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Mesotrophe Hampson Gen. rev.

Type species: maximaria Guenťe.

This genus consists of a few rather large species from the old Anisodes complex, many of which were assigned to a Mesotrophe section of the genus by Prout (1938, Gross-Schmett. Erde 12: 169) that was defined on the peculiarity of male forewing venation described below. A number of features of the male genitalia are also definitive, and serve to bring in further species that lack the venation character. The fasciation of the wings is somewhat broader and more diffuse than in related genera.

The male forewing typically has the cell short, the cross veins oblique, weak, widely separating M2 from Rs and M1. Rs arises from near the apex of the medial areole, M1 from the anterior angle of the cell, and they run close together sinuously to about two thirds towards the margin from the cell, where M1 curves away strongly towards the dorsum. Veins from M2 posteriorly are rather closer together than is usual in the Cosymbiini. This feature is much weaker in all the other species except the last listed below, where the venation is unmodified.

The male abdomen lacks coremata. The genitalia are massive, the uncus represented by two widely separated spine-like processes. The valves are often rather rectangular, the costal and saccular processes occuring towards the apex of the valve. The aedeagus is relatively short, broad.

In the female, the bursa copulatrix is narrow, pyriform, tapering gently to the ductus, with a fine rugosity throughout. The ostium is set in a slight pouch.

The genus consists of the five species that occur in Borneo and the Australasian sister-species of two of them, also mentioned in the text following. All appear to be lowland species.

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