Teleasinae

Genus Guides

Teleasinae is a of minute in the Scelionidae. Members are exclusively parasitoids of ground beetles (Carabidae), making them unique among Scelionidae in this specialization. The subfamily contains approximately 14 and over 480 described worldwide, with Trimorus alone comprising 389 species. Taxonomic placement has shifted historically, having been treated previously as a subfamily of Platygastridae before molecular analyses reclassified Scelionidae as a subfamily within Platygastridae.

Trimorus by (c) Zachary Dankowicz, some rights reserved (CC BY), uploaded by Zachary Dankowicz. Used under a CC-BY license.

Teleasinae by (c) Alan Manson, some rights reserved (CC BY), uploaded by Alan Manson. Used under a CC-BY license.

Pronunciation

How to pronounce Teleasinae: /tɛˈliːəˌsaɪniː/

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Identification

in is pronounced: males possess extremely long, uniformly slender antennae while females have short, distinctly clubbed antennae. Wing is common, with individuals ranging from fully winged to completely wingless (brachypterous), including intermediate forms with reduced, non-functional wing flaps. Body size is minute, rarely exceeding 2 mm and often under 1 mm.

Images

Habitat

Soil and ground surface environments where carabid occur. Found in both natural and agricultural .

Distribution

Worldwide distribution with described from North America, South America, and other regions.

Host Associations

Carabidae - exclusive ; female lay inside carabid eggs

Life Cycle

: females oviposit directly into carabid eggs, with larvae developing internally and consuming the egg contents.

Behavior

Females are ground-active and frequently captured in pitfall traps, suggesting they search for at or below the soil surface rather than flying. Wing correlates with this ground-dwelling habit, with reduced-winged forms common.

Ecological Role

Plays a crucial role in regulating carabid in natural and agricultural . As specialized , they influence ground beetle dynamics and may affect services provided by carabid .

Human Relevance

Potential importance in agricultural pest management through regulation of ground beetle , though direct applications remain unexplored. Presence in pitfall trap indicates they are commonly encountered in biodiversity surveys and ecological monitoring.

Similar Taxa

ScelioninaeAlso in Scelionidae but attack different groups (primarily Orthoptera, Hemiptera, and spider eggs rather than Carabidae); structure and host associations differ.
PlatygastrinaeFormerly placed in the same Platygastridae; distinguished by associations with Cecidomyiidae (gall midges) rather than Carabidae, and different antennal .