1154 



FAjVI ILY LHI. CHRYSOMELIDxH. 



2137 (6790). Leptinotarsa juncta Germ., Ins. Sp. Nov., 1824, 590. 



Form of the preceding, 

 which it resembles very close- 

 ly. Distinguished mainly by 

 the characters given in key. 

 The femora are marked on the 

 outer side near apex with a 

 black spot. Length 10-12 mm. 

 (Fig. 498.) 



Putnam, L aw rence, 

 Knox, CraAvford and Posey 

 counties ; scarce. June 10- 

 September 21. Feeds on 

 the horse-nettle, Solarium carolinense L. and different species of 

 ground-cherry (Physalis) . A member of the Austroriparian fauna. 



Fig. 498. a, eggs; b, larva; c, beetle; d, elytra; e, front leg of 

 beetle. (After Riley.) 



XXXVI. Zygogramma Chev. 1834. (Gr., "yoke + together.") 



To this genus, as at present limited, belong about a dozen of the 

 species formerly listed under Chrysomela. All of these but one 

 occur in the Western and Southwestern States. They are oval, 

 convex forms of medium size, having the elytra marked with spots 

 or stripes; last tarsal joint toothed beneath; tarsal claws narrowly 

 separated and connate at base, whence the generic name. 



*2138 (6799). Zygogramma suturalis Fabr., Syst. Ent, 1775, 95. 



Oval or subglobose, convex. Brown, feebly bronzed ; ely- 

 tra yellow, with the first and second intervals and a broad 

 discal stripe dark brown; epipleura pale with dark margins. 

 Thorax three times wider than long, sparsely and coarsely 

 punctured. Elytra coarsely punctured on disk, more finely 

 on sides, the punctures bordering the sutural brown stripe 

 in rows, the others scattered. Length 5.5-6.5 mm. 



Throughout the State; frequent, April 18-Deeem- Hg m . 

 her 10. Occurs in spring on ragweed in low moist (Aftei RogerB ° 

 places and on flowers of goldenrod in autumn. In var. casta Rogers 

 (Fig. 499), the subsutural dark stripe is often divided to behind 

 middle and the discal stripe wholly, or to near apex. 



XXXVII. Calligrapha Erich. 1817. (Gr., " beautiful + writ- 



ing.") 



Form oval or rounded, convex; size medium or rather small; last 

 tarsal joint not toothed beneath; claws widely separated. Eight 



