''Pheidole jonas'' is a

species In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate s ...

ant Ants are eusocial insects of the family Formicidae and, along with the related wasps and bees, belong to the order Hymenoptera. Ants evolved from vespoid wasp ancestors in the Cretaceous period. More than 13,800 of an estimated total of 22 ...

in the

subfamily In biological classification, a subfamily (Latin: ', plural ') is an auxiliary (intermediate) taxonomic rank, next below family but more inclusive than genus. Standard nomenclature rules end subfamily botanical names with "-oideae", and zoologi ...

Myrmicinae 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 ...

Habitat and distribution

''Pheidole jonas'' is known only from the

Comoros Islands The Comoro Islands or Comoros (Shikomori ''Komori''; ar, جزر القمر , ''Juzur al-qamar''; french: Les Comores) form an archipelago of volcanic islands situated off the southeastern coast of Africa, to the east of Mozambique and northwe ...

and

Mayotte Mayotte (; french: Mayotte, ; Shimaore: ''Maore'', ; Kibushi: ''Maori'', ), officially the Department of Mayotte (french: Département de Mayotte), is an overseas department and region and single territorial collectivity of France. It is loc ...

. It was collected mostly from

rainforest Rainforests are characterized by a closed and continuous tree canopy, moisture-dependent vegetation, the presence of epiphytes and lianas and the absence of wildfire. Rainforest can be classified as tropical rainforest or temperate rainfores ...

leaf litter Plant litter (also leaf litter, tree litter, soil litter, litterfall or duff) is dead plant material (such as leaves, bark, needles, twigs, and cladodes) that have fallen to the ground. This detritus or dead organic material and its constituent ...

, but also from rotten logs, under moss, and above ground in rainforest and montane rainforest in elevations between 20 and 1235 m. The populations on

Anjouan Anjouan (; also known as Ndzuwani or Nzwani, and historically as Johanna or Hinzuan) is an autonomous high island in the Indian Ocean that forms part of the Union of the Comoros. Its chief town is Mutsamudu and, , its population is around 277,500. ...

Grand Comore Grande Comore () is an island in Comoros off the coast of Africa. It is the largest island in the Comoros nation. Most of its population is of the Comorian ethnic group. Its population is about 316,600. The island's capital is Moroni, Comoros, ...

, and Mayotte islands are morphologically distinct, but share enough characteristics with each other and with the original

type material In biology, a type is a particular specimen (or in some cases a group of specimens) of an organism to which the scientific name of that organism is formally attached. In other words, a type is an example that serves to anchor or centralizes the ...

to be identified as a single species, until further research proves otherwise.

Description

The specimens from Anjouan are all orange in color, like the types, whereas those from the other two islands are brown. The Grand Comore and Mayotte populations can be distinguished further by minor allometric differences in the head,

pronotum The prothorax is the foremost of the three segments in the thorax of an insect, and bears the first pair of legs. Its principal sclerites (exoskeletal plates) are the pronotum (dorsal), the prosternum (ventral), and the propleuron (lateral) on ea ...

and postpetiole. The majors from Grand Comore tend to have a slightly wider head and a wider postpetiole than those from Mayotte. ''P. jonas'' is probably closely related to '' P. vulcan'' and '' P. loki''. The minor workers of ''P. jonas'' can be separated from those of ''P. vulcan'' by slightly longer mandibles, scapes, and postpetiole, while the majors have a lower promesonotal process with a conspicuously concave transverse groove in profile view. Standing hairs are significantly less abundant and less flexuous in both worker castes than in those of ''P. vulcan''. The minor workers of ''P. loki'' (majors are unknown) can be easily distinguished from the two other species, as the scapes are on average longer and the sculpture on dorsal head and

mesosoma The mesosoma is the middle part of the body, or tagma, of arthropods whose body is composed of three parts, the other two being the prosoma and the metasoma. It bears the legs, and, in the case of winged insects, the wings. In hymenopterans of t ...

is largely reduced, whereas the heads and mesosomas of ''P. jonas'' and ''P. vulcan'' possess comparatively strong punctures.

References

External links

* {{Taxonbar, from=Q14086160

jonas Jonas may refer to: Geography * Jonas, Netherlands, Netherlands * Jonas, Pennsylvania, United States * Jonas Ridge, North Carolina, United States People with the name * Jonas (name), people with the given name or surname Jonas * Jonas, one of ...

Hymenoptera of Africa Insects described in 1907