Theretra tryoni, final instar larva Brown form, Claire Cottage 14/02/2010.
One of our Alocasia patches after many Theretra tryoni larva had matured and pupated there.
During the day larger larvae crawl and sit in the stems of Alocasia, Claire Cottage, 03/03/18
The larvae come out at night to feed - this one has gone in head first. Claire Cottage, 03/03/18
As we are breeding this larva through inside, we have given it a cardboard tube to hide in during daylight. Feb 2019
Theretra tryoni, 3rd instar larva enjoying a feed on Alocasia, 2 April 2017
Theretra tryoni, final instar feeding on Taro, Wonga Beach FNQ, 4 Apr 2005
Theretra tryoni, Claire Cottage, Dorrigo Plateau, NSW. 2 April 2010
T. tryoni pupating, Claire Cottage Dorrigo Plateau, 3 Mar 2019
Cocoon opened to reveal pupa, 4 Apr 2019
A Theretra tryoni pupa 10/01/15 Claire Cottage
3rd instar larva's dorsal horn is long and straight
Green form mature larva's horn is shorter and downward curved
Brown form mature larva's horn is short and downward curved with a white tip.
The following photos show a progression of parastised eggs of T. tryoni and the resultant wasps of the SCELIONIDAE genus Telenomus sp. that hatched out of the eggs. One egg held seven wasps. The wasps measured 1 mm.
Theretra tryoni (Tryon's Hawk Moth) We have found this moth on the Dorrigo Plateau.
Distribution: Queensland & North-eastern New South Wales.
DORRIGO PLATEAU: 10th Dec 2018, 2nd April 2010, hatched 07/04/19,
Breeding season on the Dorrigo Plateau: Thought to be September to April.
Flight habit: Nocturnal - Active at night.
Adult Moth: Colour fawn / shades of light brown; Size at rest - tip of thorax to tip of forewing: 50mm; top of forewing horizontally to tip of other forewing: 42mm
Mature larva: length - ??mm. Colour forms: Final instar: green, orange or brown forms. Eye Spots: 2 equal size on the 1st & 2nd abdominal segments. Other distinguishing features: Two shades of colour on body - darker on top half, lighter below. Dorsal Horn: Brown, short, thick with a white tip, backwards curving.
Interesting Facts: Theretra tryoni seems to pupate in its leaf litter cocoon lying on its back. It would be interesting to see how the emerging moth then negotiates the journey to position itself to safely exit the sparsely webbed cocoon holding leaf litter firmly around it.