Probolomyrmex brujitae Agosti, 1995,

Oliveira, Aline M. & Feitosa, Rodrigo M., 2019, Taxonomic revision of the genus Probolomyrmex Mayr, 1901 (Hymenoptera: Formicidae: Proceratiinae) for the Neotropical Region, Zootaxa 4614 (1), pp. 61-94: 72-74

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Probolomyrmex brujitae Agosti, 1995


Probolomyrmex brujitae Agosti, 1995 

( Figs. 11View FIGURE 11, 12View FIGURE 12, 13View FIGURE 13)

Holotype: ARGENTINA: Salta: Aguas Blancas - Yaculica, 22°43’44”S 64°22’25”W, 25.x.1994, D. Agosti & J. M. Carpenter, Winkler Yungas forest , leaf-litter, 35469 (worker) [ MCZ] [examined].GoogleMaps 

Paratype: same data as holotype, except: ATNC6044 (1 queen) [ AMNH] [examined by images in; specimen CASENT0104672].

Diagnosis: Postero-ventral lobe of petiole long and subquadrate. Subpetiolar process weakly developed and anteriorly directed. Prora and protuberance on posterior region of first gastral tergite absent.

Worker measurements: (n=12) HL 0.48–0.56; HW 0.30–0.33; SL 0.28–0.33; WL 0.61–0.70; PL 0.22–0.34; PW 0.24–0.26; PH 0.20–0.24; TL 2.17–2.41; CI 56.5–64; SI 56.5–64.5; PI 75.5–92.5.

Worker description: Frontoclypeal shelflike projection and mandibles foveolate, with hair-bearing tubercles or cylindrical micro-pegs; external surface of mandibular basal margin transversely striolate ( Fig. 11BView FIGURE 11 – esm). Tip of apical antennal segment bearing minute pits ( Fig. 11CView FIGURE 11 – Ap). Mesopleuron, metapleuron and lateral faces of propodeum alveolate and foveate; alveoli denser just above metapleural gland orifice; opening of metapleural gland narrow, with smooth anterior region, surrounded by rows of hairs ( Fig. 11DView FIGURE 11). Petiolar node foveate, interval between foveae covered by micropunctures (punctulae); postero-ventral lobe and latero-ventral region of petiole alveolate, with short hair projecting from each alveolus; subpetiolar process alveolate ( Fig. 11EView FIGURE 11). Posterior region of second gastral segment with foveae.

Space between mesosomal foveae covered by dense pubescence. Pygidium with hair-bearing tubercles or cylindrical micro-pegs.

Head 1.6 times longer than wide ( Fig. 12BView FIGURE 12). Hypostomal margin curved ( Fig. 11BView FIGURE 11 – he). Antennal scapes extend to head mid length, distance from scape apex to of head more than two times pedicel length (SI 56.5–64.5). Propodeal declivity with lateral carina, laterodorsal teeth present. Petiole in lateral view at least 1.2 times longer than high (PI 75.5–92.5), apex with two weakly developed posterior teeth; posterior face short, concave and smooth; postero-ventral lobe long and subquadrate; subpetiolar process weakly developed and directed anteriorly ( Fig. 11EView FIGURE 11). First gastral segment without prora or dorsal protuberance on posterior region of tergite ( Fig. 12AView FIGURE 12).

Queen (n=3) HL 0.50–0.52; HW 0.32–0.33; SL 0.31–0.33; WL 0.67; PL 0.23–0.25; PH 0.21–0.22; TL 2.21– 2.28. CI 64.5; SI 62.5–64.5; PI 85.5–92. Queen presents the characters already described in the genus description and the diagnostic characters of the workers ( Fig. 13View FIGURE 13).

Distribution ( Fig. 29View FIGURE 29): Northwest Argentina (Salta), North and Midwest Brazil (GO, MA, MS, MT, RO, and TO).

Comments: This species differs from all others by the weak, anteriorly directed subpetiolar process. All specimens were obtained from leaf-litter samples. There is a record of a single individual of P. brujitae  in Bahia, Brazil ( Nascimento et al. 2004). However, after careful examination of the specimen, we concluded it actually corresponds to a different and undescribed species. We refrain from describing it here, since the only known specimen is in very poor condition.

