Cossinae

carpenter moths, goat moths

Genus Guides

Acossus(carpenterworm moths)
Comadia(agave red worm (larvae of C. redtenbacheri))
Fania
Prionoxystus(carpenterworm moth)
Toronia(Torus)

Cossinae is the nominate of Cossidae, comprising carpenter or goat moths. Larvae of several are significant wood-boring pests, including the carpenterworm (Prionoxystus robiniae) and (Cossus cossus). In Chile, caterpillars of Chilecomadia moorei are commercially harvested as fishing and terrarium pet food under the trade name 'butterworms'. The subfamily has undergone recent taxonomic revision, with Cossulinae separated from Cossinae, though this was not universally accepted initially.

Comadia subterminata by (c) Wendy McCrady, some rights reserved (CC BY), uploaded by Wendy McCrady. Used under a CC-BY license.

Acossus by (c) James Solomon, USDA Forest Service, United States, some rights reserved (CC BY). Used under a CC-BY license.

Comadia alleni by no rights reserved, uploaded by Sarah Zukoff. Used under a CC0 license.

Pronunciation

How to pronounce Cossinae: //ˈkɔs.ɪ.niː//

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

Identification

Identification to and level relies heavily on male and female genitalia , as external characters are often convergent. Distribution maps and detailed locality data are increasingly used in conjunction with morphological characters. Some genera have been moved between Cossinae and Cossulinae, requiring careful attention to current taxonomic placement.

Images

Habitat

Associated with woody vegetation; larvae tunnel in living or dead wood of trees and shrubs. Specific requirements vary by and . The genus Mahomedella occurs in montane regions (Hoggar Mountains, Algeria). Patoptoformis species are found in forested areas of Southeast Asia.

Distribution

Worldwide distribution with concentration in Palearctic, Afrotropical, Oriental, and Neotropical regions. Documented from Pakistan, India, Central Asia (Tajikistan, Kazakhstan), Southeast Asia (Laos, Malaysia/Indonesia via Groenendaelia kinabaluensis), North Africa (Algeria), Southern Africa (South Africa Free State Province), South America (Chile), and Armenia.

Diet

Larvae feed internally on woody plant tissues. Zeuzera have been observed feeding on woody plants; Z. coffeae is a documented pest of walnut (Juglans regia). A report of Z. multistrigata feeding on roots of Cannabis sativa requires confirmation.

Host Associations

Juglans regia - larval food plantwalnut borer (Zeuzera coffeae)
Cannabis sativa - reported larval food plantreported for Z. multistrigata by Mushtaque & Baloch 1981; needs confirmation
woody plants - larval food plantsgeneral association for Zeuzera per Yakovlev 2012

Life Cycle

Complete with , larval, pupal, and stages. Larvae are internal feeders in wood, creating tunnels that may weaken trees. occurs within the larval tunnel.

Behavior

are typically . Larvae are concealed feeders, spending their entire development inside woody substrates. Some are significant pests due to wood-boring damage.

Ecological Role

Larvae act as primary consumers of woody plant material. Some are economically important pests of timber and fruit/nut trees. In Chile, Chilecomadia moorei caterpillars represent a harvested resource for recreational fishing and pet food industries.

Human Relevance

Negative: Several are significant forestry and orchard pests, particularly Prionoxystus robiniae (carpenterworm) and Cossus cossus (). Positive: Chilecomadia moorei caterpillars are commercially harvested in Chile for international trade as 'butterworms' for fishing and terrarium pet food.

Similar Taxa

CossulinaeFormerly included within Cossinae; separated in recent decades based on morphological and molecular characters. Some have been moved between these , and accurate identification requires attention to current tribal and generic placements.
ZeuzeraZeuzera (zeuzerine carpenter moths) have been treated in pest management literature but their precise placement requires verification; they share wood-boring larval habits with Cossinae.

More Details

Taxonomic instability

The separation of Cossulinae from Cossinae has been contentious, with moved between as relationships become clearer. Cossulinae now appears to represent a .

Commercial exploitation

The Chilean (Chilecomadia moorei) represents a rare example of Lepidopteran larvae harvested at commercial for non-food purposes, with international trade in 'butterworms'.

Research gaps

and of most Cossinae remain poorly known; recent taxonomic work has focused on alpha and distribution rather than .