Strumigenys mirabilis

Mann found the type material under a stone.

Distribution based on Regional Taxon Lists
Neotropical Region: Bolivia, Brazil.

Nomenclature

 *  mirabilis. Strumigenys (Tingimyrmex) mirabilis Mann, 1926: 105, fig. 1 (w.) BOLIVIA. Combination in Tingimyrmex: Brown, 1948e: 111; in Pyramica: Bolton, 1999: 1673; in Strumigenys: Baroni Urbani & De Andrade, 2007: 124. See also: Bolton, 2000: 206.

Worker
Bolton (2000) - TL 2.6-2.9, HL 0.68-0.70, HW 0.50-0.56, CI 75-80, ML 0.14-0.15, MI 20-21, SL 0.42-0.44, SI 76-84, PW 0.39-0.40, AL 0.72-0.76 (3 measured).

[Dimensions just given include lamellae of head and body. For the same 3 workers, excluding the lamellae, measurements differ thus: HL 0.64-0.66, HW 0.38-0.40, CI 59-62, MI 22-23, SI 105-115, PW 0.30-0.32.] Entire ant smooth and shining. Node of petiole in dorsal view small, much broader than long and with a posterior spongiform collar whose width from front to back is about equal to the dorsal length of the node. Postpetiole massive, its disc many times the area of the petiole node; petiole node maximum width ca 0.18, postpetiole disc maximum width ca 0.38. Upper scrobe margin throughout its length with a continuous subspongiform lamella that projects laterally and is about 0.12-0.16 wide, its outer margin irregular. Lower scrobe margin behind eye similarly lamellate, the upper and lower lamellae continuous around the posterior angle of the scrobe. Occipital margin in full-face view with a transverse lamella that is ca 0.04 wide. This lamella continues down the side of the occipital surface to the posterior ventrolateral angle of the head capsule; occipital lamella is separate from lamella that circumscribes the scrobe. Pronotal humerus with a broad flat laterally projecting tubercle from which the flagellate humeral hair arises. Anterior margins of these tubercles with a lamella that extends across the anterior pronotum, broadest at the tubercles and narrowing medially. Mesonotum with a low lamina on each side from which the long flagellate hair arises. Propodeum with a near-vertical dorsolateral lamella on each side that is about 0.10 tall at maximum. This lamella extends the length of the segment and continues posteriorly along the top of the vestigial propodeal spine. Lamella of propodeal declivity very broad, width from spiracle to apex ca 0.20, continuous with the dorsal propodeal lamella around the apex of the spine. Petiole dorsally with a tall cuticular crest that extends along the peduncle and up the anterior face of the node, terminating just behind the anterodorsal angle of the node. Legs in this species are relatively long, hind femur length ca 0.64, and the middle and hind femora and tibiae are noticably bilaterally compressed.

Type Material
Bolton (2000) - Syntype workers, BOLIVIA: Huachi, Beni (W.M. Mann) [examined].