Type

Exotic

Taxonomy

Isotenes miserana (Walker) (Tortricidae: Tortricinae: Archipini)

Common names: orange fruit borer

Synonyms: absumptana (Teras)

Adult Recognition

FWL: 8.0-11.0 mm

Forewings are light brownish gray with brown or gray fasciatefasciate:
a wing pattern that is comprised primarily of transverse bands (fasciae)
markings. Males have a forewing costal foldforewing costal fold:
a flap or fold at the base of the forewing that contains specialized sex scales
. Hindwings are pale brown.

Male genitalia are characterized by valvaevalvae:
plural of "valva"
that appear to be twisted dorsally. Female genitalia are characterized by a twisted ductus bursaeductus bursae:
a membranous tube connecting the ostium bursae to the corpus bursae
and a single dagger-like signumsignum:
a sclerotized projection or patch on the interior of the corpus bursae
in the corpus bursaecorpus bursae:
a dilated membranous sac at the anterior end of the bursa copulatrix
.

Larval Morphology

The following account is summarized from Dugdale et al. (2005).

Late instar larvae are pale cream with a reddish-brown line running along the SD setae and faint reddish-brown markings on each segment dorsaldorsal:
upper, to the top, on the back
to the pale D setal pinaculapinacula:
flattened sclerotized plates on a caterpillar that bear the setae
. The head and thoracic legs are dark brown. The prothoracic shieldprothoracic shield:
a sclerotized plate on the dorsal surface of the prothorax
is dark brown posteriorly, becoming pale cream anteriorly.

Similar Species

Adults may appear similar to other gray-brown archipines with a fasciatefasciate:
a wing pattern that is comprised primarily of transverse bands (fasciae)
forewing pattern. A genitalic dissection can be used to confirm identity. Examples of superficially similar species on this site are Acleris senescens, Cnephasia spp., and Decodes spp.

Biology

The following account is summarized from Dugdale et al. (2005).

Isotenes miserana completes several generations per year. Generations are overlapping and adults may be present year-round in some locations.

Females lay eggs in masses and surround them with "fences" constructed from specialized scales on the abdomen. Larvae tunnel into fruit and feed just below the skin; they may also feed on buds and young leaves. Pupation occurs in the larval feeding shelter.

Larvae of I. miserana are polyphagous and have been recorded feeding on citrus, camellia, macadamia, peach, rose, and a variety of other plants in at least 14 families.

Host plant	Host plant family	Reference(s)
Melodorum sp.	Annonaceae	Common 1990Common 1990: Common, I. F. B. 1990. Moths of Australia. Melbourne University Publishing. 535 pp.
Nerium sp.	Apocynaceae	Common 1990Common 1990: Common, I. F. B. 1990. Moths of Australia. Melbourne University Publishing. 535 pp.
Marsdenia sp.	Asclepiadaceae	CSIRO card file
Lupinus sp.	Fabaceae	Common 1990Common 1990: Common, I. F. B. 1990. Moths of Australia. Melbourne University Publishing. 535 pp.
Pultenaea sp.	Fabaceae	Common 1990Common 1990: Common, I. F. B. 1990. Moths of Australia. Melbourne University Publishing. 535 pp.
Premna sp.	Lamiaceae	Common 1990Common 1990: Common, I. F. B. 1990. Moths of Australia. Melbourne University Publishing. 535 pp.
Cinnamomum sp.	Lauraceae	Common 1990Common 1990: Common, I. F. B. 1990. Moths of Australia. Melbourne University Publishing. 535 pp.
Litsea sp.	Lauraceae	Common 1990Common 1990: Common, I. F. B. 1990. Moths of Australia. Melbourne University Publishing. 535 pp.
Toona sp.	Meliaceae	Common 1990Common 1990: Common, I. F. B. 1990. Moths of Australia. Melbourne University Publishing. 535 pp.
Ficus benjamina	Moraceae	Fletcher 1921Fletcher 1921: Fletcher, T. B. 1921. Life histories of Indian insects, Microlepidoptera. II. Carposinidae, Phaloniadae, Tortricidae and Eucosmidae. Mem. Dept. Agric. India, Entomol. Ser. 6(2): 33-68.; Meyrick MS 1938Meyrick MS 1938: Meyrick MS 1938. Unpublished manuscript by E. Meyrick at BMNH, data captured by Gaeden Robinson.
Ficus sp.	Moraceae	Diakonoff 1939aDiakonoff 1939a: Diakonoff, A. 1939a. The genera of Indo-Malayan and Papuan Torticidae. Zoologische Mededeelingen (Leiden). 21: 111-240.
Morus sp.	Moraceae	Common 1990Common 1990: Common, I. F. B. 1990. Moths of Australia. Melbourne University Publishing. 535 pp.
Aegiceras corniculatum	Myrsinaceae	Common 1990Common 1990: Common, I. F. B. 1990. Moths of Australia. Melbourne University Publishing. 535 pp.
Pinus merkusii	Pinaceae	Diakonoff 1941aDiakonoff 1941a: Diakonoff, A. 1941a. Tortricidae chiefly from the collection of the Institute for Plant Diseases at Buitenzorg. Treubia. 18: 377-392.
Macadamia sp.	Proteaceae	Common 1990Common 1990: Common, I. F. B. 1990. Moths of Australia. Melbourne University Publishing. 535 pp.
Malus sp.	Rosaceae	Common 1990Common 1990: Common, I. F. B. 1990. Moths of Australia. Melbourne University Publishing. 535 pp.
Prunus sp.	Rosaceae	Common 1990Common 1990: Common, I. F. B. 1990. Moths of Australia. Melbourne University Publishing. 535 pp.
Rosa sp.	Rosaceae	Common 1990Common 1990: Common, I. F. B. 1990. Moths of Australia. Melbourne University Publishing. 535 pp.Host plant table (embedded) View full screen host table here Distribution Isotenes miserana is a native of Australia (Northern Territory and Queensland). It has been introduced to New Zealand and South Asia. Male Male Male genitalia previous next