Regasilus inti, Sánchez, 2020

Sánchez, Pável, 2020, Eight new species of Regasilus Curran, 1931 (Diptera: Asilidae: Asilinae) from Peru, Zootaxa 4894 (2), pp. 221-246 : 236-238

publication ID

https://doi.org/ 10.11646/zootaxa.4894.2.3

publication LSID

lsid:zoobank.org:pub:0445D812-2DA7-4BAE-97AC-BD91F74BE4AF

DOI

https://doi.org/10.5281/zenodo.4327243

persistent identifier

https://treatment.plazi.org/id/03AA87F0-2C1C-DF06-FF09-82A86684FCDE

treatment provided by

Plazi

scientific name

Regasilus inti
status

sp. nov.

Regasilus inti View in CoL sp. nov.

( Figs. 14–15 View FIGURE 14 View FIGURE 15 )

Diagnosis. A species almost fully covered with golden tomentum; femora black. Unlike its congeners, in this species the antepronotal macrosetae are stout and black. Besides, in males, the ejaculatory apodeme is quite short ( Fig. 14D View FIGURE 14 ), and the posterior excision of hypandrium is very deep ( Fig. 14F View FIGURE 14 ). In the female genitalia, the common duct is long, though not as long as the arms of furca ( Fig. 15C View FIGURE 15 ).

Description of male holotype. ( Fig. 14A View FIGURE 14 ). Lengths. Body: 16 mm; wing: 11 mm.

Head. Antenna black, scape and pedicel black setose ventrally, yellowish dorsally, scape about twice 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, no 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 tomentose, yellowish setose. Thorax. Dark brown, predominantly golden tomentose, except for silver tomentum diffused on posterior area of pleura, alongside the dark paramedial and lateral stripes on mesonotum. Chaetotaxy: Pronotum yellowish setose with 2–3 pairs of black macrosetae on antepronotum; postpronotal lobe with black and yellowish setae; mesonotum with black macrosetae, 2 notopleural, 2 supra-alar (alongside several long setae) and 2 postalar; dorsocentral and acrostichal setae black, short anteriorly and becoming longer and bristly posterior to transverse suture; scutellar disc with black and yellowish setae, relatively short, 2 apical scutellar black macrosetae; uppermost portion of anepisternum black and yellowish setose; katepisternum and anepimeron yellowish setose; katatergal macrosetae yellowish. Wing. Similar to R. apu sp. nov., halter yellowish. Leg. Coxae black, golden tomentose; all femora shining black; tibiae reddish brown; first tarsomeres concolorous with tibiae, then darkening towards the apex; claws and empodia dark brown, pulvilli yellowish. Chaetotaxy: Coxae and femora yellowish setose; femora and tibiae mainly with black macrosetae, absent on fore femur, although a stout dorsal black setae is present; mid femur with 5–6 macrosetae anteroventrally and 3 anteriorly; hind femur with 4 anterior, 10–11 anteroventral, 5–6 posteroventral, some of them weak, and dorsally 1 subapical on each side; fore tibia with 1 dorsal, basal, 4–5 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, 3 posterodorsal, 3 anterodorsal and 2 anteroventral. Abdomen. Dark brown, almost fully covered with golden tomentum, yellowish setose, setae longer on sides; sternites also golden tomentose and yellowish setose, except on eighth sternite, with an apical band of yellowish macrosetae. Terminalia ( Fig. 14 View FIGURE 14 B–C). Shining black; epandrium broad, subrectangular, mostly yellowish setose, except for some basal black setae dorsally; excision at posterior margin of hypandrium very deep, cup-like ( Fig. 14F View FIGURE 14 ); gonocoxite subtriangular, yellowish setose on external margin ( Fig. 14E View FIGURE 14 ); gonostylus slightly curved upwards; phallus somewhat flattened laterally, curving slightly upwards at apical third, ejaculatory apodeme quite short ( Fig. 14D View FIGURE 14 ).

Female ( Fig. 15A View FIGURE 15 ). Similar to male, except terminalia ( Fig. 15B View FIGURE 15 ); spermathecae strongly attenuated apically, comma-shaped, situated on eighth abdominal segment; common duct about half the length of arms of furca, capsular ducts twice the length of expulsory ducts and one third the length of common duct ( Fig. 15C View FIGURE 15 ).

Etymology. A masculine noun in apposition, given to Inti, the Quechua name for the sun, and the main god of the Inca Empire.

Holotype condition. Good. Detached terminalia placed in microvial with glycerin and pinned along with the specimen. As well as detached right wing.

Distribution ( Fig. 20A View FIGURE 20 ). 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 GoogleMaps / HOLOTYPE Ƌ Regasilus inti Sánchez, 2020 ( MUSM) .

Paratypes: Same data as holotype (11Ƌ, 2♀) ( MUSM) .

Variation: In some specimens, the fork of R 4+5 has a stump vein, sometimes poorly defined.

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Diptera

Family

Asilidae

Genus

Regasilus

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