394 Mr. iv. S. Bagnall on neio Thysanoptera. 



Hah. India, Maddur, Mysore, 30, viii. 1918, and Coimba- 

 tore, 7. ix. 1918^ single females with Dendrothripoides ipoinece, 

 sp. ined., on Ipomea staphylina (^Ramakrishna) . 



Physuthrips aadrewsi, sp. n. 



? . — Length c. 1*4 mm. 



Belonging to the P. vidyatissimus group, having the an- 

 tennal joints 3 and 4 long, slender, and fusiform. 



Colour uniform dark brown ; fore-wings brown, with the 

 ba^al fourth or more light, practically clear. Antenna 

 brown, joint 2 yellowisli distally, 3 wholly light greyish- 

 yellow, and 4 basally greyish-yellow to light yellowish- 

 brown. Anterior legs wholly light greyish-yellow, inter- 

 mediate pair also light, but with the fore margin shaded 

 to a deepish brown — chiefly medianly ; })osterior pair with the 

 femora dark brown, lighter distally, and the tibiaj greyish- 

 yellow. 



Head transverse, dorsal surface irregularly transversely 

 striated ; ocelli |)laced well back, interocellar setge short and 

 stout, about equal in length to the width separating them. 

 Antennaj about 2*5 times as long as the head, relative lengths 

 of joints 2-8 approximately as follows: — 44 : 72 (with pedi- 

 cel) : 68 : 44 : 65 ; 5 : 7. Intermediate joints slender, very 

 approximately of uniform breadth. Maxillary j)alpi long, 

 relative lengths of joints approximately 21 : 12 : 20. 



Pronotum transverse, approximately TS times as long as 

 the head and about 8 as long as broad. Surface trans- 

 versely striated, sparingly and minutely setose, bristles at 

 each hind angle subequal in length, long and stout, between 

 0"55 and 0*6 the length of the pronotum. Legs somewhat 

 stout, especially the anterior pair; regularly setose. Hind 

 tibise with series of spines in the distal two-thirds (or there- 

 abouts) within, closely set, moderately long and stout, and 

 numbering a dozen or more, the terminal pair very long and 

 stout. Setge of fore-wing somewhat long and stou', 1-f-l + l 

 in the distal half of the upper vein, 24-26 and 12-15 on the 

 co.sta and lower vein respectively. 



Abdomen oblong-ovate, terminal bristles long. 



Easily distinguished from vulgatissimus by the coloration 

 of wings and legs. It conies very near indeed to the Japanese 

 P. pallipes, Bagn., and (liff.rs chiefly in the coloration of head 

 and thorax, the longer intermediate antennal joints, the longer 

 pronotum (14 : 10), the longer pronotal bristles, whilst there 

 are differences in the cheetotaxy of the head. Both pallipes 



