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Genus: Lasiomyrma   Terayama & Yamane, 2000 


Current Valid Name:

Taxonomic History (provided by Barry Bolton, 2023)

Extant: 4 valid species

Lasiomyrma Terayama & Yamane, 2000: 523. Type-species: Lasiomyrma gedensis, by original designation. AntCat AntWiki HOL

Taxonomic history

Lasiomyrma as genus: all authors.
Genus Lasiomyrma references
Terayama & Yamane, 2000: 527 (all species key); Eguchi et al., 2011 PDF: 16 (diagnosis, Vietnam synopsis).
// Distribution


  Geographic regions (According to curated Geolocale/Taxon lists):
    Asia: Borneo, Indonesia, Malaysia, Philippines, Thailand, Vietnam
  Biogeographic regions (According to curated Bioregion/Taxon lists):
    Australasia, Indomalaya
  Native biogeographic regions (according to species list records):
    Australasia, Indomalaya

Taxonomic Treatment (provided by Plazi)

Treatment Citation: Eguchi, K., Viet, B. T. & Yamane, S., 2011, Generic synopsis of the Formicidae of Vietnam (Insecta: Hymenoptera), Part I - Myrmicinae and Pseudomyrmicinae., Zootaxa 2878, pp. 1-61

Lasiomyrma Terayama & YamaneHNS, 2000

Taxonomy. The genus LasiomyrmaHNS is assigned to the tribe StenamminiHNS by Terayama & Yamane (2000). The worker of the single known Vietnamese species has the following features.

Wo r k e r probably monomorphic; head in lateral view subrectangular; frontal carina and antennal scrobe absent; median portion of clypeus forming steep anterior face, with weak submedian carinae; anteromedian portion of clypeus forming a transverse strip with anterior margin weakly pointed in middle, lacking an isolated median seta; posteromedian portion of clypeus relatively narrowly inserted between frontal lobes; mandible elongate-trianglar, with 8 teeth that decrease in size from apex to base; antenna 12-segmented, with inconspicuous 3-segmented club; eye well developed; promesonotum in lateral view slightly convex, only a little higher than anterior border of propodeum, in dorsal view with obtusely angulate humeri; promesonotal suture absent dorsally; metanotal groove distinct; propodeal spine distinct; propodeal lobe present as a small angulate lobe; petiole pedunculate, with high and thin node; postpetiole higher than long, in lateral view roundly convex dorsally; gastral shoulder absent.

All of the described species of LasiomyrmaHNS have 11-segmented antennae (Terayama & Yamane 2000, Jaitrong 2010). However, a single worker of LasiomyrmaHNS collected from northern Vietnam (L. sp. eg-1) has 12-segmented antennae, thus the worker diagnosis of the genus given in Terayama & Yamane (2000) should be widened as "antenna 11- or 12-segmented". The worker of LasiomyrmaHNS is morphologically very similar to those of Lordomyrma bhutanensisHNS (Baroni Urbani) and L. sinensisHNS (Ma, Xu, Makio & DuBois) which were recently transferred to LordomyrmaHNS from StenammaHNS by Branstetter (2009). These LordomyrmaHNS species completely lack antennal scrobes and have the apex of anterior clypeal margin with a small projecting tooth. We provisionally accept LasiomyrmaHNS as a valid genus but suggest that a comprehensive re-examination of LordomyrmaHNS and LasiomyrmaHNS is needed.

Vietnamese species. A single specimen of LasiomyrmaHNS has been found from Vietnam: sp. eg-1 (Ba Vi).

Bionomics. The single specimen of LasiomyrmaHNS sp. eg-1 was collected near the top of Mt. Ba Vi, ca. 1,100 m alt. (Eguchi et al. 2005).

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