Relacions tròfiques en gal·les de la forma agàmica d'Andricus kollari (Hartig, 1843)

Abstract

A total number of 1.145 galls have been collected, all of them from the North-East of the Iberian peninsula. Of these, 426 have been used for the study since 859 inquilines and parasites belonging to 27 species have been obtained from these galls. In this work all the inquilines and parasites and their inter-relations are mentioned (if they have been recognized). The inquiline genera that have been obtained are Synergus Hartig, 1840, Saphonecrus Dalla Torre & Kieffer, 1910, and Ceroptres Hartig, 1840; Synergus umbraculus (Olivier, 1791) is the most abundant species repre-senting a 39.4 % of the inquilines and a 32.8 % of the total associated fauna. The effect produced on galls of A. kollari by Synergus ibericus Tavares, 1920, as an inquiline is mentioned for the first time. The parasites obtained (17.9 % of the total associated fauna ) are Eurytoma Illiger 1807 and Eudecatoma Ashmead, 1888 (Eurytomidae), Ormyrus Westwood, 1832 (Ormyridae), Eupelmus Dalman, 1820 (Eupelmidae), Torymus Dalman, 1820 and Megas-tigmus Dalman, 1820 (Torymidae) and Mesopolobus Westwood, 1833 Cecidostiba Thomson, 1878 and Hobbya Delucchi, 1957 (Pteromalidae). The most frequent species is Eurytoma brunniventris Ratzeburg, 1852, representing the 32.9 % of the parassites, and the 5.4 % of the total associated fauna.