Nephochaetopteryx lamasi, 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 : 36-38

Nephochaetopteryx lamasi sp. nov.

( Fig. 15 )

Type material. HOLOTYPE ♁ ( MZUSP): Brasil: SP / Teodoro Sampaio / Pq. Est. Do Morro do Diabo [= Morro do Diabo State Park] / Trilha da Taquara [= Taquara Trail] / Malaise / 30.IX–4.X.2002 / V. C. Silva col. [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, parafacial plates, postocular strip, gena and postgena with golden microtomentum. Frontal vitta black. 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 5; merals 5. Ctenidium consisting of five spines. Mid femur with three 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 grayish microtomentum on anterior 4/5 of dorsal and lateral surfaces.

Terminalia. Sternite 5 brown; with a deep cleft, nearly reaching middle of sternite; lobe quadrate with pointed projection in outer lateral margin; arms divergent, very narrow with rounded apex ( Fig. 15E ). Cercus shorter than epandrium with distal portion curved posteriorly and a preapical protuberance dorsally in lateral view. Cercal prong without setulae on tip and on inner lateral margin. Cercal base with a middle lateral clutch of differentiated setulae and several long and thick setae basally ( Fig. 15A ). Cercal prongs convergent with a rounded preapical protuberance on inner lateral margins in dorsal view ( Fig. 15B ). Surstylus rounded with a small protuberance apically without setulae ( Fig. 15A ). Pregonite narrow and elongate, curved anteriorly, with rounded apex and few small pointed setae on posterior margin ( Fig. 15C ). Postgonite shorter than pregonite, tapering distally, with a long seta and some small setae on anterior margin ( Fig. 15D ). Basiphallus about half as long as distiphallus and curved dorsally ( Fig. 15F ). Distiphallus elongate, with vetroapical margin bearing a narrow and pointed projection; ventral margin with a claw-like projection ( Fig. 15F ). Inner process of vesica elongate and arched, without spine-like processes. Vesica elongate, slightly angled, with a pointed triangular projection on basal half and with rounded apex in lateral view ( Fig. 15F ). Lateral and median styli of about half of width of widest lateral wall of distiphallus, and both inserted at the level of vesica base ( Fig. 15F ).

Female. Unknown.

Etymology. This species is named in honor of Brazilian dipterist Dr. Carlos José Einicker Lamas (MZUSP), in recognition of his contributions to our knowledge of the Diptera fauna of Brazil and for his contribution to an early version of this manuscript.

Distribution. NEOTROPICAL—Brazil (S„o Paulo).

Remarks. This species differs from the remaining species of the genus in having cercus with a rounded preapical protuberance on the inner lateral margin and ventral margin of distiphallus with a large claw-like projection.

Figures

FIGURE 15. Nephochaetopteryx lamasi sp. nov., male terminalia. Holotype specimen from Teodoro Sampaio, S„o Paulo, Brazil (MZUSP). A. Epandrium, surstylus and cercus, left lateral view; arrow showing preapical protuberance on dorsal margin of cercus. B. Cerci, dorsal view (setation omitted on the left 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; black arrow showing triangular projection of vesica and red arrow showing claw-like projection of ventral margin of distipallus. 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.