BIONOMICS OF THE CHINCH BUG. 
11 
FIRST INSTAR. 
Fig. 2, a. 
Head brown ; width, 0.235 mm. ; eyes dark red ; proboscis pale except tip 
which is dusky ; antennal segments dusky, segment 4 of antenna about twice 
the length of any one of the others, points of articulation pale. 
Fig. 2. — The chinch, bug : a, Nymph, first instar ; &„ nymph, second instar ; o, nymph, 
third instar ; d, nymph, fourth instar ; e, nymph, fifth instar ; f, adult of long-winged 
form ; g, tip of abdomen of adult female, ventral view ; h, tip of abdomen of adult 
male, ventral view. Greatly enlarged. 
Thorax 0.234 mm. in width; legs pale,, the tarsi distinctly two-jointed ; 
pronotum brown and coriaceous over the whole surface, 0.104 mm. in length; 
mesonotum pale except the small coriaceous patch on either side of the meson, 
