Cephonodes xanthus Rothschild & Jordan, 1903, Novit. zool. 9 (suppl.): 463 (key), 465. Type locality: [Japan:] Loo Choo Islands [Nansei Shoto, Ryukyu Archipelago], Okinawa.
Japan: 13.v-5.vi (Kyushu); 26.vii (Yakushima).
OVUM:
LARVA:
PUPA:
Larval hostplants.
Japan: Shikoku; Kyushu (Cape Sata; Nichinan); Tanegashima; Tokara Island; Ryukyu Archipelago (Amamioshima; Okinawa; Yakushima).
Endemic to Japan.
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