No. 22.] HYMENOPTERA OF CONNECTICUT. 321 



°S. (P.?) annulicornis (Cresson). 



S. (Iseropus) inquisitoriellus (Dalla Torre). Pimpla in- 

 quisitor Say. Howard, Insect Book, Fig. 38 (adult stage), Fig. 

 39 (early stages), Fig, 40 (cocoons). Morley * regards this as 

 a synonym of the European (Epiurus) Scamhus graminellcB 

 Schrank. 



Is on record as a primary parasite of the American tent-cater- 

 pillar (Malacosoma americana) and as a secondary parasite of 

 the beneficial Ameloctonus fugitivus, also as an important para- 

 site of the white-marked tussock moth caterpillar {Hemerocampa 

 leucostigma) ; has been reared from tgg cocoons of the spiders 

 Argiope riparia and Epeira angulata, and from larvae feeding 

 externally on the caterpillar of Laverna eloisella feeding within 

 the stems of CEnothera ; other hosts are as follows : bag- worm 

 (Thyridopteryx ephemerceformis) , Gnorimoschema gallcesolid- 

 aginis, Grapholitha olivaceana, Coleophora cinerella, an unknown 

 leaf-roller on ash, Phycita juglandis, an unknown Californian 

 Tineid, Malacosoma constricta, and M. calif ornica. 



Berlin, 30 June, 1905 (W. E. B.) ; Branford, 3 September, 

 1904 (H. L. V.) ; New Haven, 6, 14 August, 1906 (P. L. B.). 

 Bred from larva of Malacosoma americana collected at Stoning- 

 ton, June, 191 3 (W. E. B.). 



S. (I.) inquisitoriellus var. investigator (Walsh). 



Canterbury, 14 August, 1905 (B. H. W.). 



S. (Itoplectis) conquisitor (Say). Pimpla conquisitor Say. 

 Howard, Insect Book, PI. ix, Fig. 10. 



According to Fiske this is perhaps the most common hymen- 

 opterous parasite of the American tent-caterpillar (Malacosoma 

 americana) . Other hosts are the forest tent-caterpillar (Malaco- 

 soma disstria), the white-marked tussock moth (Hemerocampa 

 leucostigma), the bag-worm (Thyridopteryx ephemerceformis), 

 the cotton worm (Aletia argillacea), Phryganidea calif ornica, 

 Mineola indigenella, Phacellura hyalinitalis , an unknown Texan 

 Tortricid on cedars, Argirolepia quercifo liana, Archips cerasivor- 

 ana, (Rogas) Aleiodes intermedins and Ameloctonus fugitivus. 



The records of W. E. B., H. W. W., E. J. S. M., P. L. B., 

 J. A. Hyslop, and H. L. V. collectively indicate the occurrence 



•Revision of Ichneumonidse, Part iii, 1914. 

 21 



