Neoscutops annulatus, Ale-Rocha, Rosaly & Freitas, Geovânia, 2011

Ale-Rocha, Rosaly & Freitas, Geovânia, 2011, Revision of the Neotropical genus Neoscutops Malloch (Diptera: Periscelididae), Zootaxa 3016, pp. 1-28 : 4-6

publication ID	https://doi.org/ 10.5281/zenodo.200588
DOI	https://doi.org/10.5281/zenodo.6186702
persistent identifier	https://treatment.plazi.org/id/F95A87EE-FF8A-C202-AED3-CDBAFAF1FC64
treatment provided by	Plazi
scientific name	Neoscutops annulatus
status

Treatment

The peruvianus View in CoL Group

The peruvianus group, with 10 species, is characterized by the lower facial margin arched; clypeus prominent as a roundish convex sclerite; palpus long and quite rectangular; M1 slightly arched; base of Rs with strong sclerotization; A1+CuA2 shortened and straight; r-m crossvein placed beyond middle of upper section of cell dm. Male terminalia with pregenital sclerite (syntergosternite 7+8) narrow, reduced to a dorsolateral sclerotized stripe, free from tergite 6; epandrium only slightly convex; surstylus undifferentiated; cercus large, bearing numerous setulae along entire length; postgonites usually elongate, slightly upcurved apically; ejaculatory apodeme constricted in middle. In the female, sternite 8 displays several specific shapes of taxonomic value; tergite 8 small and narrow.

Geographical distribution: Brazil, Costa Rica, Ecuador, Peru.

Neoscutops annulatus sp. nov. ( Figs. 1–6 View FIGURES 1 – 6 , 51 View FIGURES 51 – 58 , 62 View FIGURES 62 – 71 )

Diagnosis. Frons and face shiny yellow except for brown area between bases of antennae and an oblique dark brown spot on lower corners of face; scape brown, pedicel brown with whitish-yellow dorsal spot; first flagellomere yellow; palpus dark yellow; scutum dark brown, with postpronotal lobe, lateral and postero-lateral margins pale brown; legs brown to pale brown, except for whitish-yellow tarsi with fifth tarsomeres pale brown and a median yellow ring on the mid and hind tibiae.

Description. Holotype male. Body: 3.6 mm. Wing: 2.7 mm. Thorax: 1.6 mm. Head ( Fig. 62 View FIGURES 62 – 71 ). Frons and face shiny yellow except for brown area between bases of antennae and an oblique dark brown spot on lower corners of face. Face with scattered, short, fine yellow setae. Parafacial yellow. Gena yellow with short, fine yellow setae, 1 long black seta below. Antenna: scape brown; pedicel brown with whitish-yellow dorsal spot and conspicuous dorsal setae; first flagellomere yellow, darker on dorsal edge, elongate-oval; arista sub-basal with basal part yellow and dark brown distally, with 11 dorsal and 5 long ventral rays. Mouthparts: proboscis pale brown; palpus dark yellow with distal margin darker, elongate, somewhat rectangular, about 3 times longer than wide, slightly rounded distally, with sparse short, fine brown setae; clypeus brown, bulged. Postcranium pale brown on upper portion, yellow on postgena, with whitish-yellow microtomentum and thin yellow setae, a band of denser microtomentum on lateral margin of eye. Eyes almost nude, interfacetal setae inconspicuous, few in number and very short. Setae: 1 lateral and 1 medial vertical pairs, of the same length; 1 orbital pair inserted on lower half of frons, shorter than vertical pairs; 1 postocellar pair, divergent, as long as orbital setae; ocellar triangle with several short thin setae and one slightly robust lateral pair; postocellar pair brown, remaining setae yellow.

