Sycophila binotata (Fonscolombe 1832)

Gómez, J. F., Nieves-Aldrey, J. L. & Stone, G. N., 2013, On the morphology of the terminal-instar larvae of some European species of Sycophila (Hymenoptera: Eurytomidae) parasitoids of gall wasps (Hymenoptera: Cynipidae), Journal of Natural History 47 (47 - 48), pp. 2937-2960 : 2952

publication ID 10.1080/00222933.2013.791937

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Sycophila binotata (Fonscolombe 1832)


Sycophila binotata (Fonscolombe 1832)

( Figures 3C View Figure 3 , 4B View Figure 4 , 5B View Figure 5 , 6B View Figure 6 , 7B View Figure 7 and 8B View Figure 8 )


Body length 1.87 mm (n = 1); body width 0.93 mm ( Figures 4B View Figure 4 and 5B View Figure 5 ); body barrel-shaped slightly tapering anteriorly and posteriorly, with the lateral margins of abdominal segments 1–6 almost straight; ratio L/W = 1.72; ventral margin of body segments 4–8 in lateral view straight or slightly convex; anterodorsal protuberances (lateral view) absent, the intersegmental membranes not protruding.

Dorsal margin of the vertex straight or slightly concave; ratio SA/DAV = 1.46; anteromedial setae of vertex situated midway between anterior margin of vertex and the antennae; ventral margin of clypeus indistinct ( Figure 6B View Figure 6 ); labrum with deep divisions almost reaching the level of labral setae, giving the appearance of seven subequal and clearly differentiated lobes; maxillae well-differentiated from labium ( Figure 7B View Figure 7 ).

Mandibles bidentate with the first tooth long and slender ( Figure 8B View Figure 8 ); ratio L/W 1T = 2.9; apex of the second tooth slightly blunt; inner margin of mandible from the base of second tooth straight with margin not interrupted.


Similar in body shape to S. biguttata but differ in having convex margins of body segments and a second mandibular tooth with a blunt tip.


Adults of this species ( Figure 9D View Figure 9 ) are oligophagous endoparasitoids associated specifically with Plagiotrochus ( Cynipidae ) on evergreen species of Quercus ( Fagaceae ) of the sections Cerris and Ilex . The specimen for this study was reared from an asexual generation gall of Plagiotrochus gallaeramulorum (Boyer de Fonscolombe 1832) (= kiefferianus Tav.) on Quercus coccifera L. ( Fagaceae ) ( Figure 9E View Figure 9 ).

Material examined

ex Plagiotrochus gallaeramulorum (asex.): Spain, Madrid: Arganda , March 2006, J.L. Nieves leg, (n = 1) .