Thisiomorphus latus Pic

Pollock, Darren A., 2016, Revision of Thisiomorphus Pic (Coleoptera: Mycteridae: Eurypinae) with descriptions of eleven new species from Central and South America and a key to genera of Neotropical Eurypinae, Zootaxa 4093 (3), pp. 301-322 : 318

Thisiomorphus latus Pic

( Figs 10 , 34)

Thisiomorphus latus Pic 1931: 31 ( Brazil) . – Blackwelder 1945: 493. Holotype, sex unknown, labeled: “Corumba Matt Grosso. [-19.072177, -57.644348] // [handwritten] hanches _____ avec trochantin Thisiina // [handwritten] ongles appendic... // [yellow] type // [red] TYPE // Thisiomorphus ng. latus // [large red label] HOLOTYPE Thisiomorphus latus Pic ”, in MNHN, Pic Coll.

Diagnosis. this species, along with T. bolivianus , are the only two in the genus exhibiting a bicolored dorsum (reddish forebody and blue-black elytra) and reddish scutellum, head and antennae. The single specimen of T. latus has anteriorly divergent lateral pronotal margins and relatively parallel-sided elytra, while the pronotum of T. bolivianus is widest about midlength, and the elytra are distinctly ovate.

Description. TL 5.00 mm; GEW 2.00 mm. Measurements (in mm): HL = 0.88; PL = 0.92; EL = 3.20; GHW = 1.28; GPW = 1.48; GEW = 2.00. Ratios: EL/GEW = 1.60; GPW/PL = 1.61; TL/GEW = 2.50; GPW/PL = 1.16. With characters of Thisiomorphus , and the following:

Body moderately elongate (TL/GEW 2.50), lateral elytral margins slightly arcuate.

Color. Antennae and maxillary palpi uniformly testaceous; head, pronotum and scutellum concolorous, rufous; elytra piceous, with very slightly blue metallic lustre; legs uniformly rufo-testaceous; venter rufous, slightly darker than legs.

Antennae relatively short; antennomeres 3–7 short, subfiliform; antennomeres 8–10 short, indistinctly widened distally.

Pronotum distinctly wider than long (GPW/PL 1.61), slightly wider than head (GPW/GHW 1.16); lateral margins slightly arcuate, maximum width anterior of midlength; dorsal surface relatively flat, without depressions.

Male genitalia unknown.

Distribution. The holotype is from BRAZIL (Mato Grosso do Sul).

Figures

FIGURES 7 – 12. Dorsal habitus of Thisiomorphus species. 7. T. curticornis, n. sp., male holotype; 8. T. festivus, n. sp., male holotype; 9. T. inaequalis, n. sp., male holotype; 10. T. latus Pic, holotype; 11. T. osaensis, n. sp., female; 12. T. solisi, n. sp., male holotype.