13G INSECUTOR INSCITL^i MENSTRUUS 



Genus CLADURA Osten Sacken 

 Cladura nipponensis, new species. 



Head dark gray ; antennal flagellum dark brown ; legs pale 

 brown, the tips of the femora and tibiae scarcely darkened; 

 abdomen dark brown ; male hypopygium with the pleurites 

 long and slender, nearly twice as long as the small pleural 

 appendage. 



Male. — Length, about 5.3-5.5 mm. ; wing, 6.5-6.7 mm. 



Rostrum and palpi pale brown. Antennae with the scapal 

 segments pale brown, the long-oval flagellar segments dark 

 brown; flagellum with thirteen segments, the basal fusion- 

 segment composed of two segments, equaling in length the sec- 

 ond and third taken together. Head dark gray. 



Mesonotum pale yellowish testaceous, the praescutum with 

 three confluent, darker brown stripes. Pleura pale yellowish 

 testaceous. In the paratype the praescutum is not so dark in 

 color. Halteres pale. Legs with the coxae and trochanters 

 pale; femora brownish yellow, the bases more yellowish, the 

 tips scarcely darker; tibiae pale brown, the tips narrowly and 

 indistinctly darkened ; tarsi dark brown ; pubescence of the legs 

 not conspicuous. Wings nearly hyaline, the base and cells C 

 and Sc more yellowish ; veins brown ; macrotrichise on the 

 veins of moderate length only. Venation : Sc^ ending beyond 

 the fork of -^g+sj ^<^2 a very little before this fork; r some- 

 what indistinct ; i?2+3 about equal to that section of /?2 before 

 r; fusion of M^ and Cn^^ about equal to the outer deflection of 

 M^ alone ; petiole of cell M^ about equal to the basal deflection 

 of Cmj ; 2nd Anal vein ending about opposite the base of Rs. 



Abdomen dark brown throughout. Male hypopygium with 

 the pleurites very long, cylindrical, the single pleural appendage 

 only a little more than half the length of the pleurite, slender, 

 tapering gradually to the apex ; gonapophyses in the form of 

 slender, chitinized hooks. 



Habitat. — Japan. 



Holotype, $, Tokyo, November 16, 1919 (R. Takahashi). 



Allotopotype, 9 , December 9, 1919. 



Paratopotype, 3 , November 16, 1919. 



