I'Se potato tuber moth. 



4a 



APANTELES SP.' 



This small active parasite (figs. 36-38) was not observed until 

 1914, and seems quite scarce except in the vicinity of Pasadena. 

 The liaK-grown leaf-mining tuber- 

 moth larvpe are attacked. When 

 the parasite has discovered a leaf 

 mine, it cautiously examines it until 

 it has located the position of the tu- 

 ber-moth larva. The parasite then 

 quickly inserts its ovipositor in the 

 mine. In case it strikes the larva, 

 it oviposits; otherwise it quickly 

 withdraws its ovipositor, inserting 

 it again in a new place. This is 

 repeated until the larva is parasi- 

 tized, although the difficulty in lo- 

 cating the larva may require a sec- 

 ond examination of the mine. 

 Should the parasite discover a larva, 

 however, it seldom leaves until it 

 has been successful in oviposition. 



This Apanteles is a most promis- 

 ing parasite. The record of an average winter life cycle foUows: 



Tig. 34. — Bassus gibbosus: 

 Mature larva. Much 

 enlarged. (Original.) 



Fig. 35.— i 

 b s us: Pupa. 

 Much enlarged. 

 (Original.) 



1915. 



Fig. Za.—ApanteUs sp. (Chttn. No. 22:i(J'"), a parLusito of l,lio potato tuber moth: 

 Adult fomiilc. Much enlarged. (Original.) 



January 25. — Tuber-moth Iarv«> parasitized by Apanteles sp. 



Marrh '.'>. — I adult ApanLdes h]>. iHH\U',(\. (Female.) 



Mareh 5.- 2 adult ApanLelcH Hp. issued. (Mal(!H.) 



.March 0. -I 'aAwK ApantdcH n\). \mwA. (Male.) 



Length of life cycle 37 days at average mean temperature of 63° F. 



« Chittenden No, 2230". 



