318 



Mr. R. S. Bugiiall on new Thijsauopfera, 



Ileliothrips brunneipenm's, sp. n. 



Lencjth about 1'5 mm,, linear. 



Colour dark brown ; bead >adb">\\'is1i-l)i"own and abdomen 

 apically lighter. Fore-femora and tibia yellow, lightly tinged 

 with brown ; intermediate and hind femora and tibiae dark 

 brown, basally yellow, the tibiae also yellowish-white distally ; 

 all tarsi whitish-yellow. Fore-wings brown, darkest at base, 

 a light patch in about the third tenth ; hind wings light 

 greyish-brown, with median vein darker ; cilia dark. An- 

 tenna? with basal joint ytdlowish ; 2 brown, 3 to 5 clear 

 lemon-vellow, 6 brown, and style yellowisji-wliite. 



Head more than 1'8 times as broad at broadest (near base) 

 as long. Ciieeks swollen behind eyes, subi)arallel to a 

 collar-like thickening before constriction at base, which runs 

 in an arc close to the hind margin of the eyes ; reticulations 

 behind collar larger, but not so strong. Eyes large, coarsely 

 facetted, and weakly setose. Ocelli large, posterior pair on a 

 line through middle of eyes. Maxillary palj)i 2-segmented. 

 Antennre at least twice as long as the head, lengths of joints 



3 to 8 relatively 26 : 26 : 18 : 10 : 3 : 10,-3 and 4 spindle- 

 shaped, 5 claviform, and 6 globular; style bristle-like. 

 Forked trichomes on 3 and •! curved, exceptionally long and 

 slender, one of the arms on i being 1*7 times the length of 

 that joint. 



Prothorax broader than long, posterior margin from about 

 centre of lateral margins arcuate. Pterothorax larc^e and 

 broad, and about as long as broad. Wings reaching to 

 middle of abdominal segment 8. Fore-wing about 15 times 

 as long as broad through middle, not upcurved distjdly. 

 Setae rather short and slender, dark ; co^ta with 25/26, 

 increasing in length towards apex of wing ; U[>per vein with 



4 near fork and 2 near apex, and lower vein with 1 + 2 -f 1 -|- 

 1 + 1, the last situated towards the end of the fourth fifth — 

 that is, before the first of the two distal bristles of the upper 

 vein. 



Abdomen elongate-ovate, occupying about 0*6 the total 

 length of insect, not broader than the pterothorax. Seg- 

 ments 8 to 10 evenly narrowed to tip ; 9 about 1*8 times as 

 long as 10 ; bristles on 8—10 moderately long, pale. 



Hah. Ceylon, Peradeniya, feeding on the leaves of Lit sea 

 chinensis {A. Rutherford, no. 3618, Ent. Research Couim. 

 uo. 60). 



