Comprehensive Description

provided by Smithsonian Contributions to Zoology
Zopherus granicollis ventriosus (Casey)

Zopherodes ventriosus Casey, 1907a:39.

Zopherodes parvicollis Casey, 1907b:466 [new synonymy].

This subspecies differs from the nominate subspecies in having much finer elytral tubercles, with the lateral ones always transversely elongate. The pronotal punctures are variable as in typical granicollis, varying from coarsely muricate to granulate. Except for the previously mentioned Death Valley specimens, I have seen no intermediate specimens between the two subspecies, granicollis and ventriosus, apparently occupying reciprocal ranges. No specimens are available from the broad area which separates the two.

MEASUREMENTS.—Length 14.5–21.0 mm; width 6.0–7.0 mm.

TYPES.—Zopherodes ventriosus Casey. Holotype (USNM 46356), California (southern, fide Casey).

Zopherodes parvicollis Casey. Holotype (USNM 46358), Round Meadow Giant Forest, California, Hopping.

Both of these are very similar in sculpture, the principal difference being that the latter is very dull in surface luster. Both are represented in the Casey collection by uniques.

SPECIMENS EXAMINED.—48 from the localities that follow. UNITED STATES. CALIFORNIA: Cedar Grove, Dalton Creek at 4,800 feet, Huckleberry Meadow, Kings River, Millwood, and Woods Creek in Fresno County; Saline Valley in Inyo County; Kern River Camp 3, Sequoia National Forest, and Mill Potrero in Kern County; Bass Lake and Sugar Pine in Madera County; Miami Ranger Station at 4–5,000 feet in Mariposa County; Colony Mill, Davenport, Atwells Mill, Kaweah, Lloyd Meadow, Round Meadow Giant Forest, and Wells Mill in Tulare County. Specimens have been collected from 3 April to 16 October.
bibliographic citation
Triplehorn, Charles A. 1972. "A review of the genus Zopherus of the world (Coleoptera: Tenebrionidae)." Smithsonian Contributions to Zoology. 1-24. https://doi.org/10.5479/si.00810282.108