Alloxysta basimacula

Alloxysta basimacula (Cameron, 1886)

Figs 2.6, 4.5

Allotria basimacula Cameron, 1886: 87. Type: deposited in BMNH (examined).

Dilyta basimacula – Kieffer 1900: 114.

Alloxysta (Alloxysta) basimacula – Dalla Torre & Kieffer 1902: 38.

Alloxysta basimacula – Andrews 1978: 78.

Alloxysta basimacula is mainly characterized by a completely open radial cell that is 3.0 times as long as wide (Fig. 4.5); the presence of pronotal carinae; the absence of propodeal carinae; and antenna with rhinaria beginning on F4, F1 longer than pedicel and subequal to F2, F2 longer than F3, and F3 shorter than F4 (Fig. 2.6). It is similar to A. brachycera, but can be differentiated by the F1–F2 proportion (F1 is subequal to F 2 in A. basimacula (Fig. 2.6), but longer than F 2 in A. brachycera (Fig. 2.7)) and the size of the radial cell (3.0 times as long as wide in A. basimacula (Fig. 4.5) but 2.7 times in A. brachycera (Fig. 4.6)).

Lectotype

UNITED KINGDOM: Scotland: ♀ [Lectotype (round label with blue margin)], [Mugdock, Glasgow, basimacula] (handwritten), [Cameron 96 76. Mugdoch], [Lectotype ♀ Allotria basimacula C. det. J. Quinlan, 1973] (handwritten), [B.M. TYPE HYM. 7.120], [Alloxysta basimacula (Cameron, 1886) det. M. Ferrer-Suay 2012] (BMNH B.M. Type Hym. 7.120).

Additional specimens (10 ♀♀)

GERMANY: 1 ♀ [Schwarzwald, Todtmoos environs, 6 Aug. 1984, L. Masner, screen sweeping]; 4 ♀♀ [C-235, Schwarzwald, Todtmoos environs, 6 Aug. 1984, L. Masner, screen sweeping] (CNCI C-235).

JAPAN: 2 ♀♀ [Hokkaido, Sapporo, Jozankei, 350 m, Aug. 1989, K. Maeto and M. Sharkey, MT] (CNCI C-203); 1 ♀ [Hokkaido, Shibetsu-Rubesu, E. slope of Mt. Shari, 43°45′ N, 144°45′ E, 17 Aug. 1996, 700 m, L. Masner, sweep] (CNCI C-164).

SWEDEN: 2 ♀♀ [Lappland, Riksgränsen, 500 m, 2 Aug. 1960, W.R.M. Mason] (CNCI C-311).

Palaearctic.

Certain records: Scotland (Cameron 1886: 87–88; 1889: 58).

New records: Germany, Japan and Sweden.