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

description: Regasilus apu sp. nov.
(Figs. 6–7)
Diagnosis. All femora black, mystacal macrosetae black in the upper face, and yellowish bellow; male terminalia wholly black, with the epandrium slightly angled downwards at the apex (Fig. 6B); the ejaculatory apodeme is medium sized, and the phallus quite narrow (Fig. 6D).
Description of male holotype (Fig. 6A). Lengths. Body: 17 mm; wing: 11 mm.
Head. Antenna black, scape and pedicel black setose, scape 1.5 times as long as pedicel; postpedicel similar in length to scape and pedicel together, about 10 times the length of first article of antennal stylus and twice the length of second article; face, frons and vertex golden tomentose; ocellar setae black, long, but no longer than length of scape and pedicel together; mystacal macrosetae black on upper face and yellowish bellow; proboscis white setose, labium and palpus yellowish setose; postocular macrosetae black above and yellowish bellow; occiput golden cinereous tomentose, white setose. Thorax. Dark brown, with golden tomentum covering pronotum and mesonotum, except for the dark paramedial and lateral mesonotal stripes; pleura golden tomentose on anterior half and cinereous tomentose posteriorly. Chaetotaxy: Pronotum yellowish setose, with two pairs of yellowish macrosetae on antepronotum; postpronotal lobe mostly yellowish setose, some black setae; mesonotum with black macrosetae, 2 notopleural, 1 supra-alar (alongside with several long setae) and 1 postalar; dorsocentral and acrostichal setae black, quite short anteriorly and becoming longer and bristly posterior to transverse suture; scutellar disc with black setae, 2 apical scutellar black macrosetae; uppermost portion of anepisternum with long erect yellowish setae; katepisternum, anepimeron and metanepisternum yellow setose; katatergal macrosetae yellowish. Wing. Base hyaline, microtrichia extending partially into m 2 and m 4; veins dark brown; R 2+3 slightly sinuous beyond R 4 and R 5 bifurcation; R 4 and R 5 bifurcation arising just before discal cell apex (M 2 base); crossvein r–m situated slightly anterior to middle of discal cell; R 5 sinuous; halter yellowish. Leg. Coxae black, golden cinereous tomentose; all femora shining black; 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, though femora bear some reddish to pale; mid femur with 5–6 anteroventral and 3 anterior; hind femur with 4 anterior, 10–11 anteroventral, 5–6 posteroventral, most of them pale and weak, and dorsally 1 subapical on each side; fore tibia with 1 dorsal, basal, 4 posterodorsal, and 3 posteroventral, quite long; mid tibia with 1 anterodorsal, 2 dorsal, 3 posterior, 1–2 posteroventral and 3 anteroventral; hind tibia with 1 dorsal, 2 anterodorsal, 2 posterodorsal and 2 anteroventral. Abdomen. Similar to R. aiapaec sp. nov., but sternite 8 bears a few yellowish macrosetae, besides the black ones. Terminalia (Figs. 6 B–C). Shining black; epandrium elongate, slightly curved downwards, black and yellowish setose, posterior margin with conspicuous spiny yellowish macrosetae present; hypandrium broad, yellowish long setose, excision at posterior margin subrectangular (Fig. 6F); gonocoxite subtriangular, apex pointed, internal margin with a notch and long black setae on external margin (Fig. 6E); gonostylus curved upwards; phallus quite narrow, curved upwards; ejaculatory apodeme medium sized (Fig. 6D).
Female (Fig. 7A). Similar to male, except terminalia (Fig. 7B); spermathecae coiled and strongly attenuated apically, comma shaped, situated almost on seventh abdominal segment; common duct subequal to length of arms of furca; expulsory ducts twice as long as capsular ducts and two thirds the length of common duct (Fig. 7C).
Etymology. A masculine noun in apposition, meaning “Lord” in Quechua; during Inca times and even nowadays, mountains are revered by Andean people as being inhabited by living spirits or “Apus”.
Holotype condition. Good. Detached terminalia placed in microvial with glycerin and pinned along with the specimen.
Distribution (Figure 20B). Peru; Marcapata, district in the province of Quispicanchi, Cuzco.
Type material. Holotype: PERU, CU[Cuzco], Quispicanchi, Marcapata, Limacpunco 2397 m 13°33’32.1”S, 70°54’56.8”O 12.x.2017 M. Rodríguez & L. Pérez / HOLOTYPE Ƌ Regasilus apu Sánchez, 2020 (MUSM). Paratype: PERU, CU. Quispicanchi, Marcapata, Ttio, 1919 m 13°31’39.1”S, 70°53’33.3”O 12.x.2017 M. Rodríguez & L. Pérez / PARATYPE ♀ Regasilus apu Sánchez, 2020 (MUSM).
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 227-229, DOI: 10.11646/zootaxa.4894.2.3, http://zenodo.org/record/4315667