Oryssomus guillermo, 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) : -

Oryssomus guillermo sp. nov.

( Fig. 3 )

Description of holotype (male). Length 4.02, width 2.83 mm. Form elongate oval, widest at middle of elytra, flattened dorsoventrally ( Fig. 3 C). General color reddish brown, thorax and abdomen dark brown medially ( Fig. 3 A, B). Outline of pronotum and elytron discontinuous. Antenna, mouthparts, hypomera, epipleura and legs reddish brown. Clypeus and frons joined at abrupt angle. Pronotum translucent; finely, densely punctured, punctures uniform in size; pubescence of semidecumbent yellowish hairs; with black spot at base and two small black transverse spots in the middle ( Fig. 3 D). Elytra reddish brown with a black large spot in the base, extending 2/3 to the total length of the elytra ( Fig. 3 A). Elytral punctures coarse, dense, slightly larger than on pronotum and similarly dense, uniform in size. Metaventrite finely, sparsely punctured medially and anteriorly; coarsely, densely punctured laterally and posteriorly with punctures large, often confluent. Each puncture with long, yellow, decumbent seta. Abdominal ventrites coarsely punctured, punctures separated by about twice a diameter, punctures becoming coarser laterally and on last ventrite. First abdominal ventrite with postcoxal line extending beyond middle of ventrite ( Fig. 3 E). Genitalia with basal lobe shorter than paramere, lateral margin slightly thickened, parameres slightly curved in lateral view ( Figs. 3 G, H); sipho simple, apex nearly membranous, unmodified ( Fig. 3 F).

Female. Length 3.93, width 2.72 mm. Similar to male in all aspects externally. Genitalia with genital plates not elongate, styli with setae; spermatheca elongate, unmodified ( Fig. 3 I).

Etymology. This species is named in honor of Guillermo González, one of the most enthusiastic Coccinellidae researchers.

Discussion. Oryssomus guillermo sp. nov. resembles O. calix sp. nov., O. guyanensis sp. nov. and O. unimaculatus in the color pattern, but differs in the shape of the dorsal black spot and male and female genitalia.

Type material. “ Guyane Française,/Commune de Roura,/Montagne des Chevaux,/RN2 PK22, 06.IV.2013,/ malaise SLAM SEAG col.” “♂” [white label]. “ HOLOTYPE / Oryssomus guillermo /Almeida & Santos, 2014” [red label]. 1 ex. [ MNHN]; “ Guyane Française,/Commune de Roura,/Montagne des Chevaux,/RN2 PK22, 17.III.2013,/ solaire authomatique,/ SEAG col.” [white label]. “ PARATYPE / Oryssomus guillermo /Almeida & Santos, 2014” [yellow label]. 1 ex. “ DZUP /289989” [ DZUP]; “ Guyane Française,/Commune de Roura,/Montagne des Chevaux,/ RN2 PK22, 31.III.2013,/malaise SLAM, SEAG col.” “♀” [white label]. “ PARATYPE / Oryssomus guillermo / Almeida & Santos, 2014” [yellow label]. 1 ex. [ MNHN]; “ Guyane Française,/Bélvédère de Saül,/ 13.V.2011, malaise SLAM,/ SEAG col.” [white label]. “ PARATYPE / Oryssomus guillermo /Almeida & Santos, 2014” [yellow label]. 1 ex. “ DZUP /289147” [ DZUP].

Geographical distribution. Montagne des Chevaux; Bélvédère de Saül, French Guiana ( Fig. 15 ).

Figures

FIGURE 3. Oryssomus guillermo sp. nov. (A – D) Habitus: (A) dorsal; (B) ventral; (C) lateral; (D) frontal view. (E) Abdomen; (F – H) male genitalia: (F) sipho; (G) tegmen, ventral; (H) lateral view. (I) female terminalia, coxites and spermatheca.

FIGURE 15. Geographical distribution of Oryssomus spp.