Chetogena

Rondani, 1856

Species Guides

1

Chetogena is a of tachinid flies (Diptera: Tachinidae) comprising . Members are solitary parasitoids that attack various Lepidoptera . Some species exhibit specialized reproductive , including retention in response to host deprivation. The genus has been studied for potential against agricultural pests.

Pronunciation

How to pronounce Chetogena: //kəˈtoʊ.dʒə.nə//

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Habitat

Arctic tundra for C. gelida; agricultural and natural for other .

Distribution

North American Arctic (Ellesmere Island, Canada) for C. gelida; Denmark, Norway, and Sweden based on distribution records.

Host Associations

Life Cycle

Solitary development; limited to one per due to larval competition. Some develop predominantly on final-instar host larvae.

Behavior

Females deprived of for 2–7 days retain one in the uterus where it undergoes embryogenesis. This egg retention allows exploitation of hosts molting within 40 hours after egg receipt, and possibly multiply parasitized hosts.

Ecological Role

regulating of Lepidoptera. retention broadens exploitable host range to include soon-to- hosts.

Human Relevance

Studied for potential against agricultural pests including fall armyworm and cabbage looper.

Similar Taxa

  • ExoristaBoth are tachinid in tribe Exoristini with similar lifestyles. Chetogena can be distinguished by genus-level morphological characters and specific associations.

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