Allotrichoma sabroskyi
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Ordo: Diptera
Familia: Ephydridae
Genus: Allotrichoma
Name
Allotrichoma sabroskyi Mathis & Zatwarnicki, 2012 sp. n. – Wikispecies link – ZooBank link – Pensoft Profile
Description
This species is distinguished from congeners by the following combination of characters: Small shore flies, body length 1.40–1.75 mm. Head: Medial facial carina above facial prominence shallow; labella broad, fleshy, shorter than mediproboscis; clypeus microtomentose, usually gray.
Thorax: Presutural supra-alar seta present. Pleural area lacking stripes. Wing with costal vein ratio 0.33–0.36; M vein ratio 0.43–0.44. Legs blackish brown to black; midtibia bearing numerous, erect setae along dorsal surface.
Abdomen: Male 5th sternal process in lateral view (Fig. 55) moderately elongate, narrow, bearing 4–5 tuberculate setulae apically; 5th medial process in lateral view (Fig. 55) elongate, shallowly curved, bearing 7–8 setulae anteroapically. Male terminalia (Figs 51–54): Epandrium in posterior view (Fig. 51) ovately rounded on dorsal half, wider than high; epandrium in lateral view (Fig. 52) with anterior and posterior margins of dorsal half nearly straight and parallel sided; cercus robust, thick, in posterior view (Fig. 51) pointed dorsally, gradually broadened ventrally then rather abruptly curved laterally and ventrally as a slightly tapered, elongate process that bears numerous long setulae apically and along posterior margin; cercus in lateral view (Fig. 52) slightly curved, wider dorsally, ventral half nearly parallel sided, apex broadened and bearing setulae; surstyli in posterior view (Fig. 51) as parallel, narrow, elongate processes that bear setulae on apical portion, apex narrowly rounded; surstylus in lateral view (Fig. 52) shallowly curved, basal half slightly tapered, apical half almost parallel sided, apical portion bearing short setulae, apex tapered to narrow point; aedeagus in ventral view (Fig. 53) elongate, moderately narrowly ovate, tapered apically, in lateral view (Fig. 54) narrowly elongate, somewhat lunate; phallapodeme in lateral view (Fig. 54) very narrowly triangular, digitiform keel shorter than length, pointed; gonite in ventral view (Fig. 53) bar-like, very slightly wider basally, apex with short, lateral process, apex bearing setula, in lateral view (Fig. 54) wide basally, gently curved, tapered to apical point, with a subapical, short process that bears a setula.
Type material
The holotype male is labeled “USA. N[ew]M[exico]. Sandoval: LaCueva(Hhwys 126&4; 35°52'N, 106°38.4'W; 2342 m), 6 Aug 2007,D.&W.N.Mathis/ HOLOTYPE ♂ Allotrichoma sabroskyi W. Mathis & T. Zatwarnicki USNM [red]/USNM ENT 00117960 [plastic bar code label].” The holotype is double mounted (minuten in a block of plastic elastomer), is in excellent condition, and is deposited in the USNM. Forty-five paratypes (44♂, 1♀; USNM) bear the same locality label as the holotype.
Type locality
United States. New Mexico. Sandoval: La Cueva (Junction of Highways 126 and 4; 35°52'N, 106°38.4'W; 2342 m).
Other specimens examined from the New World
CANADA. BRITISH COLUMBIA. Wasa Lake (49°47.4'N, 115°44.1'W), 17 Jul 1974, P. H. Arnaud, Jr. (1♂, 1♀; CAS).
UNITED STATES. ARIZONA. Coconino: Flagstaff (35°N, 111°44.3'W), 10 Jun 1909 (1♂; USNM); Oak Creek (18 km N Sedona; 35°N, 111°44.3'W), 13 Apr 2003, W. N. Mathis, T. Zatwarnicki (9♂, 5♀; USNM).
CALIFORNIA. Amador: Buena Vista (38°17.4'N, 120°54.8'W), F. R. Cole (1♂; USNM). Santa Clara: San Jose (37°20.4'N, 121°53.7'W), 8 Sep 1949, L. W. Quate (2♀; USNM).
COLORADO. Archuleta: Pagosa Springs (37°15.8'N, 107°00.7'W), 27 May 1969, W. W. Wirth (2♂; USNM). Dolores: Cahone (9 km N, Dolores River; 37°38.9'N, 108°44.1'W; 1955 m), 3 Aug 2007, D. and W. N. Mathis (2♂; USNM).
KANSAS. Rooks: Webster Dam (39°24.5'N, 99°25.5'W), 1 Sep 1961, D. L. Deonier (1♂; USNM).
MONTANA. Lake: Big Fork (13 km NE; 47°50'N, 113°53'W), 9 Aug 1969, B. A. Foote (2♂; USNM); Dayton (47°52'N, 114°16.7'W), 13 Jul 1935, A. L. Melander (1♂; USNM).
NEW MEXICO. Sandoval: Valles Caldera National Preserve, Alamo Canyon (middle pond; 35°54.9'N, 106°35'W; 2645 m), 4 Aug 2008, D. and W. N. Mathis (1♂; USNM). Taos: Rio Grande (36°18.3'N, 105°46.1'W), 6 Jul 1953, W. W. Wirth (1♂; USNM).
OREGON. Benton: Corvallis, Dixon Creek (44°34.5'N, 123°15.2'W), 24 Aug 1974, W. N. Mathis (1♂; USNM).
UTAH. Carbon: Deadman Canyon (16 km NE Price; 39°41.7'N, 110°44'W; 2055 m), 19 Aug 2009, T. Zatwarnicki (1♂; USNM). Kane: Kanab (37°02.8'N, 112°31.6'W), 14 Jul 1948, G. F. Knowlton (1♂; USNM). Salt Lake: Butterfield Canyon (40°29.2'N, 112°08.2'W; 1890 m), 13 Aug 2008, D. and W. N. Mathis (1♂; USNM). San Juan: Johnson Canyon (21 km W Blanding: 37°47.6'N, 109°30.7'W; 2335 m), 2 Aug 2007, D. and W. N. Mathis (1♂; USNM).
Distribution
(Fig. 56) Nearctic: Canada (British Columbia), United States (Arizona, California, Colorado, Kansas, Montana, New Mexico, Oregon, Utah).
Etymology
The species epithet, sabroskyi, is a genitive patronym to honor Curtis W. Sabrosky. Curt was our mentor and friend and always had time to assist and respond to our numerous questions.
Original Description
- Mathis, W; Zatwarnicki, T; 2012: Revision of New World Species of the Shore-fly Subgenus Allotrichoma Becker of the Genus Allotrichoma with Description of the Subgenus Neotrichoma (Diptera, Ephydridae, Hecamedini) ZooKeys, 161: 1-101. doi
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