

Botero, Juan Pablo & Almeida, Lúcia M., 2019, New species and new geographical records in Disteniidae (Coleoptera, Chrysomeloidea) with revised keys to species of Novantinoe and American species of Distenia (Distenia), Zootaxa 4590 (1), pp. 40-58 : 40-58

Distenia (Distenia) normae sp. nov.

( Figures 17–20 )

urn:lsid:zoobank.org:act:EAC99A35-F2E1-41DA-A5F5-2CB216C07887

Description. Male. Body with metallic reflections; head dorsally and pronotum dark brown with green reflections; body ventrally, antennae, tibiae and apical 3/4 of femora dark brown, ventrites lighter; basal fourth of femora yellow; elytra bicolorous, anterior half orange and posterior half light brown with violaceous reflections.

Head. Glabrous, smooth with a few shallow punctures. Genae short, apex truncate; upper eye lobes wellseparated, distance between them 2.0 times width of one upper lobe. Antennae reaching elytral apex at antennomere VII; antennomeres finely punctate, with short and moderately dense yellowish setae; inner face of antennomeres III–X with long, dense black setae (antennomere XI missing); scape curved at base, progressively dilated to apex, without granules ventrally. Antennal formula (ratio) based on length of antennomere III: scape = 1.30; pedicel = 0.13; IV = 1.17; V = 1.30; VI = 1.17; VII = 1.09; VIII = 1.09; IX = 0.87; X = 0.78.

Thorax. Prothorax 1.12 times wider than long (including lateral tubercles); with anterior and posterior constriction; laterally with tubercles, wide at base, rhombus at apex. Pronotum with five gibbosities, two longitudinally subfused and feebly elevated on each side, another centrally at posterior third, rounded at apex, slightly more elevated than lateral ones; surface smooth, with transverse row of punctures at anterior and posterior constrictions, and some sparse and shallow punctures around central gibbosity. Prosternum with transverse sulcus, glabrous, smooth; prosternal process slightly narrowed to apex; apex rounded, width at narrowest point equal to 1/ 6 of procoxal cavity width. Scutellum glabrous, curved at posterior margin. Elytra subparallel-side, at apex suddenly narrowed, about 5 times as long as prothorax; with coarse and dense punctures, not arranged in rows, sparser at humeri; apex obliquely truncate, with sinuous margin. Femora sublinear, more linear toward metafemora; apex of femora unarmed.

Abdomen. Ventrites smooth; apex of ventrite V rounded.

Dimensions (mm). Holotype male. Total length, 7.6; prothoracic length, 1.1; basal prothoracic width, 1.1; distal prothoracic width, 1.0; widest prothoracic width (between apices of lateral tubercles), 1.2; humeral width, 3.1; elytral length, 5.3.

Type material. Holotype male from BRAZIL, Mato Grosso: Sinop (12°31′S, 55°37′W, BR 163 km 500 a 600, 350 m), X.1974, Alvarenga & Roppa col. DZUP469282 ( DZUP).

Etymology. The species epithet is in honor of Dr. Norma Giambarresi Ganho (DZUP), for all his help and support to the authors and for her work in the Taxonline Project.

Remarks. The color pattern of the elytra of Distenia (Distenia) normae sp. nov. is unique among the species of the subgenus. The new species is similar to D. (D.) cinctipennis Gounelle, 1911 , but differs by the pronotum with sparse and fine punctures, color pattern of the elytra, and femora bicolor. In D. (D.) cinctipennis , the pronotum has dense and coarse punctures, elytra with lateral dark band from base to apex, and the femora are unicolorous.

Figures

FIGURES 17–20. Distenia (D.) normae sp. nov., holotype, male: 17, dorsal view; 18, ventral view; 19, lateral view; 20, detail of head, frontal view.