Asidopsis humeralis Triplehorn, new species
Creators: name: Triplehorn, Charles A.
name: Flores, Gustavo E.
Publisher: name: Zenodo
Year: 2002
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Tenebrionidae
Asidopsis
Asidopsis humeralis

description: Asidopsis humeralis Triplehorn and Flores, new species
(Figs. 2, 6–8)
Description. Holotype, male. Oblong­oval, convex, piceous, dorsal surface shining (Fig. 2). Head with triangular impression behind clypeus which is swollen and with truncate anterior margin; genae prominently raised above antennal insertions, coarsely but not densely punctured, punctures well­separated, becoming smaller posteriorly; eyes narrowly reniform, dorsal lobe slightly larger than ventral; antennae short, stout, extending only slightly behind middle of pronotum; terminal segment tomentose at apex (Fig. 6), subapical segment with continuous tomentose band (Fig. 6); mentum cordiform, apical margin shallowly emarginate; terminal segment of maxillary palpus large, scalene. Pronotum slightly broader than long (Fig. 2), widest at middle, lateral margins thick, subparallel, not reflexed, apical margin deeply emarginate, angles acute and prominent, basal margin strongly bisinuate, angles acute, prominent, overlapping base of elytra, surface minutely and sparsely punctate medially, punctures becoming larger and somewhat rugose laterally (Fig. 2). Elytra broad, convex, lateral margins smoothly rounded from side to side, humeral angles abruptly narrowly expanded, receiving acute pronotal angles (Fig. 2); epipleura not evident until about middle of third visible abdominal sternum; entire surface shining, finely and sparsely punctate, propleura smooth, almost impunctate except along margins; prosternum finely, shallowly and rugosely punctate; prosternal process strongly convex between procoxae, the apex narrowing posteriorly; mesosternum shallowly, rugosely punctate, anterior face not excavate; coxae all widely separated; intercoxal margin of basal abdominal sternum rounded; abdominal sterna shallowly, finely punctured with faint longitudinal wrinkles, terminal sternum more densely punctured, forming horizontal wrinkles. Length: 15.6 mm; width: 6.2 mm.
Male genitalia. Rods of sternum IX nearly touching at basal third. Dorsal membrane of proctiger with setae on distal 1/5. Lateral styles of tegmen with anteroventral margin bisinuate, widest at base (Fig. 8), with setae on distal quarter of ventral surface (Fig. 8). Median lobe not broadened proximally (Fig. 7).
Variation. The four paratypes are not much different from the holotype except for the size. The female is 17.3 mm in length and 7.0 mm in width. The same measurements for the male paratypes are: 13.0– 13.8 mm in length and 5.6–6.0 mm in width.
Types. Holotype, male: Mexico, Chihuahua, Sierra Madre Occidental, Madera, 31­VII­1990, 2,000 m, leg. Heinz (SMNS, Staatliches Museum für Naturkunde, Stuttgart, Germany). Four paratypes same data as holotype: one female (SMNS), one male (USNM, Smithsonian Institution, Washington, D.C.), two males (OSUC, The Ohio State University, Columbus OH).
Etymology. The name refers to the abruptly expanded humeral angles of the elytra.
Discussion. Asidopsis humeralis even more closely resembles A. macra (Horn) than does A. olsoni. In addition to the general body configuration, some specimens of A. macra have a suggestion of the expanded humeral angles of the elytra, but never as abruptely pronounced as in A. humeralis. In A. humeralis, the elytra are shiny and distinctly punctate and the disc of the pronotum is minutely and sparsely punctate; in A. macra the elytra are dull and impunctate and the disc of the pronotum is more coarsely and densely punctate.
description: Published as part of Triplehorn, Charles A. & Flores, Gustavo E., 2002, Two New Species Of Asidopsis Casey From Arizona And Chihuahua, Mexico (Coleoptera: Tenebrionidae: Asidini), pp. 285-290 in The Coleopterists Bulletin 56 (2) on pages 288-290, DOI: 10.1649/0010-065x(2002)056[0285:tnsoac]2.0.co;2, http://zenodo.org/record/4900447