Asidopsis olsoni 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 olsoni

description: Asidopsis olsoni Triplehorn and Flores, new species
(Figs. 1, 3–5)
Description. Holotype, male. Oblong­oval, flattened, piceous, entire dorsal surface dull and microreticulate (Fig. 1). Head with transverse impression behind clypeus; clypeus swollen and with truncate anterior margin; genae prominently raised above antennal insertions, coarsely and densely punctured; eyes reniform, dorsal lobe slightly larger than ventral; antennae almost attaining pronotal base, terminal segment tomentose at apex (Fig. 3), subapical segment with tomentose patches on both sides of apex (Fig. 3); mentum transverse, apical margin broadly emarginate; terminal segment of maxillary palpus large, scalene. Pronotum slightly longer than broad (Fig. 1), widest before middle, lateral marginal bead thin, subparallel, sinuate in basal half, apical margin deeply emarginate, angles acute and prominent, basal margin feebly bisinuate, angles acute but not prominent, surface discretely punctured medially, punctures becoming larger and somewhat rugose laterally (Fig. 1). Elytra broad, flattened, uniformly subconvex from side to side, lateral margins strongly costate, reflexed at base and almost attaining apex, gradually disappearing on apical declivity (Fig. 1); epipleura poorly defined basally until about middle of third visible abdominal sternum from which point it is strong and sharp to elytral apex, entire surface dull with very small granules separated by several times their diameters. Hypomeron and prosternum uniformly finely, deeply and sparsely punctate; prosternal process strongly convex between procoxae, its apex broad and truncate; mesosternum coarsely and rugosely granulate, anterior face not excavate; coxae all widely separated; intercoxal margin of basal abdominal sternum rounded; abdominal sterna finely but not densely granulate except at apex of terminal sternum where granules are closer together. Legs very slender, coarsely and densely punctured. Length: 14.5 mm; width: 6.7 mm.
Male genitalia. Rods of sternum IX nearly touching at basal half. Dorsal membrane of proctiger with setae on distal quarter. Lateral styles of tegmen with anteroventral margin strongly bisinuate, widest at middle (Fig. 5), with setae on distal quarter of ventral surface (Fig. 5). Median lobe proximally broadened (Fig. 4).
Variation. All four males of the type series are very similar in size, shape and luster. The female is slightly longer and broader (L: 15.5 mm; W: 7.2 mm) but otherwise not significantly different from the males.
Types. Holotype, male: Arizona, Pima County, Kitt Peak, 3­VII­1984, C. A. Olson (USNM, Smithsonian Institution, Washington, D.C.). Four paratypes: one male same data as holotype (UAIC, University of Arizona, Tucson), two males same locality as holotype except 20­VII­1984 (OSUC, Ohio State University, Columbus OH), one female same locality as holotype except 22­X­ 1982 (UAIC). These specimens were likely collected in pitfall traps (C. A. Olson, pers. comm.)
Etymology. We take pleasure in naming this interesting species in honor of Carl A. Olson, who collected the type series.
Discussion. Asidopsis olsoni superficially resembles A. macra (Horn) in general body configuration, especially in the shape of pronotum, which is longer than broad (in all other species of Asidopsis, the pronotum is broader than long). It differs in the distinct cariniform lateral margins of the elytra, dull and minutely granulate elytral surface, and the punctation of the pronotum (rugose laterally and basally).
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 286-288, DOI: 10.1649/0010-065x(2002)056[0285:tnsoac]2.0.co;2, http://zenodo.org/record/4900447