Additional material examined (n=40): BRAZIL: Goiás: Jataí, Faz.Ariranha , 17°57’34”S 51°51’34”W, 797m, 11.ii.2009, G.G. Santos col, Frag. 02, M. W. Ponto 23 (1 queen) [ MZSP]GoogleMaps  ; Faz. Leão , 17°48’24”S 51°41’41”W, 21.ii.2009, G. Santos & S. Barbosa cols, Mini-winkler Pto 2 (1 worker) [ MZSP]; (1 worker)GoogleMaps  [ DZUP]; Maranhão: Estreito, Faz. Planalto , 06°35’59.3”S 47°24’50.4”W, 12–22.ii.2006, Silva R.R. & Feitosa R.M. cols, Winkler 5 (1 worker) [ DZUP]; (2 workers)GoogleMaps  [ MZSP]; Winkler 1 (3 workers) [ MZSP]; (2 workers)  [ MPEG]; Winkler 2 (1 worker) [ MZSP]  ; 12–, Winkler 7 (1 worker) [ DZUP]  ; Mato Grosso: Alta Floresta , 09°53’S, 56°28’W, iii–vii.2008, Castuera de Oliveira L., Winkler (1 worker - 1 queen) [ MZSP]GoogleMaps  ; Mato Grosso do Sul: Bodoquena, Fazenda Santa Laura da Vicunha I Farm , 20°47’59.94” S 56°44’54.05”W, 2010, Silvestre, R. & Demétrio, M.F. cols. (1 worker) [ UFGD]GoogleMaps  ; II Farm , 20°45’53.60”S 56°44’53.10” W (1 worker) [ UFGD]GoogleMaps  ; Campo Grande , RPPN, UFMS, 20°30’39”S 54°36’54”W, 13–19.x.2017, Tibcherani M. eq. Cols, Winkler P 41 (1 worker) [ MPEG]GoogleMaps  ; 20– 26, vii.2017, Tibcherani M. eq. Cols, Winkler P 12 (1 worker) [ MPEG]  ; Jardim, Fazenda Santa Maria da Serra , 21°25’39.24” S 56°45’48.90” W, 2010, Silvestre, R. & Demétrio, M.F. cols. (1 worker) [ UFGD]GoogleMaps  ; Rondônia: Porto Velho, Área Abunã , 09°37’33”S 65°26’38”W, 17–, Albuquerque E. Z. & L.F. Silva cols, A9P2 (2 workers) [ MPEG]; DZUP 549768View Materials (1 worker– 1 queen) [ DZUP]; (1 worker)GoogleMaps  [ DZUP]; (3 workers)GoogleMaps  [ MZSP]; 09°37’40”S 65°27’30”W, 27.iii–09.iv.2011, RR. Silva & EZ Albuquerque cols, A11P3 (1 queen) [ MZSP]GoogleMaps  ; Área Caiçara , 09°26’46.8”S 64°49’31.1”W, 04–18.ix.2012, Vicente R.E. & Oliveira J. cols, C3P2 (1 queen) [ DZUP]GoogleMaps  ; Área Mutum  , 09°35’07”S 65°04’15”W, 29.iii–05.iv.2012, Silva RR & Albuquerque EZ cols, M7P3, (3 workers) [MZSP]; 09°35’44”S 65°04’00”W, 27.iii–09.iv.2011, RR. Silva & EZ Albuquerque cols, M7P1 (4 workers) [MZSP]; Tocan- tins: Palmeirante, 07°52’25.3”S 47°57’07.4”W, 15–19.xii.2001, Albuquerque & Silva cols, Transecto 1, Winkler 8 - Mata ciliar-Cerradão (1 worker) [MZSP].


Museum of Comparative Zoology


American Museum of Natural History


Sao Paulo, Museu de Zoologia da Universidade de Sao Paulo


Universidade Federal do Parana, Colecao de Entomologia Pe. Jesus Santiago Moure


Museu Paraense Emilio Goeldi