HOME
The Info List - Agroecomyrmecinae



--- Advertisement ---


(i)

See text

AGROECOMYRMECINAE is a subfamily of ants containing two extant and two fossil genera. The subfamily was originally classified in 1930 by Carpenter as AGROECOMYRMECINI, a Myrmicinae
Myrmicinae
tribe. Bolton raised the tribe to subfamily status in 2003, suggesting that Agroecomyrmecinae might be the sister taxon to Myrmicinae. It has since been discovered to be one of the earliest lineages of ants, a clade from the basal polytomy for all ants. In 2014, the subfamily was expanded to two tribes. The tribe Ankylomyrmini was moved from the subfamily Myrmicinae
Myrmicinae
to Agroemyrmecinae.

CONTENTS

* 1 Tribes and genera

* 2 Taxonomy

* 2.1 Distribution

* 3 Notes * 4 References * 5 External links

TRIBES AND GENERA

* AGROECOMYRMECINAE Carpenter, 1930

* Agroecomyrmecini Carpenter, 1930

* †_ Agroecomyrmex _ Wheeler, 1910

* †_ Agroecomyrmex duisburgi _ Wheeler, 1910

* †_ Eulithomyrmex _ Carpenter, 1935

* †_ Eulithomyrmex rugosus_ Carpenter, 1930 * †_ Eulithomyrmex striatus_ Carpenter, 1930

* _ Tatuidris _ Brown & Kempf, 1968

* _ Tatuidris tatusia _ Brown & Kempf, 1968 (=_T. kapasi_ Lacau -webkit-column-count: 2; column-count: 2;">

* large mandibles with mandibular masticatory margins that oppose at full closure but do not overlap * eyes at extreme posterior apex of deep antennal scrobes * clypeus very broadly triangular, broadly inserted between the frontal lobes * antennal sockets and frontal lobes strongly migrated laterally, far apart and close to lateral margins of the head * mesotibia and metatibia with pectinate spurs * short and compact mesosoma * a sessile petiole , in posterior view the tergite and sternite not equally convex * an abdominal segment III (postpetiole) without tergosternal fusion, segment large and very broadly articulated to segment IV, * a helcium in frontal view with the sternite bulging ventrally and overlapped by the tergite * an abdominal segment IV with a complete tergosternal fusion, * abdominal segment IV with a stridulitrum on the pretergite * the sternite of abdominal segment IV is reduced, the tergite is much larger than the sternite and strongly vaulted

The subfamily rank of the armadillo ants was reassessed by Baroni Urbani & de Andrade (2007) in their last systematic assessment of the dacetines . They analyzed a morphological dataset that included former dacetines, basicerotines , phalacromyrmecines , and _Tatuidris_, as well as other non- Myrmicinae
Myrmicinae
taxa such as the Australian genus _Myrmecia _ and the Neotropical genus _ Pseudomyrmex _. This work was the first attempt to include _Tatuidris_ as a terminal taxon in a morphological cladistic analysis. In their study, Baroni Urbani -webkit-column-count: 2; column-count: 2;">

* mandibles at rest opposing at least in part, instead of crossing * a mandibular-torular index < 130 * reduction of maxillary palps from double-jointed to single-jointed * reduced male mandibles * presence of a two-segmented antennal club * reduced number of antennal joints

In addition, two autapomorphies (a differently shaped petiolar tergum and sternum , and the eyes at or close to the apex of the antennal scrobe) separated _Tatuidris_ from all other extant ant genera included in their study.

Unlike phylogenetic studies based on morphological traits, molecular analyses of the internal phylogeny of the ants have given strong evidence that the armadillo ants are neither closely related to nor nested within the Myrmicinae. Brady _et al_. (2006), Moreau _et al_. (2006) and Rabeling _et al_. (2008) reconstructed phylogenetic trees with the agroecomyrmecines inside the 'poneroid' group of subfamilies, close to the Paraponerinae , and gave support for the exclusion of the genus from the Myrmicinae, a subfamily located inside the 'formicoid' clade. Given the early appearance of the Agroecomyrmecinae
Agroecomyrmecinae
in the geologic record, the similarities of armadillo ants to Myrmicinae
Myrmicinae
were hypothesized to represent convergence and/or retention of plesiomorphic forms.

Recently, Keller (2011) challenged the phylogenetic relationships of the poneromorph subfamilies (including _Tatuidris_).

