H. leachi 



465 



Fig. 404. H. leachi nymph, dorsum, venter, tarsus IV, hypostome [highly magnified]. 

 (N. 1048. G. H. F. N. del.) Nuttall x. 1913 a, Fig. 9. 



1'5 X 1 mm. ^ ; may attain 3'4 x 2*0 mm. when replete^. Scutum penta- 

 gonal, with rounded angles, about as wide as long (0"5 x 05 mm.) ; 

 cervical grooves short and straight. Capitulum like that of the $ 

 with the characters less pronounced, the cornua being very small and 

 the palpal processes slight ; hypostome 2 1 2, 6-7 teeth per file. 

 Venter : spiracle small, transverse, bluntly comma-shaped. Legs as 

 in the $. 



Larva (Text-figs. 405-407; PI. XII, Fig. 2): Bodi/, unfed, 



Fig. 405. Fig. 406. 



Figs. 405, 406. H. leachi larva. Capitulum in dorsal and ventral aspects, highly 

 magnified. Scutum, drawn to the same scale as Fig. 407. All figures of the larva 

 drawn from one specimen. (G. H. F. N. del.) Original. 



^ The largest of a lot experimentally raised. 



2 The following measurements in mm., relate to o s raised in Cambridge : 



Scutums Bodies (unfed) 



N. 1737 from B. E. Africa (5 o) 



0-5 xO-51 

 0-5 xO-5 

 0-46 X 0-46 

 0-46 X 0-5 

 0-43 X 0-44 



1-4 xO-82 

 1-4 xO-85 

 1-2 xO-8 

 1-2 xO-77 

 1-18 xO-7 



