Strumigenys formosa

Known from two type queens. Nothing is known about the biology of .

Identification
A member of the Strumigenys murphyi-group.

Teriyamu et al. (1995) - This species resembles Strumigenys hirashimai, but is easily separable from the latter in female by the absence of large flattened hairs on vertex and mesonotal dorsum (in hirashimai large flattened hairs abundant on dorsa of head and mesonotum), the absence of spoon-shaped hairs on dorsum of metanotum (in hirashimai with small spoon-shaped hairs), and acute upper posterior corner of propodeal lamellae (in hirashimai upper posterior corner of propodeal lamellae rounded).

Distribution based on Regional Taxon Lists
Oriental Region: Taiwan.

Nomenclature

 *  formosa. Epitritus formosus Terayama, Lin & Wu, 1995: 85, figs. 1-4 (q.) TAIWAN. Combination in Pyramica: Bolton, 1999: 1672; in Strumigenys: Baroni Urbani & De Andrade, 2007: 120. See also: Bolton, 2000: 452.

Queen
Holotype. HL 0.35 mm; HW 0.40 mm; SL 0.23 mm; ML 0.13 mm; CI 114; SI 58; MI 37; WL 0.48mm; AW 0.28mm; TL 1.5mm.

Head wider than long, widest at about the midlength, with shallowly convex posterior border in frontal view; frons microreticulate, with 15 appressed large orbicular hairs; vertex microreticulate, hairless. Mandibles slender in frontal view; apical half of inner margin with 4 minute teeth, of which basalmost largest; apicalmost with 2 small teeth, one at dorsal and the other at ventral. Clypeus wider than long, with transverse anterior border. Antennae with 6 segments; scape with a large anteriorly projecting subbasal lobe at the bent, anterior margin with a row of spoon-shaped hairs; 2nd segment longer than wide; 3rd and 4th segments each wider than long; 5th slightly longer than wide, and apical 3.0 x as long as wide. Compound eyes moderately prominent, 0.06 mm in diameter. Ocelli small, forming an obtuse triangle.

Dorsal outline of alitrunk straight in profile; pronotum weakly microreticulate; meso-metanotum microreticulate and scattered with short erect hairs. Propodeal lamellae moderately developed; upper posterior corner acute. Petiolar disc rectangular in dorsal view, 1.67 x as broad as long, with subdecumbent short hairs; postpetiolar disc 2.28 x as broad as long, with a pair of erect hairs and some subdecumbent hairs.

First gastral tergite with 3 transverse rows of long erect hairs, and many decumbent, curved, and short hairs; 2nd and 3rd tergites each with a transverse row of long erect hairs, and many decumbent, curved, and short hairs.

Ground color yellow; ocellar triangular area blackish brown.

Type Material
Holotype: Female, Tapeng-Meizilin (alt. 510 m). Nantou Hsien, 30.VII.1988. Paratype: One female, same data as holotype. The types are preserved in the collection of the National Institute of Agro-Environmental Sciences, Tsukuba, Japan.

Bolton (2001) - Holotype queen and paratype queen, TAIWAN: Tapeng-Meizilin, Nantou Hsien, 510 m, 30.vii.1988 (no collector's name quoted) (, UTK) [examined].