Pseudomyrmex goeldii

Ward, Philip S., 2017, A review of the Pseudomyrmex ferrugineus and Pseudomyrmex goeldii species groups: acacia-ants and relatives (Hymenoptera: Formicidae), Zootaxa 4227 (4), pp. 524-542: 540

publication ID

https://doi.org/10.11646/zootaxa.4227.4.3

publication LSID

lsid:zoobank.org:pub:68B993FB-9D8C-4950-9BF8-0D40EDFB8C78

persistent identifier

http://treatment.plazi.org/id/03CC1E39-FF90-FFC7-FF6A-D8B07CC9F9E4

treatment provided by

Plazi

scientific name

Pseudomyrmex goeldii
status

 

Key to species of the P. goeldii  group, based on the workers and queens

This key summarizes the differences discussed above. Sample sizes of measurements are given (e.g., n = 5). Unless otherwise noted, sample sizes are the same for all measurements of a given caste cited within any particular lug of a couplet.

1 Front of head between compound eyes densely punctulate, the punctures separated by their diameters or less, becoming smooth and sparsely punctulate around the ocelli; mesosoma with dense coriarious-imbricate sculpture, and wholly opaque; petiole without erect setae.............................................................................. 2

- Front of head smooth, shiny, and sparsely puncticulate; mesosoma less densely sculptured, appearance shinier, especially on the pronotum; petiole with a pair of erect setae..............................................................3

2 Larger species (worker HW 0.71–0.78, n = 9; queen HW 0.70–0.73, n = 3) with broader head (worker CI 0.80–0.85, queen CI 0.75–0.78); standing pilosity absent from mesosoma; Costa Rica to Peru and Brazil........................... obtusus 

- Smaller species (worker HW 0.56–0.60, n = 3; queen HW 0.58, n = 1) with a more elongate head (worker CI 0.75–0.78, queen CI 0.68); standing pilosity present on the mesosoma as a single pair on the pronotal humeri; Brazil, Bolivia........ parvulus 

3 Larger species (worker HW 0.65–0.66, n = 3; queen unknown, but expected to have similar HW) with shorter eyes (worker REL 0.55–0.56; worker REL2 0.69–0.73); southeastern Brazil............................................. goeldii 

- Smaller species (worker HW 0.47–0.55, n = 22; queen HW 0.49–0.54, n = 9) with more elongate eyes (worker REL 0.57–0.64; worker REL2 0.75–0.87; queen REL 0.55–0.61; queen REL2 0.80–0.90); Nicaragua to Bolivia and central Brazil. ........4 

4 Mesosoma sculpture weaker, especially on the metapleuron, which is partly smooth and shining; juncture of the dorsal and declivitous faces of the propodeum subangulate in worker; petiole relatively low and broad (worker PLI 0.64–0.69, DPW/PH 0.88–0.92; n = 6) and with anterodorsal face more gently sloping than posterodorsal face ( Fig. 6View FIGURES 4 – 6 b); worker REL2 0.75–0.80; Peru, Bolivia.................................................................................... micans 

- Mesosoma sculpture better developed, the metapleuron coriarious-reticulate and subopaque, smooth shiny patches less well developed; in areas of apparent overlap with P. micans  (Peru and Bolivia) worker propodeum more strongly angulate, and petiole shorter and higher (worker PLI 0.72–0.80, DPW/PH 0.76–0.85; n = 5), with more steeply sloping anterodorsal face ( Fig. 5View FIGURES 4 – 6 b); elsewhere worker propodeal angles and petiole shape more variable but tending in the same direction; worker REL2 0.79– 0.87 (n = 16); Nicaragua to Bolivia and central Brazil. ............................................... laevifrons