1985] 
Kimsey — Neochrysis genera 
271 
Table I. Generic Characteristics of Exochrysis, Ipsiura, Neochrysis and Pleuro- 
chrysis. 
Characteristic 
Exochrysis 
Ipsiura 
Neochrysis 
Pleurochrysis 
Pronotal carina sharp 
and protruding 
- 
+ 
- 
- 
Male S-IV exposed 
- 
+ 
- 
- 
Male S-IV two-thirds or 
more as long as III* 
- 
+ 
- 
+- 
Female S-III longer than 
II* 
+ 
+ 
+ 
+ 
Head with genal fovea* 
+ 
- 
- 
- 
Metanotal lobe digitate 
and protruding* 
+ 
- 
- 
- 
Hindfemur with basal pit* 
+ 
+ 
+ 
- 
Pronotal declivity with 2 
pits 
- 
- 
- 
+ 
Propodeum with medial 
tooth 
+ 
_ 
— 
+- 
T-III without depressed 
pit row 
— 
— 
+ 
_ 
RS sigmoid, curving away 
from costal margin 
+ 
+ 
+ 
+ 
T-I anterolateral corners 
sharp 
+ 
+ 
- 
+- 
♦Characteristics unique to these genera. 
Exochrysis is the sister group of Ipsiura. Both have a well- 
developed facial carina that extends up to the midocellus, T-I gen- 
erally has sharp anterolateral corners and the female S-III is much 
longer than II. A number of Exochrysis species, including imperfo- 
rata and leucostigma have a well-developed pronotal carina, 
although it is not as highly modified and sharp as in Ipsiura. 
Included Species: alabamensis (Mocs&ry) 1914, imperfecta (Gri- 
bodo) 1879, lemniscata Kimsey new species, leucostigma (Mocsary) 
1889, panamensis (Cameron) 1888, silvanus Kimsey new species, 
spinigera (Spinola) 1838. 
Key to the Species of Exochrysis 
1 . Scapal basin up to and including transverse frontal carina highly 
polished and impunctate except narrow band of minute punc- 
