1170 



FAMILY LIII. — C tlRYSOMELiri/K. 



2167 (6907). Galerucella decora Say, Ijong's Second Exped., II, 1824, 



294; ibid. I, 195. 

 Oblong, scarcely wider behind, subdepressed. Dnll yellow or dusky 

 brown clothed with fine, short, yelluw, silken pubescence; autenntE wholly 

 piceous or with the basal joints partly dull yellow ; legs pale. Thorax twice 

 as wide as long, narrowerin front, sides curved, hind angles slightly promi- 

 nent, base oblique each side ; disk with a vague median impression and a 

 large, shallow one each side, marked with piceims. Elytra scarcely widened 

 behind, surface coarsely, deeply and rather closely punctate. Length 4.5- 

 5.5 mm. 



Lake County ; scarce. .Uay 21-.Iune 30. Occurs on willow. Has 

 the same range as cacicollis and, like it, probably confined to the 

 northern third of the State. 



2168 (6912). Galerucella ldteola Mull., Melanges Soc. Roy. Turin, 1706, 



III, 1ST. 



Oblong, subdepressed. Dull olive or 

 greenish-yellow, finely pubescent; head 

 with a black spot on vertex and another 

 between the eyes; thorax A\ith three black 

 spots ; elytra with a stripe on sides and a 

 narrow, short line on middle nf base, 

 black ; abdomen piceous. Thorax more than 

 twice as wide as long, slightly narrowed 

 in front; disk with an obli<3ue depression 

 eacli side and a sliallow pit on median line 

 near apex; surface rather sparsely punc- 

 tate. Klytra with sides nearly parallel, 

 niargius flatt™ed, surface rather finely 

 and evenly punctate. Length 5-7 mm. iVi'j:. 

 510.) 



This is the injurious "elm-leaf 

 liiitle, " introduced from Europe into 

 the ['niteil Stat(>s neai- Baltimore 

 about is:',7. Since then it has gradu- 

 ally sjiread southward and westward 

 and reached Harrison County, Indiana, ab,,ut ll)(l.3, probably by 

 way of the Ohi., River. It is abundant on th,. ,.hus of Lac'onia 

 Elizabeth and Corydon in that county, Irom which the specimens in 

 the collection were obtained. The beetle hibernat,.s as ima-o be- 

 neath bark, in cracks of wood and other shelter, and emerges to 

 feed on the first opening buds in spring. The egos are laid in 

 clusters of five to 20 or more on the lower side of the elm leaves and 

 hatch m about a week. The larv.P feed on the under side of the 

 leaf, gradually sl<eletonizing it. They r..ach full -rowth in 15 to '^0 

 days, and then crawl or fall 1o the ground and chan.-e to piapiP 



Fig 510. (After Howard in Far. Bull. 

 U. .S. Dep. Agr.) 



