Ctenodontina sagta Vieira, Landa & Rafael, 2017, sp. nov.
Creators: name: Vieira, Rodrigo
name: Landa, José Manuel Ayala
name: Rafael, José Albertino
Publisher: name: Zenodo
Year: 2017
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Asilidae
Ctenodontina
Ctenodontina sagta

description: Ctenodontina sagta sp. nov.
(Figs. 2, 10–23)
Diagnosis. Male hind femur with small apical swelling with several short black spines (Fig. 2); apical 4/5 of fore tibia with rows of yellowish and spiniform setae; tergites VI and VII with shiny silvery tomentum (Figs. 32, 33); epandrium with long macrosetae ventrally, apex claw shape (Figs. 36–38); subepandrial sclerite with two lobes laterally covered by tuft of small setae (Fig. 39); apex of gonostyle triangular, external region with a median keel and inner region of with spines (Figs. 40, 41).
Description. Male. Holotype. Head (Fig. 10). Antenna black, with black setae; vertex and ocellar tubercle black, golden tomentose; ocellar tubercle with 5 brown, long, proclinate ocellar setae; face and frons black, golden tomentose; lower facial margin silvery tomentose; mystacal macrosetae black and white; occiput golden tomentose; occipital setae black; postocular setae black; palpus brown with brown setae; proboscis black; labial setae yellowish. Thorax (Fig. 10). Antepronotum and postpronotum brown and golden tomentose; mesonotum brown tomentose with black paramedian stripe divided longitudinally by ocher tomentum; postsutural spots brown tomentose; mesonotum brown tomentose laterally, except anepimeron, katatergite and anatergite brown and grey tomentose; scutellum brown, silvery tomentose; pleuron brown tomentose, except anepimeron, katatergite and anatergite brown, silvery tomentose. Chaetotaxy: acrostichal setae black; 2 notopleural; 2 supra-alar, and 1postalar macroseta brown; black dorsocentral postsutural setae; no apical scutellar macrosetae; 1 short, brown, discal scutellar seta; no anatergal setae; katatergal setae whitish; posterior meron + metanepisternum with brown tuft of small setae on posterior margin. Wing (Fig. 12). Hyaline; veins brown; no costal dilatation; R4 and R5 bifurcation beyond level of discal cell apex; crossvein r-m placed slightly beyond middle level of discal cell; microtrichia on posterior margin arranged in a single plane; pale yellow halter. Legs (Figs. 2, 10). Fore and mid femur black anteriorly, reddish brown posteriorly; hind femur wholly black; fore and mid tibiae with basal 3/4 reddish brown and apical 1/4 black; hind tibia with basal 1/2 reddish yellow and apical 1/2 black anteriorly; fore and mid tarsi brown and hind tarsus dark brown (Fig. 10). Chaetotaxy: fore femur with black setae ventrally; mid femur with 3– 4 macrosetae anteriorly; hind femur with 1 black basal anterior macroseta, 1 black apical macroseta anteroventrally, 1 black preapical dorsoanterior and 1 black preapical dorsoposterior macroseta; hind femur with swelling on the ventral surface apically with several short black spines (Fig. 2); apical 4/5 of fore tibia with rows of yellowish and spiniform setae; fore tibia with 1 basal black seta dorsally. Apical 3/4 of fore tibia with black setae with yellow reflex anteriorly; mid tibia with 2 black setae and 3 yellow setae posteriorly; hind tibia with 1 basal black seta and 1 apical black seta dorsally; tarsomeres with black setae with yellow reflex anteriorly; empodium and pulvillus light brown; basal 1/4 of claws light brown and apical 3/4 black. Abdomen (Figs. 10, 11). Brown, silvery tomentose with yellow setae; tergite II with 5–6 yellow macrosetae laterolapically; tergite III with 4–5 yellow macrosetae laterolapically. Tergites VI and VII with shining silvery tomentum (Fig. 11). Apex of sternite VIII rounded with long macrosetae (Fig. 13). Terminalia (Figs. 14–20). Black. Epandrium with long macrosetae ventrally, apical 1/3 narrow, apex claw shape (Figs. 14–16); hypandrium narrow, with long setae laterally, medioapical region with concavity (Fig. 15); subepandrial sclerite with two lobes laterally covered by tuft of small setae (Fig. 17); apex of subepandrial sclerite rounded (Fig. 17); gonocoxite upward curved, apex pointed, apical 1/ 4 surrounded by diminute spines (Figs. 18, 19); apex of gonostyle triangular, external region with a median keel and inner region with spines (Figs. 18, 19); aedeagus with two prongs (Fig. 20); ejaculatory apodeme wide in lateral view (Fig. 20).
Lengths. Body: 14.5 mm; wing: 11.1 mm.
Holotype condition. Good. Detached wing mounted on microslides, terminalia placed in microvial with glycerin and pinned along with the specimen.
Variation. Ocellar tubercle with 2–5 black, long, proclinate ocellar setae; scutellum with erect setae; hind femur with 3 black anterior macrosetae; hind tibia with basal 2/3 reddish yellow and apical 1/3 black anteriorly.
Female (Figs. 21–23). Similar to male, except for body length: 16 mm; wing 12.1 mm; frons and pleuron brown tomentose; katatergal setae yellowish; halter stem light brown, capitulum reddish brown; hind femur with 3 black basal macrosetae anterior; hind femur without swelling; mid tibia with 2 black short setae; abdomen brown, silvery tomentose; tergites II–IV triangular, brown spot dorsally. Terminalia. Two oval sclerotized spermathecal capsules. Tergite VIII broadly expanded laterally (Figs. 22, 23); tergite IX+X membranous medially (Fig. 22); median sclerite at posterior end of furca (remnant of tergite IX) absent.
Etymology. sagta, a noun in apposition, which means "the beautiful" in Aymara language, refers to Salta, Argentina, type locality of the species.
Comments. C. sagta sp. nov. differ from other Ctenodontina species by the characters presented in the identification key and the combined characters of the terminalia, mainly the epandrium apex claw shape and gonocoxite upward curved, apex pointed.
Material examined. Holotype: ARG [ENTINA], Salta, Tartagal [22° 30’ S, 63° 50’W], Fritz col., xi.[19]71 / Holótipo Ctenodontina sagta (♂ INPA). Paratype: ARG [ENTINA], Salta, Pocitos [24° 47’ S, 65° 24’ W], Fritz col., i.[19]71 / Parátipo Ctenodontina sagta (1 ♂ INPA, 1 ♂ JMAC); same data as holotype (4 ♂ JMAC, 3 ♀ JMAC).
description: Published as part of Vieira, Rodrigo, Landa, José Manuel Ayala & Rafael, José Albertino, 2017, Ctenodontina Enderlein, 1914 (Diptera, Asilidae, Asilinae): new combinations, synonyms, new species and new records for Argentina, pp. 279-291 in Zootaxa 4216 (3) on pages 280-281, DOI: 10.5281/zenodo.231832