Orasema costaricensis
Wheeler & Wheeler, 1937
Orasema costaricensis is a of parasitic wasp in the Eucharitidae, first described by Wheeler & Wheeler in 1937. Like other members of the Orasema, it is likely a of larvae, though specific associations for this species remain poorly documented. The species name indicates its Rican origin. Records from the Galápagos Islands suggest some capacity or potential human-mediated introduction.

Pronunciation
How to pronounce Orasema costaricensis: /ɔˈrasɛma kɔstaˌrikɛnˈsɪs/
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Images
Distribution
Rica (type locality); Galápagos Islands (confirmed present). Distribution records are sparse and the may occur more broadly in Neotropical regions.
Host Associations
- Ants (Formicidae) - probable Eucharitidae are obligate of larvae; specific ant for O. costaricensis unknown
Ecological Role
As a member of Eucharitidae, this likely functions as a of colonies, potentially influencing ant in its native range.
Similar Taxa
- Other Orasema speciesCongeneric share similar and ; identification requires examination of minute morphological characters such as antennal segmentation and wing venation
- Other Eucharitidae genera (e.g., Kapala, Pseudochalcura)-level characters include reduced wing venation and specialized larval adaptations for colony entry; -level distinctions rely on antennal structure and body proportions
More Details
Taxonomic note
The was described by George C. Wheeler and Jeanette Wheeler in 1937, with the type locality in Rica. The Orasema contains approximately 50 described species, primarily distributed in the Neotropics.
Research needs
Basic including , larval development, and remain undocumented for this species. The Galápagos record warrants investigation to determine if it represents a native or human-mediated introduction.
Sources and further reading
- BugGuide
- GBIF taxonomy match
- iNaturalist taxon
- NCBI Taxonomy
- Catalogue of Life
- Orasema Simulatrix | Entomology Research Museum
- ooctonus_costaricensis_huber_ht_ucrc_ent_296747_wgright.jpg | Entomology Research Museum
- Primary Type List | Entomology Research Museum
- Destination Monteverde Cloud Forest, Costa Rica: Striking gold and spittle in the cloud forest - Golden Froghopper, Mahanarva costaricensis — Bug of the Week
- Archive — Bug of the Week