euthydemus

5. Ssp. euthydemus (Fruhstorfer, 1913)¹⁴⁾ [♂, ♀]

= gardineri Fruhstorfer, 1902¹¹⁾ [♂] (➡actinotia, flavicollis ) (Sumatra, etc. )

= centralis Deslisle, 1993⁴⁾ [♂, ♀] (SW. Sumatra (Mt. Dempo))

(Distribution) [Map 79]

INDONESIA (Sumatra) [Aceh] Weh (=We) Is., Mt. Seulawah, Takengon (=Takingeun), Gedong Biara, Seumanjam, Kutacane, Subulussalam, [N. Sumatra] Medan, Sibolangit, Bandar Baru, Sikulikap, Berastagi, Battak Mts., Mt. Sinabung, Karo Hills, Balimbingan, [W. Sumatra] Lembah Harau (=Harau Canyon), Lembah Anai (=Anai Canyon), Padang, Solok, Mt. Kerinci, [Riau] Riau Arch., Lingga Arch. (Lingga Is., Singkep Is.), [Bengkulu] Kepahiang, Bengkulu, [S. Sumatra] Palembang, Mt. Dempo, Lake Ranau area, Belitung (=Billiton) Is., [Lampung] Liwa, Bandar Lampung, (=Telukbetung), Kalianda.

(Episodes of discovery and original description)

Dr. Jordan (1909), in Seitz (ed. Grosse-Schmetterlinge), stated that the Sumatra species was not different from the Malay subspecies ruficollis. In contrast, Fruhstorfer described a new subspecies based on 6♂♂, 7♀♀ from west Sumatra and 5♀♀ from northeast Sumatra in 1913. The subspecific name may be Euthydemus, one of Platon’s early dialogues (384 BC).

(Characteristics)

The subspecies of the Sumatran lineage generally have narrower FW vein-stripes. Black projections on HW in ♂♂ are large in insular subspecies, but small in this mainland subspecies. In ♀♀, the dark discal spots are large and fused together.

(Spotted pattern)

♂: Not obvious different from ssp. astrea from Banyak Islands, as vein-stripes along V^4th on FW does not reach the cell, but black marginal projections on HW are slightly smaller.

♀: Wing ground color dark, with distinct vein-stripes on FW. The vein-stripe bordering the lower side of V^4th on FW does not reach the cell. The dark discal spots in spaces 2 and 3 on HW not elongate as much towards the cell side and there are no brown scales in these spaces.