484
Indiana University Studies
|
and naked. Bisexual adults (known for divisa only) with mesonotum roughened anteriorly about parapsidal grooves, the mesopleura with a limited rough spot. Agamic galls spherical, ellipsoid, or elongate club-shaped with very little spongy material inside; bisexual gall (known for divisa only) an irregularly restricted or subdivided cell attached to the edge of a leaf or rarely in buds or on young shoots.
6
| ||
| Agamic female with abdomen not more than half again as long as high, with tip of second segment extending three-quarters of way to tip; the mesonotum in part punctate and hairy with a large, smooth and naked area. Agamic gall spherical to ellipsoid with almost no spongy tissue inside. Bisexual forms unknown.
C. agama
| ||
| 5. | Agamic female of Central Europe with thorax robust and scutellum rugose, as much so anteriorly as posteriorly; northern European insects with mesonotum smooth. Bisexual females with legs bright, clear yellow. Agamic galls soft, sometimes spotted but not banded; bisexual galls with a shorter purplish or reddish pubescence when fresh.
C. folii, 5a
| |
| 5a. | Agamic female largely rufous and piceous, mesonotum heavily punctate and hairy; scutellum as rugose anteriorly as posteriorly; length 2.8 to 4.0 mm. Agamic galls up to 30.0 mm. in diameter, spongy, shrivelling, becoming russet brown. Bisexual form as in next variety. Central European.
var. folii
| |
| Agamic female largely rufous; mesonotum moderately punctate and hairy; scutellum smoother anteriorly than posteriorly; length 3.0 to 4.4 mm. Agamic gall up to 10.0 mm. in diameter, less spongy, not shrivelling, remaining light brown. Bisexual form as in above variety. Mediterranean Europe.
var. flosculi
| ||
| Similar to above. On Q. Ilex in Spain.
var. ilicicola
| ||
| Agamic female almost entirely black; mesonotum largely smooth and naked; scutellum as rugose anteriorly as posteriorly; length 2.1 to 2.7 mm. Agamic galls spongy, shrivelling, becoming russet brown. Bisexual form not known.
var. atrifolii
| ||
| Agamic female in Central Europe with thorax rather slender and with scutellum smoother especially anteriorly; northern European insects with mesonotum coriaceous or shagreened in places. Bisexual females with legs duller yellow with femora more or less piceous. Agamic galls prominently banded brown-purple. Bisexual galls with a longer, gray pubescence.
C. longiventris, 5b
| ||
