Alloxysta nigrita ( Thomson, 1862 )

Ferrer-Suay, Mar, Selfa, Jesús & Pujade-Villar, Juli, 2018, Palaearctic species of Charipinae (Hymenoptera, Figitidae): two new species, synthesis and identification key, European Journal of Taxonomy 427, pp. 1-110 : 53-54

Alloxysta nigrita ( Thomson, 1862)

Figs 2.30, 5.2

Allotria nigrita Thomson, 1862: 409 . Type: deposited in MZLU (examined).

Dilyta nigrita – Kieffer 1900: 114.

Alloxysta (Alloxysta) nigrita – Dalla Torre & Kieffer 1902: 39.

Alloxysta nigrita – Andrews 1978: 87.

Diagnosis

Alloxysta nigrita is mainly characterized by a completely open radial cell that is 2.9 times as long as wide in both males and females (Fig. 5.2); the presence of pronotal carinae; the absence of propodeal carinae; antenna with rhinaria beginning on F 4 in both males and females; female antenna with F1 longer than pedicel and F2, F2 shorter than F3, and F3 longer than F4 (Fig. 2.30); male antenna with F1 longer than pedicel and subequal to F2, F2 longer than or subequal to F3, and F3 shorter than F4. It is similar to A. brachycera , but can be differentiated by the proportion of F2–F3 (F2 is shorter than F 3 in A. nigrita (Fig. 2.30), but longer than F 3 in A. brachycera (Fig. 2.7)) and the size of the radial cell (2.9 times as long as wide in A. nigrita (Fig. 5.2), but 2.7 times in A. brachycera (Fig. 4.6)).

Material examined

Lectotype

SWEDEN: ♀ [L-d], [Lectotype Allotria nigrita Thomson, 1862 ♀ desig. M. Ferrer-Suay 2011 (red label)], [ Alloxysta nigrita ( Thomson, 1862) ♀ M. Ferrer-Suay det. 2011], [ZML. 2011 065 (green label)] ( MZLU).

Paralectotype

SWEDEN: ♀ [Lund], [Paralectotype Allotria nigrita Thomson, 1862 ♀ (red label)], [ Alloxysta nigrita ( Thomson, 1862) ♀ M. Ferrer-Suay det. 2011] ( MZLU).

Additional specimens (1 ♀)

UNITED KINGDOM: England: 1 ♀ [Surrey Chobham Common, 26 Aug. 1982, E.E. Grissell, sweeping oak] ( BMNH).

Distribution

Palaearctic.

Certain records: Madeira ( Ferrer-Suay et al. 2012g: 11), Sweden ( Thomson 1862: 409).

Uncertain records: Bulgaria and Balkan peninsula ( Vasileva-Sumnalieva 1976: 23), France ( Kieffer 1902b: 44), Hungary ( Fülöp et al. 2010: 55), Israel ( Argaman 1988: 114), Romania ( Barnea et al. 2005: 87).

New record: England.