374 FAMILY CERAMBYCIDAE 



their stems. These wounds have originated from the air-holes of the larva 

 and the large exit-hole made by the beetle. Decay sets in at these points, 

 and is probably accelerated by rainwater. These large wounds are not to 

 be found on trees containing living larvae. 



Mr. Coventry has suggested that the only practical remedy is to cut out 



all attacked stems and collect and destroy the larvae. 

 Protection and t-, , i • n • • • , 



Remedial Measures. ^ "^ damage chiefly ongmates in the young compart- 

 ments, and the removal of attacked stems would be in 

 the nature of a light thinning, which would be beneficial rather than detri- 

 mental to the growing stock. This opinion entirely agrees with my own, 

 and, being that of an officer who has held charge of the plantation, is, I 

 conclude, a feasible one. We have already seen that the stems containing 

 larvae are easily recognized; each stem cut down should be carefully cut up, 

 including the roots if necessary, until the larva is found and destroyed before 

 a fresh one is felled. This work requires the most careful supervision, as 

 upon its being done thoroughly will depend the stamping out of an attack 

 completely. The larvae found should be made to tally with the infected 

 stems cut. A curious feature of the Shahdera attack was the fact that the 

 beetle was not present in the Changa Manga Plantation, only forty miles 

 away. Careful search during several years failed to bring to light a single 

 case of attack on the mulberry at the latter place, and the wood of the tree 

 can thus to a certain extent be sold as timber. The danger of the beetle 

 spreading to Changa Manga was very great, and it was probably only 

 the fact that its life history was worked out and understood, and that 

 measures were taken in time to stamp it out at Shahdera, that prevented 

 the beetle from making its appearance in and getting a hold over the trees 

 at Changa Manga. 



Apriona cinerea, Chev. 



Reference. — Chev. Rev. Zool. p. 416 1852). 



Habitat.— Dehra Dun, N. India. 

 Tree Attacked. — Mulberry {Morns indica). 



Beetle. — Elongate, rather narrow. Uniform greyish to greyish yellow, due to a dense 



pubescence ; the surface beneath black. Head with a median longitudinal impressed line on 



vertex, the front cleft between the eyes ; ist joint of antenna 



Description. swollen and rather long, 2nd very short, 3rd longer than 1st and 



2nd, 4th about equal to ist and 2nd together, rest sub-equal. 



Prothorax wider than long, the sides produced medianly into a long spine pointing downwards, 



the surface rai?ed in more or less parallel transverse irregular wavy ridges. Elytra with 



shoulders produced into a spine ; basal fifth of surface studded with a number of small raised 



shining black points ; the sides constricted apically, the apex terminated in three small spines 



placed somewhat close together. Under-surface clothed with a short yellowish pubescence. 



Length, 28 mm. to 49 mm. 



I have taken this beetle on several occasions in Dehra Dun and neigh- 



o 



bourhood, stripping the bark off the leading shoots and twigs of young 



mulberry plants in a manner very similar to that in which Psiloptera 



fastuosa and Coelosterna scabrata treat the babul (Acacia arabica) (cf. pi. xi). 



