1969] 
Brown and Kempf — A canthognathus 
03 
See Figs. 5-10. Smooth and shining, with small punctures 
abundant on head, a few rugae around the antennal insertions, 
Mesonotum finely and indistinctly longitudinally striolate-punctulate, 
sericeous-opaque. Color brown to piceous, head darkest (specimens 
may not be fully colored). Legs and mouthparts yellowish-tan. 
Type material: all from Brasil; states are given in capital letters. 
Holotype (WWK) a worker from a small nest with queen and 
brood taken in a fragment of rotten wood found lying beside a 
brook in a moist, shaded gully in the forest reserve of the Jardim 
Botanico, environs of the city of Sao Paulo, sao paulo, February 
1967, W. L. Brown leg. This colony was kept for observation, and 
eventually yielded two adult males, the only ones so far recorded for 
the genus. Paratypes, in addition to workers, queen and males from 
the type nest (MCZ, WWK), are the following (states listed south 
to north): Rio grande do sul: Tainhas, April 1959, F. 
Plaumann leg., 1 w[orker] (WWK 3250). santa Catarina 
(all Plaumann leg.) : Chapeco, June, August i960, 2w (WWK 
s/n and 4618); Ibicare, July 1959, 1 q(ueen) (WWK 3126) and 
September i960, 2 w, (WWK 3621); Nova Teutonia, July 1952 
2 w, October 1953 2 w 1 q, June 1957 1 w 2 q, July 1957 1 q, Feb- 
ruary 1959 1 w, July 1959 1 w (WWK 3100) ; February i960 1 w 
(WWK 3780), June i960 1 w (WWK 3956); July 1961 1 w 
(WWK 3379) ; January 1963 1 w (WWK 3744) ; June 1963 1 w 
Figures 8 - 10. A canthognathus rudis sp. n., male genitalia from one of 
the specimens from the type nest series. Fig. 8, aedeagus. Fig. 9, volsella. 
Fig. 10, paramere, with dashed line indicating apical extremity of excavated 
portion. Drawn by Brown. 
