Regasilus supay Sánchez 2020, sp. nov.
Creators: name: Sánchez, Pável
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Asilidae
Regasilus
Regasilus supay

description: Regasilus supay sp. nov.
(Figs. 16–17)
Regasilus strigaria: Lamas, 1972: 314 (in part; misidentification).
Diagnosis. Red thorax and femora, the latter, as in R. strigarius, black ventrally, though only 10–12 anteroventral macrosetae on the hind pair, besides the scutellar disc is whitish setose. In males the terminalia is red (Figs. 16 B–C), and the phallus strongly flattened laterally, broader on its posterior half (Fig. 16D).
Description of male holotype. (Fig. 16A). Lengths. Body: 16 mm; wing: 10 mm.
Head. Antenna black, scape and pedicel black setose ventrally and whitish dorsally, scape 1.5 times the length of pedicel; postpedicel similar in length to scape and pedicel together, about 10 times as long as first article of antennal stylus and twice the length of second article; face, frons and vertex golden cinereous tomentose; ocellar setae black, barely longer than length of scape and pedicel together; mystacal macrosetae black in the upper face, yellowish bellow; proboscis, labium and palpus yellowish setose; postocular macrosetae black above and yellowish bellow; occiput golden cinereous tomentose, yellowish setose. Thorax. Red, golden tomentose except the dark paramedial and lateral mesonotal stripes, and the pleural tomentum that becomes mostly cinereous posteriorly. Chaetotaxy: Pronotum yellowish setose, some pale macrosetae on antepronotum; mesonotum with black macrosetae, 2 notopleural, 1 supra-alar (alongside with some black setae) and 1 postalar; dorsocentral and acrostichal setae black, short anteriorly and becoming longer and bristly posterior to transverse suture; scutellar disc white setose, 2 apical scutellar black macrosetae; uppermost portion of anepisternum black setose; katepisternum and anepimeron yellowish setose; katatergal macrosetae black. Wing. Similar to R. apu sp. nov.; halter yellowish. Leg. Coxae black, golden tomentose; all femora red, black ventrally; tibiae reddish brown with dark apex; tarsi, empodia and claws dark; pulvilli yellowish. Chaetotaxy: Coxae and femora yellowish setose; femora and tibiae mainly with black macrosetae; mid femur with 5–6 anteroventral and 3 anterior; hind femur with 4 anterior, 10–12 anteroventral, 5–6 posteroventral, most of them pale and weak, and dorsally a subapical black macroseta on each side; fore tibia with 1 dorsal, basal, 4 posterodorsal, and 3 posteroventral, quite long; mid tibia with 1 anterodorsal, 3 dorsal, 3 posterior, 1–2 posteroventral and 3 anteroventral; hind tibia with 1 dorsal, 3 anterodorsal, 3 posterodorsal and 2 anteroventral. Abdomen. Dark brown, subshining, golden cinereous tomentose on sides and posterior margins of tergites, yellowish setose, setae longer laterally; sternites golden cinereous tomentose, yellowish setose, except sternite 8, with an apical band of long black macrosetae. Terminalia (Figs. 16 B–C). Red; epandrium elongate, medially attenuated and broad at apex, black setose basally and yellowish posteriorly; hypandrium broad, yellowish setose, excision at posterior margin u-like (Fig. 16 F); gonocoxite subtriangular, with blunt apex and yellowish long setae on external margin (Fig. 16E); gonostylus curved upwards, visible on lateral view; phallus strongly flattened laterally, broader on its posterior half, curving upwards at apex, ejaculatory apodeme wide and large in lateral view, extending to seventh segment of abdomen (Fig. 16D).
Female (Fig. 17A). Similar to male, except terminalia (Fig. 17B); spermathecae attenuated apically, coiled, situated almost on seventh abdominal segment; common duct smooth, thin and long, though shorter than arms of furca; expulsory ducts about 1.7 times the length of capsular ducts and subequal to length of common duct (Fig. 17C).
Etymology. A masculine noun in apposition, given to Supay, a prehispanic god of the Inca empire, known as the god of death and lord of the underworld.
Holotype condition. Good. Detached terminalia placed in microvial with glycerin and pinned along with the specimen.
Distribution (Fig. 20B). Peru; Huancabamba and Ayabaca, both provinces in the Department of Piura.
Type material. Holotype. PERU, PI [Piura], Huancabamba, Canchaque, Agua Blanca 05°20’12.7”S, 79°33’37.4”W, 11-15.viii.2018, 2168 m, trampa de luz [light trap], D. Silva leg. / HOLOTYPE Ƌ Regasilus supay Sánchez, 2020 (MUSM). Paratypes: Same data as holotype (5Ƌ, 4♀); PERU, PI, Huancabamba, Canchaque, Agua Blanca 05°20’13”S, 79°33’40”W, 08.viii.2018, 2219 m, trampa de luz, D. Silva leg./ Paratype (1 Ƌ, 1 ♀) Regasilus supay Sánchez, 2020 (MUSM); Ayavaca [=Ayabaca, 04°38’22”S, 79°42’53”W], Piura, PERU, 2715 m, 27.ix.[19]55 Coll: F. Blancas/ MHN 4610/ Regasilus sp. G. Lamas M. det. [19]71 / Paratype Ƌ Regasilus supay Sánchez, 2020 (MUSM).
Variation. In some males, the apical band of macrosetae on sternite 8 is yellowish, and only a few black macrosetae are present. One specimen has the right wing with a stump vein on fork of R 4+5.
description: Published as part of Sánchez, Pável, 2020, Eight new species of Regasilus Curran, 1931 (Diptera: Asilidae: Asilinae) from Peru, pp. 221-246 in Zootaxa 4894 (2) on pages 239-241, DOI: 10.11646/zootaxa.4894.2.3, http://zenodo.org/record/4315667