i'MK LEAF BEETLES. 



1.179 



KEY TO THE INDIANA GENERA OF HALTICTNI, SUBTBIBE A. 



a. Last joint of hind tarsi globosely swollen (Fig. 515, a) ; punctures of 

 elytra confused; surface glabrous; thorax very little narrower than 

 elytra. LI. CBdionychis. 



ua. Last joint of hind tarsi not inflated, usually slender, sometimes thick- 

 ened when viewed from the side. 

 h. Mesosternum always visible, usually moderately long - . 



c. Thorax without a transverse impression near the base; hind tibiae 

 faintly or not grooved. 

 d. First joint of hind tarsus short, as compared with the tibiae, and 

 rather broad; claws appendicular^ (Fig. 515, &) ; size medium, 

 4.5 or more mm. LII. Disonycha. 



del. First joint of hind tarsus long and slender ; claws simple ; size 

 smaller, less than 4 mm. 

 e. Hind tibiae grooved above or on the outer edge, at least near 

 apex ; elytra without yellow stripes or spots. 

 f. Hind tibiae with the apex entire, the spur placed in the mid- 

 dle in front of the tarsus. 

 g. Punctures of elytra confused; first joint of hind tarsus 

 nearly or quite as long as half the tibia (Fig. 515. c). 



LIII. LONGITARSUS. 



gg. Punctures of elytra in regular rows; first joint of hind 

 tarsus not more than one-third the length of the tibiae 

 and scarcely as long as the three following joints united. 



LIV. Glyptina. 



//'. Hind tibiae deeply grooved above, with the apex notched or 

 bilobed, the spur placed on the outer lobe ; reddish-brown, 

 shining. LV. Aphthona. 



ee. Hincl tibiae not grooved on the outer edge, slightly excavated 

 near the tip, the spur at middle beneath ; elytra each usually 

 with a yellow stripe or spots. LVI. Phylloteeta. 



gg. Thorax with a transverse impression on basal half. 



h. Transverse impression of thorax usually feeble, not distinctly 

 limited at each end; elytral punctures, when present, confused. 

 i. Hind tibiae each with a short terminal spur. LVIL Haltica. 

 Pi. Hind tibiae wholly without spurs. LVIII. Liperaltica. 



////. Transverse impression deep, limited at each end by a longi- 

 tudinal fold; above bicolored. 

 j. Elytra nearly smooth, the punctures, when present, extremely 

 fine and scattered. LIX. Lactica. 



jj. Elytra with distinct punctures in rows. 



/,-. Form oval; surface without erect hairs. Diphaulaca. 

 I'k. Form oblong, parallel ; elytra with short hairs arising from 

 punctures on the intervals. LX. Trichaltica. 



