Nephochaetopteryx tembe, 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 : 71-73

Nephochaetopteryx tembe sp. nov.

( Fig. 33 )

Type material. HOLOTYPE ♁ ( MPEG): Brasil Pará / Paragominas / Faz. [= Farm] Cachoeira / do Rio Vermelho / 15 a [= to] 18.I.1991 [printed and handwritten on rectangular white label] // Brasil Pará / R. B. Neto [printed on rectangular white label] // Armadilha Malaise [= Malaise trap] [printed on rectangular white label]. [The holotype lacks its right fore leg; its abdomen and terminalia are cleared and preserved in glycerin in a microvial pinned beneath the specimen.]

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

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

Thorax. Chaetotaxy: dorsocentrals 2+4 (first two weak); intra-alars 2+3; supra-alars 1+3, notopleurals 1 subprimary; anepisternals 6; merals 5. Ctenidium consisting of five 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 of dorsal and lateral surfaces. Sternites 2 to 4 yellow with a median brown strip, covered with yellowish setulae and with marginal setae.

Terminalia. Sternite 5 brown, wider than long, with small setae restricted to posterior half; cleft shallow, not surpassing the anterior margin of lobe; lobe reduced, quadrate and with a tuft of short setulae; arms divergent, glossiform ( Fig. 33E ). Cercus straight in lateral view, with a small apical rounded projection bent ventrally ( Fig. 33A ). Cerci elongate with cercal prongs adjacent; lateral margin slightly ondulate and tip quadrate in dorsal view ( Fig. 33B ). Cercus without setulae on outer and apical margins, covered with many long and small setae ( Figs 33 A–B). Surstylus conical, with setulae restricted to basal portion, apical portion bearing many short setae ( Fig. 33A ). Pregonite glossiform, shorter than postgonite, slight curved anteriorly, with small pointed setae on posterior margin ( Fig. 33C ). Postgonite straight, with distal half tapering distally, with a long seta and some small pointed setae on anterior margin ( Fig. 33D ). Basiphallus elongate, curved dorsally ( Fig. 33F ). Distiphallus with posterior margin angled distally, with apical margin rounded in lateral view ( Fig. 33F ). Lateral wall of distiphallus with grooves posteriorly, with a cluster of microtrichia anteriorly; ventral margin rounded ( Fig. 33F ). Vesica elongate and angled, with a middle triangular projection and with apex bearing small spines ( Fig. 33F ). Base of vesica elongate, with spine-like processes ( Fig. 33F ). Lateral and median styli elongate, about half as long as the widest portion of lateral wall of distiphallus, and both inserted medially in distal portion of distiphallus ( Fig. 33F ).

Female. Unknown.

Etymology. The specific epithet “ tembe ” is a noun in apposition derived from the Tembé Indian tribe that inhabits the region of Paragominas, the type locality of the new species.

Distribution. NEOTROPICAL—Brazil (Pará).

Remarks. This species can be easily distinguished from the other species in the genus by the reduced and rectangular lobe of male sternite 5 and by the adjacent cercal prongs.

Figures

FIGURE 33. Nephochaetopteryx tembe sp. nov., male terminalia. Holotype from Paragominas, Pará, Brazil (MPEG).A. Epandrium, surstylus and cercus, left lateral view. B. Cerci, dorsal view (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 left 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.