Leptanillini Emery, 1910, 2008

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

Leptanillini Emery, 1910

Leptanilla Emery, 1870.

Protanilla Taylor in Bolton, 1990b.

Worker diagnosis.

Medial mandibular surface with or without peg-like chaetae.

Mandible with 0-4 teeth along medial margin.

Labrum with (Fig. 21A, B ) or without multiple ranks of peg- or pencil-like chaetae.

Maxillary palp 4-, 2-, or 1-merous.

Labial palp 2- or 1-merous.

Clypeus extending posteriorly between antennal toruli (Fig. 22A ) or not (Fig. 22B ).

Posteromedian epistomal sulcus clearly discernible (Fig. 22A ) or not (Fig. 22B ).

Occiput not visible in full-face view.

Meso-metapleural suture present or absent.

Propodeal lobes absent.

Subpetiolar process present or absent.

Abdominal postsclerites II-III with tergosternal fusion.

Abdominal segment III petiolate, narrower than posterad abdominal segments.

Abdominal postsclerites IV subequal in length to, or greater in length than, abdominal postsclerites V-VI.

Abdominal tergite VII enlarged, not dome-like.

Gyne diagnosis.

See respective gyne-based diagnoses for Protanilla and Leptanilla below.

Male diagnosis.

As for the Leptanillinae , but Rs+M and 1m-cu absent. Abdominal segment II with complete tergosternal fusion. Lateropenite present or absent; if present, then not articulated to parossiculus and never malleate.

Larval diagnosis.

See respective larval diagnoses for Protanilla and Leptanilla below.

Figures

Figure 21. Labral chaetae in Protanilla, diagrammatic anterior view A Protanilla id 01, gyne B Protanilla wallacei (CASENT 0842699), worker.

Figure 22. Condition of the worker frontoclypeal margin in Protanilla (A) and Leptanilla (B) A Protanilla beijingensis (CASENT 0842639) B Leptanilla laventa (CASENT 0842746). Scale bars: 0.5 mm (A); 0.1 mm (B).