Thorax. Scutum shiny, dark brown except postpronotal lobe, lateral and postero-lateral margins pale brown; clothed in dense fine yellow setae and with pale microtomentum on lateral margin. Scutellum and subscutellum pale brown; scutellum with dense pale microtomentum. Pleurae brown with dense pale microtomentum except for a shiny bare area that extends from lower half of anepisternum to upper half of katepisternum. Setae: 1 postpronotal, 2 notopleural, 1 postsutural supra-alar and 1 postalar short; 1 dorsocentral prescutellar and 2 lateral scutellar pairs, all robust and the same length; 1 katepisternal on posterior margin; prescutellar and scutellar setae yellow, remaining setae black.

Legs. Coxae brown; fore femur brown, mid and hind femora pale brown with apexes darker; tibiae dark brown, mid and hind tibiae with a yellow ring at middle; whitish-yellow tarsi with fifth tarsomeres pale brown. Femora with postero- and anteroventral series of short black spines, stronger on fore femur and slender on mid and hind femora; fore femur with one strong sub-basal posterior seta; mid tarsus with small black apical spines on ventral surface of tarsomeres 1–4. Apicoventral spine of mid tibia very short, inconspicuous.

Wing ( Fig. 51 View FIGURES 51 – 58 ) brown basally and slightly paler apically, dark brown on costal margin between R1 and R2+3; the longitudinal fold crosses the crossvein dm-cu in the middle.

Abdomen brown, clothed in dense red-brown microtomentum; coating setae brown, short, thin and scattered, longer laterally. Tergite 1+2 about 1/3 of length of abdomen and divided longitudinally by unsclerotized median line from base to close to distal margin; sternite 6 small ( Fig. 5 View FIGURES 1 – 6 ); tergite 6 free from syntergosternite 7+8. Terminalia: phallus exceptionally long, robust, broadened towards apex, mostly membranous and sclerotized apically ( Figs. 2, 3 View FIGURES 1 – 6 ); cercus large, subtriangular in anterior view ( Fig. 1 View FIGURES 1 – 6 ); postgonites long, upcurved posteriorly, with a dorsal projection near base, articulated with anterior margin of hypandrium on each side of phallus; ejaculatory apodeme well developed ( Fig. 4 View FIGURES 1 – 6 ); surstylus undifferentiated.

Female. Somewhat darker than male; scutellum the same color as scutum, remainder of body and appendages colored similarly to male. Terminalia ( Fig. 6 View FIGURES 1 – 6 ): syntergosternite 7 very narrow, slightly sclerotized ventrally; sternite 8 deeply concave on posterior margin ( Fig. 6 View FIGURES 1 – 6 ); cercus small.

Type material. Holotype 3 ( USNM). ECUADOR: Orellana, Lot # 1090 / Reserva Etnica Waorani / Onkone Gare Camp, 216.3 m / 2.viii.94, T.L. Erwin et al./ 0039'25.7" S, 7627'10.8" W. Condition of holotype: excellent, not dissected.

Paratypes. BRASIL: Amapá, Serra Lombard, Limão, 2.viii.1961, J. &. B. Bechyn cols. ( INPA). Rondônia, Guajará Mirim, Rio Ouro Preto, Bananal, 1058'23"S, 6405'39"W, 20–27.x.1995, Suspensa baixa terra firme, J. A. Rafael & A. L. Henriques, 3 ( INPA). Amazonas, Parque Nacional Jaú, 0154'65"S, 6135'23"W, 29.vii–08.viii. 2001, Rafael & Vidal, Ƥ ( INPA). Pará, São Geraldo do Araguaia, Serra das Andorinhas, Santa Cruz, S6o12'58.8", W48o26'1.6", 08–22.v.2001, Cerrado, Armadilha Suspensa, 1.6m, I.S. Gorayeb, E.M. Santos, N. Bittencourt, J.M.F. Ribeiro, Ƥ ( MPEG).

Distribution. Ecuador (Orellana), Brazil (Pará, Amazonas, Rondônia).

Etymology. From the Latin “annulus = ring, refers to the yellow ring on the mid and hind tibiae in the representatives of the species.

Variations: Some paratypes have the clypeus slightly paler, the palpus darker, and all femora brown.