77/} ^SANOP TERA 69 7 



([) Diceratothrips brcvicornis, sp. nov. 



Plate XVIII. figs. 1—3. 



$. Length about yo mm., breadth of mesothora.K o"55 mm. 



Colour shining black, fore-tibiae and all tarsi dark brown, apex of second antennal 

 joint tinged with brown. 



Head one and three-fifth times as long as broad behind eyes ; anterior margin 

 truncate with vertex raised in the form of a hump between the eyes ; cheeks furnished 

 with a few short bristles, slightly widened behind the eyes and gently narrowed to 

 base ; surface transversely striate. Eyes finely faceted, rounded and occupying 

 laterally about one-quarter the length of head ; post-ocular bristles long. Ocelli large, 

 anterior ocellus on the extreme apex of vertex, overhanging ; posterior pair on a line 

 drawn through the anterior third of eyes and touching their inner margins. Pair of 

 spines on forehead short, set close to the apical margins of the eyes and scarcely 

 reaching to the apex of the first antennal joint. Antenna about one and one-half times 

 the length of the head, separated at base, and inserted under the vertex; third joint 

 only twice the length of the second and practically sub-equal with the fourth, being but 

 very slightly longer ; fifth about three-quarters the length of the fourth ; sixth, five- 

 sixths of fifth ; seventh, four-fifths of sixth, and the apical joint about three-quarters 

 the length of the penultimate. Sense-cones long and acute, apparendy a pair on 

 each of the joints three to six ; hairs long and slender. 



Prothorax about five-eighths the length of the head and one and three-quarters as 

 wide as long ; fore-margin narrowly emarginate, and a depressed transverse line near 

 fore-margin slighdy foveolate at each end. Sides diverging to base, and a shallow 

 fovea behind each of these depressions. Bristles at each posterior angle long and very 

 slender, moderately strong ; posterior-marginal pair long, mid-lateral pair not quite so 

 long and equally slender ; those at anterior angles very short and stout, and anterior- 

 marginal pair obsolete. Pterothorax a little longer than broad ; side ot metathorax 

 conspicuously reticulated ; wings coriaceous, reaching to the base of tube, wholly of a 

 smoky-brown colour. Fore-coxa with one conspicuous but short spine, tore-femur 

 swollen, and without strong spines within ; fore-tibia moderately stout, with two short 

 bristles below knee, and fore-tarsus armed with a short, sharp tooth. Hind and inter- 

 mediate legs moderately long ; femora broadened laterally, with a series of fairly long 

 brisdes on the outer edee ; tibia with one long slender brisde without, near tarsus, and 

 one long and one shorter bristle below knee. Intermediate-tibia with at least one, and 

 hind-tibia with a few short and moderately stout spines near tarsus. 



Abdomen slightly broader than the mesothorax, narrowing from the fifth segment 

 to the base of tube. Tube about one and one-eighth times as long as the head and a 

 little more than four times as long as broad at base, sharply constricted just before 

 apex ; terminal hairs weak and light-coloured, about two-thirds the length of the tube. 



