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

Carvalho-Filho, Fernando Da Silva, Esposito, Maria Cristina & Mello-Patiu, Cátia Antunes De, 2021, Revision of Nephochaetopteryx Townsend, 1934 (Diptera: Sarcophagidae), Zootaxa 4928 (1), pp. 1-83 : 17-19

Nephochaetopteryx boruca sp. nov.

( Fig. 5 )

Type material. HOLOTYPE ♁ ( MNRJ): Costa Rica: Cartago / Turiaba 2000 / 17 July 1965 / H.G. Real [printed on rectangular white label]. [Holotype in good condition, with abdomen and terminalia cleared and preserved in glycerin in a microvial pinned beneath the specimen.]

Description. Male (holotype). Length = 5.0 mm.

Head. Fronto-orbital and parafacial plates, gena and postgena and postocular strip with grayish-yellow microtomentum. Frontal vitta black, with basal half reddish-brown. Six 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 three or four spines. Mid femur with two median setae and without a differentiated posteroventral seta. Wing hyaline, with a dark spot beginning in the terminal portion of vein R 1 and 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 of dorsal and lateral surfaces. Sternite 2 yellow with a brown median strip; sternites 3 to 4 brown with lateral margin yellow. Sternites 2 to 4 with yellowish setulae and some black marginal setae and sternite 4 with a median patch of thick setae near posterior margin.

Terminalia. Sternite 5 brown, longer than wide, with small setae restricted to posterior half; cleft shallow, extending slightly beyond base of lobe; lobe rounded, with a tuft of short setulae; arm very small, as long as lobe ( Fig. 5E ). Syntergosternite 7+8, epandrium and cercus brown. Cercus, tapering distally in lateral view, with pointed apex, bent anteriorly, and a very small, rounded preapical protuberance dorsally ( Fig. 5A ). Cercal prongs separated and parallel in dorsal view ( Fig. 5B ). Cercus without setulae on lateral margins and prongs, and with long and thick setae restricted to cercal base ( Figs 5 A–B). Surstylus triangular, with a small protuberance basally on anterior margin, with setulae restricted to posterobasal corner and a long seta apically ( Fig. 5A ). Pregonite elongate, with distal portion perpendicular to base, with rounded apex and with small, pointed setae on posterior margin ( Fig. 5C ). Postgonite narrowed distally, with apex curved anteriorly and a long seta on anterior margin ( Fig. 5D ). Basiphallus T-shaped in lateral view, about one-third of length of distiphallus ( Fig. 5F ). Distiphallus club-shaped in lateral view, with apical margins sinuous; ventral margin with grooves ( Fig. 5F ). Vesica L-shaped in lateral view, with distal half covered with minute cuticular spines and basal half with a prominent projection ( Fig. 5F ). Lateral and median styli elongate, of about half of width of widest portion of lateral wall of distiphallus, and both inserted close to apical surface of distiphallus ( Fig. 5F ).

Female. Unknown.

Etymology. The specific epithet derives from the word “Boruca”, which is the designation of an indigenous people from Costa Rica, and should be treated as a noun in apposition.

Distribution. NEOTROPICAL—Costa Rica (Cartago).

Remarks. This species shares with N. pallidiventris and N. spinosa the short, T-shaped distiphallus and Lshaped vesica, but it can be distinguished from these species by having cercus elongate and tapering distally and surstylus triangular. In N. pallidiventris and N. spinosa the cercus is short and truncate apically and the surstylus is rounded.

Figures

FIGURE 5. Nephochaetopteryx boruca sp. nov., male terminalia of holotype (MNRJ). A. Epandrium, surstylus and cercus, left lateral view; arrow showing preapical protuberance. B. Cerci, dorsal view; arrow showing preapical protuberance (setation omitted on the right side). C. Pregonite, left lateral view. D. Postgonite, left lateral view. E. Sternite 5, ventral view (setation omitted on the right side). F. Phallus, left lateral view. Abbreviations: bp = basiphallus; dp = distiphallus; ip = inner process of vesica; ls = lateral stylus; ms = median stylus; ve = vesica. Scale bars: A, B, E = 0.1 mm; C, D, F = 0.05 mm.