Comadia

Barnes & McDunnough, 1911

agave red worm (larvae of C. redtenbacheri), chinicuil (larvae of C. redtenbacheri), gusano rojo del maguey (larvae of C. redtenbacheri)

Species Guides

11

Comadia is a of carpenter moths (Cossidae) established in 1911, comprising 11 described distributed in North America, particularly Mexico. The genus is best known for Comadia redtenbacheri, whose larvae are economically significant as edible insects (chinicuil or gusano rojo del maguey) and agricultural pests of Agave species. Larvae are internal borers of agave tissues, with a long, non-uniform exceeding one year. are with documented calling and mating . The genus has been subject to taxonomic revision and molecular studies to clarify species boundaries.

Comadia alleni by no rights reserved, uploaded by Sarah Zukoff. Used under a CC0 license.Comadia manfredi by (c) jimeckert49, some rights reserved (CC BY). Used under a CC-BY license.Comadia henrici by (c) Laura Gaudette, some rights reserved (CC BY), uploaded by Laura Gaudette. Used under a CC-BY license.

Pronunciation

How to pronounce Comadia: /koʊˈmædiə/

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

Images

Habitat

Associated with Agave plants; larvae inhabit internal tissues, particularly rhizomes and bases of external leaves. occurs in silken cocoons under soil. Specific documentation exists for C. redtenbacheri in A. salmiana and A. applanata in Mexico.

Distribution

Mexico: documented in Hidalgo, State of Mexico, Querétaro, Zacatecas, and Tlaxcala. The occurs from Guanajuato to Oaxaca based on plant distribution.

Diet

Larvae feed on internal tissues of Agave . larvae of C. redtenbacheri feed on for several days before migrating to plant tissues.

Host Associations

Life Cycle

Long with non-uniform development lasting more than one year. are laid at base of external leaves. Larvae are gregarious, migrating toward rhizome as they mature. Last instar larvae are aposematic. in silken cocoon under soil. emerge, mate, and oviposit within hours.

Behavior

are . Female calling in C. redtenbacheri begins one hour after scotophase start and may continue until 5:30 am. Larvae are gregarious. Last instar larvae release volatile odoriferous secretion and display aposematic coloration.

Ecological Role

Larvae serve as prey for including Lisonnota fascipennis (Ichneumonidae) and Acantholespesia texana (Tachinidae), and are for fungal and bacterial . include ants, rodents, and birds. Larval boring activity damages host Agave plants, affecting plant .

Human Relevance

Larvae of C. redtenbacheri (chinicuil) are harvested for traditional Mexican cuisine, creating economic pressure on wild . Extraction requires sacrificing plants, reducing Agave applanata populations by up to 57% and preventing sexual maturation. under controlled conditions has been developed to reduce environmental impact. Larvae have nutraceutical value: protein hydrolysates show antioxidant activity and ACE inhibitory effects exceeding commercial drugs.

Tags

Sources and further reading