Strumigenys semirex

Known from the type material, a collection from a rainforest litter-sample.

Identification
Bolton (2000) – A member of the emdeni complex in the Strumigenys horvathi-group. See Strumigenys emdeni.

Distribution based on Regional Taxon Lists
Australasian Region: Australia.

Nomenclature

 *  semirex. Strumigenys semirex Bolton, 2000: 977 (w.) AUSTRALIA.

Worker
Holotype. TL 2.7, HL 0.75, HW 0.60, CI 80, ML 0.26, MI 35, SL 0.34, SI 57, PW 0.34, AL 0.77. Characters of emdeni-complex; closely related to emdeni and answering that description except for the following. Inner margin of mandible with a very slender cuticular crest; carina-like. Outer curvature of eyes just visible in full-face view, the upper scrobe margins straight rather than shallowly convex. Cephalic dorsum densely clothed with spoon-shaped to scale-like ground-pilosity but this pilosity not reproduced on promesonotal dorsum. Promesonotal ground-pilosity consists of scattered small spatulate hairs, the overall appearance of which is much less dense and much weaker than on the cephalic dorsum. Pronotal humeral hair absent; mesonotum with a single pair of short standing hairs. First gastral tergite with numerous erect stiff hairs that are slightly thickened or flattened apically, or weakly remiform. Dorsum of head and alitrunk reticulate-punctate but side of alitrunk with katepisternum, most of metapleuron and part of side of propodeum smooth. Disc of postpetiole smooth and shining.

Type Material
Holotype worker, Australia: North East Queensland, Bellenden-Ker, Centre Peak Summit, 23.x.1980, QM Berlesate No. 266, 17.16S, 145.52E, 1560 m, rainforest, sieved litter (G. B. Monteith).