Chnoodes pentagona Crotch, 1874

Krüger, Thaysa C., Castro-Guedes, Camila F. & Almeida, Lúcia M., 2016, Two new species of Chnoodes Chevrolat (Coleoptera: Coccinellidae) from Brazil, Zootaxa 4078 (1), pp. 269-283 : 275-276

Chnoodes pentagona Crotch, 1874

( Figure 4 )

Chnoodes pentagona Crotch, 1874: 287 ; Sicard, 1912: 305; Korschefsky, 1932: 226; Blackwelder, 1945: 450.

Material examined. BRAZIL: Amazonas: Itacoatiara, V.1962, Dirings leg., 1 specimen ( MZSP). Amapá: Macapá, 2.II.2004, A.A.B. Barbosa leg., 2 specimens ( DZUP). Mato Grosso: Barra do Tapirapé, 14.XII.1964, B. Malkin leg., 1 specimen ( DZUP).

Male. Length 3.12 mm, width 2.64 mm. Body elongate-oval, with long dense yellowish pubescence. General color yellowish brown, pronotum with central black spot; scutellum black. Each elytron with four black spots: the central spots fused, forming a pentagonal spot; and three on the lateral margin of each elytron, one triangular spot on the humeral callus, one rectangular spot in the middle, and one small triangular spot on the apex ( Figs 4 A–D). Antennae, mouthparts, hypomera, epipleurum and legs yellowish-brown. Meso, metasternum and first abdominal ventrite black ( Fig. 4 B).

Genitalia symmetrical; basal lobe wide, half length of parameres, tapered at apex ( Fig. 4 E). Parameres wide, elongated, with long bristles throughout their length ( Fig. 4 F). Sipho sinuous, with wide siphonal capsule ( Fig. 4 G).

Female. Length 3.00–3.40 mm, width 2.40–2.80 mm. Coxites longer than wide, subtriangular; apex mammilliform, with long bristles ( Fig. 4 H). Spermatheca C-shaped, elongated, with slightly narrowed apex ( Fig. 4 I).

Geographical distribution. Brazil (AM, AP, MT).

Remarks. Chnoodes pentagona ( Fig. 4 ) resembles C. brasiliensis ( Fig. 1 ), but is clearly distinguished by the size and distribution of the spots on the elytra, and the shape of the genitalia.

Figures

FIGURE 1. Chnoodes brasiliensis Korschefsky, 1935. A – D. habitus; A. dorsal; B. ventral; C. frontal view; D. lateral; E – G. male genitalia; E. tegmen, ventral; F. tegmen, lateral; G. sipho lateral view; H – I. female genitalia; H. coxites; I. spermatheca.

FIGURE 4. Chnoodes pentagona Crotch, 1874. A – D. habitus; A. dorsal; B. ventral; C. frontal view; D. lateral. E – G. male genitalia: E. tegmen, ventral; F. tegmen, lateral; G. sipho lateral view. H – I. female genitalia; H. coxites; I. spermatheca.