FAMILY CERAMBYCIDAE 379 



Glenea spilota, Thorns. 



References. — Thorns. Class. Longic. p. 58; Lefroy, Ind. Ins. Pests, p. 376 (1909). 



Habitat. — Assam, Jalpaiguri ; Pusa ? (Lefroy). 



Tree Attacked. — Semul {Bomhax nialabaricum) . Assam and Bengal. 



Beetle. — Jiright canary-yellow, studded with black spots, the coloration due to a covering 



■of a fine dense pubescence ; antennae black, legs orange. Head with an elongate median 



black stripe on front and a narrow transverse one on posterior 



Description. margin of vertex. Prothorax with four black spots on disk and one 



on either side. Elytra with seven to nine black spots apiece, the 



apex truncate, with the outer edge produced into a spine. Under-surface paler, with a 



crescent-shaped mark on the side of meso- and meta-thorax and the anterior margins of 



abdominal segments black. Length, 13 mm. to 25 mm. 



This beetle, which is very common, appears on the wing in the hot 



weather. It lays its eggs on the bark of the semul, and 



Life History. the larvae on hatching out bore into the bast and feed 



here and in the sapwood, eating out ramifying galleries, 



which do not seem to have any definite direction. The grubs appear to 



prefer that the wood should be dry, and I have not found them in freshly 



felled green trees. Lefroy also mentions this fact {Indian Insect Pests, 



P- 57^)^ " the larvae being found abundantly in the decaying trunk after 



the plant has died." The insect cannot at present be considered a pest to 



the tree, though the grubs may prove of some importance in depots of 



semul timber, which, owing to its softness, rapidly dries. 



Undetermined Cerambycidae. 



Lamia ? sp. 



Habitat. — Cuddalore, Madras. 



Tree Attacked. — Casuarina {Casnavina cqtiisetifulia). Cuddalore, Madras. 



Beetle. — $ Black, moderately shining. Abdomen very dark red beneath. A short thick 



beetle with a vertical head. Prothorax sculptured and spined above and at sides, widest in 



middle. Elytra wider than hind portion of prothorax, parallel to near 



Description. apex, whence constricted to apex, the elytra thus terminating in a 



blunt point. Elytra entirely cover the base of body. They are 



corrugated and spined at their basal portions, and pitted strongly for the rest of their length. 



First joint of antenna is swollen and well marked. Length jf in. 



Larva. — A thick whitish-yellow grub with blackish-brown bead and black mouth-parts 

 (mandibles), followed by a largely developed segment which is slightly darker yellow than the 

 following ones. These latter taper slightly to the tenth, which is half the size of the prothoracic 

 segment. Last two segments smaller, ending in a blunt point. Length, ix^^gin. Breadth 

 across the prothoracic segment ^^ in. 



This is the beetle whose thick white grubs have been reported as boring 

 into the wood of the roots of casuarina-trees at Cuddalore. 



