TRlCTENOTOMIDjE. 
347 
seized, as no progress can be made till more is known and we can at 
present only estimate their directly injurious effect as adults. 
Trictenotomid.®. 
Antennce long , serrate inside at the apex. Tarsi heteromerous. 
These are large beetles, practically heteromerous Longicornia with 
slightly serrate antennae. They have long bodies, the dark colours 
Fig. 221 .—Trictenotoma childreni, x 1. 
(except Autocrates cenea, Westw., which 
is metallic blue), the general facies of 
many Cerambycid beetles and are found 
in the same habitat. These insects 
are characteristic of the Indo-Malayan 
region, particularly of forest areas. 
Fig. 222.— Trictenotom a 
CHILDRENI LARVA. 
{After Gahan). 
Autocrates has the prothorax spined, the scutellum blunt. Tric- 
tenotoma has the prothorax only angulated, scutellum longer and sharper. 
Very little is known of the life-history of these insects ; they are pro¬ 
bably predaceous in the adult stage. The larva of T. childreni has re¬ 
cently been described and figured by Gahan from Java specimens 
(Trans. Ent. Soc., London, 1908. p. 275) ; we reproduce one figure in the 
hope that it may assist in the recognition of larvae of this family in South 
