Cataulacus muticus

Identification
A medium-sized species, definitely of the granulatus-group and seemingly closely related to Cataulacus granulatus itself, and yet distinguished by the presence of blunt propodeal tubercles instead of spines, the node of the petiole which is distinctly longer than broad, and the relatively smooth sides of the propodeum. The head, alitrunk and pedicel are relatively coarsely sculptured.

Distribution
This taxon was described from Myanmar. It is also found in India and Malaysia.

Biology
• http://www.antbase.net/english/ants-of-southeast-asia/ecology/peeing-ants.html (flood controle in the nest, with picture)

Nomenclature

 *  muticus. Cataulacus muticus Emery, 1889b: 507, pl. 10, fig. 17 (w.) MYANMAR.

Worker
Bolton (1974) - TL 5.5 - ca 6.0. Head as in granulatus but proportionately larger and with the denticles of the sides of the head behind the eyes larger and more produced. Sides of pronotum and mesonotum strongly denticulate, but the sides of the propodeum with only one or two denticles and converging posteriorly. Propodeum with a pair of obtuse and blunt tubercles (referred to in Bingham as 'slightly produced rounded projecting laminae'). Petiole distinctly longer than broad, rather slender; postpetiole longitudinally oval, truncated in front and behind. Gaster as in granulatus. Head, alitrunk and pedicel very coarsely reticulate-rugose, the pedicel remarkably rugose. Gaster finely punctate and with fine longitudinal rugulae. Pilosity 'rather long', whitish in colour.

Type Material
Bolton (1974) - Holotype worker, BURMA: Tenasserim, Thagata, Mt. Mooleyit (L. Pea) (probably in MCSN, Genoa).

Additional References

 * [[Media:Dorow 2000.pdf|Maschwitz, U.; Dorow, W. H. O.; Schellerich-Kaaden, A. L.; Buschinger, A.; Azarae, H. I. 2000. Cataulacus muticus Emery 1889 a new case of a southeast Asian arboreal ant, non-mutualistically specialized on giant bamboo. Senckenb. Biol. 80: 165-173 PDF]]
 * Maschwitz U & Moog J (2000) "Communal peeing: a new mode of flood control in ants." Naturwissenschaften 87 (12): 563-565.