1969] 
Evans — - Pompilidae 
27 
X as wide as high ; third antennal segment 2.0-2. 4 X as long as 
wide; other head features as in chilensis. Propodeum short, strongly 
convex in profile. Subgenital plate similar to that of chilensis ; 
genitalia as shown in figure 6. 
Distribution. — Argentina south to Rio Negro; also southern 
Brazil. Actually the only Brazilian specimens I have seen are the 
type and a female from Goias, collected in October 1962 at Jatai. 
I have seen many specimens from Argentina (58 33 c? c? ), from 
the provinces of Salta, Tucuman, La Rioja, Cordoba, Mendoza, Rio 
Negro, and Buenos Aires; it is also recorded from La Pampa and 
Chaco. 
Variation. — Common variation in color of the male is summarized 
in the above description. A few males have the abdominal banding 
reduced, and some have the prothoracic band and the markings on 
the legs reduced ; two males from Mendoza are all black except for 
the large scutellar-metanotal spot and some yellow on the outer 
orbits. These males may mimic a different member of the occi- 
dentals complex ( scutellaris White?) just as the red-headed males 
(also prevalent in Mendoza) may mimic ruficeps Schrottky. 
Austrochares exiguus (Banks) new combination 
Batazonus exiguus Banks, 1947, p. 380 [Type: $, BRAZIL: Vista Alegre, 
Rio Branco, 6 Sept. 192+ (J. Bequaert) (Mus. Comp. Zook, no. 26781)]. 
This species is still known only from the type, which differs but 
slightly from mexicanus and from the more extensively maculated 
males of gastricus. The late R. R. Dreisbach made a balsam mount 
of the genitalia some years ago, but the genitalia were mutilated 
and cleared too long in potash, so it is difficult to prepare a sketch 
or to make a detailed comparison with related species. The genitalia 
appear to be much like those of gastricus except that the aedoeagus 
is more slender and parallel-sided, the digiti more acute apically. 
Austrochares mexicanus Dreisbach 
Austrochares mexicanus Dreisbach, 1966, in Evans, 1966, p. 201 [Type: 9, 
MEXICO: Minatitlan, Veracruz, 26 Aug.-l Sept. 1961 (Dreisbach) 
(Mich. State Univ.)]. 
This species is known from a short series of both sexes from the 
type locality and one female from Chiapas. I have seen no addi- 
tional specimens since the description. The differences from related 
species are adequately summarized in the keys; the genitalia (Evans, 
1966, fig. 38) differ only slightly from those of gastricus. The males 
undoubtedly mimic Mexican members of the Polybia occidentals 
complex, while the females bear a strong resemblance to such 
common pompilids as Sericopompilus neotropicalis and Anoplius 
a picul at us. 
