Alloxysta Foerster , 1869

Ferrer-Suay, Mar, elfa, Jesus & Pujade-Villar, Juli, 2019, Keys to world Charipinae (Hymenoptera, Cynipoidea, Figitidae), ZooKeys 822, pp. 79-139 : 79

Alloxysta Foerster, 1869

Allotria Westwood, 1833: 494. Type: Allotria victrix Westwood, 1833. Homonym of Allotria Hübner, 1823: 280. Synonymized by Hellén (1963: 8).

Xystus Hartig, 1840: 199. Type: Xystus erythrocephalus Hartig, 1840. Homonym of Xystus Schoenherr, 1826: 310. Synonymized by Hellén (1963: 8).

Alloxysta Förster, 1869: 338. Type: Xystus macrophadnus Hartig, 1841.

Pezophycta Förster, 1869: 338. Type: Xystus brachypterus Hartig, 1840. Synonymized by Hellén (1963: 8).

Nephycta Förster, 1869: 338. Type: Nephycta discreta Förster, 1869. Synonymized by Hellén (1963: 8).

Adelixysta Kierych, 1988: 351. Type: Adelixysta sawoniewiczi Kierych, 1988. Synonymized by Menke and Evenhuis (1991: 150).

Carvercharips Kovalev, 1994: 413, 414. Type: Alloxysta carinata Carver, 1992. Synonymized by Paretas-Martínez et al. (2007: 161).

General features.

Head. Transversally ovate, smooth and shiny, slightly wider than high in anterior view.

Setae found below, between and above toruli, on vertex and multiple setae on the face. Transfacial distance is 0.9 –1.3× the height of the compound eye. Malar space is 0.3 –0.6× the height of the compound eye (Fig. 12[1]).

Antenna. Female: 13-segmented, filiform. All antennomers covered with sparse setae (Fig. 12[5]). Male: 14-segmented, filiform. All antennomers covered with sparse setae (Fig. 12[6]).

Mesosoma. Pronotum with scattered setae that are differently distributed, depending on the species, with or without carinae (Fig. 12[3]). Mesoscutum is smooth and shiny, round in the dorsal view, with sparse setae. Scutellum is smooth and shiny with scattered setae that are usually more abundant on the apex (Fig. 12[8]). Propodeum with multiple setae, with or without carinae; carinae are separated or fused, forming a variably shaped plate (Fig. 12[7]).

Forewing. Longer than the body, 1.4 –1.8× as long as the mesosoma and metasoma together, with dense pubescence; marginal setae present (Fig. 12[2]).

Metasoma. Anterior region has an incomplete ring of setae, is glabrous at centre and is wider laterally. Metasoma is smooth and shiny, with T3 and T4 clearly separated (Fig. 12[4]).

Distribution.

Cosmopolitan (Ferrer-Suay et al. 2012)

Hosts.

Endoparasitoids of Aphidiinae ( Hymenoptera , Braconidae ) and Aphelininae ( Hymenoptera , Braconidae ) that are endoparasitoids of aphids ( Hemiptera , Aphididae ) ( Fergusson 1986; Menke and Evenhuis 1991). Found in a variety of hosts (Ferrer-Suay et al. 2012).