Pseudoryssomus rufomarginatus, Almeida, Lúcia M. & Santos, Paula B., 2014

Almeida, Lúcia M. & Santos, Paula B., 2014, Synopsis of Oryssomini Gordon (Coleoptera: Coccinellidae) from the Neotropical region with new species of Oryssomus Mulsant, Pseudoryssomus Gordon and Gordonoryssomus Almeida & Lima, Zootaxa 3846 (1) : -

Pseudoryssomus rufomarginatus sp. nov.

( Fig. 10 )

Description of holotype (female). Length 3.08, width 2.25 mm. Form elongate oval, widest at middle of elytra, not flattened dorsoventrally ( Fig. 10 C). General color yellowish red, middle of thorax and abdomen yellowish red. Outline of pronotum and elytron discontinuous. Pronotum yellowish red, with a dark brown basal spot, translucent at apex; finely, densely punctured; pubescence of semidecumbent yellowish hairs ( Fig. 10 D). Elytra yellowish red, with a large dark brown spot subquadragular, covering most of elytra, reaching the humeral callus, with constriction in the apical and basal third, not reaching elytral margin ( Fig. 10 A). Elytral punctures intermixed coarse and fine, dense, slightly larger than on pronotum; sparse in the discal area. Antenna, mouthparts, hypomera, epipleura, and legs brownish yellow. Metaventrite finely, sparsely punctured medially and anteriorly; coarsely, densely punctured laterally and posteriorly, with punctures large, often confluent ( Fig. 10 B). Abdominal ventrites coarsely punctured, punctures separated by about a diameter or less, punctures becoming coarser laterally. First abdominal ventrite with postcoxal line complete, extending beyond middle of first ventrite; precoxal area coarsely punctured on base of cavity ( Fig. 10 E). Genitalia with genital plates triangular, elongate, styli with setae; spermatheca elongate, with apex bulbous ( Fig. 10 F, G).

Male. Unknown.

Etymology. The name of this species refers to the color of the elytra.

Discussion. Pseudoryssomus rufomarginatus sp. nov. is somewhat similar with P. triangulus sp. nov., but differs in the shape of the spot and male and female genitalia. Although the pattern color is similar with Gordonoryssomus limeirai sp. nov., it differs by the 10-segmented antenna, body not flattened dorsoventrally and tibia widened, flattened and angulated on external margin.

Type material. “Tunapuna/ Trinidad, W.I./ Aug. 26-31, 1969 /H. & A. Howden” “ Pseudoryssomus /n. sp./det. R. Gordon 94” “♀” [white label]. “ HOLOTYPE / Pseudoryssomus rufomarginatus / Almeida & Santos, 2014” [red label]. 1 ex. “ DZUP /185793” [ DZUP].

Geographical distribution. Tunapuna, Trinidad and Tobago ( Fig. 16 ).

Figures

FIGURE 10. Pseudoryssomus rufomarginatus sp. nov. (A – D) Habitus: (A) dorsal; (B) ventral; (C) lateral; (D) frontal view. (E) Abdomen; (F – G) female terminalia: (F) coxites; (G) spermatheca.

FIGURE 16. Geographical distribution of Pseudoryssomus spp.