Diaphoromyrma, Fernández, F., Delabie, J. H. C. & do Nascimento, I. C., 2009

Fernández, F., Delabie, J. H. C. & do Nascimento, I. C., 2009, Diaphoromyrma, a new myrmicine ant genus (Hymenoptera: Formicidae) from North Eastern Brazil., Zootaxa 2204, pp. 52-62 : 56-59

publication ID

22817

DOI

https://doi.org/10.5281/zenodo.6216578

persistent identifier

https://treatment.plazi.org/id/53593A4E-C6E3-12BE-A4EE-085081FE72B3

treatment provided by

Christiana

scientific name

Diaphoromyrma
status

gen. n.

Diaphoromyrma   HNS gen. n.

Type species: Diaphoromyrma sofiae   HNS , sp. n., by present designation.

Diagnosis (worker). Monomorphic ants belonging to the subfamily Myrmicinae   HNS . Palp formula 3,2 (in situ). Anterior clypeal border broadly convex. Clypeus broad, evenly rounded, devoid of carinae and broadly inserted between the widely separated frontal lobes. Row of hairs on the anterior clypeal margin, including median seta. Tentorial pits inserted midway in the clypeal margin. Antennal scrobe absent. Antenna with 2-segmented club. In lateral view, promesonotum strongly convex. In dorsal view the promesonotum triangular, with sides well defined. Propodeal spiracles conspicuous, situated on the dorsal edge of declivous face of propodeum, breaking the propodeal outline in lateral view. Propodeum unarmed. Propodeal lobes small and rounded, not linked by a dorsal carina.

Petiolar node high in relation to the postpetiolar node, narrow (in dorsal view) in contrast with the broader, postpetiole node. Postpetiole attached low on the gaster, so the top of the first gastral tergum at about the same level as the postpetiole. Abdominal sternite 4 (first gastral) with a pair of rounded recurved anterolateral extensions which curve up on to the dorsal surface of the segment, and are visible in dorsal view on either side of the postpetiole.

Comments. The combination of the following traits differentiate this taxon from any other in the subfamily Myrmicinae   HNS : antenna 9-segmented with a 2-segmented club, clypeus broad, clypeus with central apical hair, promesonotum trapezoidal, propodeal spiracles situated on lateral propodeal edges. The low position of the postpetiole and the sternal configuration of the first gastric segment are unique in Myrmicinae   HNS and apomorphic for the genus.

Etymology. Diaphoromyrma   HNS is a neologism forged from the Greek words [[...]] (diaphoros), meaning different or remarkable, and [[...]] (myrmekos), ant. This name alludes to the several traits that differentiate this genus from any other Myrmicinae   HNS , especially those relative to the gaster.

CASC

USA, California, San Francisco, California Academy of Sciences

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Hymenoptera

Family

Formicidae

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