Smerinthus tokyonis Matsumura, 1921

Jiang, Zhuo-Heng, Li, Tao, Yan, Ming, Wang, Jia-Xin, Zheng, Xin-Yi & Hu, Shao-Ji, 2024, The life history of Smerinthus minor Mell, 1937, with a review of the East Asian species of the genus Smerinthus Latreille, 1802 (Lepidoptera: Sphingidae), Zootaxa 5551 (3), pp. 453-478 : 463-465

Smerinthus tokyonis Matsumura, 1921 [东ân天ë]

( Figures 10–11 )

Smerinthus tokyonis Matsumura, 1921 , Thousand Insects Japan (Additam.) 4: 751. TL: ‘ Tokyo, Honshu [ Japan]’

Diagnosis. Male ( Figure 10A–B ): Similar to S. caecus , but upperside of body and wings browner. Forewing shorter, apex blunter, edge smoother, with slight protrusion outward on vein M 3. Upperside colour as in S. caecus but darker; pinkish area from basal to medial area faded. Hindwing similar to S. caecus , but black ocellus near tornus larger and complete with a small greyish-blue circle. Underside same as S. caecus , with large brown patch near tornus.

Female: Similar to male, but wings broader, ground pattern darker and more extensive, antennae much slenderer. Male genitalia ( Figure 11A–D ): Similar to S. szechuanus , but uncus slender and curved downward, gnathos slender and straight. Valva narrower and longer. Sacculus almost the same as S. szechuanus , with a sharply pointed harpe. Phallus longer and slenderer than S. szechuanus , apical process markedly constricted basally and recurved anteriorly, with two separate teeth.

Female genitalia: Unknown in this study.

Distribution. Endemic to Japan.

Biological notes. This species was collected in middle to high elevation temperate deciduous broad-leaved forest, attracted to light at night.

Figures

FIGURE 10. Habitus of Smerinthus tokyonis. A–B. male, Kiyosato, Yamanishi-ken, Japan. © The Trustees of the Natural History Museum, London, UK (downloaded from Kitching, I.J. Sphingidae Taxonomic Inventory. http://sphingidae.myspecies. info/. Available online: (accessed on 11 July 2024).

FIGURE 11. Male genitalia of Smerinthus tokyonis, Gozaishodake, Mie-ken, Japan. A. Lateral view; B. Left valve; C. Phallus; D. Anterior lobe of the process. © The Trustees of the Natural History Museum, London, UK (downloaded from Kitching, I.J. Sphingidae Taxonomic Inventory. http://sphingidae.myspecies.info/. Available online: (accessed on 11 July 2024).