12 '>'■ Tiikahashi. 



Host . — Paederia tomentosa . 



Distriljution. — Formosa (Taihoku, Kagi, Sliirin); Japan (Tokio). 



JIacrosiphum 'tmilacifollac n. sp. 

 Wingless viviparous female. 



Head yellowish l)ro\vu, slightly dusky. Eyes dark red. 

 Antennae and cornicles black. Thorax yellowish brown, dusky on 

 the dorsum. Abdomen shining, brownish black on the dorsum with 

 a pale yellowish patch at the base of the cornicle and at the middle of 

 the dorsum between the cornicles; greenish on the underside. Cauda 

 yellow. Legs yellowish brown, distal halves of femora, apices of 

 tibiae, and tarsi black. Body not elongated, with some very short, 

 slightly knobbed hairs. Head with a few rather short capitate hairs. 

 Frontal tubercles shorter than the 2nd antennal joint. Antennae 

 long and slender; the 1st joint much larger than the 2nd; the 3rd 

 joint with a rather small sensoria near the base and some short stout 

 hairs; the 4th joint somewhat imbricated, lacking sensoria; the 

 relative length of joints as follows: III-80, IV-66, V-o6, VI- 143 

 (23+120). Body lacking lateral tubercles. 



Rostrum reaching a little beyond the middle coxae. Cornicle.s 

 somewhat imbricated, well reticulated on the apical one fifth, 1.5 

 times as long as the Cauda, reaching near the caudal apex, constricted 

 near the apex, gradually broadened towards the base, broadest at the 

 base, about 6 times as long as wide. Cauda ensiform, witli •■> or 4 

 pairs of lateral bristles. 



Legs long and slender, with some moderately long setae. 

 Length of body — 2.0 nun. Antenna — 2.".) mm. 



Cornicle — 0. 03 mm. 



Host. — tSmilax chinensis, attacking the leaf. 



Distribution. — Formosa (Taihoku). 

 Collected by Mr. Sueta. 



