first pairs of legs being dark brown, the hind femora usually rather brownish; the tarsi brown except at their bases.
TYPES.—Of flosculi: 6 stems of galls (and perhaps insects?) in the Giraud collection in the Museum d'Histoire Naturelle in Paris (acc. Houard 1919:11). This material determined by Giraud, tho probably not types in a strict sense. This material from France (acc. Darboux and Houard 1907), probably Vincennes, "on Quercus Robur" (acc. Houard 1919); but the original description also mentions Austrian material.
Of giraudi: 3 insects designated as types, and 5 specimens determined by Tschek, in the Vienna Museum (acc. F. Maidl in litt.). From Lower Austria, probably from near Vienna (acc. Kieffer 1901).
I have not seen these types. The present descriptions are therefore based on the published descriptions cited in the bibliography, on the excellent colored figure of the Giraud material published by Darboux and Houard (1907), and on an insect in the U.S. National Museum.
INQUILINE.—Ceroptres arator Hartig. Emerges the same summer (acc. Mayr-Fitch 1876).
PARASITES.—Decatoma biguttata (Swederus). Emerges in June of the same year (acc. Mayr 1905: 546).
Eupelmus vesicularis (Retzius) (acc. Ruschka 1920).
Platymesopus erichsoni Ratzeburg (acc. Mayr 1903). Emerges in June of the same year.
P. tibialis (Westwood) (Giraud 1877 acc. Kieffer 1899). Emerges in June of the same year.
Pteromalus incrassatus Ratzeburg. Emerges in June of the same year (acc. Mayr 1903).
Recorded specimens of this bisexual insect and of its small, bud-like galls are very few, and little is known of its biology. It will probably prove as widespread as its agamic form pubescentis. Meanwhile it serves as another instance of the meager data available on the Mediterranean cynipid fauna. Tschek (1869) found the adult insect emerging from May 2 to 11. Mayr (1882) was the first to suggest that this is the alternate generation of pubescentis, as I have noted in the account of pubescentis.
Mayr (1871: 69) stated that a Giraud-determined specimen of flosculi which was loaned him by Haimhoffen was the same as Spathegaster giraudi Tschek, and that flosculi has precedence by one month in publication. I re-publish this synonymy while pointing out that it is not impossible that Giraud had two different things from the two localities, Vincennes (near Paris) and Austria, mentioned in his original description. Since the agamic pubescentis is not definitely
