86 K. Takahasbi. 



wit hunt lateral or dorsal tubercles. AVings not soft; fore wings with 

 the 3rd obliqne twice forked, subcosta with about 35 long fine hairs in 

 a row alouii the whule length; -itigma short and stout: stigmatic vein 

 curved; the 2n(l oblique nearly straight; hind wings with 2 divergent 

 obliques; booklets 3. Alidomen witli white wax on the side. 

 Cornicles very short, situated on broad hairy cones. Cauda very short 

 and rounded. 



Legs moderately long, with many long fine hairs; tarsi normal. 

 Lengtb of body — 2.0 mm. Antenna — 1.1 mm. 

 Fore wing — 2.5 mm. Width of fore wing — U. 85mm. 



Host. — Ac/inodap/ine pedicellata Hay. 



Distribution. — Formosa (Kwanshirei, Urai). 



I collected manj" specimens on the twigs and leaves in January 

 U)21. 



Tribe Hormaphid'ma. 



Key to subtribes. 



(!) Vertex of the wingless female with a pair of horn-like tubercles. 



Subtribe Oregmini. 



Vertex of the wingless female without a pair of liorn-like tubercles 

 Subtribe Jlonnaphidini. 



Subtribe Oregmini. 



(1 ) Body of the wingless female soft Oregmu Buckt. 



Body of the wingless female hard C'erataph iii 'L\c\ii. 



Key to Formosan species of Oregma. 



(1) Body of the wingless viviparous fomale conspicuously convex, 



without well developed waxglands ' O. bambiicicola a. sp. 



Body of the wingless viviparous female not conspicuously convex, 

 with well developed waxglands (2) 



(2) Wingless viviparous females densely covered with cottony 

 secretions 0. lanigera (Zehnt.) 



