1160 



FAMILY LTI1. CHRYSOMELID^. 



Southern half of State; frequent. April 18- June 15. Occurs 

 on various species of dock (I! inn ex). 



XL. LINA Meg. 1823. (Gr., "flax.") 



Oblong, feebly convex species, having the sides of thorax thick- 

 ened and the elytra usually spotted or striped. Three species are 

 known from the State and another may occur. 



KEY TO INDIANA SPECIES OF LINA. 



. Thorax with suit's yellow and disk dark metallic green. 



l>. Elytra reddish-yellow with rounded black spots, which ;ire sometimes 

 merged into transverse hands. 2151. INTERRUPTA. 



1>1>. Elytra dull reddish or .greenish-yellow, with elongate black spots. 



2152. SCRIPTA. 

 an. Thorax green or yellow, the sides not paler. 



<: Elytra dull yellow without spots; thorax green. TREMUL.E. 



re. Elytra purplish-Mack, narrowly margined with yellow. 



2153. OBSOLETA. 



2151 ( 



). LINA 



Fab.. Syst. Eleut, I. 1X01. 4.",x. 



oblong-oval. P.lack : thorax with a 

 <*. \ / yellow margin enclosing a small black dot ; 



\v elytra dull yellow with usually six spots 



% JMHt H u11 each, more or less confluent; base of 



\ ^H L / 



\ antenna 1 and tibhe reddish. Thorax with 



\ *i^i i^nr / 



^H \ frS the black center very finely, the thickened 



yellow sides coarsely, punctate. Elytra 

 with numerous rather coarse, scattered 

 punctures. Length 6.5-8.5 mm. (Fig. 504.) 



Throughout the State; common on 

 willow, cotton wood, etc. April 2- 

 August 11. The dull yellow of elytra 

 is red in life. The spots of elytra 

 vary much in shape and are some- 

 times absent, except the two median 

 ones on each. Known as hipponica 

 Linn, in most collections, but the lat- 

 ter is a European species with thorax wholly metallic. 



2152 (0X39). LINA SCRIPTA Fabr.. Syst. Eleut., I, 1801, 438. 



More elongate and parallel 

 than the preceding. Thorax ami 

 under parts usually similar in 

 color to those of ////OT///J/W, but 

 the former sometimes reddish 

 with four small black spots in a 

 curved line at center. Elytra with 

 the snl ure and seven elongate 



Fig. 504. 



(After Forbes.) 



(i, hectic, normal form; li, c, (I, e, variations of 

 elytra. (After Riley.) 



