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Key to Old World species of Parabaeus

(Life: Kingdom: Metazoa (animals); Phylum: Arthropoda; Class: Hexapoda; Order: Hymenoptera;  Superfamily: Platygastroidea; Family: Platygastridae; Subfamily: Sceliotrachelinae)

ClassificationIdentification keys


1. Hyperoccipital carina present between the lateral ocelli (distinct from occipital carina) (A, B) 2

- Hyperoccipital carina absent, if carina present between ocelli then clearly part of occipital carina (a, b) 4
 


2. Head and mesosoma covered with small compact plates (A, B, C) Parabaeus armadillus Austin

- Head and mesosoma covered with imbricate (squamate) sculpturing (a) 3
 


3. Base of metasoma with obvious foveate pits (A); occipital carina strong and visible in dorsal view (A); mesoscutum and scutellum evenly convex (B) Parabaeus peckorum Austin

 - Base of metasoma without obvious foveate pits, with bifurcate projecting medial plate (a); occipital carina not visible dorsally; posterior mesoscutum and scutellum raised into a medial plateau-like (a, b), transversely ellipsoidal projection (a); clypeus produced into nasute-like process (b) ...Parabaeus nasutus van Noort
 


4. Anterolateral mesosoma with large pit (A); dorsal mesosoma longitudinally striate (B); metasoma normal, tergite 1 not developed into a horn (B) Parabaeus abyssus Austin

- Anterolateral mesosoma without large pit (a); dorsal mesosomal surface reticulate-coriaceous (may be entirely excavated) (b); tergite 1 in females developed into a horn 5
 


5. Metasomal horn present (females) 6

- Metasomal horn absent (males) 9
 


6. Excavation encompasses entire dorsal length of mesoscutum (A); metasomal horn extending anteriorly over three-quarters of mesosoma (A) Parabaeus austini Buhl

- Mesoscutum with dorsal surface present, excavation restricted to posterior half of mesoscutum (a, b); metasomal horn at most extending over posterior half of mesosoma (a, b) 7
 


7. Metasomal horn longer than dorsal surface of mesosoma (A, B); occipital carina low on posterior head; vertex smoothly rounded (B) Parabaeus quasimodus Austin

- Metasomal horn shorter than dorsal surface of mesosoma (a); occipital carina high on posterior head (a, b); vertex interrupted by occipital carina (a, b) 8
 


8. Metasomal horn barely developed, represented by raised area with longitudinal carinae (A, B), shallow excavation restricted to posterior face of mesosoma (A, B) Parabaeus papei Buhl

- Metasomal horn distinct, two-thirds of dorsal length of mesoscutum (a, b), excavation encompasses c. a quarter of mesoscutal length (a, b) Parabaeus brevicornis Buhl
 


9. Posterior margin of mesosoma broadly pointed in dorsal view, with short longitudinal carinae present along posterior border (A); in lateral view mesosoma gently humped one-third of distance from posterior margin (B) Parabaeus africanus Austin

- Posterior margin of mesosoma rounded in dorsal view, with narrow smooth posterior border containing scattered short setae in pits (a); in lateral view mesosoma without dorsal hump (b) Parabaeus ruficornis Kieffer
 


References

van Noort S, Lahey Z, Talamas EJ, Austin AD, Masner L, Polaszek A, Johnson NF 2021. Review of Afrotropical sceliotracheline parasitoid wasps (Hymenoptera, Platygastridae). In: Lahey Z, Talamas E (Eds) Advances in the Systematics of Platygastroidea III. Journal of Hymenoptera Research 87: 115222. https://doi.org/10.3897/jhr.87.73770

Credits

Key developed by Simon van Noort. Photographs included in the key Simon van Noort (Iziko Museums of South Africa), or Zachary Lahey (OSUC), or Andrew Polaszek (NHMUK)


Web author Simon van Noort (Iziko South African Museum)

 

Citation: van Noort, S. 2023. WaspWeb: Hymenoptera of the Afrotropical region. URL: www.waspweb.org (accessed on <day/month/year>).

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