Eurytoma infracta Mayr, 1904

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 : 308-310

publication ID

https://doi.org/ 10.5252/z2011n3a3

persistent identifier

https://treatment.plazi.org/id/03E487A7-AF5E-276B-05F6-F9F36B58FDE8

treatment provided by

Felipe

scientific name

Eurytoma infracta Mayr, 1904
status

 

Eurytoma infracta Mayr, 1904 View in CoL

MATERIAL EXAMINED. — Ex Aylax minor : Spain. Madrid, Rivas Vaciamadrid, 14. V.2003, J. L. Nieves leg (n = 2).

Ex Neaylax verbenacus : Spain. Madrid, Dehesa de Arganda, 1. VI.2003, J. L. Nieves leg (n = 4). — Same locality, 6. VI.2004, J. L. Nieves leg (n = 8, of which 2 specimens MNHN-EY 6408).

DESCRIPTION

n = 14; body length 1.67 mm (range 1.3-2.0); body width 0.73 mm (0.7-0.8) ( Figs 5D View FIG ; 7D View FIG ); body more or less fusiform, ratio L/W = 2; ventral margin of body segments clearly convex; anterodorsal protuberances present from second thoracic segment to the third abdominal and not protruding beyond the dorsal margin of body segments ( Fig. 7D View FIG ).

Head with upper margin of vertex straight; anteromedial setae of the antennal area situated at the same level as the antennae; ratios SA/LAA = 0.38 and SA/DAV = 1.1; antero-medial setae of vertex situated relatively high on the upper face ( Fig. 9C View FIG ); dorsal-labral setae as long as clypeal setae; ventral margin of clypeus indistinct; labrum with slight divisions restricted to its apical part; flaps or lobes not well differentiated; maxillary palps conspicuous ( Fig. 11D View FIG ).

Mandibles with two teeth and exposed in part, with the tip of the first tooth visible ( Fig. 11D View FIG ); first tooth relatively long and slender; ratio between the length at its base and the width 2.38; outer margin of first tooth strongly convex, tip moderately recurved; apex of the second tooth straight, directed upwards in the same direction as the first tooth and more or less acute; inner margin of mandible from the base of second tooth strongly convex ( Fig. 13D View FIG ).

BIOLOGY

This species is a primary oligophagous ectoparasitoid, reared from galls of Aylacini cynipids in fruits of species of Salvia (Lamiaceae) and Papaver (Papaveraceae) ( Askew et al. 2006). It is univoltine; fully-grown larvae usually overwinter and adults emerge in summer when the new host galls are developing.

REMARKS

The straight upper margin of the vertex and the strongly convex inner margin of the base of the second mandible tooth allow separation of the larva of this species from the others in this study.

V

Royal British Columbia Museum - Herbarium

VI

Mykotektet, National Veterinary Institute

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Hymenoptera

Family

Eurytomidae

Genus

Eurytoma

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