Uresiphita ornithopteralis

Uresiphita ornithopteralis (Guenée, 1854)
Tree Lucerne Moth
(previously known as : Mecyna ornithopteralis)
PYRAUSTINAE, CRAMBIDAE, PYRALOIDEA

Don Herbison-Evans,
(donherbisonevans@yahoo.com)
and
Stella Crossley

Uresiphita ornithopteralis
(Photo: courtesy of Kristine Hendry, Apsley, Victoria)

This Caterpillar has sparse hairs and is multicoloured: being basically green with yellow stripes along the sides, and black and white spots all over. It has a prominent brown head capsule, with three white stripes on its black collar. It has been found for many years, regularly every year, in a suburban garden in Manly (Sydney, New South Wales) on a particular bush of:

English Broom ( Cytisus scoparius, FABACEAE ),

which is stripped by the brood of Caterpillars. It also has been found feeding on other species of FABACEAE such as:

Montpellier Broom ( Genista monspessulana ),

Purple Pea ( Hovea species ), and

Cocky's Tongues ( Templetonia retusa ).

(Photo: courtesy of Jan MacDonald, Apsley, Victoria)

Thus the caterpillar is an important controlling agent of Broom infestations. However, the caterpillar is also an agricultural pest on:

commercial legumes (such as Peas and Beans).

The caterpillars grow to a length of about 3.5 cms.

(Photo: courtesy of the Macleay Collection, Chau Chak Wing Museum, University of Sydney)

When fully grown, our specimen in Sydney burrowed into the soil at the foot of the foodplant, and there pupated inside a papery dense white cocoon. Another specimen in Melbourne climbed up its container and pupated near the lid. The adult moth emerged after about four weeks in autumn in Melbourne, and then took nearly two days to extend its wings fully.

brown form
(Photo: courtesy of the Joan Fearn, Moruya, New South Wales)

The adult moth appears in two basic forms. One has brown forewings, each crossed by three wiggly black lines, and the other has grey forewings, each with a broad pale submarginal band. Both forms have bright yellow hindwings, each with a black border.

grey form
(Photo : courtesy of Lorraine Jenkins, Port Lincoln, South Australia)

The wingspan is about 3 cms. The labial palps on the head are lengthened and stretched out, and look like a birds beak.

brown form
(Photo: courtesy of CSIRO/BIO Photography Group, Centre for Biodiversity Genomics, University of Guelph)

The species has been found in :

as well as

Norfolk Island,

Australian Capital Territory,

Victoria,

Tasmania,

South Australia.

It is closely related to the overseas pest species : Uresiphita gilvata.

The variations in behaviour and colour suggest that the Australian specimens under the name Uresiphita ornithopteralis are actually a species complex, and further work may show how to distinguish them.

underside
grey form
(Photo : courtesy of Katherine Chuk, Perth, Western Australia)

Curiously, the underside in the natural posture looks like a face (with quite a long nose).

underside looking like a face
grey form
(Photo : courtesy of Katherine Chuk, Perth, Western Australia)