Strumigenys aechme

Specimens have been collected from Dipterocarp forest.

Identification
Bolton (2000) - A member of the lyroessa complex in the Strumigenys lyroessa-group. Within the lyroessa-complex three species are characterised by their lack of a pronotal humeral hair and a lack of standing hairs on the dorsolateral margins of the mesonotum: Strumigenys aechme, Strumigenys lyroessa and Strumigenys tantilla. Of the three aechme is recognised by its lack of an apicoscrobal hair and its distinctive gastral pilosity.

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

Nomenclature

 *  aechme. Strumigenys aechme Bolton, 2000: 867 (w.) BORNEO.

Worker
Holotype. TL 2.4, HL 0.74, HW 0.57, CI 77, ML 0.21, MI 28, SL 0.29, SI 51, PW 0.33, AL 0.69. Characters of lyroessa-complex. Upper scrobe margin and leading edge of scape with small curved spoon-shaped hairs. Apicoscrobal hair absent; dorsolateral margin of occipital lobe without projecting hairs (minute ground-pilosity may occur). Cephalic dorsum without standing hairs except for a very short hair at apex of occipital lobe. Pronotal humeral hair absent and dorsal alitrunk entirely lacking standing hairs. Posterior half of first gastral tergite with a few suberect stiff hairs that are either elongate-spatulate or weakly remiform. Surface of first gastral tergite everywhere with ground-pilosity of conspicuous short but quite broad spatulate hairs that are reclinate to appressed. These hairs are distinctly shorter than the suberect main pilosity and are quite widely spaced, the distances between their bases being slightly greater than the lengths of the hairs themselves.

Paratypes. TL 2.3-2.5, HL 0.71-0.76, HW 0.53-0.58, CI 74-77, ML 0.20-0.22, MI 28-30, SL 0.28-0.29, SI 50-53, PW 0.31-0.35, AL 0.66-0.73 (4 measured).

Type Material
Holotype worker, Malaysia: Sarawak, 4th Diy., Gn. Mulu N. P., v.-viii.1978, camp 1, BM 1978-49 (P. M. Hammond & J. E. Marshall). Paratypes. 8 workers Malaysia: Sarawak, Gn. Matang, 20 km. W Kuching, 600 m., 25.v.1994, mix. Dipterocarp forest, #11a (Lobl & Burckhardt) (, BMNH, ).

References based on Global Ant Biodiversity Informatics

 * Mezger D., and M. Pfeiffer. 2011. Partitioning the impact of abiotic factors and spatial patterns on species richness and community structure of ground ant assemblages in four Bornean rainforests. Ecography 34: 39-48.
 * Mezger D., and M. Pfeiffer. 2011. Partitioning the impact of abiotic factors and spatial patterns on species richness and community structure of ground assemblages in four Bornean rainforest. Ecography 34: 39-48.
 * Mezger, D.; Pfeiffer, M. 2010. Ecological traits indicate niche differentiation in Bornean Dacetine species (Myrmicinae; Formicidae). Ecotropica 16: 51-57.
 * Pfeiffer M., D. Mezger, and J. Dyckmans. 2013. Trophic ecology of tropical leaf litter ants (Hymenoptera: Formicidae) - a stable isotope study in four types of Bornean rain forest. Myrmecological News 19: 31-41.
 * 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.0040760
 * 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.0040947
 * 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.0041087
 * 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