Parasa

Moore, 1860

slug moths

Species Guides

Parasa chloris(Smaller Parasa Moth)
Parasa indetermina(stinging rose moth)

Parasa is a pantropical of slug moths ( Limacodidae) characterized by with green-banded forewings and larvae possessing stinging hairs. The genus was established by Frederic Moore in 1860 and contains numerous distributed across Asia, the Americas, and other tropical regions. Recent taxonomic revisions have clarified the identity of the type species P. chloris and used to resolve relationships among morphologically similar species. The genus includes both and herbivores, with at least one species documented as the first conifer-feeding specialist in the family.

Parasa chloris by (c) Katja Schulz, some rights reserved (CC BY). Used under a CC-BY license.

- 4698 – Parasa chloris – Smaller Parasa Moth (female - paul dennehy) (48426607121) by Andy Reago & Chrissy McClarren. Used under a CC BY 2.0 license.

- 4699 – Parasa indetermina – Stinging Rose Caterpillar Moth - 50373029817 by Wildreturn. Used under a CC BY 2.0 license.

Pronunciation

How to pronounce Parasa: /pəˈrɑːsə/

These audio files are automatically generated. While they are not always 100% accurate, they are a good starting point.

Identification

can be distinguished from similar Limacodidae by the combination of: palpi projecting beyond frontal tuft; forewings rounded at apex with 7, 8, 9 stalked; hindwing with veins 6 and 7 on short stalk or from ; and hind tibia with terminal pair of spurs. The green-banded forewing pattern is characteristic but not unique to the . -level identification requires examination of male genitalia and (COI), as morphologically similar species such as P. chloris and P. indetermina are sympatric and difficult to separate by wing pattern alone.

Images

Habitat

occur in diverse from lowland tropical forests to mid-elevation mountain regions. Some species inhabit restored prairie remnants and oak-hickory forests in North America. At least one species (P. indetermina) has been documented in calcareous fen habitats.

Distribution

Pantropical distribution. Documented from: North America (north-eastern and southern USA), Central America, South America, Asia (China, Taiwan, Japan, India, Southeast Asia), and other tropical regions. Specific type locality of P. chloris established as north-eastern USA, likely southern states, correcting earlier vague 'Amer. mer.' indications.

Host Associations

Picea morrisonicola - larval First record of conifer-feeding in Limacodidae; herbivore in Taiwan (P. undulata group)
Quercus stellata - larval P. indetermina larvae observed on post oak in Missouri prairie remnants
Quercus marilandica - larval P. indetermina larvae observed on blackjack oak
Myrica - larval P. indetermina larval feeding documented

Behavior

Larvae possess stinging hairs for defense. At least one shows background color matching with foliage, suggesting cryptic . activity patterns poorly documented; some species attracted to ultraviolet light.

Ecological Role

Herbivores, with some acting as feeders on conifers—a unique ecological role as the first documented conifer specialist in the . Larval stinging hairs suggest anti- defense function.

Human Relevance

P. lepida (blue-striped nettle , castor slug caterpillar) is a documented pest of multiple crops including coconut, oil palm, castor, coffee, cacao, mulberry, mango, pineapple, pomegranate, and tea in Asia. Larval stinging hairs can cause in humans upon contact.

Similar Taxa

LimacodesSimilar slug caterpillar ; distinguished by wing venation and genitalia
EucleaAnother limacodid with stinging slug caterpillars; larvae often lichen-colored rather than green-banded
ApodaLimacodid with amorphous, nearly shapeless slug caterpillars; distinguished by

Misconceptions

The type P. chloris was long confused with P. indetermina due to similar , despite differing larvae; resolved through and examination. Historical 'Amer. mer.' locality data for P. chloris incorrectly suggested South American origin rather than North America.

More Details

Taxonomic history

Type P. chloris (Herrich-Schäffer, 1854) had confused nomenclatural history with syntypes passing through multiple collections over ca. 180 years. Recent revision designated lectotype and established true type locality in north-eastern USA.

Phylogenetic research

COI barcoding has been employed to delimit boundaries and test monophyly of the , revealing cryptic diversity and supporting taxonomic revisions including P. huachuca stat. nov. and P. cuernavaca stat. rev.

Specialist feeding

The P. undulata group includes the first documented conifer-feeding in Limacodidae, with larvae feeding exclusively on Picea morrisonicola in Taiwan—representing both a -level behavioral novelty and the first specialist herbivore recorded in the .