ArHinin.i': op forjiosa. 



25 



Winged viviparous female. 



Yellowish lirowii. Head, eyes, auteuua^, proiiotmn aud mesothoras bLwuk- 

 Wiugs lijaline ; stigma aud voius gray. 



Abdomeu with some dusky bauds and patches ou the dorsum. 



Cornicles lilack. Cauda bi'owuish. Tjc^gs l>rowu, a])ie,al halves of femora, 

 apices of tibia?, aud tarsi l)lack. 



Froutiil tubsrcles very short, souiewhat c^ouvex cm tue inuer side, with 

 s ime short Imstles. AuteuutB iiubrieat<'d, with a few short bristles ; the 1st 

 joint slightly convex on the inner side ; the ^hd provided witli 13 — 14 rather 

 lai'ge, circular s^usoria over the whole l(Mjgth n )t airauged in a row ; the 4th 

 lacking sensoria ; the relative length of joints as follows : III — (Jl, IV — 4.5, 

 V— 37, VI— 97 (13+84). Kostiiun reaching the middle cos;e. R'othorax with 

 a blunt lateral tubercle. Wing veins normal ; oliliques on the hind wing 

 pai'allel ; haiklets 4. Cornicles cylindrical, .slender, as long as the 5tli autenual 

 joint, almost reaching the base of the oauda, imbricated, not reticulatid, 

 gi'adually tapering, 2.7 times as long as the cauda. Cauda 1.5 times as long 

 as %vide, with 3 pairs of lateral bristles. 



Length of body — 1.7 mm. Cornicle — 2.5 mm. 



Antenna — 1.8 mm. 



Host. — Prumis persicn. 



Distribution. — Formosa : Sozjiu. 



Myzus momonis flats'? 

 (PI. V, B, figs, 7—14) 



Mutsumma, Join-s. Coll. Agr. Sapporo, VII, pt. 6, p. 402 (1917). 

 W^ingless viviparoiLS female. 



Blackish brown, s^mewluit tinged with yellow. Eyes and cornicles 

 black. Antenna? yellowish lirown, with the apical half dusky, Cauda brown. 

 Legs yellowish brcwn. Body without hairs. Frontal tulx^rcles moderately 

 convex on the inner side. Auttnma? short, stout, imln'icated, without luvirs ; the 

 3rd joint lacking sensoria ; the relative length of joints as follows : III — 31, 

 IV— 14, V— 9, VI— 34 (9 + 25). Hostrum reac^ung the middle cox;o. Body 

 lacking tuliercles. Cjrnicles rather short, imbricated, c^-liudrical, slightly 



