Forelius heyeri Guerrero 2021, comb. nov.

• Main Author: Guerrero, Roberto J.
• Format: Other/Unknown Material
• Language: unknown
• Published: 2021
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Insecta; Hymenoptera; Formicidae; Forelius; Forelius heyeri; Argentina; Shattuck; Tucumán; Uruguay; Antarc*; antarcticus
• Online Access: https://zenodo.org/record/4531739; https://doi.org/10.5281/zenodo.4531739

Forelius heyeri (Forel 1902) comb. nov. (Figs 5–10) Tapinoma heyeri Forel 1902: 296. Syntype workers [two workers], S„o Leopoldo, Rio Grande do Sul, Brazil (Heyer) [MHNG, examined]. One syntype worker (CASENT0909771) here designated lectotype. Tapinoma heyeri var. risii Forel 1912: 58. Holotype worker (by monotypy), Montevideo, Uruguay (D. Ris) [MHNG, examined] (CASENT0909772). Forelius breviscapus var. pusilla Santschi 1922: 374. Syntype worker(s), Cordoba, Argentina (Biraben) [NHMB, AntWeb image of syntype examined, CASENT0911547]. Forelius pusillus Santschi. Status as species, senior synonym of Forelius tucumanus (Kusnezov 1953): Cuezzo 2000: 263. Junior synonym of F. heyeri (syn. nov.): present study. Forelius heyeri risii (Forel). Combination in Forelius (comb. nov.) and junior synonym of F. heyeri (syn. nov.): present study. Neoforelius tucumanus Kusnezov 1953: 330, figs. 1–12. Holotype male, nontype workers, queens: Argentina, Tucumán, 14 Dec 1949 (Kusnezov) [not examined]. Junior synonym of Forelius pusillus Santschi: Cuezzo 2000: 263. Forelius tucumanus (Kusnezov). Combination in Forelius: Shattuck 1992: 95. Junior synonym of F. heyeri: present study (syn. nov.). Additional Material examined. Uruguay: Lavalleja; 34º17’02.6”S 55º15’27.7”W; 4 m; manual collection; 07.Jun.2016; foraging on coarse sand dune; RJ Guerrero RJGF-0185 (3w) (CBUMAG). Additional specimen images examined, provided by www.antweb.org. Paraguay: Canindeyú, Tendal, 24°12’20.112”S 55°33’57.167”W; 212m; 20.Nov.2002. A.L. Wild AWL1710 (1w) (ALWC). CASENT0173739. Worker measurements. Lectotype: HL 0.57, HW 0.51, SL 0.47, WL 0.69, CI 90, SI 92. Other material (n= 7): HL 0.45–0.53, HW 0.39–0.51, SL 0.32–0.43, WL 0.48–0.68, CI 83–96, SI 80–91. Diagnosis. Posterior cephalic margin completely straight. Mandible with five teeth and one denticle. Scape much shorter (± 0.43 mm) than that of F. antarcticus (SL Ż 0.69 mm), below or barely reaching the posterior cephalic margin by a length less than the width of the pedicel. Pronotum with two thick ...