Cecidostiba fungosa

Gómez, Jose F. & Nieves-Aldrey, Jose Luis, 2012, Notes on the larval morphology of Pteromalidae (Hymenoptera: Chalcidoidea) species parasitoids of gall wasps (Hymenoptera: Cynipidae) in Europe, Zootaxa 3189, pp. 39-55 : 51

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https://doi.org/ 10.5281/zenodo.280035



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scientific name

Cecidostiba fungosa


Cecidostiba fungosa (Geoffroy in Fourcroy, 1785)

Measurements. Body length: 1.8 mm, width: 0.62 mm (n= 1) ex gall Andricus quercusradicis (Fabricius) (Sexual generation).

Description ( Figs 4 View FIGURE 4 B, 5 B). Whitish; integument mostly smooth and glabrous on all body segments; small, 2.5 × as long as broad and tapering gradually posteriorly ( Fig. 4 View FIGURE 4 B) and strongly curved ventrally in lateral view ( Fig. 5 View FIGURE 5 B); ventral margins of body segments straight.

Head (anterior view) more or less trapezoid, 1.1–1.3 × as broad as high; vertex slightly incised medially ( Fig. 6 View FIGURE 6 B); cephalic chaetotaxy pattern as in A. glandium consisting of by very short and inconspicuous setae ( Fig. 6 View FIGURE 6 B); ventral margin of clypeus straight; labrum large and trapezoid, more than 4 × wider than long ( Fig. 7 View FIGURE 7 B).

Mouth parts ( Fig. 7 View FIGURE 7 B). Maxillae indistinct; two pairs of inconspicuous maxillary setae; labium sub-rectangular, rugose and convex and not collapsed; labium setae invisible.

Mandibles ( Fig. 8 View FIGURE 8 B); tooth almost 1.8 × longer than wide measured at its base; angle separating inner side of tooth and base of the mandible obtuse (> 90 º); outer margin of tooth almost straight, slightly curved near sharp apex.

Biology. Adults of C. fungosa ( Fig. 9 View FIGURE 9. A E) are common, widespread parasitoids in oak gall wasp communities ( Askew 1961; Schönrogge et al. 1996; Bailey et al. 2009; Lohse et al. 2010). In Europe it has been reared mainly from galls of Biorhiza pallida (Olivier) and several species of Andricus Hartig and Cynips Linnaeus ( Cynipidae ) ( Nieves-Aldrey & Askew 1988).

Material examined. ex gall A. quercusradicis (Sexual generation) on Quercus pyrenaica , Spain, Madrid: El Escorial (29 /VI/ 2006) J. L. Nieves leg. (n= 3).