•378 PKOCEEDIXGS OF THE THIRD ENTOMOLOGICAL MEETING 



seasonal history also is apparently similar. They remain active in the 

 hot weather and the rains and hibernate right inside the thick roots. 

 Hibernating larvae collected in March developed into moths between 

 13th March and 14th April. 



Phycitid Borer (C. S. 1700). 



Foodplant — Tender maize cob. 

 On the 18th September a single caterpillar was collected boring a 

 tender maize cob. It was 10 mm. long, cylindrical and tapering shghtly 

 hindwards. The head was yellow and body pale yellowish-white with 

 faint and indistinct spiracular and dorsolateral stripes visible under 

 lens. The spiracles were round, a brownish rim enclosing a clear space 

 inside. The booklets on abdominal prolegs were in complete circle. 



The caterpillar pupated on 23rd September in a silken cocoon formed 

 lining the tunnel. The pupa was about 7-5 mm. long, yellow-brown 

 in colour and without any marking or spine on any of the abdominal 

 segments or on the hind end. The moth emerged on the 3rd October. 

 It resembles the moth of C. S. 1837 to a very great extent. 



Phycitid Borer (C. S. 1837). 



Plate 39, fig. 1. 



Foodplant — Marua (Eleusine coracana). 



Caterpillars were collected in Marua stems which they were boring 

 near the base, on 16th August. They were not however found in large 

 numbers. Three of them developed into moths between 28th August 

 and 6th September and the rest have been hibernating. 



The caterpillars resemble those .of Emmalocera depressella in colour 

 and appearance but are much smaller in size, being only about 12 mm. 

 long. The head is yellow-brown and the body creamy-white. The 

 spiracles are round with a clear space inside. The five pairs of prolegs 

 are equally developed. 



Pupation takes place inside the stem. The pupa is yellow-brown 

 and has on its hind end two conical tubercles, one on each side, and 

 four to six much smaller tubercles between these two, all beiag surmounted 

 with a thin hair. 



