NO. 3657 ANEURUS—KORMILEV 3 
10. Head shorter than width across eyes (11:12). 
pygmeus Kormilev, 1966, southern U.S. 
Head as long as width across eyes . . . NON Poe eG 
11. Antennal segment II clavate, as long as if larger peeciest leneth over 4.0 
mm ela tan cel nin 7 
penne song II iouowace: iuoner then hie emailer ippeeies) length less 
than4.0mm .. . stl dhsa Geeels 
12. Anterior process of the head reaching BS of pntennal segment I; postocular 
tubercle (composed of 3 minute teeth) very short, not seats to outer 
border of eyes . . . . . . . . haitiensis Kormilev 1968, Haiti 
Anterior process not peachine to tip of antennal segment I; postocular 
tubercles strong, acute, reaching outer border of eyes. 
6. championi, new species, Guatemala, Mexico 
13. Scutellum wider, ratio between length and width 11.5:19; lateral borders of 
abdomen finely serrate. . . . . . 4. froeschneri, new species, Panama 
Secutellum narrower, ratio between length and width 12:16; lateral borders 
of abdomen roughly serrate. 
minutus Bergroth, 1886, southern U. S., Central America 
14. Antennal segment II obovate, III and IV cylindrical . ....... 15 
Antennal segment II clavate, III tapering toward base,.1V fusiform . 17 
15. Scutellum subtriangular, rounded apically; ratio between length and 
width 10.5:19; hypopygium small, transverse (3.5:4). 
tenuis Champion, 1898, Panama, Cuba? 
Scutellum semicircular; ratio of length to width 2:3 or 3:4... ... 16 
16. Larger species, length over 5.0 mm; hypopygium long and wide (10.5:10). 
montanus Champion, 1898, Guatemala 
Smaller species, length less than 4.5 mm; hypopygium smaller (8:7). 
fiskei Heidemann, 1904, U.S., Cuba? 
17. Scutellum short, ratio of length to width 10:16. ..... scart Snedodireed Keo) 
Scutellum longer, ratio of length to width 15:19 or 20:24. 
7. inconstans Uhler, 1871, U.S. 
18. Smaller species, length less than 4.0 mm; antennae shorter, less than twice 
as long as head is wide (24:12.5). 
5. politus Say, 1832, southern U.S. (Florida) 
Larger species, length over 5.0 mm; antennae longer, more than twice 
as long as head is wide (38:16). 
leptocerus Hussey, 1957, Guatemala, Panama 
1. Aneurus pusillus, new species 
FIGurEs 4-6 
Maue.—Elongate, sides subparallel; minutely granulate. Head 
slightly shorter than width across eyes (co 10:11.5, 9 10.5:12). 
Anterior process conical, not reaching to tip of antennal segment I; 
jugae slightly visible from above. Antenniferous tubercles small, 
acute, convex exteriorly. Eyes large, semiglobose, protruding. Post- 
ocular tubercles conical with blunt tip, produced as far as, or a little 
less than, outer borders of eyes. Vertex very finely, transversely 
striate. Vertex mesad of eyes with two (1-+1) large, ovate callosities. 
Antennae thin, one and one-half times as long as length of the head 
