Ribbed Case Moth - Hyalarcta nigrescens

Family Psychidae

This page contains information and pictures about Ribbed Case Moths that we found in the Brisbane area, Queensland, Australia.

Case length 50mm                                                                                      

 

Ribbed Case Moth feeds on Gum tree leaves Eucalyptus sp. 

 

 

The bag was usually found hanging from gum tree leaf or twig. Unlike other species in this Case Moth family, this bag moth caterpillars make their case with silk only, without any plant materials attached. They made bag with seven prominent longitudinal ribs.

 

 

The female adult is wingless and never leave her case. The male is black in colour with transparent wings and light brown antenna. 

 

A small Ribbed Case Moth 

   

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Reference:

1. Hyalarcta nigrescens - Caterpillars of Australian Moths - Don Herbison-Evans & Stella Crossley, 2005.

2. Moths of Australia - I. F. B. Common, Melbourne University Press, 1990, p180.

3. REVISION OF THE AUSTRALIAN PSYCHIDAE - MEYRICK. E and LOWER O B. (1907) (Hyalarcta nigrescens).

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Last updated: July 16, 2011.