Strumigenys mixta

While some of the type material was taken from orchid plants in quarantine, suggesting this species is arboreal, collections since have been made from litter or ground sampling. These have been from a range of forest habitats.

Identification
Bolton (2000) - A member of the Strumigenys louisianae-group. Immediately identified by its possession of fine flagellate hairs at all the positions mentioned. No other species of the group has this arrangement. One (Strumigenys dubitata) has no flagellate hairs at all and Strumigenys louisianae only has them at the humeral angles of the pronotum.

Distribution based on Regional Taxon Lists
Neotropical Region: Guatemala, Honduras.

Nomenclature

 *  mixta. Strumigenys mixta Brown, 1953e: 4 (w.) GUATEMALA. See also: Bolton, 2000: 526.

Worker
TL 2.1-2.5, HL 0.51-0.59, HW 0.43-0.46, CI 80-84, ML 0.28-0.32, MI 54-60, PW 0.25-0.30, AL 0.51-0.60 (3 measured). Mandible with a minute inconspicuous denticle proximal to the preapical tooth, located on the upper inner margin just distal of its midlength. With head in profile postbuccal groove shallow and obtuse. Apicoscrobal hair finely flagellate. Cephalic dorsum with 2 pairs of short standing hairs, one close to occipital margin, the other close to highest point of vertex. Pronotal humeral hair elongate, fine and flagellate; mesonotal standing hairs flagellate. Ventral surface of petiole with a minute spongiform lobe at the extreme posteroventral angle below the node; when postpetiole flexed downward this lobe is concealed between the ventral lobes of the postpetiole.

Type Material
Holotype and paratype workers, GUATEMALA: Escuintla, v.1924 (W. M. Mann); paratype workers, GUATEMALA: San Jose, 12.iv.1946, SF 20139 Supl., 46-5348 (intercepted by U.S. Plant Quarantine at San Francisco, California), in shipment of orchids (Cattleya bowringeana) (no collector's name) [examined].