Strumigenys mnemosyne (Bolton, 2000)

Pyramica mnemosyne Bolton, 2000: 446, figs. 266, 291 (w.) BORNEO (East Malaysia: Sarawak).

Combination in Strumigenys: Baroni Urbani & De Andrade, 2007: 124 Fig 2D–F.

Diagnostic characters

Strumigenys mnemosyne is morphologically close to S. marmorata, both lack standing setae on the scape, sculpture on the head and mesosomal dorsum. Each species can be differentiated from one another by the presence of erect simple setae on the cephalic, mesosomal and petiole dorsum in S. mnemosyne and the conspicuously wider head in S. marmorata (HW 0.34–0.39). Additional differing characters include the shape of the scape, which is heavily constricted proximally in S. mnemosyne, the significantly longer setae on the posterior of the first gastral tergite and subsequent tergites.

Material examined

Physical specimens examined (n =3):

Holotype worker: Malaysia; Sarawak, 4th Division, Gn. Mulu Nat. Pk, RGS Expd., Long Pala, 26.ix.1977, lowland rainforest leaf litter (B. Bolton) CASENT0900146 [NHMUK] • 1 worker: Malaysia; Sabah, Deramakot Forest Reserve, January – April 1998; Brühl; NHMUK010639089 [NHMUK] • 1 worker: Malaysia; Sabah, Poring Hot Spring, 10/5/1987; Burokhardt & Löbl; NHMUK010639088 [NHMUK].

Distribution

Known only from East Malaysia (Sabah & Sarawak) (Fig 1; Table 1).

Comments

As far as the authors are aware, S. mnemosyne is only known from Sabah and Sarawak in Borneo from four localities, Long Pala, Maliau Basin (CASENT0394454 & CASENT0700789, AntWeb.org), Deramakot Forest Reserve and Poring Hot Spring. Like other members of the group, little is known of the biology of S. mnemosyne but all specimens with collection information are known from leaf litter extractions.