A)iliiilMap (if Fm-mnKa.— 3. 55 



noar Kyoto, Jixjian, on June 3, 1923, by tlio author. 



Greenidea teniiicorpus (Okaj.) 

 Tricliofi'qihnm tcui(icori,us. Ola'inui, Bull. Coll. Agr., Imp. Univ. Tokyo, 

 VIIT, l,p. 4 (1908). 



Host in Yoymofn.-C'c.'iaiiopfi'y nxlaonn/'niifri. .".ttacking the lower side of the 

 young leaf. 



Distribution. Formosa: Eotan ; nd Kusukusu in Koshun. 



Japan: Tokyo, Olta-prefecture. 

 Hitherto unrecoided from Fornio-a. 



Many viviparous females, loth winged and wingless, were eolleeted by the 

 author in Kosliim, Formosa, on November 25, 1923. These Formosan specimens 

 agree exactly with those from Japan. 



Greenidea formosana (^faki). 

 (PI. Ill, U, tigs. 1-5) 

 Trichoffijihmii fvniio^anum, Maki, Collection of Essays for Nawa, ji. 13 (1917). 

 Greenidea /(•nnonawi, Takahashi, Apbididae of Formosa, pt. 1, p. 65 (1921) 

 and pt. 2, p. 115 (192:!). 



Nymph of viviparous female. 

 Key to instars. 

 ( 1 ) Antennae 5-joInted; cornicles conical, without hairs; the 7th and 8th abdo- 

 minal si'graents each provided with 2 distinct tubercles The 1st instar, 



Antennae 5 or 6-Jointed; cornicles provided M'ith many long bristles; the 7th 



and 8th abdominal segments without tubercles (2) 



( 2 ) Cornicles al)Out 4 times as long as wide The 2nd instar. 



Cornicles about 5 times as long as wide in the wingless form; wing-pads 



beginning to aj)pear in tlie winged form The 3rd instar. 



Cornicles about 6 times as long as wide in the wingless form, but longer and 



slender, witli well develoi>ed wing-pads in the winged form 



The 4th instar. 



(The first instar) Head pale yellowish. Eyes dark brown. Antennae pale 

 yellowisli, the last joint very slightly dusky. Tliorax pale yellowish, very slightly 

 dusky on the dorsum, except on the middle, of the meso and metathorax:. Abdomen 

 reddish yellow, with a pair of large blick patcjies, the mesal edges of which are 

 often united, on the middle of the dorsum. Cornicles blackish, Cauda pale yellow, 

 Legs pale yellowish, dusky on the tarsi, 



