Nephochaetopteryx utinguensis Tibana & Hime

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 : 77-81

Nephochaetopteryx utinguensis Tibana & Hime

( Fig. 36 )

Nephochaetopteryx utinguensis Tibana & Hime, 1985: 342–345 (descriptions of male, female and first instar larva). Type locality: Brazil, Pará, Belém. Other references: Pape (1996: 262; catalog); Mello-Patiu & Santos (2001: 312; redescription of female).

Material examined. Brazil. Acre: Rio Branco , 25.X–8.XI.1991, suspended trap at a height of 1.6 meters, leg. F. Ramos, A. Henriques, I. Gorayeb & N. Bittencourt (1 ♁, MPEG) . Amazonas: Balawa-u [= Barcelos], 01°48’25’’N 63°47’04’’W, 14.IX.1995, Malaise trap, leg. L.S. Aquino (1 ♁, INPA) ; Mamirauá , várzea [= seasonal floodplain for- est], 3°02’54.4’’S 64°51’02.1’’W, 19–21.IX.1997, Malaise trap, leg. I.S. Gorayeb & O. T. Silveira (4 ♁♁, MPEG) ; same data but 25–28.IX.1993 (2 ♁♁, MPEG) ; Marão, Rio Japurá, Ilha Jaraqui [= Jaraqui Island], 25.X.1988, leg. J. Dias (1 ♁, MPEG) . Maranhão: Ribamar Fiquene, Rio Tocantins [= Tocantins River], 05°56’29’’S 47°25’27’’W, 13.XII.2001, suspended trap, leg. J.A. Rafael, F.L. Oliveira & J. Vidal (1 ♁, INPA) . Pará: Belém, [State Park of] Utinga , VIII.1969, leg. H.S. Lopes (1 ♁, MNRJ) ; same data but APEG (1 ♁, MNRJ) ; Bragança, Mata do Lobão , 14–15.VIII.2008, butterfly trap baited with banana, leg. R. C.O. Santos (4 ♁♁, MPEG) . Rio de Janeiro: Imbaré , X.1967, leg. H. Ebert (1 ♁, MNRJ) . Roraima: Vilhena, Polonoroeste , 17.XII.1986, leg. C. Elias (1 ♁, DZUP) .

Redescription. Male. Length = 4.5–5.0 mm (n = 14).

Head. Fronto-orbital, parafacial plates, postocular strip, gena and postgena with golden microtomentum. Frontal vitta black. Six frontal setae. Palpus yellow.

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 four spines. Mid femur with two median setae and with a differentiated posteroventral seta. Wing hyaline; 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. Sternites 2 and 3 orange with a median brown strip and sternite 4 brown, with yellowish setulae and with marginal setae.

Terminalia. Sternite 5 brown, with long and short slender setae; cleft shallow, not passing the anterior margin of lobe; lobe rounded and with a tuft of short setulae; arms divergents, wider than long, with rounded apex ( Fig. 36E ). Cercus elongate, slightly curved dorsally in lateral view, without setulae on inner lateral margin and with long setae restricted to basal half ( Fig. 36A ). Cercal prongs separated with convergent tips in dorsal view ( Fig. 36B ). Surstylus almost triangular, with rounded apex, with setulae restricted to a wide cluster in basal half ( Fig. 36A ). Pregonite with wide base and distal half perpendicular to base, with anterior margin with granulations and with grooves, posterior margin with a row of setae ( Fig. 36C ). Postgonite shorter than pregonite with pointed apex curved anteriorly, with a long seta and small pointed setae on anterior margin ( Fig. 36D ). Basiphallus as long as distiphallus, curved dorsally ( Fig. 36F ). Distiphallus with dorsal margin convex, with ventral margin bearing two pointed projections ( Fig. 36F ). Vesica strongly angled in lateral view, with a prominent triangular projection in basal half with curved tip covered with microtrichia ( Fig. 36F ). Inner process of vesica longer than wide in lateral view ( Fig. 36F ). Lateral and median styli small, of about one-fourth width as the widest lateral wall of distiphallus, and both inserted at the level of vesica base ( Fig. 36F ).

Female. Terminalia as described by Mello-Patiu & Santos (2001, figs 27–28, 42).

Distribution. NEOTROPICAL—Brazil (Acre, Amazonas, Maranh„o, Pará, Rio de Janeiro).

Remarks. The holotype and six paratypes deposited in MNRJ were not examined because we had access to many non-type specimens with the diagnostic features of N. utinguensis , including some from the type locality.

This species is similar to N. marianae , from which it differs by the features mentioned in the remarks under that species. It is newly recorded for the Brazilian states of Acre, Amazonas, Maranh„o and Roraima.

Figures

FIGURE 36. Nephochaetopteryx utinguensis Tibana & Hime, 1985, male terminalia. Specimen from Bragança, 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; arrow showing granulations. D. Postgonite, left lateral view. E. Sternite 5, ventral view (setation omitted on the right side). F. Phallus, left lateral view; red arrow showing small triangular projection of vesica and black arrow showing pointed projection of ventral margin of distiphallus. 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.