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42
Indiana University Studies
Gall structures in Agamic Cynips
0 = absent, — = poorly developed, + = distinct, + + = well developed. | ||||||
Subgenus | Specific Stock | Nutritive layer |
Protective layer |
Parenchyma layer |
Collenchyma layer |
Epidermal layer |
Cynips | folii | + | + | + + | 0 | + |
longiventris | + | + + | + + | — | + | |
divisa | + | + + | + + | 0 | + | |
agama | + | + | + + | 0 | + | |
disticha | + | + + | + + | + | + | |
cornifex | + | + | + | + + | + | |
Antron | echinus | + | + | — | + + | + |
guadaloupensis | + | + | + + | + | + | |
teres | + | + | + | + + | + | |
Besbicus | multipunctata | + | + | + | + | + |
maculosa | + | + | + | + | + | |
mirabilis | + | + | + + | + | + | |
Philonix | plumbea | + | + | + + | — | + |
fulvicollis | + | + | + + | — | + | |
Atrusca | dugèsi | + | + | + + | + | + |
bella | + | + | + + | + | + | |
cava | + | + | + + | + | + | |
centricola | + | + | + + | + | + | |
Acraspis | arida | — | + | + | + | + |
mellea | — | + | + | — | + | |
conica | — | + | + | + | + | |
nubila | — | 0 | 0 | + + | + + | |
villosa | — | 0 | 0 | + + | + + | |
gemmula | — | 0 | 0 | + + | + + | |
pezomachoides | — | 0 | 0 | + + | + + | |
hirta | — | 0 | 0 | + + | + + |
Within each subgenus there is striking uniformity in the degree of development of each gall tissue. Thus, in the subgenus Cynips the protective layer is unusually thick and the collenchyma layer is absent or poorly developed (except in the unique C. cornifex). In Antron all five layers are well