A REVISION OF THE 
NEW WORLD GENUS CHROMOCRYPTUS 
(HYMENOPTERA: ICHNEUMONIDAE). 
By Charles C. Porter 1 and Thomas J. O’Neill 
Department of Biological Sciences, 
Fordham University, 
Bronx, NY 10458 
Introduction 
Taxonomy 
Chromocryptus is a strictly New World representative of the 
cosmopolitan ichneumonid subtribe Ischnina (Gelinae: Meso- 
stenini), as defined by Townes (1969: 158-9). It may be distinguished 
from other Nearctic and Neotropic ischnines by the following con- 
cert of features: (1). Black, red, and white (sometimes mostly red); 
(2). Wings hyaline to moderately infumate; (3). Clypeus pyramidally 
raised, often nasute; (4). Mesoscutum largely with coarse punctures 
or puncto-reticulation and with notauli only faintly defined (fine but 
well impressed in some males); (5). Hind coxa with a strong subver- 
tical groove externo-ventrally near base; (6). Discocubitus gently 
arched to weakly angled, sometimes with a vestigial ramellus; 
(7). Axillus very close to hind margin of hind wing; (8). Propodeal 
spiracle 1. 3-3.0 as long as wide; (9). Propodeal cristae large and well 
projecting, obtusely cuneate to subligulate, never spiniform; (10). 
Base of 1st gastric tergite with a lateral expansion that is low and 
rounded or sometimes prominently subtriangular; (11). Female gas- 
ter short and stout, short-fusiform to almost ovoid; (12). Second 
gastric tergite with abundant large punctures that usually are subad- 
jacent or denser; its setae short but mostly approaching the length of 
their interspaces; (13). Ovipositor slender to robust, straight, com- 
pressed; its sheathed portion 0.35-0.45 as long as fore wing. The 
foregoing diagnosis easily distinguishes Chromocryptus from its 
'Research Associate, Florida State Collection of Arthropods, Florida Department of 
Agriculture and Consumer Services, P. O. Box 1269, Gainesville, FI 32602. 
Manuscript received by the editor May 15, 1985. 
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