Polybia (Omega), (de Saussure 1854) (de Saussure, 1854)

Borges, Rafael Cabral & Silveira, Orlando Tobias, 2019, Revision of the species-group of Mischocyttarus (Omega) filiformis (de Saussure 1854), with description of three new species (Hymenoptera, Vespidae), Zootaxa 4657 (3), pp. 545-564 : 546-547

publication ID

https://doi.org/ 10.11646/zootaxa.4657.3.7

publication LSID

lsid:zoobank.org:pub:7B2B9390-ABAA-4220-9A0B-35ABC2D29AA6

DOI

https://doi.org/10.5281/zenodo.4330037

persistent identifier

https://treatment.plazi.org/id/03B3D101-FFCA-D855-7A9A-F85AF995FE4E

treatment provided by

Felipe

scientific name

Polybia (Omega)
status

 

The group of M. (Omega) filiformis (de Saussure 1954) ; sensu Silveira (2008).

This species-group is composed of seven species (three of them newly described here) that share the follow- ing characters: posterior part of the head around the occipital foramen forming a deep cavity, its ventral portion horizontal and sharply margined, like a shelf (see Fig. 17 View FIGURES 14–20 ); occipital carina well developed, ocelli positioned as a low isosceles triangle; proepisternum with anterior margin strongly raised and reflexed (but not double-margined); pronotum without lateral fovea, and with anterior lamella strongly raised medially and reflexed, the region immediately posterior without a secondary margin; pronotal carina strongly produced at sides forming lateral humeral lobes, profile from above concave forwards, carina continuous (from side to side), with the lamella high and a little bent backwards at centre, not extended downwards at the sides of the pronotum; mid tibia with a single spur; first metasomal segment variably elongate; male antenna spiral rolled; nest comb as an ordinary cluster of cells.

This species-group can be promptly distinguished from other Mischocyttarus (and other Polistinae) by having a single midtibial spur.

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Hymenoptera

Family

Eumenidae

Genus

Polybia

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