Cremastinae

Genus Guides

Cremastinae is a worldwide of within Ichneumonidae. Members are koinobiont endoparasitoids, primarily attacking concealed larvae of Lepidoptera. Several , including Pristomerus, have been used in programs. The subfamily exhibits high diversity in tropical regions, with numerous undescribed species.

Cremastus by (c) Steve Kerr, some rights reserved (CC BY), uploaded by Steve Kerr. Used under a CC-BY license.

Cremastinae by (c) Christina Butler, some rights reserved (CC BY). Used under a CC-BY license.

Cremastinae by (c) Francisco Farriols Sarabia, some rights reserved (CC BY), uploaded by Francisco Farriols Sarabia. Used under a CC-BY license.

Pronunciation

How to pronounce Cremastinae: //krɛˈmæs.tɪˌniː//

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

Images

Habitat

Warm and dry such as coastal areas and heathlands; tropical habitats show highest . Members are frequently collected in agricultural settings including sugarcane crops and secondary forests at both ground and levels.

Distribution

Worldwide distribution with highest diversity in tropical regions. Documented from Australia (especially Northern Queensland and Northern Territories), Madagascar, Afrotropical region, Andean-Amazonian region of Colombia, Rica, Peru, northwestern Andes of Colombia, Iran, and Lithuania.

Host Associations

Lepidoptera - koinobiont endoparasitoidprimarily concealed larvae in tunnels, leaf rolls, buds, and galls
Hesperiidae - koinobiont endoparasitoiddocumented for Creagrura
Coleoptera - koinobiont endoparasitoidsometimes, larvae in tunnels

Life Cycle

Koinobiont endoparasitoid development: larvae develop inside living , allowing host to continue feeding and growing until parasitoid .

Behavior

Some Creagrura have been observed to locate and oviposit in caterpillars when exposed at night rather than when concealed during daylight hours.

Ecological Role

that regulate of Lepidoptera and occasionally Coleoptera larvae. Contribute to natural in both natural and agricultural .

Human Relevance

Several , particularly in the Pristomerus, have been used in programs. High potential for undescribed species useful in pest management remains unexplored due to taxonomic understudying.

Similar Taxa

other Ichneumonidae subfamiliesCremastinae distinguished by combination of morphological characters including fore wing venation and metasomal structure; diagnostic keys available in Townes (1971)

More Details

Taxonomic status

The contains numerous including Pristomerus, Creagrura, Eiphosoma, Temelucha, Trathala, Xiphosomella, and Eutanygaster. Many tropical regions harbor extensive undescribed diversity; for example, 75% of Australian are estimated to remain undescribed.

Research gaps

Basic , associations, and remain poorly known for most outside of Pristomerus. The origin of Australian Pristomerus fauna is unresolved, with possibilities including Southern relict elements or more recent Paleotropical immigration.