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Pheidole ragnax
''Pheidole ragnax'' is a species of ants in the subfamily Myrmicinae.
==Description==
''Pheidole ragnax'' seems closely related to ''P. bessonii'' from Madagascar, as the two share important key characters such as the occipital collar and the elongated shapes of the head, mesonotum, scapes, legs, and postpetiole in minor workers, and the acute lateral postpetiolar process and face with obliquely longitudinal rugae in major workers. All six specimens of this species were collected from a single rotten log in coastal scrub rainforest on Mayotte, which is less than 350 km north and east of the coast of Madagascar. Such proximity suggests that ''P. ragnax'' could represent a mere geographic variation of ''P. bessonii''. Nevertheless, the ''P. ragnax'' specimens can be clearly separated from the type material of ''P. bessonii'' by the more elongated head shape, scapes, and legs in the minor workers. The holotype major worker of ''P. ragnax'' differs from that of ''P. bessonii'' in the oblique versus convex head sides, as well as longer scapes, mandibles, legs, and larger eyes. However, until more material of ''P. ragnax'' is collected and the whole group is revised, there will not be a definite answer to whether ''P. ragnax'' is a synonym of ''P. bessonii'' or a distinct biological species.〔
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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