TBICHIUS. 249 



Division III.— TRICHIINI. 



The members of this group are generally characterised by a 

 less compact build and a softer condition of the integuments than 

 is found in other Cetonii>^^. The legs are generally long and 

 slender and the whole body is capable of freer movement. The 

 mouth is suctorial and its various parts do not essentially differ 

 from those of the Cetoxiini. The mesosternal epimera do not 

 rise into the angle between the shoulders of the elytra and the 

 pronotum, and the hinder part of the latter is not closely co- 

 adapted to the elytra. The front of the elytra and scutellum form 

 a ridge against which the hind margin of the pronotum is 

 brought to rest. When drawn forward the thorax is thus more 

 freely movable than in the more typical CETOisriiN^. The elytra 

 cover the sides of the abdomen and are not at all cut away behind 

 the shoulders and they have therefore to be raised in the usual 

 manner when the wings are used. 



The larva of the common European representative, Trichius 

 fasciatus, L., is closely like those of the true Cetoniini. This 

 genus is the only one represented in our region. 



Genus TKICHIUS. 



Trichius, Fahricms, Ent. St/st. i, 2, 1792, p. 118; Bnnn., Handb. 

 Ent. iii, 1842, p. 754; ScrvWe, Enci/cL, Meth., Hist. Nat. x, 1825, 

 p. 703 ; Lacord., Gen. Col. iii, 1856, p. 504. 



Type, Trichius fasciatus, L. (Europe). 



Range. Europe, Continental Asia and Japan. 



Body rather loosely articulated, not compact, with long and 

 slender legs. Eyes large and prominent and clypeus long, 

 slightly bilobed. Antennae rather long. Prothorax narrow, not 

 emarginate nor distinctly lobed before the scutellum. Scutellum 

 very short, with curvilinear sides. Elytra broad, not reduced at 

 the sides, with the hind margins separately rounded. Meso- 

 sternum not prominent in front. Front tibiae bidentate. Hind 

 tibiae truncate at the end. Mandible feebly chitinised, with the 

 outer lobe long, thin and straight. Maxilla long, without teeth, 

 thickly fringed with hairs. Mentum long, deeply notched in 

 front, with the palpi rather short. 



J . The abdomen is arched beneath, and the hind tarsus and the 

 club of the antenna are generally longer than in the female. 



2 . There is a strong spinose ridge beyond the middle of the 

 middle tibia. 



The form and pattern are very subject to variation, and some- 

 times strikingly different in the two sexes, but there is no distortion 

 of the middle tibiae of the male as in the genus Gnorimns. 



The European representatives of the genus live during the 

 early stages in decaying tree-stumps. 



