292 U. S. NATIONAL MUSEUM BULLETIN 216 



1 from A. caryivorella, 3 from A. juglandis, 1 from A. kearfottella, 

 5 from Acrobasis sp., 5 from Alabama argillacea, 5 from Anisota 

 rubicunda, 4 from Anomis erosa, 10 from Archips argyrospilus, 4 

 from A. cerasivoranus, 3 from A. jervidanus, 2 from Archips sp., 

 1 from Argyrotaenia pinatubana, 2 from A. guercifoliana, 1 from 

 Choristoneura conflictana, 10 from C. jumiferana, 3 from C. pinus, 



1 from C. rosaceana, 1 from Cingilia catenaria, 1 from Coleophora 

 pruniella, 1 from Diaphania hyalinata, 1 from Dichomeris marginella 



2 from Dioryctria reniculella, 2 from Ennomos subsignarius, 1 from 

 Epermenia cicutaella, 1 from Exyra semicrocea, 3 from Grapholitha 

 molesta, 6 from Hemerocampa leucostigma, 2 from Hemerocampa sp., 

 2 from Hemileuca sp., 2 from Hyaloscotes sheppardi, 2 from Hyphan- 

 tria cunea, 1 from Lascoria ambigualis, 4 from Malacosoma ameri- 

 canum, 8 from M. disstria, 1 from M. fragile, 4 from Malacosoma 

 sp., 1 from Nematocampa limbata, 1 from Oiketicus abbotii, 2 from Orgyia 

 antigua, 1 from Papilio marcellus, 1 from Pieris rapae, 1 from PoZ?/- 

 chrosis viteana, 1 from Pterophorus periscelidactylus, 3 from Pyrausta 

 nubilalis, 1 from Rheumaptera hastata, 1 from Rhyacionia buoliana, 3 

 from R.frustrana, 1 from R.frustrana bushnelli t 1 from Simyra henrici, 

 1 from Sparganothis Jlavibasana, 1 from #. pettitana, 1 from Spargano- 

 this sp. on Lonicera, 2 from Spilonota ocellana, 12 from Thyridopteryx 

 ephemeraejormis, 5 from Trichoplusia ni, 1 from Urbanus proteus, 

 38 from various Lepidoptera not determined to genus, 1 from 6toa- 

 c?6res cingulatus, 1 from Phobocampe pallipes, and 1 from Rhogas 

 terminatus. Besides these, there are some additional host records 

 in literature, for a record of which, see Townes (1945, Mem. Amer. 

 Ent. Soc, vol. 11, pp. 76-77). There are 5 records on pin labels 

 of captures on flowers: 1 on Ceanothus, 1 on Cirsium lanceolatum, 2 

 on Daucus carota, and 1 on Euphorbia commvtata. It has also been 

 taken at nectaries of Vigna sinensis. Three females and one male 

 were collected at lights. 



There are many published accounts of the biology. These have 

 been summarized by Townes (1940, Ann. Ent. Soc. America, vol. 33, 

 pp. 319-320). This species attacks almost any exposed or weakly 

 protected lepidopterous pupa or prepupa on trees, shrubs, or herbage. 

 Occasionally it parasitizes ichneumonid or braconid cocoons, and is 

 thus a secondary parasite. Sometimes it serves as host itself, its most 

 frequent parasite being Theronia atalantae. Correlated with its wide 

 host range it is extremely variable in size. Development from egg to 

 adult requires about 20 days. 



This species is abundant in open woods and bushy country from the 

 Atlantic to the hundredth meridian, and occurs also in the eastern 

 edge of the Rocky Mountains and in scattered localities farther west. 

 Its normal range is from the Transition to the Lower Austral zones. 



