Aiurasyma santandereana, 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

Aiurasyma santandereana sp. nov.

( Figures 1–4 )

urn:lsid:zoobank.org:act:8E04E112-1A36-4BA5-B57C-4EE95FF6774C

Description. Male. Integument mostly black with distinct blue reflections. Elytra with orange base (about anterior 1/8), remaining surface with violaceous reflections.

Body with long, erect, sparse whitish setae. Head. Frons, vertex, postclypeus and antennal tubercles coarsely, densely punctate; genae short, apex rounded; upper eye lobes well-separated, distance between them at least five times width of one upper lobe. Maxillary palpomere IV campaniform. Gulamentum sparsely, shallowly punctate. Antennae reaching elytral apex at antennomere X; antennomeres coarsely and densely punctate (punctures shallower and sparser toward apex), with long and dense dark setae, shorter and sparser toward apical antennomeres, with setae longer than remaining surface on inner side of basal antennomeres; scape curved basally, longer than antennomere III; antennal formula (ratio) based on length of antennomere III: scape = 1.53; pedicel = 0.13; IV = 1.13; V = 1.15; VI = 1.25; VII = 1.25; VIII = 1.25; IX = 1.28; X = 1.20; XI = 1.35.

Thorax. Prothorax subquadrate (slightly wider than long); with anterior and posterior constriction, and rounded median lateral tubercles. Pronotum coarsely and densely punctate; with two lateral, elongate gibbosities, from anterior to posterior constriction, slightly more elevated in anterior region, which are glabrous. Prosternum with transverse sulcus; prosternal process curved, width at narrowest point equal to 1/4 of procoxal cavity width. Mesoventral process emarginate at apex, width at narrowest point equal to 3/4 of mesocoxal cavity. Metaventrite finely and densely punctate laterally, sparser and finer toward median region (where is nearly glabrous). Scutellum glabrous, strongly emarginate at posterior margin. Elytra subparallel-sided, about 4 times as long as prothorax. Each elytron gradually thinner toward apex, coarsely and densely punctate, punctation organized into seven longitudinal rows, at apex the punctation is shallower, and some rows disappear; apex of elytra rounded. Femora fusiform; apex of femora unarmed.

Abdomen. Ventrites finely, sparsely punctate, punctures sparser to median region; apex of ventrite V slightly emarginate.

Dimensions (mm). Holotype male. Total length, 10.30; prothoracic length, 1.85; basal prothoracic width, 1.60; distal prothoracic width, 1.60; widest prothoracic width (between apices of lateral tubercles), 1.90; humeral width, 2.50; elytral length, 7.20.

Type material. Holotype male from COLOMBIA, Santander: San José de Suaita (1500 m), I.1999, “s. animal [salida animal]” col. ICN-007471 ( ICN).

Etymology. The epithet “santandereana” is a demonym alluding to the inhabitants of department of Santander in Colombia, where the specimen was collected.

Remarks. Aiurasyma santandereana sp. nov. differs from A. potira Martins & Galileo, 2001 by the deeper anterior and posterior constriction of prothorax, pronotal tubercles more elevated and entirely glabrous and shallow, posterior margin of the scutellum strongly emarginate, lighter region of the elytra reaching the scutellum, and the unicolorous legs. In A. potira ( Figs. 5–8 ), the constrictions of the prothorax are shallower, pronotal tubercles are less elevated, are punctate and with long setae, posterior margin of the scutellum is truncate, lighter region of the elytra does not reach the scutellum, and the legs (femora and tibiae) are bicolorous.

Figures

FIGURES 1–8. 1–4, Aiurasyma santandereana sp. nov., holotype, male: 1, dorsal view; 2, ventral view; 3, lateral view; 4, detail of head, frontal view. 5–8, Aiurasyma potira Martins & Galileo, 2001, male: 5, detail of head, frontal view; 6, dorsal view; 7, ventral view; 8, lateral view.