Coarctana glabra sp. nov.

Figs 19, 31E, F

Diagnosis.

Subgenital plate, in ventral view (Fig. 19H), ovoid, outer margin with minute setae. Connective (Fig. 19I) with stem thin, about as long as arm length. Style, in lateral view (Fig. 19K), ventral margin with median third with small, rounded lobe; apex strongly tapered, curved dorsally. Aedeagus (Fig. 19L, M) apodemal process elongated, broadly curved dorsally; apex tapered and truncated, finely serrated; shaft apex with two pairs of short processes: subapical pair directed ventrally, and apical pair curved laterally, as long as the subapical pair.

Measurements.

Total length: holotype male 8.0 mm.

Description.

Head, in frontal view (Fig. 19B), frons 1.1 × wider than long; frontogenal suture distant from eye margin by approximately half maximum width of clypeus; clypeus 1.5 × wider than long; lateral margins parallel; apex straight. Head, in lateral view (Fig. 19C), crown-face transition thin, almost foliaceus, with 3 transverse carinae; clypeus not inflated. Profemur AV row with 5-6 setae; PV row with 2 setae. Protibia PD row with 3 setae and undifferentiated intercalary setae; PV row with 2-3 setae and undifferentiated intercalary setae. Metatibia PD, AD and AV rows with 24, 13 and 14-15 macrosetae respectively. Metatarsomere I moderately elongated, 3 × longer than apical width; inner row of the ventral surface with 7-8 setae. Other characteristics as in generic description.

Coloration.

Head and thorax (Figs 19A-D, 31E, F) reddish-brown. Head (Fig. 19D) with pair of small circular black spots, near posterior margin, behind ocelli. Gena (Fig. 19B) yellowish; antennal pit dark brown. Pronotum (Fig. 19A) with black punctures and irregular black spots near anterior margin; proepimeron (Fig. 19C), with black band below pronotal carina, wider near anterior margin; lateral carina yellow. Mesonotum (Fig. 19A) with dark-brown lateral angles, pair of small median black spots near scutoscutellar suture, pair of small yellow spots on lateral angles. Forewing (Fig. 19D) strongly marked by dark-brown mottling; veins brown, outlined by dark brown. Legs yellowish with black punctures and maculae. Metatibia (Fig. 19C) with cucullate bases of setae blacks.

Male terminalia.

Sternite VIII (Fig. 19E) 1.5 × wider than long; lateral margins parallel; posterior margin slightly excavated each side of broad median lobe. Valve (Fig. 19F) 2 × wider than long; posterior margin notched medially. Pygofer, in lateral view (Fig. 19G), 1.5 × longer than maximum height; basodorsal process present but reduced; anteroventral margin truncated; posterodorsal margin rounded; posteroventral margin straight; apex broadly rounded. Subgenital plate, in lateral view (Fig. 19G), almost reaching pygofer apex; apex curved dorsally; in ventral view (Fig. 19H), ovoid, 2.5 × longer than wide, maximum width near basal third; outer margin with minute setae; lateral margins rounded; apex weakly tapered and rounded. Connective (Fig. 19I) wider than long; anterior margin weakly excavated; dorsal keel reduced; stem thin, about as long as arm length. Style, in dorsal view (Fig. 19J), with outer lobe reduced; in lateral view (Fig. 19K), with blade wider near base and tapered toward apex; dorsal margin slightly sinuate; ventral margin with apical half serrated, median third with small, rounded lobe; apex strongly tapered, curved dorsally. Aedeagus (Fig. 19L, M) preatrium weakly developed; dorsal apodeme with dorsal margin slightly excavated, lateral margins produced ventrolaterally; apodemal process elongated, strongly curved dorsally, slightly wider medially; apex tapered and truncated, finely serrated; shaft slightly asymmetrical, basal half weakly flattened dorsoventrally and cylindrical apically, curved dorsally near base; apex slightly twisted laterally, with two pairs of short processes: subapical pair directed ventrally and apical pair curved laterally, as long as the subapical pair. Other characteristics as in generic description.

Female.

Unknown.

Material examined.

Holotype male: Brazil: Amapá: "Brasil, AP, Serra do\ Navio, Igarapé na\ estrada para Rio Amapari ( Pedra Preta)\ XI.2014 J.A. Rafael & F.F. Xavier " (INPA).

Etymology.

The new species name refers to the subgenital plates without filiform setae.

Remarks.

C. glabra sp. nov. is sister to C. rana comb. nov. + C. serpenta comb. nov. with moderate branch support (SR = 65) (Fig. 7). Coarctana glabra sp. nov. resembles C. rana comb. nov. and C. serpenta comb. nov. by having the forewings (Figs 31E, 32C-F) with several small black maculae and by the similar shape of the apodemal processes of aedeagus (Fig. 19L) slender and strongly curved dorsally. The new species is easily separated by the subgenital plate (Fig. 19H) ovate and lacking long filiform setae.