Andricus, Hartig, 1840

Pujade-Villar, Juli, Villemant, Claire & Andreï-Ruiz, Marie-Cécile, 2000, Cynipidae associated with Quercus collected in Corsica with the description of a new Plagiotrochus species (Hymenoptera, Cynipoidea), Zoosystema 22 (4), pp. 835-846 : 839

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Andricus sp.

MATERIAL EXAMINED. — Corli Vignola. Q. suber floral galls (No. 5), 26.V.95, 2 ♁ ♁, 8 ♀ ♀ ( UB).


The specimens of this unidentified species have been collected in catkins of Q. suber . They are similar to Andricus burgundus Giraud, 1859 and A. niger but, among the males, the occulo-occular distance ool is wide, similar to the ool of A. burgundus , and the radial cell short (shorter than in A. niger ). Among the females, the first flagellomeres are longer than the second one (as in A. niger ) but the radial cell is shorter than in A. niger . The coloration is not black. The specimens cannot be A. luteicornis because their second antennomere is less than twice as long as the width.

This material, which probably represents a new species, is not described, because A. luteicornis , A. niger and A. burgundus constitute a morphologically conflictive group.

Plagiotrochus quercusilicis (Fabricius, 1798) P. fusifex Mayr in Pujade-Villar & Ros-Farré, 1998: 120 . MATERIAL EXAMINED. — Vallée du Fango. Yellow pan trap, 21-28.V.1993 (R4/SE/C 2), 1 ♁; (R4/DN/C 1) 1 ♀; 28.V-4.VI.1993 (R5/DN/C 3), 1 ♀; 12- 19.VI.1994 (CS5/R2/94), 1 ♁ ( MNHN). — Q. ilex gall, 27.VI.96, 1 ♁ ( MNHN) .


This circummediterranean species is probably the most common in this area. It has been collected in Algeria, Andorra, Spain, France, Greece, Israel, Italy, Morocco, Palestine, Portugal, (Dalla Torre & Kieffer 1910; Mimeur 1949; Ceballos 1956; Sternlicht 1968a, b; Pujade-Villar 1994).

The galls, red and plurilocular, are present in Q. ilex and Q. coccifera leaves and catkins. The adults show a large chromatic variability (Dalla Torre & Kieffer 1910; Tavares 1926). This poly- morphism generated the description of many subspecies or varieties whose names were all recently synonymyzed with P. quercusilicis (Pujade-Villar & Ros-Farré 1998) .

The agamic form is unknow but might be P. kiefferianus . This assumption which was first stated by Tavares (1926) and then followed by other authors (Sternlicht 1968a; Pujade-Villar & Ros- Farré 1998) has never been confirmed by experimental rearing.


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