Alloxysta nigrita ( Thomson, 1862 )

Ferrer-Suay, Mar, Selfa, Jesús, Villemant, Claire & Pujade-Villar, Juli, 2015, Charipinae Dalla Torre & Kieffer, 1910 (Hymenoptera: Cynipoidea: Figitidae) from the Mercantour National Park (Alpes-Maritimes, France), with descriptions of three new species, Zoosystema 37 (1), pp. 115-138 : 126

Alloxysta nigrita ( Thomson, 1862)

( Figs 2N ; 3N )

Allotria nigrita Thomson, 1862: 409 .

MATERIAL EXAMINED. — (1♀). M9-BOR2000- T 8-M2: 1♀. Specimen deposited at MNHN.

DISTRIBUTION. — Species known from the Palaearctic (Ferrer-Suay et al. 2012a). Previously cited from France by Kieffer (1902b: 44).

HOSTS. — See Charipinae Worldwide Catalogue (Ferrer-Suay et al. 2012a).

DIAGNOSIS. — Alloxysta nigrita is characterized by: a completely open radial cell, 2.9 × longer than wide in both male and female ( Fig. 3N ), pronotal carinae present, propodeal carinae absent, female antenna with rhinaria beginning from F 4 in both male and female, female antenna with F1 longer than pedicel and F2, F2 shorter than F3, F3 longer than F4 ( Fig. 2N ), male antenna with F1 longer than pedicel and subequal to F2, F2 longer or subequal to F3, F3 shorter than F4. Similar to A. brachycera , but the two species can be differentiated by the ratio between F2 and F3: F2 shorter than F 3 in A. nigrita ( Fig. 2N ) while F2 longer than F 3 in A. brachycera ( Fig. 2C ); proportions of radial cell 2.9 × longer than wide in A. nigrita ( Fig. 3N ) but 2.7 × in A. brachycera ( Fig. 3C ).

Figures

FIG. 2. — Types of Alloxysta Förster, 1869 antennae: A, A. abdera Fergusson, 1986; B, A. arcuata (Kieffer, 1902); C, A. brachycera Hellén, 1963; D, A. brevis (Thomson, 1862); E, A. castanea (Hartig, 1841); F, A. circumscripta (Hartig, 1841); G, A. citripes (Thomson, 1862); H, A. fracticornis (Thomson, 1862); I, A. conso- brina (Zetterstedt, 1838); J, A. longipennis (Hartig, 1841); K, A. macrophadna (Hartig, 1841); L, A. melanogaster (Hartig, 1840); M, A. mullensis (Cameron, 1883); N, A. nigrita (Thomson, 1862); O, A. obscurata (Hartig, 1840); P, A. pilipennis (Hartig, 1840); Q, A. postica (Hartig, 1841); R, A. proxima Belizin, 1962; S, A. pusilla (Kieffer, 1902); T, A. victrix (Westwood, 1833). Scale bars: 50 μm.

FIG. 3. — Types of Alloxysta Förster, 1869 radial cells: A, A. abdera Fergusson, 1986; B, A. arcuata (Kieffer, 1902); C, A. brachycera Hellén, 1963; D, A. brevis (Thomson,1862); E, A. castanea (Hartig, 1841); F, A. circumscripta (Hartig, 1841); G, A. citripes (Thomson, 1862); H, A. fracticornis (Thomson,1862); I, A. conso- brina (Zetterstedt, 1838); J, A. longipennis (Hartig, 1841); K, A. macrophadna (Hartig, 1841); L, A. melanogaster (Hartig, 1840); M, A. mullensis (Cameron, 1883); N, A. nigrita (Thomson, 1862); O, A. obscurata (Hartig, 1840); P, A. pilipennis (Hartig, 1840); Q, A. postica (Hartig, 1841); R, A. proxima Belizin, 1962; S, A. pusilla (Kieffer, 1902); T, A. victrix (Westwood, 1833). Scale bars: 50 μm.