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371. 

 GALERUCA VIBURNI. 



Order Coleoptera. Fam. Galerucidas. 



Tyipe of the Genus, Chrysomela Tanaceti Linn. 



Galeruca Geof., Lat., Fab., Gyl., Sam., Curt. — Crioceris Fab., Mars. 

 — Auchenia Mars. — Chrysomela Linn., Forst., Mars. 

 AntenncE inserted at the base of the clypeus, never so long as the 

 body, filiform and pubescent j 1 1 -jointed, basal joint subclavate, 

 the stoutest and rather the longest, 2nd the smallest, the re- 

 mainder sometimes decreasing in length to the apex (6). 

 Labrum transverse, semiorbicular, scarcely indented in the cen- 

 tre, with a few bristles on the anterior margin (1). 

 Mandibles very convex externally, the inside concave and pro- 

 ducing a large fleshy lobe, tridentate at the apex (2). 

 MaxillcE with an ovate lobe furnished with spines at the apex ; 

 external lobe narrower, attenuated, curved and spined at the 

 apex (3). 



Mentum trigonate, truncated before. Lip small, suborbicular. 



Palpi small attached on each side towards the middle, triarticu- 



late, basal joint minute, 2nd subtrigonate, 3rd conical (4). 



Head transverse. Eyes rather prominent. Thorax transverse, the 



sides more or less convex. Scutellum generally obtuse at the apex. 



Elytra ovate or elliptical. Wings ample. Abdomen of the female 



sometimes very large and extending beyond the elytra. Thighs stont. 



Tibiae thickened towards the apex, which is bristly. Tarsi broad and 



cushioned beneath, 5-jointed, 1st and 2nd joints obfrigonate, the 



former the longest, 3rd bilobed, 4th very minute and indistinct, ^th 



slender clavate. Claws small, acute and simple (5, afore leg). 



Larva somewhat lanceolate, composed of many annulations, spined and 



brown, with 6 pectoral feet. Pupa ochreous. Roesel v. 2. Class 3. t. 5. 



ViBURNi Fayk.—Mars. 224. \3.—Curt. Guide, G. 424. 4. 



Pale castaneous, densely clothed with short, depressed shining 

 griseous hair, and minutely and thickly punctured : antennae 

 black, excepting the base of each joint : eyes and a rhombiform 

 spot in front of the head black : thorax broader than the head, a 

 depressed channel down the centre and the margins brown : ely- 

 tra convex and much broader than the thorax : scutellum and 

 shoulders brown : tibiae with the external edge and the tarsi 

 brown. 



In the Author's and other Cabinets. 



The obconic joints of the antennae distinguish the Galerucae 

 from Adimonia and Luperus, and the 3rd joint is as long as 



the succeeding ones. 



