Antrops bucki, KITS & MARSHALL, 2013

KITS, JOEL H. & MARSHALL, STEPHEN A., 2013, Generic classification of the Archiborborinae (Diptera: Sphaeroceridae), with a revision of Antrops Enderlein, Coloantrops gen. nov., Maculantrops gen. nov., Photoantrops gen. nov., and Poecilantrops gen. nov. , Zootaxa 3704 (1), pp. 1-113 : 24

publication ID	https://doi.org/ 10.11646/zootaxa.3704.1.1
publication LSID	lsid:zoobank.org:pub:341ED5F6-2DCA-4E73-83D6-389DF0DD347F
DOI	https://doi.org/10.5281/zenodo.6509160
persistent identifier	https://treatment.plazi.org/id/03A18780-C65F-FF9B-0DD3-DAEAFC7CFEAF
treatment provided by	Felipe
scientific name	Antrops bucki
status	sp. nov.

Treatment

Antrops bucki View in CoL sp. nov.

( Figs. 27, 30 View FIGURES 25–30 , 199 View FIGURES 195–203 )

Description. Head black, face, clypeus, and prementum dark brown, antenna orangish brown with base of pedicel black. Entirely covered with microtomentum. Gena about 0.8X eye height. Ocellar bristles just anterior to median ocellus. Anterior genal bristle and subvibrissal bristle about 0.3X length of vibrissa.

Thorax black. Mostly covered with microtomentum, ventromedial shiny spot on anepisternum about 0.3X height and length of sclerite. Presutural and anterior postsutural dorsocentral bristles very short in holotype. Halter well developed, whitish with brown below knob.

Legs black, fore coxa, trochanters, joints, and tarsi dark reddish brown. Fore basotarsomere with a small yellow spur in holotype. Mid tibia with row of anterodorsal, 1 medial posterodorsal, 1 anteroventral, 2 posteroventral, 5 subapical bristles. Mid basotarsomere with a strong basal ventral bristle. Hind tibia with 1 anteroventral, 3 ventroapical bristles. Hind basotarsomere with 2 strong basal anteroventral bristles.

Wing reduced, about length of thorax, all veins recognizable. Wing brown with dark brown veins, crossveins rm and dm-cu and distal part of vein R 4+5 whitish.

Abdominal tergites black, heavily sclerotized, covered with microtomentum in both sexes. Sternites black, heavily sclerotized in male, moderately sclerotized in female, covered with microtomentum in both sexes. Sternites slightly wider than long in male, longer than wide in females.

Male postabdomen: Sternite 5 with curved lateral margins, widest at about one-third length, anterior apodeme broad, about as long as external portion ( Fig. 30 View FIGURES 25–30 ). Surstylus long, narrow. Pregonite small, distinct. Postgonite with lobes well separated, anterior lobe rounded, posterior lobe somewhat pointed. Basiphallus with moderately long, very broad epiphallus, narrow preepiphallus. Distiphallus with curved spinose dorsal tube flanked by one spikelike sclerite, ventral sacs fairly well developed, covered with small spinules ( Fig. 27 View FIGURES 25–30 ).

Female unknown.

Type material. Holotype ♂: ECUADOR: Napo / Pichincha: Papallacta Pass , 0°19'15"S 78°11'51"W, 4200 m, páramo, yellow pans, 29 Apr–11 May 2002, Marshall & Buck, debu00202081 ( QCAZ). GoogleMaps

Comments. This species resembles a brachypterous version of A. fuliginosus sp. nov. but differs in the form of the genitalia as well as the characters given in the key. The two strong bristles on the hind basotarsomere are unique among the Archiborborinae . The area around the Papallacta pass has been quite well collected for Sphaeroceridae , but only a single specimen of this species is known. This may be due to the very high altitude at which the type specimen was collected, as very few specimens were examined from 4200 m. This species is named to honour Matthias Buck, co-collector of the holotype and an accomplished taxonomist.