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The Philippine Journal of Science 
1921 
the end of September when the second brood of larvae appear. These 
larvae are full grown by the end of October when they pupate and 
hibernate in the pupal stage, their imagoes emerging at the commencement 
of June of the following year. The ova deposited by these imagoes gen- 
erally hatch in eight or nine days. 
Pupa. — The pupa is contained in an elongated, brown cocoon, 
broad at the bottom and tapering above, which is made of 
extremely tough silk. It is suspended by a long, tough silken 
fiber to the bough of a tree, somewhat in the same manner as 
the cocoon of Rhodinia fugax Butler. 
Local distribution. — Honshu, Musashi Province, Yokohama, 
July ( Pryer ) : Musashi Province, Tokyo, July and August 
(Wileman) . Kyushu (recorded by Leech, and my collector has 
gathered cocoons there). Matsumura records the species from 
Honshu, Shikoku, and Kyushu. 
Time of appearance. — Larva, June to July, September to 
October; imago, June to October. 
General distribution. — Samia cynthia, Malayan districts; S. 
pryeri, Japan; S. walkeri, northern and central China, Man- 
churia, Korea. {Jordan.) 
Genus RHODINIA Staudinger 
Rhodia Moore, Proc. Zool. Soc. London (1872) 578 (nom. prseocc.). 
Rhodinia Staudinger, Rom. Mem. Lep. 6 (1892) 327. 
Rhodinia fugax Butler. 
Plate 1, fig. 6, larva, fifth ? stage; fig. 7, larva, sixth ? stage; fig. 8, 
paired dorsal tubercles on segment 4; fig. 9, tubercles on segments 
11 and 12. 
Japanese names: Usutabi-ga, yama-bishaku, yama-kamasu, ajima-ni- 
shiki, yama-biku. 
Rhodia fugax Butler, Ann. & Mag. Nat. Hist. IV 20 (1877) 480; 
111. Typ. Lep. Het. 2 (1878) 17, pi. 26, fig. 1, S; Pryer, Trans. 
Asiat. Soc. Japan 12 (1883) 52, No. 193; Leech, Proc. Zool. 
Soc. London (1888) 633, No. 251; Staudinger, Rom. Mem. Lep. 6 
(1892) 327; Leech, Trans. Ent. Soc. London (1898) 268, No. 13; 
Staudinger and Rebel, Cat. Lep. Pal. 1 (1901) 126, No. 1027; 
Matsumura, Cat. Insect. Jap. 1 (1905) 47, No. 386; Nawa, Insect 
World [Konchu Sekai (Jap.)] 10 (1906) 277, pi. 8, lai’va, pupa, 
imago ?; Matsumura, Thousand Insects of Japan [Nihon Senchu 
Dzukai (Jap.)] (1909) suppl. 1, 41, No. 66, fig. 2, S; Sasaki, 
Insects Injurious to Japanese Trees [Nihon Jumoku Gaichuhen 
(Jap.)] ed. 3 (1910) pt. 2, 43, pi. 95, ova, larva, pupa, cocoon, imago 
S; Jordan, Seitz’s Macrolep. Faun. Pal. 2 (1911) 213, pi. 34, c, 
S, ?; Wileman, Trans. Ent. Soc. London (1911) 344, No. 327. 
Saturnia diana Oberthur, Bull. Soc. Ent. France VI 6 (1886) 47; 
Staudinger and Rebel, Cat. Lep. Pal. 1 (1901) 126, No. 1027a; 
Jordan, Seitz’s Macrolep. Faun. Pal. 2 (1911) 213, pi. 34, c, S, $• 
