Eurytoma, Illiger, 1807

Gómez, José Francisco, Nieves-Aldrey, José Luis, Nieves, María Hernández & Stone, Graham Nicholas, 2011, Comparative morphology and biology of terminalinstar larvae of some Eurytoma (Hymenoptera, Eurytomidae) species parasitoids of gall wasps (Hymenoptera, Cynipidae) in western Europe, Zoosystema 33 (3), pp. 287-323 : 302-304

publication ID	https://doi.org/ 10.5252/z2011n3a3
persistent identifier	https://treatment.plazi.org/id/03E487A7-AF44-276D-0610-FA206D89FB31
treatment provided by	Felipe
scientific name	Eurytoma
status

Treatment

Eurytoma View in CoL View at ENA sp. cf. aspila

MATERIAL EXAMINED. — Ex Aulacidea subterminalis : Spain. Madrid,Miraflores de la Sierra, 2-4.VIII.2002,J.L.Nieves leg (n = 6, of which 1 specimen MNHN-EY 6417).—Salamanca, Villasrubias, 23.XI.2004, M. Hernández leg (n = 11).

DESCRIPTION

n = 17; body length 1.74 mm (range 1-2.3); body width 0.8 mm (0.5-1.2) ( Figs 6B View FIG ; 8B View FIG ); body widest at segments 1-3, relatively short and wide; ratio L/W = 1.63; shape of ventral margin of body segments clearly convex; anterodorsal protuberances present from the second thoracic to eighth abdominal segment clearly protruding beyond dorsal margin of body ( Fig. 8B View FIG ).

Antero-medial setae of antennal area situated slightly above the antennae and relatively high on the upper face ( Fig. 10C View FIG ); ratios SA/LAA = 0.59 and SA/DAV = 0.51; dorsal-labral setae as long as clypeal setae; ventral margin of clypeus indistinct; labrum with slight divisions limited to apical part of labrum and five poorly differentiated lobes; maxillary palps conspicuous ( Fig. 12D View FIG ).

Mandibles with two teeth ( Fig. 15D View FIG ); right mandible appears to have a third tooth, but not as developed as in E. aspila ; exposed in part, with at least the tip visible ( Fig. 12D View FIG ; 13J View FIG ); ratio L/W = 1.96; outer margin of first tooth strongly convex with the tip moderately recurved; shape of apex of the second tooth straight, directed upwards in the same direction as the first tooth and more or less pointed; inner margin of mandible from the base of second tooth more or less straight, with the margin not interrupted ( Fig. 13J View FIG ).

BIOLOGY

This species has only been reared from galls of Aulacidea subterminalis Niblett, 1946 on runners of Hieracium pilosella L. ( Asteraceae ), living as a primary ectoparasitoid. It appears to be a monophagous species. The fully-grown larvae of this species of Eurytoma usually overwinter in old galls of A. subterminallis ( Fig. 15C View FIG ); adults emerge in the spring in synchrony with the development of new host galls.

REMARKS

The adult of this species is closely allied to that of E. aspila but it cannot be assigned to this species. According to Askew (pers.comm.), it could represent a new undescribed species, and was recorded as such in a published catalogue ( Askew et al. 2006).However the larvae of the two species are rather different.They can be distinguished by the two-toothed mandibles.