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Gesomyrmex incertus
| †Gesomyrmex incertus Temporal range: Priabonian, Late Eocene Bolshaya Svetlovodnaya, Sikhote-Alin, Russia | |
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| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Insecta |
| Order: | Hymenoptera |
| Family: | Formicidae |
| Subfamily: | Formicinae |
| Tribe: | Gesomyrmecini |
| Genus: | Gesomyrmex |
| Species: | †G. incertus |
| Binomial name | |
| †Gesomyrmex incertus Dlussky, Rasnitsyn & Perfilieva, 2015 | |
No formal diagnosis was provided when this species was described. Comparative note is ‘Differs from all known species of Gesomyrmex by combination of elongate head with concave occipital margin and position of eyes’. The diagnostic value of the elongate head is not ascertained by our morphometric investigation, and other characters are questionable based on taphonomy. In the absence of compelling diagnostic features for this species it should be considered a possible synonym of Gesomyrmex hoernesi (Aria et al., 2023).
Identification
Cephalic morphometrics of gynes for relevant fossil Gesomyrmex species. (a) Head length (HL). (b) Normalized head shape (head length/head width, HRN, squares) and normalized relative eye diameter (eye diameter/head length, HERN, diamonds). Abbreviations: flav., flavescens; germ., germanicus; hoern., hoernesi. (Aria et al., 2023, Fig. 4)
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Distribution
This taxon was described from Bolshaya Svetlovodnaya, Sikhote-Alin, Russia (Priabonian, Late Eocene).
Castes
Nomenclature
The following information is derived from Barry Bolton's Online Catalogue of the Ants of the World.
- †incertus. †Gesomyrmex incertus Dlussky, Rasnitsyn & Perfilieva, 2015: 138, fig. 14 (q.) RUSSIA (Eocene).
Description
References
- Aria, C., Jouault, C., Perrichot, V., Nel, A. 2023. The megathermal ant genus Gesomyrmex (Formicidae: Formicinae), palaeoindicator of wide latitudinal biome homogeneity during the PETM. Geological Magazine, 1–11 (doi:10.1017/s0016756822001248).
- Dlussky, G.M., Rasnitsyn, A.P. & Perfilieva, K.S. 2015. The ants (Hymenoptera: Formicidae) of Bolshaya Svetlovodnaya (Late Eocene of Sikhote-Alin, Russian Far East). Caucasian Entomoloigcal Bulletin, 11, 131-152.