Strumigenys diabola

Identification
Bolton (2000) – Closely related to Strumigenys cordovensis but with enormously elongated mandibles, a longer narrower petiole node and smaller femoral gland bullae.

Distribution based on Regional Taxon Lists
Neotropical Region: Brazil.

Nomenclature

 *  diabola. Strumigenys diabola Bolton, 2000: 533, fig. 316 (w.) BRAZIL.

Worker
Holotype. TL 4.2, HL 0.88, HW 0.69, CI 78, ML 1.20, MI 136, SL 0.72, SI 104, PW 0.39, AL 0.83. Characters of cordovensis-complex. Distal preapical tooth very long and narrowly spiniform, much closer to apicodorsal tooth than to proximal preapical tooth. With mandible in profile distal preapical tooth strongly elevated; shaft of mandible distinctly upcurved from close to midlength to level of distal preapical tooth, thereafter flexed weakly downward to the apical fork. Standing hairs on head and alitrunk stiff, narrowly remiform apically: one in apicoscrobal position; a pair on vertex close to occipital margin; one at each pronotal humerus; absent from mesonotum. Petiole, postpetiole and basal quarter of first gastral tergite with fine curved filiform to subflagellate hairs. Bullae of femoral glands short and subovate, located at or proximal of the dorsal mid length on the middle and hind femora. Propodeal lamella acutely bitriangular to bispinose, lower lobe longer than upper. Lateral spongiform lobe of petiole large and extends forward on side to level of anterior face of node. Petiole node reticulate-punctate, as long as broad in dorsal view. Lateral and ventral spongiform lobes of postpetiole massive. Disc of postpetiole sparsely longitudinally costulate. Basigastral costulae sharply defined, longer than width of posterior spongiform collar of postpetiole but shorter than disc.

Paratypes. TL 4.2, HL 0.88-0.92, HW 0.70-0.73, CI 79-80, ML 1.22-1.24, MI 133-141, SL 0.74-0.75, SI 101-107, PW 0.39, AL 0.82-0.82 (2 measured).

Type Material
Holotype worker, Brazil: Amazonas, Igarape Marianil, at R. Branco Rd, km. 5, ca 24 km. NE of Manaus, 22.viii.1962 (W. L. Brown).

Paratypes. 1 worker, Brazil: Amazonas, Manaus, Colosso, 11.v.1994, #764 (R. Didham); 1 worker, Amazonas, Manaus, ZF2, 2°38'S, 60°09'W, 29.vii.1997, 02, T34; 0027631 (G. Cabini, J. M. Vilhena & H. Vasconcelos.

Determination Clarifications
Bolton (2000) - The holotype of this species is the specimen dubiously referred to Strumigenys dolichognatha by Kempf (1975).