FAMILY SPHINGIDAE
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Theretra oldenlandiae Fabricius
Sphinx oldenlandiae Fabricius, 1775, Syst. Ent., p. 542.
Theretra oldenlandiae Fabricius; Rothschild & Jordan, 1903: 781.


Theretra oldenlandiae
(.83 natural size)


Diagnosis.
This and Theretra silhetensis Boisduval are similar in size and coloration, and both have a conspicuous broad, dark brown band running obliquely across the forewing from subbasally on the dorsum towards the apex. In oldenlandiae this band is evenly tapered rather than lenticular, is directed towards the costa subapically rather than towards the apex, and is reflected by a similar but narrower band more distally. The dorsal silver band on the abdomen is double rather than single; there are stronger subdorsal streaks on the thorax.

Geographical range. Japan, Indo-Australian tropics to Solomons.

Habitat preference. This is another species of open lowland habitats.

Biology. The larva has been described by Bell & Scott (1937), Dupont & Roepke (1941) and Moulds (1981). It is velvety black, spotted leaden bluish over the abdominal segments, with a yellow dorsolateral band that is strongest over the thoracic segments; on these segments there is a similar ventrolateral band. The ocellar markings break the dorsolateral, those of  A1 and A2 black, ringed with yellow and blue, those of the remaining abdominal segments oblong, reddish, ringed blue. The long, straight horn is black, tipped white.

Recorded host-plants (Bell & Scott, 1937; Pholboon, 1965; Miyata, 1983; Moulds, 1981, 1984; CIE records) are: Alocasia, Amorphophallus, Arisaema, Caladium, Colocasia, Cryptocoryne, Pinellia, Typhonia, Zantedeschia (Araceae); Impatiens (Balsaminaceae); Careya, Planchonia (Barringtoniaceae); Clystostoma (Bignoniaceae); Ipomoea (Convolvulaceae); Hibbertia (Dilleniaceae); Clarkia, Epilobium, Fuchsia, Ludwigia (Onagraceae); Coelospermum, Oldenlandia, Pentas, Richardia (Rubiaceae); Ampelocissus, Ampelopsis, Cayratia, Cissus, Vitis (Vitidaceae).

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