234 



FAMILY TENEBRIONIDAE 



FIG. 156. 



xemiopaca. 

 N.W. Himalaya. 



FlG 



Beetle.Smaller than indosinica. Elongate, somewhat narrow. 

 Black, moderately shining. Head slightly convex, lateral anterior 



margins raised in front of eyes, the ele- 



Description. vation being continued down the inner 



surface of eye, forming a crescent-shaped 



ridge on either side of vertex ; finely punctate ; antennae short. Pro- 

 thorax wider than long, narrower behind ; anterior margin straight, 

 posterior emarginate, sides rounded ; moderately convex, a lateral 

 depression on either side of centre of disk ; finely and closely 

 punctate. Elytra broader than prothorax, widest in apical fourth, 

 thence constricting to apex ; apical portion depressed ; disk mode- 

 rately convex, sloping laterally, surface smooth with longitudinal 

 rows of very fine punctures, at times confluent, placed far apart, the 

 interspaces set with very fine scattered punctures, the sides and 

 posterior declivity with minute granules ; pygidium short, yellow. 

 Under-surface black, shining, strongly and finely punctate. Legs 

 long, rather slender, black, shining ; femora thickened and unarmed. 

 Length, 21 mm. to 23 mm. 



This and three other species of the family have been very 

 kindly described for me by Mr. K. G. Blair, of the British Museum. 



Pupa. Large, thick, elongate, rather curved, whitish yellow. 

 Prothorax large and hood-like ; body segments thick, fleshy, and 

 tuberculate, the last ending in two processes. Legs long and well 

 developed ; antennae short. Length, 37mm. 



I first obtained mature individuals of this beetle 



from the bark and wood of a large Pupa of Setenis semi- 

 Life History. girdled and newly dead spruce-tree P aca - ^-W. Himalaya. 



near Deota in Jaunsar in the middle 



of June 1902. This tree was very badly infested by the great Himalayan 

 Sirex, S. imperialis, and other wood-boring Siricidae. A few days later 

 I obtained mature beetles of 5. indosinica, and pupae which at the time I 

 thought to be those of S. indosinica, from blue-pine trees at Lambatach. 

 I was able to rear one of the pupae, the beetle maturing on 2 July (from a 

 white pupa taken on 19 June). It proved to be an undescribed species of 

 Setenis. The grubs had obviously fed on the wood of the tree, pupating 

 when full-grown deeper down in the wood. 



Setenis laevis, Fairm. 



REFERENCE. Fairm, Notes, Leyd. Mus. xviii, 230 (1896). 



Habitat. Assam. 



Tree Attacked. Sal (Shorea robusta). Haltugaon 

 and Kachugaon, Goalpara. 



Beetle. Elongate, thickened behind. Head and prothorax 

 black, dull ; elytra chestnut brown, moderately shining. Head 



widest in front ; eyes large, set well into sides 

 Description. of head about middle ; strongly punctate and 



rugose, slightly canaliculate anteriorly. Pro- 

 thorax wider than long, narrowest behind, sides rounded ; disk 



Setenis laevis, Fairm. rather flat, with a deep pit placed rather behind the middle on 

 Assam. either side of a fine longitudinal median line ; punctures fine and 



FIG. 



