Alloxysta obscurata ( Hartig, 1840 )

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 : 126-128

Alloxysta obscurata ( Hartig, 1840)

( Figs 2O ; 3K )

Xystus obscuratus Hartig, 1840: 200 .

MATERIAL EXAMINED. — (3♀). M9-BOR2000- T6 -M1: 1♀ ; M9- BOR2000- T3 -M1: 1♀ ; M9-BOR1400- T2 -M1: 1♀. 2 ♀ deposited at MNHN and 1♀ at UB .

DISTRIBUTION. — Species known from Holarctic region (Ferrer- Suay et al. 2012a). Previously cited from France by Kieffer (1904: 597) and De Gaulle (1908: 26).

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

DIAGNOSIS. — Alloxysta obscurata is characterized by: partially open radial cell, 2.7 × longer than wide ( Fig. 3O ); pronotal carinae present, propodeal carinae absent; female antenna with rhinaria beginning from F3; F1 longer than pedicel and F2, F2 shorter than F3, F3 shorter than F4 ( Fig. 2O ); male antenna with rhinaria beginning from F4, F2 slightly curved, F1 longer than pedicel and F2, F2 longer than F3 and F3 longer than F4. Similar to A. macrophadna , but the two species can be differentiated by the shape and proportion between flagellomeres: F1 longer than F2, F2 shorter than F3 and F3 shorter than F 4 in A. obscurata ( Fig. 2O ), versus F1 subequal to F2, F2 longer than F3 and F3 subequal to F 4 in A. macrophadna ( Fig. 2K ); male antenna without any curved flagellomere in A. obscurata but with F2 and F3 strongly curved in A. macrophadna ; proportions of radial cell 2.7 × longer than wide in A. obscurata ( Fig. 3O ) but 3.0 × in A. macrophadna ( Fig. 3K ).

Alloxysta pilae

Ferrer-Suay, n. sp. ( Fig. 8 )

TYPE MATERIAL. — (1♀). Holotype. ♀ deposited at MNHN, labelled M10-CAI1400- T6 -M1, Saorge (06), Forêt de Caïros , fir forest, Alt: 1379, 15-30.IX.2010.

ETYMOLOGY. — The new species is dedicated to the mother of the first author, to thank her for her constant support.

DISTRIBUTION. — France.

HOSTS. — Unknown.

DIAGNOSIS. — Alloxysta pilae Ferrer-Suay , n. sp. is characterized by: a completely open radial cell, 2.2 × longer than wide; pronotal and propodeal carinae present; female antenna with rhinaria beginning from F4, F1 longer than F2, F2 subequal to F3, F3 shorter than F4. Similar to A. franca Ferrer-Suay & Pujade-Villar , n. sp., but the two species can be differentiated by the pronotal carinae: present in A. pilae Ferrer-Suay , n. sp., versus absent in A. franca Ferrer-Suay & Pujade-Villar , n. sp.; proportions of radial cell 2.2 × longer than wide in A. pilae Ferrer-Suay , n. sp., versus 2.4 × in A. franca Ferrer-Suay & Pujade-Villar , n. sp.

DESCRIPTION

Length

Female: 0.9 mm. Male unknown.

Coloration

Head, mesosoma and metasoma yellowish brown. Scape, pedicel, F1-F3 dark yellow, F4-F11 yellowish brown. Legs yellow and wing venation yellowish brown.

Head

Transversely ovate, smooth and shiny, slightly wider than high in front view. Vertex glabrous, face hairy. Setae present below, between and a few above toruli. Transfacial line 1.1 × height of compound eye. Malar space 0.6 × height of compound eye.

Antenna

Female: 13-segmented, filiform. All flagellomeres sparsely setose. F1-F3 smooth and thinner than remaining flagellomeres; F4-F11 club shaped and with rhinaria. Antennal formula: 2.5 (1.5); 3.1 (0.9); 2.5 (0.9); 2.5 (0.9); 3.4 (1.3) ( Fig. 8D ).

Mesosoma

Pronotum sparsely setose, with two thick latero-median carinae ( Fig. 8C ). Mesoscutum smooth and shiny, rounded in dorsal view, with few scattered setae, and two setiferous lines on both sides. Scutellum smooth and shiny, with scattered setae more abundant at scutellum apex. Height of mesopleural triangle along anterior margin 1.4 × the height of mesopleuron. Propodeum densely setose; with two carinae present forming a plate with lateral sides slightly curved and few setae antero-medially ( Fig. 8F ).

Forewing

Longer than body, 1.6 × longer than mesosoma and metasoma together; covered with dense pubescence; marginal setae present ( Fig. 8A ). Open radial cell 2.2 × longer than wide ( Fig. 8B ). R1 short and slightly curved; Rs long and slightly curved.

Metasoma

Proximal part with an incomplete ring of setae, glabrous medially and wider laterally. Rest of metasoma smooth and shiny with terga clearly visible.

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.

FIG. 8. — Alloxysta pilae Ferrer-Suay, n. sp.: A, forewing; B, radial cell; C, pronotum; D, antennae; E, body; F, propodeum. Scale bars: 50 μm.