Strumigenys bibiolona

Distribution based on Regional Taxon Lists
Malagasy Region: Madagascar.

Nomenclature

 *  bibiolona. Strumigenys bibiolona Fisher, in Bolton, 2000: 650 (w.q.) MADAGASCAR.

Worker
Holotype. TL 3.5, HL 0.85, HW 0.52, CI 61, ML 0.51, MI 60, SL 0.65, SI 126, PW 0.32, AL 0.91. Characters of chilo-complex. Mandibles almost straight and at full closure parallel. Apical fork of mandible subtended by a third, shorter spiniform tooth; the fork effectively 3-dentate; without intercalary teeth or denticles. Preapical teeth absent. Upper scrobe margin ends anterior of preocular groove; when viewed in profile, upper scrobe margin curves downwards at anterior margin of vertical preocular groove of side of head and almost meets preocular lamina; scrobe margin does not extend across dorsal apex of preocular groove so that the latter extends uninterrupted to the cephalic dorsum. Eye large, convex, and plainly visible in full-face view. Dorsum of head evenly and gradually curved from middorsum to posterior margin of occipital corner; in profile, outline of dorsal margin of occipital corners curved. Scape long and slender, approximately straight, the leading edge with a row of slender hairs which are slightly flattened or spoon-shaped apically. Cephalic dorsum with inconspicuous curved fine ground-pilosity; the upper scrobe margin without a row of hairs. Cephalic dorsum with 4 simple standing hairs arranged in a transverse row close to the occipital margin. Dorsum of head reticulate-punctate. Alitrunk dorsum without standing hairs. Propodeum without a pair of short posteriorly curved hairs i m mediately anterior of propodeal spines. Ground-pilosity on alitrunk as on head but sparser. With the alitrunk in profile the posterior portion of the mesonotum sharply depressed, the metanotal groove represented by a shallow impression. Pronotal humeri rounded. Lateral margin of posterior pronotum bluntly marginate. Anterior mesonotum without a narrow carina above the mesothoracic spiracle. Propodeal spines slender, almost spiniform; spines long, much longer than distance between base of spines; propodeal lamella absent. Alitrunk dorsum and sides reticulate-punctate. Petiole node in dorsal view reticulate-punctate and much longer than broad. Postpetiole reticulate-punctate. Waist segments without spongiform appendages. Disc of postpetiole with spongiform collar. Basigastral costulae absent. First gastral tergite and sternite with superficial reticulate-punctate sculpture over the anterior half or less of the sclerite, remainder of gaster smooth and shiny. Petiole without erect hairs. Dorsal surface of postpetiole with a pair posteriorly projecting stout hairs; gaster with stout standing hairs which are weakly swollen apically. Colour dull yellow to light brown.

Paratypes. TL 3.3-3.5, HL 0.80-0.85, HW 0.48-0.54, CI 60-64, ML 0.49-0.52, MI 60-64, SL 0.63-0.67, SI 117-132, PW 0.30-0.34 AL 0.87-0.93 (4 easured). As holotype.

Measurements of this material extend the range shown by the type-series: HL 0.85-0.97, HW 0.52-0.59, CI 58-66, ML 0.53-0.59, MI 61-64, SL 0.66-0.74, SI 115-131 (5 measured).

Type Material
Holotype worker, Madagascar: Provo Antsiranana, R.S. Manongarivo, 10.8 km. 229° SW Antanambao, 400 m., 13°57.7'S, 48°26.0'E, 8.xi.1998, sifted litter (leaf mold, rotten wood). rainforest #1996 (37)-3 (B. L. Fisher).

Paratypes. 22 workers and 3 queens (dealate) with same data as holotype but coded (2)-4, (21)-4, (27)-2, (28)-4, (29)-2, (30)-5, (31)-1, (31)-2, (34)-2, (38)-4, (40)-4, (41)-2, (42)-3, (44)-2, (46)-5, (54)-3, (54)-5, (57)-2, (60)-3, (64)-1, (64)-2, (65)-1, (68)-3, (74)-2.