Allotrichoma schumanni
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Ordo: Diptera
Familia: Ephydridae
Genus: Allotrichoma
Name
Allotrichoma schumanni Papp – Wikispecies link – Pensoft Profile
- Allotrichoma laterale of authors, not Loew 1860[1] [misidentification in part]. Becker 1896[2]: 121 [generic combination]. Williston 1897[3]: 4 [compared with Allotrichoma abdominale Williston]. Cresson 1942[4]: 108 [list, west coast of United States]. Wirth and Stone 1956[5]: 467 [key]. Wirth 1965[6]: 736 [Nearctic catalog, in part]. Cole 1969[7]: 397 [list]. Mathis and Zatwarnicki 1995[8]: 151-152 [world catalog, in part].
- Allotrichoma schumanni Papp 1974[9]: 405 [Hungary. Gyón; HT ♂, HNHM]. Mathis and Zatwarnicki 1995[8]: 153 [world catalog].
Description
This species is distinguished from congeners by the following combination of characters: Small to moderately small shore flies, body length 1.40–2.00 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 0.30–0.33; M vein ratio 0.37–0.46. Legs blackish brown to black; midtibia bearing numerous, erect setae along dorsal surface.
Abdomen: Male 5th sternal flap in lateral view (Fig. 61) moderately and irregularly elongate, bearing several, tuberculate setulae apically; 5th medial process in lateral view (Fig. 61) elongate, conspicuously curved, C-shaped, bearing 5–6 setulae anteroapically. Male terminalia (Figs 57–60): Epandrium in posterior view (Fig. 57) like an inverted, laterally rounded, almost oval U; epandrium in lateral view (Fig. 58) relatively narrow dorsally, becoming wider ventrally, slightly projected posteroventrally; cercus in lateral view (Fig. 58) essentially straight, wide dorsally, than narrowed but very gradually becoming wider ventrally, as wide subapically as dorsal width, then tapered more abruptly to narrowly rounded apex, apex bearing long and apically curved setulae especially evident on ventral margin; cercus in posterior view (Fig. 57) as a elongate, somewhat pendulous, ventrally projected process, gradually becoming wider ventrally, apex truncate to very shallowly emarginate at an oblique angle, apex slightly longer laterally than medially, apex bearing numerous, very long setulae; surstyli (ventral extensions of epandrium) in posterior view as parallel, narrow processes that bear setulae on apex, apex not broadened or curved; surstylus in lateral view narrow, elongate, conspicuously curved, apical portion not expanded, bearing setulae apically; aedeagus in ventral view (Fig. 59) elongate, narrowly ovate, slightly tapered apically, in lateral view (Fig. 60) elongate, shallowly and narrowly lunate; phallapodeme in lateral view (Fig. 60) narrowly triangular, keel shorter than length, almost digitiform; gonite in ventral view (Fig. 59) somewhat bar-like, lateral margin very shallowly concave, with short, subapical, medial process, apex of process bearing a setula, and a short, apical process that likewise bears a short setula; gonite in lateral view (Fig. 60) wide basally, gently curved and tapered toward apex, with a subapical, short process that bears a setula and an apical setula.
Type material
The holotype male is labeled “Gyón [Hungary] Kertész [handwritten] on the reverse: “1904. VII. 8” [on reverse]/Allotrichoma n. sp. det. Becker [“Allotrichoma n. sp.” handwritten]/Holotypus Allotrichoma schumanni ♂ L. Papp [Holotypus red; species name handwritten; margin of label red].” The holotype is double mounted, is in good condition, and is deposited in the HNHM.
Type locality
Hungary. Gyón (47°11'N, 19°19'E).
Other specimens examined from the New World
UNITED STATES. COLORADO. Archuleta: Pagosa Springs (37°15.8'N, 107°00.7'W), 27 May 1969, W. W. Wirth (1♂, 4♀; USNM). Boulder: Middle Boulder Creek (16 km W Boulder; 40°00.3'N, 105°24.4'W; 2280 m), 8 Aug 1972, P. H. Arnaud, Jr. (6♂, 8♀; CAS, USNM).
Distribution
(Fig. 62) Nearctic: United States (Colorado). Palearctic: Belgium, Czech Republic, Hungary, Italy, Poland, Switzerland.
Taxon Treatment
- 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
Other References
- ↑ Loew H (1860) Neue Beiträge zur Kenntniss der Dipteren. Siebenter Beitrag. Die Europaeischen Ephydrinidae und die bisher in Schlesien beobachteten Arten derselben. Programm der Königlichen Realschule zu Meseritz 1860, 46 pp.
- ↑ Becker T (1896) Dipterologische Studien IV. Ephydridae. Berliner Entomologische Zeitschrift 41 (2): 91-276.
- ↑ Williston S (1897) Diptera Brasiliana. Part IV. Kansas University Quarterly series A, 6: 1-12.
- ↑ Cresson E (1942) Synopses of North American Ephydridae (Diptera) I. The subfamily Psilopinae, with descriptions of new species. Transactions of the American Entomological Society 68: 101-128.
- ↑ Wirth W, Stone A (1956) Chapter 14. Aquatic Diptera. Pp. 372–482. In: Usinger RL (Ed) Aquatic insects of California. 508+x pp. University of California Press, Berkeley.
- ↑ Wirth W (1965) Ephydridae. Pp. 734–759. In: Stone A, et al. (Eds) A catalog of the Diptera of America north of Mexico. Handbook, 276: 1696 pp. U.S. Department of Agriculture, Washington, D.C.
- ↑ Cole F, Schlinger E (1969) The flies of western North America. 693+xi pp. University of California Press, Berkeley, Los Angeles, and London.
- ↑ 8.0 8.1 Mathis W, Zatwarnicki T (1995). A world catalog of the shore flies (Diptera: Ephydridae). Memoirs on Entomology, International 4: vi+423 pp.
- ↑ Papp L (1974) New or little known species of Ephydridae and Sphaeroceridae from Hungary (Diptera: Acalyptratae). Acta Zoologica Academiae Scientiarum Hungaricae 20(3–4): 403-409.
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