60 



SCALE PESTS OF COFFEE 



banded forms also but only in proportion to the amount of 

 yellow present. The pink forms turn to brown without 

 the previous admixture with dark colour. Egg laying 

 may commence before the skin hardens and turns to 

 brown. The honey dew secreted by brown bug is less 

 liquid and the growth of sooty mould is not so con- 

 spicuous as is the case with green bug. 



Male. — The male has been noticed in Mysore only 

 once, in May 1915, but has not been studied. 



Text-Figure 17. 



Euhlemma sp., a moth whose larva attacks brown bug and mealy bug. 1. Larva. 

 2. Case made of remains of scale insects under which larva lives. 3. Pupa. 4. Adult 

 moth. 



Enemies. 



There are a number of hymenopterous parasites 

 attacking brown bug. There is also a fly, the maggots 

 of which feed on the eggs. The larva of a moth, Euh- 

 lemma sp., also feed on the eggs and can be found with 

 an oval shelter made of skeletons of brown and mealy bugs 

 on its back. Text-figs. 16 and 17 and Plate IV, Fig. 

 1, illustrate a hymenopterous parasite and the moth Euh- 

 lemma which have been found attacking this pest. None 

 of these is an efficient check. 



