DAPHNIS HYPOTHOUS HYPOTHOUS (Cramer, 1780)

Female Daphnis h. hypothous. Photo: © BMNH Male Daphnis h. hypothous. Photo: © BMNH

TAXONOMY

Sphinx hypothous Cramer, 1780, Uitlandsche Kapellen (Papillons exot.) 3: 165, pl. 285, fig. D. Type locality: [Indonesia, Maluku,] Amboina [Ambon].


ADULT DESCRIPTION AND VARIATION

Wingspan: 86--120mm. Very like a dark D. nerii, but distinguished by a white spot at the forewing apex; head and collar uniformly dark purple-brown, thorax and first two abdominal segments dark green.


Adult Daphnis hypothous hypothous, Bukit Fraser, Malaysia. Photo: © C.W. Gan. Adult Daphnis hypothous hypothous, Bukit Fraser, Malaysia. Photo: © C.W. Gan. Adult Daphnis hypothous hypothous, Taiwan. Photo: © Felix Lin.

ADULT BIOLOGY

D. hypothous is a very fast flyer, attracted to both sweet-smelling flowers and light, but little else is known of its behaviour.


FLIGHT-TIME

China: ii (Hong Kong); vi (Shandong); 25.vi (Yunnan); vii-viii (Guangdong); 23.vii-13.viii (Hong Kong); ix-xi (Hong Kong); x (Guangdong). Taiwan: iv-v (Kaohsiung Hsien; Pingtung Hsien); 22-25.vii (Pingtung Hsien); ix (Pingtung Hsien). Japan: viii (Ryukyu Archipelago, Tokushima).


EARLY STAGES

OVUM: Very similar to that of D. nerii.

LARVA: Full-fed 60--100mm. Dichromatic: green or pale red. Fully-grown examples from India (Bell & Scott, 1937) are usually pale apple-green, the thoracic segments being darker than the abdominal segments. A white dorso-lateral line, tinged with orange at each end, extends from thoracic segment 2 to the base of the horn, and, on the abdominal segments, is edged with dark green above and sky-blue below. Laterally these segments bear dark green, oblique stripes and yellow dots, with a large, blue eye-spot on thoracic segment 3. The brown, tubercled horn, unlike that of D. nerii, is fully formed, stout, erect and slightly curved, similar in appearance to that of A. convolvuli. Although most larvae are green, some may be pale red. Before pupation, the whole body assumes a plum colour blotched with dark red.

Occurs on bushes, usually near water.


Full-grown green form larva of Daphnis hypothous hypothous. Image: Mell, 1922b Full-grown brown form larva of Daphnis hypothous hypothous. Photo: Mell, 1922b

PUPA: 60--80mm. Similar to that of D. nerii, but with a thin black line running along the proboscis, over the head and along the whole dorsal surface, terminating, in this species, in a broad, triangular cremaster tipped with two points. The spiracles are located in a dark lateral band which runs parallel to two others along the ventral surface of the abdomen. Formed in a loosely spun cocoon among debris on the ground. Does not overwinter.


Pupa of Daphnis hypothous hypothous. Image: Mell, 1922b Pupa of Daphnis hypothous hypothous. Image: Mell, 1922b

Larval hostplants. Unrecorded for China, but usually woody Rubiaceae. Cinchona, Wendlandia and Uncaria have been recoded from India (Bell & Scott, 1937). Records for Nerium are probably erroneous due to confusion with Daphnis nerii.


PARASITOIDS

None recorded.

LOCAL DISTRIBUTION

China: Shandong (Weihai); Sichuan; Yunnan (Mengzi; nr. Jinping, 2155m; Pingbian); Tibet/Xizang (Mutu, Namjagbarwa region, 2190m; Yadong, 2800m); Guizhou (Leishan, 990-1540m); Hunan; Guangdong (Longtou Shan); Hong Kong; Hainan.

Taiwan: Kaohsiung Hsien (Shanping, 640m); Pingtung Hsien (Kenting).

Japan: Ryukyu Archipelago (Tokushima).

A migrant to the north of China; the Shandong specimen was captured by T.B. Fletcher (1899) on 23 June 1898. Multi-brooded in the Oriental region.


GLOBAL DISTRIBUTION

Sri Lanka, southern and northern India, Nepal, Burma/Myanmar, southern China, Taiwan, Thailand, Malaysia and Indonesia: a rare vagrant to the western Palaearctic region.

Also New Guinea, the Solomon Islands and northern Australia as the very distinct subspecies D. h. pallescens Butler, 1875.


Global distribution of Daphnis h. hypothous. Map: © BMNH.

BIOGEOGRAPHICAL AFFILIATION

Palaeotropical; Oriental region.



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© A.R. Pittaway & I.J. Kitching (The Natural History Museum, London)