Lasiomyrma gedensis

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Lasiomyrma gedensis
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Myrmicinae
Tribe: Crematogastrini
Genus: Lasiomyrma
Species: L. gedensis
Binomial name
Lasiomyrma gedensis
Terayama & Yamane, 2000

Lasiomyrma gedensis casent0102364 profile 1.jpg

Lasiomyrma gedensis casent0102364 dorsal 1.jpg

Specimen Label

The type series includes specimens from two colonies, which were taken from rotten wood on the forest floor.

Identification

Terayama & Yamane (2000) - This species is distinguished from the other congeners by the convex propodeal dorsum in profile, the obtuse angle of the anterior slope of petiolar node, and the straight occipital margin of head in full face view.

Keys including this Species

Distribution

Distribution based on Regional Taxon Lists

Indo-Australian Region: Indonesia (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.

  • gedensis. Lasiomyrma gedensis Terayama & Yamane, 2000: 524, figs. 1-8 (w.q.) INDONESIA (Java).

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

Description

Worker

Xu 2012 Gaoligongidris Fig 8-12.jpg
HL 0.61 mm (holotype), 0.60-0.65 mm (paratypes); HW 0.54 mm, 0.53-0.54 mm; SL 0.35 mm, 0.35-0.36 mm; CI 88, 86-89; SI 65, 65-67; WL 0.83 mm, 0.80-0.85 mm; PW 0.41 mm, 0.41-0.44 mm; PL 0.28 mm, 0.28-0.29 mm; PH 0.24 mm, 0.24-0.25 mm; DPW 0.18 mm, 0.17-0.18 mm; PPL 0.16 mm, 0.15-0.16 mm; PPH 0.20 mm, 0.20-0.22 mm; PPW 0.20 mm, 0.20-0.21 mm; TL 2.4 mm, 2.3-2.4 mm. (Holotype and 5 paratype workers were measured and separately mentioned.)

Head 1.12-1.15 times as long as wide, with convex sides and straight occipital margin in full face view; surface densely punctate. Eye 0.13-0.14 mm in maximum diameter.

Alitrunk densely punctate, with slightly convex promesonotal dorsum and convex propodeal dorsum; anterior margin of promesonotum convex in dorsal view; metanotal groove relatively deeply incised dorsally. Mesopleuron rather short, its maximum length slightly longer than its length of ventral margin. Propodeal spine longer than wide at base, with an acute tip; propodeal declivity steep; propodeal lobe weakly produced posteriorly.

Petiole longer than high; node thick; anterior face much more steeply sloping than posterior face in profile; anterior margin of node forming an obtuse angle. Postpetiole higher than long in profile, highest at posterior 1/3.

Gaster oval in dorsal view, largely smooth, scatterd with small shallow punctures and 0.54 mm in maximum dorsal width.

Body blackish brown; mandible and antenna yellowish brown; legs brown.

Queen

HL 0.68 mm; HW 0.60 mm; SL 0.38 mm; CI 89 mm; SI 63; WL 0.83 mm; PW 0.53 mm; PL 0.35 mm; PH 0.29 mm; DPW 0.25 mm; PPL 0.18 mm; PPH 0.18 mm; PPW 0.24 mm; TL 2.8 mm.

Head slightly longer than wide, with very weakly convex sides and almost straight occipital margin in full face view; surface densely punctate. Compound eye 0.20 mm in maximum diameter. Ocelli forming an obtuse triangle.

Alitrunk high, densely punctate, with slightly convex dorsum. Pronotum wide, with convex anterior margin and obtusely angulate humeri in dorsal view; mesoscutum 0.80 times as long as wide, with convex anterior margin in dorsal view; posterior margin of metanotum broadly rounded in dorsal view; propodeal spine short and obtusely angulate.

General shape of petiole and postpetiole largely as in the worker.

Gaster oval in dorsal view; anterior 1/3 of 1st tergite microreticulate; and the rest shallowly and weakly punctate.

Type Material

Holotype. Worker, Mt. Gede, West Java, Indonesia, Jan. 1991, F. Ito leg.

Paratypes. 9 workers, same data as in holotype; 1 queen, 4 workers, Gede-Pangrango National Park, Java, Indonesia, 6. VI. 1997, K. Ohkawara leg.

Holotype and some paratypes are deposited in the Zoological Museum (Bogar) (Indonesian Institute of Science, LIP!), and the other paratypes in the National Institute of Agro-Environmental Sciences (Tsukuba), Museum of Nature and Human Activities (Hyogo ), Faculty of Science, Kagoshima University (Kagoshima), and the Natural History Museum (London).

Etymology

The specific epithet refers to the type locality.

References