1979] Evans, Kugler & Brown — Scolebythus madecassus 49 
1962). Then the incomplete closure of the abdomen by the seventh 
segment and the articulated second valvifer separates Scolebvthus 
from other aculeates, and its half-cone shaped eighth tergum places 
it more specifically with the Bethylidae, rather than the Cleptidae or 
Chrysididae (Zander, 1899; Oeser, 1961; Brothers, 1975). The 
affinity ol the bethylids and Scolebythus can clearly be seen by 
comparing this description with that of Cephalonomia sp. (Oeser, 
1961:74-75, 119; figs. 101-105). The degree of internalization of the 
apparatuses is the same, as are the shapes of the seventh sterna and 
eighth terga. Also similar are the ninth hemitergites, the first and 
second valvifers, and the first and second valvulae. Cephalonomia 
differs in having a more reduced apodeme on the ninth tergum, 1- 
segmented third valvulae, a distinctly V-shaped furcula, a somewhat 
differently shaped sting base, and long, narrow processes that 
extend from the dorsal arm of each second valvifer to the fulcral 
processes of the sting. 
Description of male (Figs. 7-8) 
The single male is smaller than any known female, measuring 
5.5 mm in length, the fore wings 4.1 mm (body length of the females 
varies from 7 to 9 mm). Color of body, appendages, and wings 
similar to female. Mouthparts and clypeus as in female; antennae 
13-segmented, very slightly more slender than in female, but similar 
in length of individual segments and in total length. Temples less 
well developed than in female, and head not much produced above 
eye tops, the vertex forming a smooth arc between eye tops. 
Minimum distance between eyes 1.1 X eye height, inner orbits 
closest near the middle, as in female. Thorax essentially as in female 
in all details, including legs and wings; scutellum with a well formed 
basal transverse groove (this is also true in the females; see below). 
Abdomen slightly more slender than in female, with 7 distinct 
segments. Socii (pygostyles) absent; subgenital plate tongue-shaped 
(Fig. 7). Aedeagus large, with a pair of acute apical processes; 
parameres slightly exceeding the aedeagus, slender and somewhat 
hirsute; volsellae with the cuspis finger-like, digitus expanded and 
acute lateroapically (Fig. 8). 
The subgenital plate resembles closely that of Clystopsenella 
longiventris, as figured by Day (1977). The genitalia also resemble 
