Arthrolytus nanus Askew & Nieves Aldrey 1982
Creators: name: Doğanlar, Mikdat
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Pteromalidae
Arthrolytus
Arthrolytus nanus
Cynipidae
Andricus
Andricus quercusradicis

description: Arthrolytus nanus ASKEW & NIEVES ALDREY, 1982 (Figs 1c, 2e, 3f 1, f2)
T y p e m a t e r i a l s: Holotype ♀. Spain, Salamanca, Dehesa de Candelario (UTM. 30TTK6670), ex gall of Andricus quercusradicis (FABRICIUS) (Hym. Cynipidae) on Quercus pyrenaica WILLD., gall collected 19.x.1979 1-7.i.1980. Leg. J. L. Nieves, in coll. Brit. Mus. (Nat. Hist.). Paratypes: 1 ♀, 2♂♂, same data as holotype; 1 ♀, 3♂♂, same locality and host as holotype, coll. 4.x.1980, emerged x-xi. 1980, leg. J. L. Nieves; 1♂, Spain, Salamanca, Linares de Riofrio, ex gall A. quercusradicis coll. 28. iii.1978, emerged 7-15.vi.1978, leg. J. L. Nieves; 1♂, France, Vienne, Poitiers, ex gall Neuroterus albipes (SCHENCK) (Hym. Cynipidae) in second year (1969?) of gall, leg. F. Barbotin; 1 ♀ England, Berkshire, Wytham Wood, from soil under oak trap, 30.vii.1951, G. C. Varley. In colls. BMNH, RRA and Dept. de Zoologia of Universidad de Salamanca.
D i a g n o s i s: ♀: Forewing (Fig. 3f 1) with stigmal vein forming 40°angle to the postmarginal vein; measurements of m:pm:st as 5: 6: 4; pm 1.2x as long as marginal vein, and 1.5x stigmal vein; marginal vein 1.25x as long as stigmal vein. postmarginal vein 0.7x as long as marginal vein. Head in anterior view1.29x as broad as high; POL 1.6 OOL; malar space about 0.33x eye length. Antenna (Fig. 1c) with combined length of pedicel and flagellum equal to breadth of head; flagellum 1.63x length of scape; pedicel almost as long as the anelli plus first funicle; almost twice as long as wide and 1.5x as long as F1; F6 slightly transverse; club 2.5x as long as F1; Propodeum medially not quite 0.5 x as long as scutellum, median carina and lateral plicae indicated only anteriorly; median area about 2x as wide as long, reticulate. Forewing with a broad, arcuate, light brown band from marginal and stigmal veins, almost reaching posterior margin of wing. Legs stramineous to whitish, metallic colouration on legs absent, except on hind coxae on their outer aspects basally metallic; Body Length 1.6 mm
♂: Similar to ♀ except as follows: Antenna (Fig. 2e) with pedicel twice as long as wide, slightly longer than F1 (1.1x) and distinctly narrower than F1 (at most 0.67x); 1.2x as long as F1; flagellum 1.86x length of scape, F1 1.28x, F6 0.8x as long as wide; club 2.1x as long as F1. Forewing (Fig. 3f 2) with the stigmal vein forming 470 angle to the postmarginal vein; Forewing with a fuscous spot. Legs stramineous to whitish, only hind coxae on their outer aspects basally metallic, pretarsi brown. Metasoma with basal tergite entirely pale testaceous. Body length 1.2-1.6 mm.
D i a g n o s i s:givenbyASKEW & NIEVES ALDREY (1982).
H o s t s: reared from gall of Andricus quercusradicis (FABRICIUS) (Hym. Cynipidae) on Quercus pyrenaica WILLD., and from gall Neuroterus albipes (SCHENCK) (Hym. Cynipidae) (ASKEW & NIEVES ALDREY 1982).
D i s t r i b u t i o n: Europe: Spain, Salamanca, Dehesa de Candelario; France, Vienne, Poitiers; England, Berkshire, Wytham Wood (ASKEW & NIEVES ALDREY 1982).
description: Published as part of Doğanlar, Mikdat, 2018, World species of Arthrolytus (Hymenoptera Pteromalidae, Pteromalinae), with description of new species, pp. 255-289 in Linzer biologische Beiträge 50 (1) on pages 269-270, DOI: 10.5281/zenodo.3985426