Nephochaetopteryx canga, Carvalho-Filho & Esposito & Mello-Patiu, 2021

Nephochaetopteryx canga View in CoL sp. nov.

( Fig. 6 View FIGURE 6 )

Type material. HOLOTYPE ♁ ( MPEG): Brasil Pará / Serra Norte / N1- CANGA / 31 .X.3X.1985 [printed and handwritten on rectangular white label] // Armadilha / 1,6m / Suspensa [= suspended trap at a height of 1.6 meters] [printed and handwritten on rectangular white label] // Brasil Pará / J. Dias [printed on rectangular white label] // MPEG DIP / 12181645 [printed on rectangular white label]. [ Holotype in good condition, with terminal portion of abdomen, sternite 5 and rest of terminalia cleared and stored in glycerin in a plastic microvial pinned beneath the specimen.]

Description. Male ( holotype). Length = 5.3 mm.

Head. Fronto-orbital and parafacial plates, gena, postgena and postocular strip with yellowish-gray microtomentum. Frontal vitta black with basal half reddish-brown. Five frontal setae. Palpus brown.

Thorax. Chaetotaxy: dorsocentrals 2+4 (first two weak); intra-alars 2+2; supra-alars 1+3, notopleurals 1, subprimary; anepisternals 6; merals 6. Ctenidium consisting of six spines. Mid femur with two median setae and without a differentiated posteroventral seta. Wing hyaline, with dark spot beginning in the terminal portion of vein R 1, filling the distal third of cell r 1 and the upper half of the distal half of cell r 2+3; vein R 4+5 setulose dorsally to crossvein r-m.

Abdomen. Tergites brown with a band of golden microtomentum on anterior 4/5 on dorsal and lateral surfaces. Sternites 2 to 4 yellow with a brown median strip, covered with yellowish setulae and with marginal setae.

Terminalia. Sternite 5 yellowish-brown, with small setae restricted to posterior half; cleft deep, nearly reaching middle of sternite; lobe reduced, quadrate and with a tuft of short setulae; arm very small, glossiform ( Fig. 6E View FIGURE 6 ). Syntergosternite 7+8, epandrium and cercus brown. Cercus short, tapering distally, with rounded tip bent dorsally ( Fig. 6B View FIGURE 6 ). Cercal base with long and thick setae ( Figs 6 View FIGURE 6 A–B). Cercal prongs parallel, with divergent tips and without setulae on distal third ( Fig. 6A View FIGURE 6 ). Surstylus triangular, with setulae restricted to basal half and small pointed setae at apex ( Fig. 6B View FIGURE 6 ). Pregonite with distal half perpendicular to base; anterior margin with a prominent glossiform projection; posterior margin with small pointed setae ( Fig. 6C View FIGURE 6 ). Postgonite shorter than pregonite, narrowed at apex, which is gently curved anteriorly; anterior margin with one long seta (shorter than postgonite) and minute and pointed setae ( Fig. 6D View FIGURE 6 ). Basiphallus short, about half as long as distiphallus and narrowed posteriorly ( Fig. 6F View FIGURE 6 ). Distiphallus with anterior margin serrated and with grooves laterally ( Fig. 6F View FIGURE 6 ). Vesica angled, with distal portion widened in lateral view ( Fig. 6F View FIGURE 6 ). Inner process of vesica longer than wide in lateral view ( Fig. 6F View FIGURE 6 ). Lateral and median styli very short, of about one-third of width of lateral wall of distiphallus, and both inserted close to apical surface of distiphallus ( Fig. 6F View FIGURE 6 ).

Female. Unknown.

Etymology. “Canga” is the name of an uncommon, savanna-like vegetation that grows on the iron ore-bearing rocks of the region of Carajás in the Brazilian Amazon, where the type specimen was collected. Therefore, the specific epithet canga is a noun in apposition.

Distribution. NEOTROPICAL—Brazil ( Pará).

Remarks. This species is similar to N. molinai and N. inca sp. nov. in the shape of the cercus and pregonite. However, it differs from N. molinai in having a very small lobe of sternite 5 and the projection of the anterior margin of the pregonite glossiform, and from N. inca sp. nov. by the shape of the vesica and gonites.