Leptogenys malayana

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Leptogenys malayana
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Ponerinae
Tribe: Ponerini
Genus: Leptogenys
Species group: modiglianii
Species: L. malayana
Binomial name
Leptogenys malayana
Arimoto, 2017

Arimoto, K 2017-22a.jpg

Arimoto, K 2017-22b.jpg

Nothing is known about the biology of Leptogenys malayana.

Identification

Arimoto (2017) - A member of the Leptogenys modiglianii species group. In full-face view, head almost as long as wide (CI: 98–101). Mandible curved near base, becoming straight apically. Antennal scape distinctly longer than width of head (SI: 115–121), surpassing posterior margin of head by two-fifths of its length. Clypeus with lateral lobe, with blunt angle between lateral lobe and median extension; apex of median extension truncate. Petiole in profile distinctly higher than long (LPI: 112–116), highest just anterior to posterodorsal angle; anterior face of node ventrally vertical and dorsally forming continuous curve with dorsum; dorsal face distinctly inclined anteriad.

Keys including this Species

Distribution

Malaysia: Peninsular Malaysia (Trengganu).

Distribution based on Regional Taxon Lists

Indo-Australian Region: Malaysia (type locality).


Distribution based on AntMaps

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Distribution based on AntWeb specimens

Check data from AntWeb

Biology

Castes

Nomenclature

The following information is derived from Barry Bolton's New General Catalogue, a catalogue of the world's ants.

  • malayana. Leptogenys malayana Arimoto, 2017: 99, figs. 3, 13, 18A (w.) MALAYSIA.

Unless otherwise noted the text for the remainder of this section is reported from the publication that includes the original description.

Description

Worker

(n = 3, holotype in parentheses). HL: 1.57–1.63 (1.63), HLL: 1.16–1.21 (1.18), HLA: 0.17–0.19 (0.17), HW: 1.59–1.61 (1.60), CML: 0.23–0.24 (0.23), CI: 98–101 (98), CLI: 14–15 (14), SL: 1.83–1.95 (1.91), SI: 115–121 (120), EL: 0.36–0.38 (0.37), OI: 31 (31), PrL: 1.01–1.09 (1.09), PrH: 0.74–0.89 (0.89), PrW: 1.12–1.14 (1.14), WL: 2.57–2.78 (2.78), PeL: 0.88–0.97 (0.97), PeH: 1.02– 1.10 (1.09), PeW: 0.72–0.76 (0.76), LPI: 112–116 (112), DPI: 77–82 (78).

In full face view, head almost as long as wide. Mandible curved near base, becoming straight apically; subapical tooth distinct in holotype or absent in paratypes. Eye prominent, measuring one-third of head lateral margin length. Antennal scape distinctly longer than width of head, surpassing posterior margin of head by two-fifths of its length; antennomere III ca. 2.7 times as long as wide. Clypeus with lateral lobe, with blunt angle between lateral lobe and median extension; median extension short, with truncate apex. In dorsal view, pronotum shorter than wide. Metanotal groove slightly impressed. In profile, propodeal dorsum weakly convex to almost straight. Petiole in profile distinctly higher than long, highest just anterior to posterodorsal angle, with fan-shaped node; anterior face of node ventrally vertical and dorsally forming continuous curve with dorsum; dorsal face distinctly inclined anteriad; posterior face slightly concave dorsally and slightly convex ventrally.

Head strongly areolate-rugose, longitudinally striate near clypeus; vertex weakly and transversally striate. Mandible distinctly striate longitudinally. Gastral segment I with scalloped depression that are irregular in size but generally large; large depressions close to each other; distance between small depressions greater than diameter of depressions; 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.

Type Material

Holotype. Worker, Trengganu, Malaysia, 1974, T. Clay leg. The Natural History Museum. Paratypes. 2 workers, same data as the holotype [BMNH]. Detailed collecting locality of the types is unknown. For convenience, the location of this species is marked at the center of Trengganu Province, Malaysia, on the distribution map.

Etymology

The species epithet, malayana, refers to the fact that this species was found on Peninsular Malaysia.

References