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The ant genus Tetramorium Mayr in the Afrotropical region (Hymenoptera, Formicidae, Myrmicinae): synonymisation of Decamorium Forel under Tetramorium, and taxonomic revision of the T. decem species group.

Hita Garcia F, Fisher BL - Zookeys (2014)

Bottom Line: In this study we synonymise the genus Decamorium Forel under Tetramorium Mayr, revise the new T. decem species group by providing a diagnosis of the group, an illustrated identification key to species level, and worker-based species descriptions for all five species, which include diagnoses, discussions, images, and distribution maps.The following species are revised in this study: T. decem Forel, comb. r., T. raptor sp. n., T. uelense Santschi, comb. r., T. ultor Forel, comb. r., stat. r. & stat. n., and T. venator sp. n.In addition, we also designate lectotypes for T. decem, T. uelense, and T. ultor.

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Affiliation: Entomology Department, California Academy of Sciences, 55 Music Concourse Drive, San Francisco, CA 94118, U.S.A.

ABSTRACT
In this study we synonymise the genus Decamorium Forel under Tetramorium Mayr, revise the new T. decem species group by providing a diagnosis of the group, an illustrated identification key to species level, and worker-based species descriptions for all five species, which include diagnoses, discussions, images, and distribution maps. The following species are revised in this study: T. decem Forel, comb. r., T. raptor sp. n., T. uelense Santschi, comb. r., T. ultor Forel, comb. r., stat. r. & stat. n., and T. venator sp. n. In addition, we also designate lectotypes for T. decem, T. uelense, and T. ultor.

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Anterior head showing varying development of the clypeal shield. ATetramorium decem (CASENT0914088) BTetramorium nodiferum (CASENT0217218) CTetramorium simulator (CASENT0914089) DTetramorium aculeatum (CASENT0235778) ETetramorium anodontion Bolton (CASENT0102334) FTetramorium diomandei Bolton (CASENT0901166) GTetramorium hecate Hita Garcia & Fisher (CASENT0248334) HTetramorium melanogyna Mann (CASENT0199931) ITetramorium sericeiventre (CASENT0235773).
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Figure 1: Anterior head showing varying development of the clypeal shield. ATetramorium decem (CASENT0914088) BTetramorium nodiferum (CASENT0217218) CTetramorium simulator (CASENT0914089) DTetramorium aculeatum (CASENT0235778) ETetramorium anodontion Bolton (CASENT0102334) FTetramorium diomandei Bolton (CASENT0901166) GTetramorium hecate Hita Garcia & Fisher (CASENT0248334) HTetramorium melanogyna Mann (CASENT0199931) ITetramorium sericeiventre (CASENT0235773).

Mentions: The reduced clypeal shield seen in Decamorium (Fig. 1A) is not unique to its species. Within the tropical Tetramorium fauna most species have a very well-developed and clearly distinctive clypeal shield (Figs 1F, 1G, 1F, 1I), but there are a number of species, such as Tetramorium nodiferum (Emery) (Fig. 1B), Tetramorium simulator Arnold (Fig. 1C), Tetramorium aculeatum (Mayr) (Fig. 1D), or Tetramorium anodontion Bolton (Fig. 1E), in which this shield is much less pronounced or almost reduced. The clypeal shield generally varies from species to species in its height and the sharpness of its dorsal edge. When the development of this character across several hundred Tetramorium species is considered, Decamorium emerges as one extreme of a cline that ranges from almost no clypeal shield to a very sharp and high shield, such as in the members of the Tetramorium sericeiventre Emery species group (Fig. 1I).


The ant genus Tetramorium Mayr in the Afrotropical region (Hymenoptera, Formicidae, Myrmicinae): synonymisation of Decamorium Forel under Tetramorium, and taxonomic revision of the T. decem species group.

Hita Garcia F, Fisher BL - Zookeys (2014)

Anterior head showing varying development of the clypeal shield. ATetramorium decem (CASENT0914088) BTetramorium nodiferum (CASENT0217218) CTetramorium simulator (CASENT0914089) DTetramorium aculeatum (CASENT0235778) ETetramorium anodontion Bolton (CASENT0102334) FTetramorium diomandei Bolton (CASENT0901166) GTetramorium hecate Hita Garcia & Fisher (CASENT0248334) HTetramorium melanogyna Mann (CASENT0199931) ITetramorium sericeiventre (CASENT0235773).
© Copyright Policy - creative-commons-attribution
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4042819&req=5

Figure 1: Anterior head showing varying development of the clypeal shield. ATetramorium decem (CASENT0914088) BTetramorium nodiferum (CASENT0217218) CTetramorium simulator (CASENT0914089) DTetramorium aculeatum (CASENT0235778) ETetramorium anodontion Bolton (CASENT0102334) FTetramorium diomandei Bolton (CASENT0901166) GTetramorium hecate Hita Garcia & Fisher (CASENT0248334) HTetramorium melanogyna Mann (CASENT0199931) ITetramorium sericeiventre (CASENT0235773).
Mentions: The reduced clypeal shield seen in Decamorium (Fig. 1A) is not unique to its species. Within the tropical Tetramorium fauna most species have a very well-developed and clearly distinctive clypeal shield (Figs 1F, 1G, 1F, 1I), but there are a number of species, such as Tetramorium nodiferum (Emery) (Fig. 1B), Tetramorium simulator Arnold (Fig. 1C), Tetramorium aculeatum (Mayr) (Fig. 1D), or Tetramorium anodontion Bolton (Fig. 1E), in which this shield is much less pronounced or almost reduced. The clypeal shield generally varies from species to species in its height and the sharpness of its dorsal edge. When the development of this character across several hundred Tetramorium species is considered, Decamorium emerges as one extreme of a cline that ranges from almost no clypeal shield to a very sharp and high shield, such as in the members of the Tetramorium sericeiventre Emery species group (Fig. 1I).

Bottom Line: In this study we synonymise the genus Decamorium Forel under Tetramorium Mayr, revise the new T. decem species group by providing a diagnosis of the group, an illustrated identification key to species level, and worker-based species descriptions for all five species, which include diagnoses, discussions, images, and distribution maps.The following species are revised in this study: T. decem Forel, comb. r., T. raptor sp. n., T. uelense Santschi, comb. r., T. ultor Forel, comb. r., stat. r. & stat. n., and T. venator sp. n.In addition, we also designate lectotypes for T. decem, T. uelense, and T. ultor.

View Article: PubMed Central - HTML - PubMed

Affiliation: Entomology Department, California Academy of Sciences, 55 Music Concourse Drive, San Francisco, CA 94118, U.S.A.

ABSTRACT
In this study we synonymise the genus Decamorium Forel under Tetramorium Mayr, revise the new T. decem species group by providing a diagnosis of the group, an illustrated identification key to species level, and worker-based species descriptions for all five species, which include diagnoses, discussions, images, and distribution maps. The following species are revised in this study: T. decem Forel, comb. r., T. raptor sp. n., T. uelense Santschi, comb. r., T. ultor Forel, comb. r., stat. r. & stat. n., and T. venator sp. n. In addition, we also designate lectotypes for T. decem, T. uelense, and T. ultor.

No MeSH data available.


Related in: MedlinePlus