Mesoceration Janssens 1967

Mesoceration Janssens, 1967

Mesoceration Janssens, 1967: 11 (type species Mesoceration capense Janssens 1967: 11; by monotypy).

The genus Mesoceration comprises 43 species, 24 of which are new species described below. This morphologically diverse genus has a wide but sparse distribution pattern in South Africa and Lesotho (Fig. 89). The genus is currently known from 3,718 databased specimens, collected at about 200 localities/events. Specimens of all species have been collected from stones in the current of streams or rivers. Specimens of some species are also found in marginal vegetation, but usually in smaller numbers. Several species have reduced wings.

New collection records for 11 of the 19 previously described species are given below. New locality records are not yet available for the following species (Perkins & Balfour­Browne, 1994, unless otherwise noted; map figures in parentheses): M. abstrictum (Fig. 105), M. capense Janssens, 1967, M. concessum (Fig. 108), M. endroedyi (Fig. 111), M. pallidum (Fig. 118), M. sulcatulum (Fig. 120), M. transvaalense Janssens, 1971 (Fig. 117), and M. truncatum (Fig. 121).