FAMILY CLERIDAE 187 



Tillioera assamensis, Stebbing. 



Refeken-ce.— Stebbing {Thamisimus), Some Assam Sal Insect Pests, /wrf. For. Bull. no. ii, p. 307(1908). 



Habitat. — Goalpara, Assam. 



Habits.— The beetle is predaceous in both larval and imago stages on 

 the scolytid sal-tree bark-borer Sphaerutrypes assai>iensis (p. 486). 



Clerus. 



Clerus ? sp. 



Habitat, — North-West Himalaya. 



Tree Infested.— Spruce {Picea morinda). Deota, Tehri Garhwal. 



Beetle.— Head and prothorax dark brown, covered with yellowish hairs ; prothorax closely 



punctured. Elytra three times length of head and prothorax, light yellowish brown in colour ; 



a dark brown transverse patch on the apical half reaching to lateral 



Description. edges, a triangular brown patch on basal area not reaching to sides, 



above this a narrow transverse band placed diagonally, reaching from 



edge to suture, the latter part nearest the apex ; a large dark-brown patch covering most of 



the apical half of elytra, but not reaching to apices ; this patch reaches the sides, and 



thins out along suture in direction of the base. Antennae dark brown. Legs long and 



light yellow. (Insect described from a beetle reared from a larva by myself.) 



Larva.— Pink in colour, tapering at both ends and broadest in middle, the last segment 

 ending in two small processes. Mandibles well developed. Under-surface yellowish pink, 

 lighter in colour than upper. Length, 12.5 mm. 

 (Described from a full-grown larva, which pupated 

 shortly afterwards.) 



Pupa. — Free in pupal-chamber. Head white 

 to pinkish white, vertical ; mouth parts, legs, and 

 antennae all distinct, the two latter pressed 

 against sides and chest, free, white to pale trans- 

 lucent. Prothorax pinkish white. Rest of pupa y\0. 125. — C /erus ? sp. Larva, pupa, 

 a deep reddish pink, slightly lighter - coloured and beetle bred from Spruce. North- 

 beneath ; abdominal segments visible eight, with West Himalaya. (E. P. S.) 

 spiracles placed laterally, the last segment ending 



in two minute white processes. Abdomen scalloped laterally on sides. Length, 12.5 mm. 

 The larva pupated on 15 June. On the i6th the wings had already made their appearance, 

 short, membranous, colourless, and pressed close to sides. 



Immature Beetle.— On 2 July following the pupa assumed the beetle form. The insect 

 was now uniform in colour, a pale yellowish pink ; eyes prominent, black ; punctures on elytra 

 visible ; the legs and antennae free and functional, although still weak. The beetle matured 

 on 6 July. 



I have described above the changes which take place in the development 



of this clerid beetle, from the full-grown larval condition 



Life History. to that of the mature beetle. These were observed 



by myself during a tour made in Jaunsar and Tehri 



Garhwal between May and July 1902. 



I cut the larva from the thick bark near the base of a large standmg 

 girdled dead spruce, which had been, or was at the time, infested by various 



