Chnoodes melanus Krüger & Almeida, 2018

Krüger, Thaysa C., Churata, Julissa, Castro-Guedes, Camila F. & Almeida, Lúcia M., 2018, New species of Chnoodes Chevrolat (Coleoptera: Coccinellidae) from French Guiana, Zootaxa 4399 (3), pp. 386-398 : 395

Chnoodes melanus Krüger & Almeida sp. nov.

( Fig. 6 )

Diagnosis. Chnoodes melanus sp. nov. resembles C. tristis sp. nov. in the black color of the integument, but differs in having the pronotum without lateral spots, in the shape and size of the male genitalia, and in the shape of the spermatheca.

Description. Male. Length 2.84–3.02 mm, width 2.46–2.58 mm. Body rounded, with short fine whitish pubescence. Integument of pronotum, scutellar shield and elytra black, with metallic-brown reflections; pronotum border translucent ( Figs. 6A, D ). Head black, antennae and mouthparts orangeish or brownish ( Fig. 6C ). Meso- and metaventrite black. Epipleuron black, with deep excavations to receive femora. Legs with femora, tibiae and tarsi orangeish ( Fig. 6B ).

Genitalia with tegmen, penis guide, phallobase and parameres symmetrical. Penis guide shorter than parameres, strongly tapered at apex, mammiliform ( Fig. 6E ). Parameres articulated with phallobase, distant from each other, 3x longer than penis guide, with long bristles along parameres ( Fig. 6F ). Penis sclerotized, J-shaped, apex wide and rounded, penis capsule long, T-shaped ( Fig. 6G ).

Female. Length 3.22–3.34 mm, width 2.54–2.68 mm. Similar to male. Genitalia with coxites longer, 3.5x longer than wide, subtriangular; stylus with short bristles ( Fig. 6H ). Spermatheca long, C-shaped, strongly curved near base, ramus and nodulus distinct; apex rounded ( Fig. 6I ).

Etymology. Latin, melanus = black; referring to the general color.

Geographical Distribution. French Guiana (Régina, Roura) ( Fig. 7 ).

Type material. FRENCH GUIANA: Commune de Régina: “Guyane Française, Réserve/Naturelle des Nouragues, Camp/Inselberg, 4°05’N 52°41’W,/alt. 411 m, 28.VII.2013, piège/à interception vitré, SEAG col.”, “♂”, “MNHN”, “HOLOTYPE/ Chnoodes melanus ” [red label]. The following specimens are designated as PARATYPE Chnoodes melanus [yellow label]: “Guyane Française, Réserve/Naturelle des Nouragues, Camp/ Inselberg, 4°05’N 52°41’W,/alt. 411 m, 18.VII.2013, piège/à interception vitré, SEAG col.”, [DZUP 285798 ♂]; “Guyane Française, Réserve/Naturelle des Nouragues, Camp/Inselberg, 4°05’N 52°41’W,/alt. 411 m, 21.VI.2013, piège/à interception vitré, SEAG col.”, [DZUP 284428 ♀]; “04°02.268’N 52°40.352’W/French Guyane, Régina,/ Nouragues Saut Pararé,/vitre, 20.X.2009 /Stéphane Brulé leg.”, [MNHN ♀]. Commune de Roura: “French Guyane, Cayenne,/Roura, Montagne des/Chevaux, 22.VIII.2010,/vitre, S. Brulé leg.”, [DZUP 14 5647 ♀].

Figures

FIGURE 7. Map showing the known geographical distribution of the species of Chnoodes Chevrolat, 1849, from French Guiana.

FIGURE6. Chnoodes melanus Krüger & Almeida sp. nov. A–D. Habitus; A. dorsal; B. ventral; C. frontal; D. lateral view.E– G. Male genitalia: E. tegmen, ventral; F. tegmen, lateral; G. penis, lateral view. H–I. Female genitalia; H. coxites; I. spermatheca.