NEW SPECIES OF CHILOCORINI 
(COLEOPTERA: COCCINELLIDAE)* 
By Edward A. Chapin 
Museum of Comparative Zoology, Harvard University 
In the course of a study of the genera of this tribe a few un- 
described species were found and are herein named. It was found 
desirable to elevate Zagreus Mulsant from subgeneric to generic rank 
because of certain structural differences that exist between that group 
and Exochomus Redtenbacher. It seems likely that Zagreus , with 
eight-segmented antennae, has replaced Exochomus , whose antennae 
are ten-segmented, in the New World south of Panama. 
Zagreus costalimai n. sp. 
(Fig. 2) 
Length: 3. 2-3. 5 mm. Similar to Z. jordani (Mulsant) (Fig. 1) 
but slightly larger and with two additional subapical sutural spots 
common to the two elytra. Head pale yellow (male) or piceous 
black (female), finely and sparsely punctulate, sparsely set with fine 
short pubescence, the surface between the punctures alutaceous. 
Pronotum yellowish with a large blackish spot which extends over 
five-sixths of the basal margin and which fails narrowly to reach the 
anterior margin. The surface sculpture similar to that of the head 
but without pubescence. Scutellum small, triangular, black. Elytra 
yellowish with three common sutural spots and each with two others; 
the first and largest of the sutural spots lies in the basal half of the 
conjoined elytra, is almost quadrate and in length along suture is 
two-sevenths of the total length of the beetle. It is flanked on either 
side by large subtriangular spots, each slightly smaller than the 
sutural spot. In the apical half of the elytra there are the second 
and third sutural spots, each smaller than the preceding. On either 
side of the second sutural spot is an almost oval spot which is about 
two-thirds as large as the sutural spot. Both lateral spots are sepa- 
rated from the lateral margin by a distance equal to the separation 
between the lateral and sutural spots. The apical sutural spot is 
about half as long and half as broad as the second sutural. Under 
parts pale yellow, except for the blackish metasternum and first and 
second abdominal sternites. Metacoxal arcs complete. Elytral 
epipleura not foveolate. Legs pale except that the femora (posterior 
in male, all in female) are partially dark. 
* Manuscript received by the editor January 26, 1965 
