Cephalotes dentidorsum De Andrade, 1999

Pazmiño-Palomino, Alex & Troya, Adrian, 2022, Ants of Ecuador: new species records for a megadiverse country in South America, Revista Brasileira de Entomologia (e 20210089) 66 (2), pp. 1-15 : 5-6

Cephalotes dentidorsum De Andrade, 1999

Figs. 9 , 21C Material examined. Ecuador. Sucumbíos: Puchuchoa ravine forest,

0.08094°N, 77.27877°W, 411 m, 3☿, 2003-01-23, Araujo, P. & Enríquez,

S., fogging, (MEPN).

Comments. This rare species is phylogenetically placed in the C. angustus clade sensu De Andrade and Baroni Urbani (1999) and confirmed in Oliveira et al. (2021). Workers of C.dentidorsum are highly similar to those of the also rare C. adolphi Emery. They differ only in the sculpture of the first gastral segment being opaque and with slight punctae in C.adolphi , and smooth and shining in C. dentidorsum . Based on their morphological features these two species should be very closely related, which is confirmed through analysis of COI gene sequences (<2% interspecific divergence) (Troya & Donoso, unpublished data). Nothing is known about the biology of C.dentidorsum , which has only been previously recorded in western Amazonia ( Peru), while C.adolphi has been recorded in Brazil (Mato Grosso, Minas Gerais and Distrito Federal) ( De Andrade & Baroni Urbani, 1999; Oliveira et al., 2021).

Figures

Figure 9 Cephalotes dentidorsum De Andrade (worker, MEPN 28208):A) dorsal view, B) frontal view, C) profile. Images by Adrian Troya. Scale bars = 1 mm.

Figure 21 Geographic distribution of the species examined in the present study.