Strumigenys amasara

Specimens were collected from a litter sample in secondary wet forest.

Identification
Bolton (2000) - A member of the koningsbergeri complex in the Strumigenys koningsbergeri-group. Like Strumigenys seynoka this species has hypertrophied femoral gland bullae but they are smaller here than in seynoka and strangely are absent from the forelegs; see notes under Strumigenys koningsbergeri.

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

Nomenclature

 *  amasara. Strumigenys amasara Bolton, 2000: 837 (w.) BORNEO.

Worker
Holotype. TL 2.9, HL 0.86, HW 0.74, CI 86, ML 0.36, MI 42, SL 0.44, SI 59, PW 0.37, AL 0.81. With characters of koningsbergeri-complex. Preocular concavity extends onto ventral surface of head as a short but broad impression. Upper scrobe margins shallowly convex and evenly divergent, not flared outward at nearly a right-angle at level of eye; only extreme outer arc of eye is visible in full-face view. Upper scrobe margin with a weakly jagged appearance as the small curved hairs that fringe the margin each arises from a small tubercle. Depression across posterior vertex of head broad but very shallow. Pronotum without a pair of short standing hairs close to anterodorsal margin. Mesonotum with a single pair of short erect hairs. Katepisternum mostly smooth, metapleuron finely reticulate-punctate or with a smooth patch. Bullae of femoral glands large and conspicuous on middle and hind legs, absent from forelegs. With hind leg in dorsal view maximum length of bulla about 0.33 X length of femur and its width about 0.50 X maximum width of femur. Bullae of glands present on all tibiae, large and very conspicuous on middle and hindlegs. Lamella on propodeal declivity broad, its posterior (free) margin shallowly convex. Standing hairs on first gastral tergite stout, simple or weakly expanded toward the apex.

Paratypes. TL 2.8-2.9, HL 0.83-0.86, HW 0.70-0.74, CI 83-87, ML 0.35-0.37, MI 40-43, SL 0.42-0.46, SI 58-63, PW 0.35-0.37, AL 0.75-0.81 (9 measured).

Type Material
Holotype worker, Malaysia: Sarawak, 4th Division, Gn. Mulu N. P., v-viii.1978, B. M. 1978-49 (P. M. Hammond & J. E. Marshall). Paratypes. 12 workers with same data as holotype (BMNH,, ).

References based on Global Ant Biodiversity Informatics

 * Bolton, B. 2000. The Ant Tribe Dacetini. Memoirs of the American Entomological Institute 65
 * Pfeiffer M., and D. Mezger. 2012. Biodiversity Assessment in Incomplete Inventories: Leaf Litter Ant Communities in Several Types of Bornean Rain Forest. PLoS ONE 7(7): e40729. doi:10.1371/journal.pone.0040917
 * Pfeiffer M., and D. Mezger. 2012. Biodiversity Assessment in Incomplete Inventories: Leaf Litter Ant Communities in Several Types of Bornean Rain Forest. PLoS ONE 7(7): e40729. doi:10.1371/journal.pone.0040980
 * Pfeiffer M.; Mezger, D.; Hosoishi, S.; Bakhtiar, E. Y.; Kohout, R. J. 2011. The Formicidae of Borneo (Insecta: Hymenoptera): a preliminary species list. Asian Myrmecology 4:9-58
 * Woodcock P., D. P. Edwards, R. J. Newton, C. Vun Khen, S. H. Bottrell, and K. C. Hamer. 2013. Impacts of Intensive Logging on the Trophic Organisation of Ant Communities in a Biodiversity Hotspot. PLoS ONE 8(4): e60756. doi:10.1371/journal.pone.0060756
 * Woodcock P., D. P. Edwards, T. M. Fayle, R. J. Newton, C. Vun Khen, S. H. Bottrell, and K. C. Hamer. 2011. The conservation value of South East Asia's highly degraded forests: evidence from leaf-litter ants. Phil. Trans. R. Soc. B. 366: 3256-3264.
 * Woodcock P., D.P. Edwards, T.M. Fayle, R.J. Newton, C. Vun Khen, S.H. Bottrell, and K.C. Hamer. 2011. The conservation value of South East Asia's highly degraded forests: evidence from leaf-litter ants. Phil. Trans. R. Soc. B 366: 3256-3264.