S. Mahunka szerk.: Folia Entomologica Hungarica 62. (Budapest, 2001)

Plagiotrochus razeti Barbotin, 1985 Dryocosmus cabrerae Kieffer - Tavares, 1930 (non Kieffer 1901), syn. nova, the asexual generation. Plagiotrochus razeti - Barbotin 1985: 58, asexual generation. Asexual generation (Figs 3 A-F) Type material examined — Holotype (F. 3. 01) unisexual female deposited at the Muséum National d'Histoire Naturelle (Paris), with following labels: "Conyac, Q. ilex, 18.XII.68", "F. 3 01", "MNHN-Paris, Barbotin col., P. razeti", "Holotype" (red label). Paratypes (F. 3. 02 to F. 3. 04) are deposited at the University of Barcelona. Other material examined: Five asexual females from experimental material named "F3" from Barbotin collection; 6 asexual females from Santa Coloma (Andorra) collected in Malaise trap (XII. 1992 to 15. I. 1993). All material is deposited at the University of Barcelona. The gall of the asexual generation develops on Q. ilex. In the Iberian Peninsula we had found gaudy semi-subterranean galls of this species which are similar to P. kiefferianus Tavares galls, but the larval chambers are radially placed what is typical for P. razeti, while in P. kiefferianus galls, the larval chambers are placed prolong the longitudinal axis. Kieffer ( 1902a) mentioned that this gall was collected from Q. suber L., later he corrected this record, and gave Q. ilex as the host plant (Kieffer 19026). Asexual female sufficiently described by Barbotin (1985); SEM pictures of P. razeti (Figs 3 A-F) are contributed to improve the original description. Nevertheless, we observed several morphological differences in the specimens emerged from monolocular and multilocular galls. Females emerged from monolocular galls are smaller in size (1.2 to 2.6 mm), with yellow-orange body; the frontal carina is usually absent (Figs 3C, D); median scutellar line is inconspicuous or absent (Figs 3E, F); sculpture of the scutum is less impressed; the median propodeal carina is inconspicuous, incomplete, present in the anterior 1/3 only (Fig. 3B); mesosoma is more squared in lateral view. Females emerged from multilocular semi-subterranean galls are larger in size (2.8-3.2 mm); body from red-brown to black; frontal carina present (Fig. 3C); median scutellar line present in posterior 1/6 (Fig. 3E), sculpture of the scutum is well marked; central area of the propodeum with a distinct but incomplete median carina (Figs 3A-B); mesosoma clearly rectangular in lateral view. On the basis of the given characters one can think that it might be two different species. However, the variation limits are continuous in these two forms and also the sexual forms cannot be differentiated, and thus we consider that these differences are intraspecific. Although the two above mentioned asexual forms have a very pubescent head and mesosoma, a character which differentiates P. razeti from all other species of the genus. Females from Barcelona (Spain), identified by Tavares (1930) as Dryocosmus cabrerae are lost. After the examination of the adult and gall descriptions, we concluded that this material belongs to the asexual generation of P. razeti. In the original description (Barbotin 1985) the asexual generation of P. razeti was given only, an editorial mistake omitted the description of the sexual generation (Barbotin, pers. com.). Unfortunately, the sexual generation of Barbotin's P. razeti was never published, however, he already gave a name for this form - "favardf (pers. com.) and we respected his denomination (Pujade-Villar 1991, Pujade-Villar & Ros-Farré 1998). This denomination is a nomen nudum and we describe the new sexual form.