ON A SECOND COLLECTION OF MALLOPHAGA ETC. 



641 



17. Lipeurus formosanus Uchida. 



Uchida, Journ. Coll. Agric. Imp. Univ. Tokyo, vol. Ill, p. 17g, text fig. 1. 



A female and seven male specimens obtained from Arboricola 

 crudigularis taken on Mt. Suizan, June 20. 



The species was first described by me from a single female speci- 

 men taken from the same host species obtained on Mt. Arisan in 1916. 

 The following is a description of the male : Much smaller than the 

 female ; head narrower, temples less expanded, trabeculae short, blunt, 

 but more distinct than in the female. Antennae with first segment 

 largest, being of about half the length of the remaining segments taken 

 together ; second segment narrower than the first and about two-thirds 

 as long ; third segment shorter than the second, with an angular 

 projection iat distal end ; fourth segment shortest, and fifth segment 

 about equal to third. Abdomen much shorter and narrower than in 

 the female ; sides nearly parallel ; the last abdominal segment large ; 

 posterior parts of lateral margin concave ; the emarginated tip showing 

 on each side an angulated projection bearing three fine hairs : a long 

 and two short hairs on each lateral margin and another long hair on 

 each side of dorsum ; a capitate and somewhat chitinized process pro- 

 jecting from the end of the ventral surface of the last segment. 

 Genitalia well chitinized, reaching from the posterior margin of sixth 

 abdominal segment to the middle of the last segment ; basal plate 

 short, broad ; parameres short, decurved. 



Measurements : 



















mm. 



mm. 



mm. 



mm- 



mm. 



mm- 



Length of body 



2.13 



I.60 



156 



1-55 



I.52 



1.58 



Width of body 



.45 



•30 



•33 



•30 



.29 



•30 



Length of head 



.52 



•47 



.46 



•45 



.46 



•47 



Width of head 



.40 



•33 



•32 



•3? 



•32 



•32 



Length of thorax 



.38 



•35 



•34 



•34 



•34 



•34 



Width of thorax 



•31 



.28 



.28 



.28 



.27 



.28 



Antenna 



.27 



■31 



•30 



•3° 





•30 



