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Rhipiphorus, rī-pif′o-rus, n. a genus of heteromerous beetles.

Like P. Montezumae, and under like influences, it shows much dimensional variation, and the leaf-fascicles are heteromerous, with the larger number in the southern part of its range.

With some species, however, heteromerous fascicles are normal.

In Mexico, for example, where snow-capped mountains lie on subtropical table-lands and extremes of temperature are in juxtaposition, the conditions are favorable for the production of species with heteromerous fascicles, and the number of leaves in the fascicle possesses often climatic rather than specific significance.

Heteromerous: having an unequal number of tarsal joints on the feet.