Allotrichoma laterale

Stuke, J. H., 2022, Faunistic and taxonomic remarks on European Allotrichoma Becker, 1896 (Diptera: Ephydridae) with the description of a new species from Georgia, Russian Entomological Journal 31 (3), pp. 297-311 : 300-301

Allotrichoma laterale [Loew, 1860]

Figs 4 , 16.

Hecamede lateralis Loew, 1860: 13–14 ; type-locality: „Süditalien und Sicilien”; lectotype ♂, des. by Papp [1979] ( Germany, Berlin, Museum für Naturkunde der Humboldt-Universität [ Papp, 1979]).

= Allotrichoma pseudolaterale Raffone, 2001: 21–23 ; type-locality: „ Isola Lipari, Sorgente Lace, Terreno nudo” [ Italy]; holotype ♂ ( Italy, Venice, Museo Civico di Storia Naturale [ Raffone 2001]); syn.n.

MATERIAL EXAMINED: 945 ♂♂ from Croatia, Cyprus, Germany, France, Georgia, Greece, Jordan , Moroc, Portugal.

TAXONOMIC REMARK: Allotrichoma pseudolaterale was distinguished from A. laterale in the original description only by two characters: “ Allotrichoma (Allotrichoma) pseudolaterale n. sp., affine a A. (Allotrichoma) laterale (Loew, 1860) , differisce principalmente per i tarsi uniformemente gialli (grigi in A. laterale ), nonché per i caratteri genitali”. The colouration of the tarsi of A. laterale is variable and not suitable to distinguish any Allotrichoma species. The illustrations of the elongated cercus of A. pseudolaterale are within the variation of A. laterale using the right orientation. Therefore, A. pseudolaterale cannot be separated using the described characters. 4 ♂♂ paratypes (two of these with macerated terminalia) and 3 ♀♀ paratypes, all from the Museo Civico di Storia Naturale Venice, were examined and these showed no differences compared with A. laterale . A. pseudolaterale (syn.n.) is therefore proposed as a junior synonym to A. laterale (Loew, 1860) .

DISTRIBUTION: Allotrichoma laterale is the most common Allotrichoma species all over southern Europe and it is widely distributed in central Europe. The northern distribution of this species is marked by records from Britain at 52°N [ Gibbs, 2006], northern Germany at 53°N [ Cresson, 1929; Stuke, 2010], and Poland at 51° [ Krivosheina, Zatwarnicki, 1997]. Additionally, A. laterale is widespread across North Africa, the Arabian peninsula, Afghanistan, Turkey, Tadzhikistan, Turkmenistan, Uzbekistan [ Krivosheina, Zatwarnicki, 1997].

Figures

Figs 1–4. Epandrium, cercus, surstylus of European Allotrichoma, dorsal view (above) and lateral view (below): 1 — bezzii Becker, 1896; 2 — bifidum Papp, 1974; 3 — filiforme Becker, 1896; 4 — laterale (Loew, 1860); ce — cercus; ep — epandrium; pce — protruding part of cercus; su — surstylus. Рис. 1—12. Эпандрий, церки и сурстили европейских видов Allotrichoma, сверху (верхний рис.) и сбоку (ниЖний рис.): 1 — bezzii Becker, 1896; 2 — bifidum Papp, 1974; 3 — filiforme Becker, 1896; 4 — laterale (Loew, 1860); ce — церк; ep — Эпандрий; pce — выступаюЩаЯ часть церка; su — сурстиль.