| Royidris | |
|---|---|
 | |
| Royidris robertsoni worker | |
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Insecta |
| Order: | Hymenoptera |
| Family: | Formicidae |
| Subfamily: | Myrmicinae |
| Tribe: | Crematogastrini |
| Genus: | Royidris Bolton & Fisher, 2014 |
| Type species | |
| Monomorium robertsoni Heterick, 2006 | |
| Diversity [1] | |
| 15 species | |
Royidris is a Malagasy genus of ants in the subfamily Myrmicinae. Described in 2014, the genus contains 15 species endemic to Madagascar. [2]
Queens are known for R. admixta, R. diminuta, R. notorthotenes, R. peregrina, and R. shuckardi, plus two unassociated forms. Alate when virgin, considerably larger than the worker. Males are known only for R. notorthotenes and R. peregrina. About the same size as the worker or slightly smaller, much smaller than the queen. [2]
The species included in this genus exhibit a habitus that is convergent on some groups of Monomorium . In his study of the Afrotropical members of that genus Bolton (1987) noted two indeterminate Madagascan species which had a high palp formula (5,3), the highest attributed to Monomorium, but did no further analysis of these odd species because the focus of the survey was the extensive Afrotropical fauna. Heterick (2006), in his revision of the Malagasy species of Monomorium, recognised the peculiarity of the high palp formula and utilised it, together with some other characters, to define his M. shuckardi group, all members of which are now transferred to Royidris. No unambiguous apomorphy can be stated for Royidris, and in fact its habitus is similar to that commonly seen in Monomorium. [2]
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Adetomyrma is a genus of ants endemic to Madagascar. Workers of this genus are blind. The type species Adetomyrma venatrix was described in 1994, with the genus being an atypical member of its tribe, the Amblyoponini. This tribe includes the Dracula ants, members of which can feed on the hemolymph of larvae and pupae.
Myrmicinae is a subfamily of ants, with about 140 extant genera; their distribution is cosmopolitan. The pupae lack cocoons. Some species retain a functional sting. The petioles of Myrmicinae consist of two nodes. The nests are permanent and in soil, rotting wood, under stones, or in trees.
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Monomorium is a genus of ants in the subfamily Myrmicinae. As of 2013 it contains about 396 species. It is distributed around the world, with many species native to the Old World tropics. It is considered to be "one of the more important groups of ants," considering its widespread distribution, its diversity, and its variety of morphological and biological characteristics. It also includes several familiar pest species, such as the pharaoh ant and the flower ant.
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Leptomyrmex niger is a species of ant in the genus Leptomyrmex. Described by Carlo Emery in 1900, the species is endemic to New Guinea.
Leptomyrmex rufipes is a species of ant in the genus Leptomyrmex. Described by Carlo Emery in 1895, the species is endemic to Australia.
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This article incorporates text from a scholarly publication published under a copyright license that allows anyone to reuse, revise, remix and redistribute the materials in any form for any purpose: Bolton, Barry; Fisher, Brian L. (2014), "The Madagascan endemic myrmicine ants related to Eutetramorium (Hymenoptera: Formicidae): taxonomy of the genera Eutetramorium Emery, Malagidris nom. n., Myrmisaraka gen. n., Royidris gen. n., and Vitsika gen. n.", Zootaxa , 3791 (1): 1–99, doi: 10.11646/zootaxa.3791.1.1 , PMID 24869996 Please check the source for the exact licensing terms.