Chnoodes discomaculata ( 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 : 274-275

Chnoodes discomaculata ( Crotch, 1874)

( Figure 3 )

Ladoria discomaculata Crotch, 1874: 280 ; Korschefsky, 1932: 231; Blackwelder, 1945: 451. Chnoodes discomaculata: Gordon, 1987: 34 .

Material examined. BRAZIL: Minas Gerais: Pouso Alegre, IX.1962, 6 specimens ( MZSP); IX.1962, 2 specimens, F.S. Pereira leg. ( DZUP). Paraná: Morretes, 20.VII.1995, 1 specimen; 05.V.1995, 1 specimen, Reynaud D.T. leg. ( DZUP).

Male. Length 2.80–2.92 mm, width 2.52–2.56 mm. Body rounded, with sparse whitish pubescence. General color black, center disc bare ( Figs 3 A–D). Antennae, mouthparts, apex of femur, tibia and tarsomeres brownish ( Fig. 3 B). Apical third of abdominal ventrites brownish.

Genitalia symmetrical; basal lobe shorter than paramere, tapered at apex ( Fig. 3 E). Parameres wide, elongated, with long bristles throughout their length ( Fig. 3 F). Sipho with rounded apex and short siphonal capsule ( Fig. 3 G).

Female. Length 2.92–3.08 mm, width 2.48–2.56 mm. Coxites longer than wide, slender, subtriangular; apex mammilliform, with long bristles ( Fig. 3 H). Spermatheca C-shaped, elongated, with slightly acuminate apex ( Fig. 3 I).

Geographical distribution. Brazil (MG, PR).

Remarks. Chnoodes discomaculata ( Fig. 3 ) resembles C. tarsalis ( Fig. 6 ) and C. machadoi ( Fig. 7 ) in the color pattern, but is clearly distinguished by the absence of pubescence on the center disc; it also differs in the shape of the male and female genitalia.

Figures

FIGURE 3. Chnoodes discomaculata (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.

FIGURE 6. Chnoodes tarsalis Weise, 1904. 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 7. Chnoodes machadoi sp. nov. Paratype male. 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.