PEOCEEDINGS OF THE THIRD ENTOJIOLOGICAX MEETING 377' 



Pupation takes place inside the bored stem or under a leaf-sheath 

 on the stem in which the larva has fed. Before pupating the larva 

 prepares an exit hole for the moth. 



Sesamia uniforniis. (Plate 37, figs. 2,3.) 



Foodplants — Sugarcane ; maize ; rarhi and batri {Saccharmn spontcmeum) ; 

 ikri [Saccharum fuscum) ; kanra {Saccharum arundinaceum). Besides 

 the above, the caterpillars have been fed on jitar {Andropogon 

 Sorghum) in the lusectary. 

 Like S. inferens, S. imifonnis also remains active practically through- 

 out the year, the growth in winter being however very slow. In March 

 young larvae are available in large numbers, especially in lanra, and 

 active caterpillars have been collected practically throughout the year. 

 To judge from its occurrence it prefers kajira to the other foodplants. 

 It is similar to S. inferens in habit. 



C. S. 1666 (Plate 38, fig. 1.) 



Foodplants — Rarhi and batri {Saccharum spontaneum) ; ikri {SaccJiarum 

 f^lscum) ; sugarcane (Muimi, MuzafEarpur, October). 



The caterpillars of this species have been observed to be active 

 throughout the year and occur in enormous numbers in rarhi and batri. 

 Only on one occasion were they found in ikri at Pusa in small numbers. 

 At Munni, a village in the Muzafiarpur District, they were observed 

 in fair numbers in sugarcane in October, probably because there was 

 no batri growing there within a radius of about three miles. In winter, 

 active caterpillars have been collected from outside but the pupal stage 

 has been observed in the Insectary to extend to more than two-and-a- 

 half months, although moths emerged in November and January. 



As usual with all internal borers, the caterpillars cause " dead heart " 

 and bore extensively up and down the stem, converting it into a hollow 

 tube. They pupate inside the bored stem after gnawing an opening on 

 the side for the emergence of the future moth, the mouth of the opening 

 being stopped by a thin layer of the epidermis of the stem. 



Emmahcera sp. (C. S. 1771). 



Plate 38, fig. 2. 



Foodplant — Kanra {Saccharum arundinaceum). 



These caterpillars exactly resemble those of Emmahcera depressella 

 in appearance and hke the latter bore the stem near the roots. Their 



