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1920]
Kinsey, Phylogeny of Cynipid Genera and Biological Characteristics
369

Table III. Cynipid Galls

Genus Amount of Hypertrophy Larval Cell Order of Larval Cells Connection with Host
Aulacidea
Phanacis
Timaspis
None, or small Not distinct nor separable Aggolmerate Not distinct, and entirely inseparable
Aylax None, or small, or great Distinct but inseparable Agglomerate or polythalamous; monothalamous in 4 species Not distinct, or not separable; separable in 3 or 4 species
Rhodites Small or great Distinct but inseparable Agglomerate or polythalamous Inseparable or separable
Diastrophus Small Distinct, but only slightly separable Agglomerate or polythalamous Inseparable
Gonaspis Not very great Distinct, only slightly attached Monothalamous Separable
Neuroterus None, or small More or less distinct; not separable 26 species agglomerate or polythalamous; 26 species monothalamous 30 species inseparable; 22 species separable
Amphibolips Great Very distinct, but more or less connected with the rest of the gall by strands or fibers Monothalamous Entirely distinct and separable
Disholcaspis Great Entirely distinct and separable (at least in maturiry) Monothalamous Entirely distinct and separable

Reproduction
(Table IV)

A large proportion of the Cynipidæ reproduce agamically. There can be little question of the non-existence of the males of many of the species. Hartig (1840) bred almost 10,000 individuals of a single species, Dryophanta disticha, and secured only females. In spite of extensive collecting and breeding of many species of gall-wasps, both in Europe and America, no males have been found for some of them, and Adler (1881) and other workers have regularly secured galls and mature insects from the eggs of these agamic females.

The successive generations of some species are all similar and agamic; Adler found this to be the case with five species, each of which he bred for two successive generations—for three generations in the case of Andricus serninationis. In the case of other species, most likely for the