208 [January 



Description of the imago and larva of a new species of CHRYSOPA. 



BY HENRY SHIMER. 

 (Communicated January 9, 1865.) 

 Chrysopa Illinoiensis, n. sp. 



Pale green, moderately pubescent ; dorsal stripe broad, very light 

 prasinous ; sides verdigris-green, paler beneath. Head above, posteri- 

 orly greenish-yellow, anteriorly and beneath pale yellow; a small black 

 line in front of the eye; between the base of the antennae, the eye and 

 the black line in front, a reddish-purple spot; mouth red. Eye in life, 

 green with golden and other prismatic reflections, displaying in the 

 sunlight a most beautiful play of changeable colors; eye in death, of a 

 dark leaden hue. Antennae white, basal article with a very faint shade 

 of green. Maxillary and labial palpi white, with a longitudinal black 

 line on the exterior side of each ; upper segments pointed with fuligi- 

 nous; a small black spot beneath the base of the maxillae. On the side 

 of the prothorax anteriorly, a reddish-fuscous line, equal to that in front 

 of the eye, and apparently in a right line with it through the centre of 

 the eye. Legs greenish-white; tibiae and tarsi lightest, slightly clothed 

 with a ferruginous pubescence, predominating on the tarsi and without 

 close observation, appearing to give color to the tarsi; claws brownish. 

 Wings hyaline, beautifully iridescent; nervures light greenish-white, 

 with a deeper shade of greenish at the base and through the middle, 

 clothed with short black hair, most numerous on the margins, alter- 

 nating on the internal costa, each hair terminating in a fine point. 

 Form slender. Wing almost twice the length of the body, apex some- 

 what rounded, the very slight acumination slightly predominating in 

 the posterior pair. Antenna? long, articvdations very numerous, basal 

 article much swollen. 



Measurements. 



Length of body .33 to .45 inch. 



Alar expanse, 1.025 to 1.08 " 



Length of wing, .5 to 5.3 " 



Breadth of wing, .18 to .2 '• 



Whole length to tip of closed wings, .... .58 to .62 " 



Antennae, .35 to A " 



Hab. — Illinois. 



The foregoing description was taken from a large suite of living spe- 

 cimens obtained from a field of corn, which had been sown very thick 

 for fodder. The specimens were mostly taken either in the larva or 

 pupa state, and matured. They were very numerous in the latter part 



