Enneamerus reticulatus

†Enneamerus reticulatus Temporal range: Bartonian, Middle to Late Eocene K Pa Eo Ol Mi Pl Baltic amber, Baltic Sea region
Scientific classification
Kingdom:	Animalia
Phylum:	Arthropoda
Class:	Insecta
Order:	Hymenoptera
Family:	Formicidae
Subfamily:	Myrmicinae
Tribe:	Crematogastrini
Genus:	Enneamerus
Species:	†E. reticulatus
Binomial name
†Enneamerus reticulatus Mayr, 1868

Identification

Radchenko and Dlussky (2017)

• head dorsum with fine longitudinal rugae, number of rugae between frontal carinae level with the eyes 4-5; surface between rugae densely but not too coarsely reticulated;
• mesosoma coarsely reticulated, petiole and postpetiole less coarsely but densely reticulated;
• antennal scape strongly bent at the base, without any trace of lobe or carina;
• body with quite abundant, long, slightly curved erect to suberect hairs; antennal scape with long abundant curved erect to suberect hairs that distinctly longer than maximum width of scape; legs with abundant decumbent pilosity and sparser and longer subdecumbent hairs.

Firgure 3. Worker of Enneamerus reticulatus Mayr, specimen SIZK K-8937, body in lateral view. A) Photograph. Scale bar – 1 mm.

Firgure 3. Worker of Enneamerus reticulatus Mayr, specimen SIZK K-8937, body in lateral view. B) Line drawing. Scale bar – 1 mm.

Distribution

This taxon was described from Baltic amber, Baltic Sea region, Europe (Bartonian, Middle to Late Eocene) and is also known from Rovno amber, Baltic Sea region, Europe (Priabonian, Late Eocene) (Perkovsky, 2016).

Distribution based on AntMaps

Distribution based on AntWeb specimens

Check data from AntWeb

Biology

Worker

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Nomenclature

The following information is derived from Barry Bolton's Online Catalogue of the Ants of the World.

• †reticulatus. †Enneamerus reticulatus Mayr, 1868c: 100, pl. 5, figs. 102, 103 (w.) BALTIC AMBER (Eocene).

Type Material

• Neotype (designated by Radchenko & Dlussky, 2017:), worker, Baltic Amber (Eocene), No. GZG.BST.04660 (original Klebs’ No. K 1698).

References

• Mayr, G. 1868c. Die Ameisen des baltischen Bernsteins. Beitr. Naturkd. Preuss. 1: 1-102 (page 100, pl. 5, figs. 102, 103 worker described)
• Perkovsky, E.E. 2016. Tropical and Holoarctic ants in late Eocene ambers. Vestnik zoologii 50(2): 111–122 (doi:10.1515/vzoo-2016-0014).
• Radchenko, A., Dlussky, G.M. 2017. New species of the extinct ant genus Enneamerus Mayr (Hymenoptera, Formicidae) and designation of the neotype of E. reticulatus. Asian Myrmecology 9, e009012 (doi:10.20362/am.009012).