DISTRIBUTION

According to Brown ">

* ^ This character was described incorrectly by Bolton (l.c.); in _Tatuidris_ the tergosternal suture of the abdominal segment IV is strong but not fused.

REFERENCES

* ^ "Subfamily: Agroecomyrmecinae". _antweb.org_. AntWeb . Retrieved 3 January 2015. * ^ Carpenter, F. M. 1930. The fossil ants of North America. _Bulletin of the Museum of Comparative Zoology_ 70:1-66. PDF 123533 * ^ Ward, P. S. (2007). "Phylogeny, classification, and species-level taxonomy of ants (Hymenoptera: Formicidae)". _ Zootaxa _. 1668: 549–563. * ^ "Genus: Tatuidris". _antweb.org_. AntWeb . Retrieved 29 August 2013. * ^ Ward, Philip S.; Brady, Sean G.; Fisher, Brian L.; Schultz, Ted R. (July 2014). "The evolution of myrmicine ants: phylogeny and biogeography of a hyperdiverse ant clade (Hymenoptera: Formicidae)". _Systematic Entomology_. 40 (1): 61–81. ISSN 1365-3113 . doi :10.1111/syen.12090 . * ^ _A_ _B_ Donoso 2012 , p. 61 * ^ Bolton 2003 , p. 51 * ^ Donoso 2012 , pp. 61–62 * ^ _A_ _B_ _C_ Donoso 2012 , p. 62 * ^ Baroni Urbani & de Andrade 2007 , p. 78 * ^ Baroni Urbani & de Andrade 2007 , pp. 80–81 * ^ Ward 2007 , pp. 555–557 * ^ Ward 2011 , p. 23 * ^ _A_ _B_ _C_ Donoso 2012 , p. 63 * ^ Keller 2011 , p. 73 * ^ Brown & Kempf 1968 , p. 186 * ^ Lacau et al. 2012 , p. 4 * ^ Vasconcelos & Vilhena 2002 , p. 278 * ^ Bolton, B. (1981). "A revision of six minor genera of Myrmicinae
Myrmicinae
(Hymenoptera: Formicidae) in the Ethiopian zoogeographical region.". _Bulletin of the British Museum (Natural History). Entomology_. 43 (4): 245–307.

* Baroni Urbani, C.; de Andrade, M.L. (2007), "The ant tribe Dacetini: Limits and constituent genera, with descriptions of new species", _Annali del Museo Civico di Storia Naturale "G. Doria"_, 99: 1–191 * Bolton, B. (2003), _Synopsis and classification of Formicidae_, Memoirs of the American Entomological Institute, 71, The American Entomological Institute, pp. 1–370 * Brady, S.G.; Schultz, T.R.; Fisher, B.L.; Ward, P.S. (2006), "Evaluating alternative hypotheses for the early evolution and diversification of ants", _Proceedings of the National Academy of Sciences _, 103: 18172–18177, PMC 1838725  _, PMID 17079492 , doi :10.1073/pnas.0605858103 * Brown, W. L., Jr.; Kempf, W. W. (1967), "Tatuidris, a remarkable new genus of Formicidae (Hymenoptera)" (PDF), Psyche _, 74: 183–190, doi :10.5281/zenodo.27017 * Donoso, D.A. (2012), "Additions to the taxonomy of the armadillo ants (Hymenoptera, Formicidae, _Tatuidris_)" (PDF), _ Zootaxa _, 3503: 61–81 * Keller, R.A. (2011), "A phylogenetic analysis of ant morphology (Hymenoptera: Formicidae) with special reference to the poneromorph subfamilies", _ Bulletin of the American Museum of Natural History _, 355: 1–90, doi :10.1206/355.1 * Lacau, Sébastien; Groc, Sarah; Dejean, Alain; Oliveira, Muriel L. de; Delabie, Jacques H. C. (2012), "_ Tatuidris kapasi_ sp. nov.: a new armadillo ant from French Guiana (Formicidae: Agroecomyrmecinae)", _Psyche _, 2012: 1–6, doi :10.1155/2012/926089 * Moreau, C.S.; Bell, C.D.; Vila, R.; Archibald, S.B.; Pierce, N.E (2006), "Phylogeny of the ants: diversification in the age of angiosperms", _Science _, 312: 101–104, PMID 16601190 , doi :10.1126/science.1124891 * Rabeling, C.; Brown, J.M.; Verhaagh, M. (2008), "Newly discovered sister lineage sheds light on early ant evolution", _Proceedings of the National Academy of Sciences of the United States
United States
of America_, 105: 14913–14917, PM