Antrops microphthalmus (Richards) KITS & MARSHALL, 2013

KITS, JOEL H. & MARSHALL, STEPHEN A., 2013, <p class = " HeadingRunIn " align = " left "> <strong> Generic classification of the Archiborborinae (Diptera: Sphaeroceridae), with a revision of <em> Antrops </ em> Enderlein, <em> Coloantrops </ em> gen. nov., <em> Maculantrops </ em> gen. nov., <em> Photoantrops </ em> gen. nov., and <em> Poecilantrops </ em> gen. nov. </ strong> </ p>, Zootaxa 3704 (1), pp. 1-113 : 39

Antrops microphthalmus (Richards) , comb. nov.

(Figs. 49–51, 206)

Archiborborus (Huapia) microphthalma Richards 1931: 65

Description. Head blackish, interfrontal plates sometimes brown. Prementum and antenna dark brown, maxillary palp brown. Eye small, gena height about 1.5x eye height. Ocellar bristles about one ocellus width anterior to medial ocellus. One subvibrissal bristle about 0.6X length of vibrissa, anterior genal bristle about 0.5X length of vibrissa.

Thorax dark brown to blackish, covered with microtomentum except small ventral shiny spot on anepisternum. Halter whitish.

Legs yellowish to light brown, femora dark brown. First basotarsomere with a curved spur in males. Tibia 2 with 3 medial and 1 preapical anterodorsal, 2 medial posterodorsal, 1 preapical dorsal, 1 anteroventral, 1 posteroventral, and about 5 subapical bristles. Tibia 3 with rows of anterodorsal and posterodorsal, 1 strong anteroventral, and 3 ventroapical bristles.

Wing pale brown, crossveins paler but no distinct spots.

Abdomen with tergites and sternites dark brown and heavily sclerotized in both sexes, covered with microtomentum.

Male postabdomen: Sternite 5 wide, posterior margin with a thin posterior projection, no anterior apodeme (Fig. 51). Surstylus bilobed, lateral lobe pointed, medial lobe broad and rounded (Fig. 50). Pregonite large, mostly fused with postgonite. Postgonite with lobes barely distinguishable, anterior margin strongly projecting and rounded. Basiphallus with a short broad epiphallus and preepiphallus, both distant from distiphallus. Distiphallus without a distinct dorsal tube, ventrally with clear lateral sacs covered with spines (Fig. 49).

Female postabdomen: Tergites 6–7 and sternite 6–7 much wider than long, heavily sclerotized, covered with microtomentum. Tergites with 3 posterior strips, sternites with 2 posterior strips. Tergite 8 trapezoidal, weakly sclerotized medially, distal half covered with microtomentum. Epiproct broad, with short anterior arms, shiny, with 2 pairs of setae. Cerci short and broad. Sclerites of sternite 8 very broad, subrectangular, pinched medially, with microtomentum apically. Hypoproct very broad, subrectangular, covered with microtomentum. Spermathecae round, slightly longer than wide, with long apical invagination reaching base of spermatheca, sclerotized duct very short.

Type material. Holotype ♂: ARGENTINA: East end of Lake Nahuel Huapi, 17 Nov 1926, F.W. Edwards ( BMNH; not examined) . Paratype: ARGENTINA: Lake Gutierrez , Nov 1926, F.W. Edwards (1 ♂, BMNH; examined) .

Other specimens examined. ARGENTINA: Neuquén: Epu Lauquen Res., campground by Laguna Superior , 36°49'S 71°04'W, 1485 m, FIT, 9–10 Jan 2003, Ocampo & Smith (1 ♂, DEBU) ; Lolog , 7km N San Martín de Los Andes, 950 m, clearing, Nothofagus lenga, Malaise (wet), 23 Nov – 1 Dec 1989, S.A. Marshall (1 ♂, DEBU) ; Lolog, 7km N San Martín de Los Andes, Gentili property, 900 m, nr. pond, FIT, 23 Nov – 1 Dec 1989, S.A. Marshall (1 ♀, DEBU) ; as above but 950 m, clearing, Nothofagus, Masner malaise (1 ♂, DEBU) . CHILE: Biobío: Ñuble, Termas de Chillán , 36°55'S 71°26'W, 1850 m, 16 Feb 1998, N.E. Woodley (1 ♂, USNM) .

Comments. The examined paratype male has been dissected, and closely matches the genitalia of other examined specimens. The small eye in this species is very distinctive.