Opamyrmini Boudinot & Griebenow, tribe nov., 1870

Griebenow, Zachary, 2024, Systematic revision of the ant subfamily Leptanillinae (Hymenoptera, Formicidae), ZooKeys 1189, pp. 83-184 : 83

Opamyrmini Boudinot & Griebenow, tribe nov.

Opamyrma Yamane, Bui & Eguchi, 2008 (Fig. 20 ).

Worker diagnosis.

Medial mandibular surface with single peg-like chaeta.

Mandible with one tooth and several preapical lobes.

Labrum with multiple ranks of peg-like chaetae ( Yamada et al. 2020: fig. 2F).

Maxillary palp 4-merous.

Labial palp 2-merous.

Clypeus extending posteriorly between antennal toruli.

Posteromedian epistomal sulcus not clearly discernible.

Occiput visible in full-face view.

Meso-metapleural suture absent.

Propodeal lobe weakly present.

Subpetiolar process absent.

Abdominal postsclerites II without tergosternal fusion.

Abdominal segment III not petiolate or narrower than posterad abdominal segments.

Abdominal postsclerites IV subequal in length to abdominal postsclerites V and VI.

Abdominal tergite VII hypertrophied, dome-like.

Gyne diagnosis.

As above, but alate, with compound eyes and three ocelli; occipital carina with short medioventral interruption. M + Cu complete, tubular; cu-a present; Rs + M, Cuf2 and -3, and 1m-cu present and spectral; 2r-rs + Rsf4 adjoined by Rsf3.

Male diagnosis.

As for the Leptanillinae , but Rs+M and 1m-cu present, and abdominal segment II without tergosternal fusion. Cupula non-annular. Lateropenite present, fully articulated to parossiculus, and malleate.

Larval diagnosis.

Habitus pogonomyrmecoid. Cranium subelliptical in full-face view. Mandibles typhlomyrmecoid, without teeth, lateral surfaces smooth. Setae short, suberect. Ventral prothoracic process and hemolymph tap on abdominal segment IV absent.

Figures

Figure 20. Geographical range of Opamyrma. Locality information derived from AntWeb and available literature, visualized with SimpleMappr.