582. 

 CLYTHRA TRIDENTATA. 



Order Coleoptera. Fam. Chrysomelidae. 

 Type of the Genus, Chrysomela 4-punctata Linn. 

 Clytura Laich, Fab., Lat., GylL, Curt. — Cryptocephalus Fafi.jMar^. 

 — Chrysomela Linn. — Melolontha Geoff. 



Antennce not longer than the thorax, inserted before the eyes, 

 serrated and slightly pubescent, 11 -jointed, basal joint short, 

 stout and curved at the base, 2nd small, globose, 3rd not larger, 

 cup-shaped, the remainder large, distinctly articulated, cup- 

 shaped or obtrigonate, being produced on the inside, terminal 

 joint smaller, subovate (6). 



Labrum rather oblong, the angles rounded, anterior margin 

 slightly concave and ciliated (1). 



Mandibles short stout and thick, frequently most developed in 

 the males, furnished with 2 large teeth at the apex (2). 

 MaxillcB short, terminated by an ovate lobe, ciliated on the in- 

 side, with another on the outside, a little larger and drooping. 

 Palpi short and subfusiform, 4-jointed and pilose, basal joint 

 small, the remainder short and stout, especially the 2nd which 

 is obtrigonate, 3rd subquadrate, 4th slenderer, ovate, with a 

 gland at the apex (3). 



Mentum small, narrowed a little at the base, the anterior angles 

 greatly excavated to receive the Palpi which are short, pilose 

 and triarticulate, basal joint sublunate, the others longer and 

 equal, the 2nd being somewhat obovate and truncated obliquely, 

 the 3rd elongate -ovate (4). 

 Head short vertical, immersed to the eyes when at rest, face flat : eyes 

 lateral, rather prominent and oval or orbicular. Thorax transverse, 

 broadest at the base, the sides generally marginated, the base lobed in 

 the centre: scuteUuratrigonate, obtuse. Abdomen cy I indric : elytra 

 long and elliptic : wings ample. Legs stout, especially in the males, 

 in which sex the anterior are sometimes very long : thighs short : 

 tibiae the same length, clavate, but not spined at the apex : tarsi di- 

 lated, cushioned beneath and 4-jointed, first 2 joints obtrigonate, Srd 

 bilobed, 4th slender clavate : claws simple (5, afore leg). 

 Larvae living in a pear-shaped hairy case, truncated and open at the 

 smaller end ; furnished with 6 pectoral feet (L, which is copied from 

 Fuessley's Archives). 



Tridentata Linn. — Curt. Guide, Gen. 4S0. 1. 



In the Author's and other Cabinets. 



England is very poor in this fine genus, for in Sweden there 

 are seven native species, and twice as many in France, but 

 many of these are confined to the South. As the spotted spe- 

 cies have been figured by Donovan, and there are great doubts 

 of two others being native insects, I have preferred represent- 



