SOME NEW AND LITTLE-KNOWN EXOTIC THYSANOPTERA 533 



by the presence of a median vein in the wings, and the fact 

 that the sides of the pterothorax are not strongly arcuate as in 

 P. anfeniiatiis. 



Genus PHLCEOTHRIPS Haliday 



We now recognize three somewhat closely allied Malayan 

 species of Phloeothrips which may be tabulated as follows : — 



1. Tube two-thirds the length of head ; all tibiae yellow ; lateral cephalic 



spines set in warts. spinipes Bagnall. 



2. Tube almost as long as, or longer than head ; hind and intermediate 



tibise concolorous with femora ; lateral cephalic spines not set in 

 warts : — 



i. Tube seven-eighths the length of head ; prothorax strongly- 

 convex, and all spines present ; hind and intermediate tibise 

 totally concolorous with femora. similis sp. n. 



ii. Tube one and two-thirds the length of head ; prothorax not 

 convex, spines at posterior angles and posterior marginal 

 pair exceptionally long, others obsolete ; hind and inter- 

 mediate tibia; yellow at tips. longitubus sp. n. 



Phlceothrips similis sp. n. (PL xiv., figs. 15-19). 



$. Length 3'o mm.; breadth of mesothorax 0*5 mm. 



General colour uniform brown ; antennas, excepting basal 

 joints, which are concolorous with head, yellow with a darker 

 tinge at apex ; fore-tibise yellowish and all tarsi yellow. 



Head one and one-third times as long as broad, or as long 

 as the prothorax, slightly constricted near base ; lateral spines 

 minute, not set in warts. Vertex slightly raised, bearing 

 anterior ocellus at the apex; surface finely striate transversely. 

 Eyes finely facetted, large, occupying one-third the length of 

 head. Ocelli large, anterior ocellus overhanging, posterior 

 pair touching margins of eyes, and on a line through their 

 anterior third. Pigmentation of eyes and ocelli deep black. 

 Antennae inserted below vertex, about one and three-quarters 

 the length of head ; joints three to five claviform, three and 

 four being broader than any of the others ; sixth mildly clavi- 

 form, and the two apical joints moniliform or weakly fusiform. 



