Pseudomyrmex parvulus

P. parvulus is known only from two rainforest sites in Amazonas, Brazil (workers from canopy fogging project), and one rainforest location in the Sierra de Huanchaca, Bolivia (dealate queen on low vegetation). (Ward, 2017)

Identification
In this species the head is densely punctulate between the compound eyes and most of the body has a matte texture. In this respect P. parvulus is similar to P. obtusus, but it is smaller in size (HW 0.56–0.60, with a more elongate head (CI 0.75–0.78) and a pair of setae on the pronotal humeri (absent in P. obtusus).

Distribution based on Regional Taxon Lists
Neotropical Region: Bolivia, Brazil.

Biology
P. parvulus is known only from two rainforest sites in Amazonas, Brazil (workers from canopy fogging project), and one rainforest location in the Sierra de Huanchaca, Bolivia (dealate queen on low vegetation).

Nomenclature

 *  parvulus. Pseudomyrmex parvulus Ward, 2017: 539, figs. 8 (w.) BRAZIL.

Description
Smaller species (HW 0.56–0.60) with moderately elongate head and eyes (CI 0.75–0.78, REL 0.64–0.65); palp formula 5,3; juncture between dorsal and declivitous faces of propodeum subangulate, and with weak lateral tubercles (Fig. 8b); anterodorsal face of petiole ascending rapidly (Fig. 8b). Front of head between eyes densely punctulate and sublucid, the punctures separated by about their diameters; head sparsely punctulate and shiny around the ocelli, then more densely punctulate and sublucid at the posterior margin; mesosoma finely coriarious-imbricate and largely opaque; petiole, postpetiole and gaster with very fine dense pubescence, imparting a matte appearance. Standing pilosity very sparse, absent from petiole; a pair of setae present on the pronotal humeri and on the postpetiole (latter pair very short and inconspicuous). Medium yellowish-brown, the pronotum, petiole, postpetiole and appendages lighter.