334 Phylum Arthropoda 



ASCALAPHIDAE 



The writer has been unable to rear from egg to adult this uncommon 

 group of Neuroptera. Eggs are sometimes deposited by adults in almost 

 any kind of container (Smith, 1931). They are unstalked and adhere 

 to the substratum. They hatch readily enough, but the young larvae 

 have so far refused to feed. 



Larvae of this group have been collected by sweeping grass and other 

 vegetation. They live on the leaves largely exposed and sometimes 

 almost in colonies. If one is swept up, the search for others should be 

 continued. The writer has attempted to rear them through by placing 

 them on aphid-infested plants but without success. 



Larvae of other species are found sometimes in digging in loose soil or 

 in examining dust layers. Since they do not form pits there is no 

 readily perceived evidence of their presence, and their discovery has 

 been largely accidental. 



SIALIDAE 



Adults of Corydalis have been reared by bringing in nearly grown 

 larvae and placing in an aquarium in which one end is water and the 

 other soil. The larvae migrate to the moist soil when fully grown, form 

 a pupal cell, and emerge usually in May or June in the mid-west. 



Egg masses of Corydalis are readily recognized as white blotches on 

 trees, foliage, rocks, and bridges over water. They hatch normally in 

 the laboratory but the writer has never attempted to rear them. They 

 have a three year life cycle and are aquatic carnivores which would 

 require an elaborate equipment for normal living conditions. 



Bibliography* 



Anthony, Maud H. 1902. Metamorphosis of Sisyra. Amer. Nat. 36:615. 

 Bristowe, W. S. 1932. Mantispa, a spider parasite. Ent. Mo. Mag. 18:222. 

 Braur, F. 1851. Verwandluggsgeschichte des Osmylus maculatus. Weigm. Archiv. 



i7:255- 

 KrxLiNGTON, F. J. 1934. On the life histories of some British Neuroptera. Trans. 



Soc. Brit. Ent. 1:119. 

 1932. The life history of Hemerobius atrifrons McLach. The Entomologist 



65:201. 



1932. The life history of Hemerobius simnlans Walk. Ent. Mo. Mag. 



18:176. 



1932. Notes on the life history of Hemerobius pini. Trans. Ent. Soc. South 



Eng. 8:41. 

 Hagen, H. A. 1852. Die Entwicklung und der inners Bau von Osmylus. Linn. 



Entomol. 368-418. 

 Hungerford, H. B. 1931. Concerning the egg of Polystoechotes punctatus Fabr. 



Bull. Brooklyn Ent. Soc. 26:22. 

 Moznette, Geo. E. 1915. Notes on the brown lace-wing. J. Econ. Ent. 8:350. 



♦Writings on Neuroptera in which some reference is made to rearings. 



