Leptogenys kanaoi

The type colony was collected from rotted wood in a mixed dipterocarp forest. It contained four queens, nine workers and two pupae.

Identification
Arimoto (2017) - In full-face view, head distinctly longer than wide (CI: 78–83). Mandible strongly curved throughout. Clypeus without lateral lobe; apex of median extension strongly projecting. Petiole in profile higher than long (LPI: 112–122), highest just anterior to posterodorsal angle; anterior face of node ventrally vertical and dorsally forming continuous curve with dorsum; dorsal face sloping anteriad. Gastral segment II smooth. smooth.

Distribution
Malaysia: Borneo (Sarawak and Sabah).

Distribution based on Regional Taxon Lists
Indo-Australian Region: Borneo, Malaysia.

Nomenclature

 *  kanaoi. Leptogenys kanaoi Arimoto, 2017: 96, figs. 3, 11, 12, 17B, 19B (w.q.) MALAYSIA.

Worker
(n = 5, holotype in parentheses). HL: 1.66–1.78 (1.77), HLL: 1.18–1.29 (1.24), HLA: 0.16–0.19 (0.19), HW: 1.34–1.43 (1.43), CML: 0.30–0.34 (0.34), CI: 78–83 (81), CLI: 17–19 (19), SL: 1.50–1.63 (1.56), SI: 109–116 (109), EL: 0.34–0.39 (0.36), OI: 27–30 (29), PrL: 1.04–1.09 (1.09), PrH: 0.69–0.74 (0.69), PrW: 1.03–1.07 (1.07), WL: 2.57–2.69 (2.69), PeL: 0.83–0.91 (0.91), PeH: 0.96– 1.06 (1.02), PeW: 0.70–0.75 (0.75), LPI: 112–122 (112), DPI: 78–87 (82).

In full face view, head distinctly longer than wide. Mandible strongly curved throughout, with subapical tooth near apical tooth. Eye prominent, measuring one-fourth to one-third of head lateral margin length. Antennal scape distinctly longer than width of head, surpassing posterior margin of head by one-fifth of its length; antennomere III ca. 2.2 times as long as wide. Clypeus without lateral lobe; median extension moderately long, with apex strongly projecting. In dorsal view, pronotum longer than wide. Metanotal groove distinctly impressed. In profile, propodeal dorsum broadly convex. Petiole in profile higher than long, highest near mid-length, with roughly fan-shaped node; anterior face of node ventrally vertical and dorsally forming continuous curve with dorsum; dorsal face sloping anteriad; posterior face almost straight.

Head weakly areolate-rugose, longitudinally striate anteriorly; vertex weakly and transversally striate. Mandible weakly and longitudinally striate. Prosternum weakly rugose. Gastral segment I with scalloped depressions that are irregular in size and close to each other; segments II smooth.

Body black, gaster slightly tinged with red; clypeus, mandible, antenna, legs and ventral half of petiole dark-red. Apical two or three segments of gaster red-brown. Scalloped depressions on gastral segment I bearing hairs.

Queen
(n = 5). HL: 1.59–1.74, HLL: 1.13–1.26, HLA: 0.16– 0.18, HW: 1.30–1.39, CML: 0.26–0.33, CI: 80–82, CLI: 15–19, SL: 1.39–1.52, SI: 107–110, EL: 0.33–0.40, OI: 29–32, PrL: 0.96–1.03, PrH: 0.65–0.71, PrW: 1.00–1.06, WL: 2.39–2.56, PeL: 0.82–0.86, PeH: 1.03–1.09, PeW: 0.72–0.78, LPI: 123–126, DPI: 88–94. Petiole in profile distinctly higher than long, in dorsal view longer than wide.

Type Material
Holotype. Worker (AK92), from rotted wood, mixed dipterocarp forest, Lambir Hills National Park, Miri, Sarawak, East Malaysia (Borneo), Malaysia, 4.20°N, 114.04°E, 90m, 4 X 2012, Taisuke Kanao leg. FDS. Paratypes (12 workers, 8 queens). 8 workers, 4 queens, same colony as the holotype [4 workers, 2 queens: FDS; 4 workers, 2 queens: ; 1 worker, Tower Region, same park, 16 VIII 1995, Seiki Yamane leg. ; 3 workers, 4 queens (Eg98-BOR-868), Seipilok Forest, Sabah, East Malaysia (Borneo), Malaysia, 4 VII 1998, Katsuyuki Eguchi leg. [SKYC].

Etymology
Dedicated to Dr. Taisuke Kanao, collector of the material examined.