FAMILY SCARABAEIDAE 91 



This insect, both male and female, was taken by Mr. C. 1]. Smales, I.F.S., 



in Pyinmana in Upper Burma. The beetles were found 



Life History. t^irdlin^ young seedlings of Poinciana regia in a nursery, 



thus killing them. The plate shows portions of the 



stems of these young trees completely girdled by the beetles. 



CETONIINAE. 



Rather flat beetles, often of brilliant coloration, and not of particu- 

 larly large size. The colour may be brilliant green or blue or brown, with 

 white or yellow markings and spots. The sexes are similar to one another, 

 the male being without protuberances on the head or thorax. The beetles 

 are many of them diurnal, flying about in the sunlight, and being found 

 on leaves and flowers in the daytime. They are commonly known as 

 the rosechafers. It is in this sub-family that the elytra are joined down 

 the middle suture, and so are elevated as one piece to permit the lower 

 wings to be spread for flight. 



Trigonophorus. 

 Trigonophorus hookeri, White. 



Reference. — White, Proc. Zool. Soc. p. 14, t. 41, f. i (J ; 2 $ (1856). 



Habitat. — Assam Duars. 



Tree Attacked. — Khair (Acacia catechu). Assam. 



Beetle.— Shining green or blue, tibiae and tarsi brown, latter darker. Head small, 



a small depressed bifurcate horn on vertex and another smaller horizontal bifurcate horn on 



front. Prothorax much wider than head, widest behind, finely 



Description. punctate. Scutellum very large, triangular. Elytra widest at base, 



constricted l^ehind humeral angles, apex 



rounded, pygidium exposed, finely punctate. Under-surface shining, 



smooth. Length, 20 mm. to 25 nmi. 



I took this insect very plentifully towards the end of 



May igo6 in areas adjacent to and 



Life History. between the Sunkos and Reidak rivers 



near their debouchment from the 



Bhutan Hills. The beetles were engaged in defoliating 



the khair, many of the trees being loaded with insects. Fig. 53. — Trigotw- 



w^hilst others were entirely leafless. tif''.'" hookeri, 



111 r " mX.&. Assam 



1 do not know on what the larva feeds. Duars. 



