ON NEW AND LITTLE KNOWN SPECIESOF ARADIDAE, I. (HEMIPTERA, HETEROPTERA)

Among the unidentified Aradidae in the collection of the junior author were two new species, which are described in this paper: Aradus tonkinensis, n.sp. from Tonkin, and Calisius africanus, n.sp. from South Africa. This report is of particular interest, as it is the southernmost locality in Africa for the genus Calisius STAL, 1860. From Neocarven-tusangulatus USINGER andMATSUDA, 1959, is known only the male. We give therefore a description of the female. All measurements indicated in this paper were taken by a micromillimeter eyepiece, 25 units = 1 mm. The length of abdomen was taken for convenience from the tip of scutellum to the tip of genital segment, with exception of apterous species and Calisius. In the first it was taken from the fore border of tergum I to the tip of genital segment, and in the latter from fore border of connexivum II to the tip of genital segment. In ratios the first figure indicates the length and the second the width of measured portion