Prionopelta opaca

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Prionopelta opaca
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Amblyoponinae
Genus: Prionopelta
Species: P. opaca
Binomial name
Prionopelta opaca
Emery, 1897

Prionopelta opaca casent0102528 profile 1.jpg

Prionopelta opaca casent0102528 dorsal 1.jpg

Specimen labels


This species has been found in rainforests with workers being collected from leaf litter on the forest floor. Nests occur in soil under objects and in rotten wood. P. opaca and Prionopelta robynmae have been collected from the same litter sample in PNG. (Shattuck 2008)


Shattuck (2008) - Anterolateral corners of head, near mandibular insertions, rounded. Dorsal mesosomal sculpturing composed of foveae which are only slightly more dense on the pronotum than on the mesonotum and propodeum, and which are uniformly distributed across the width of the propodeum. Body small, head width less than 0.48mm but petiole relatively broad, PetW greater than 0.21mm.

Keys including this Species


Distribution based on Regional Taxon Lists

Indo-Australian Region: Micronesia (Federated States of), New Guinea, Palau, Solomon Islands.

Distribution based on AntMaps


Distribution based on AntWeb specimens

Check data from AntWeb






The following information is derived from Barry Bolton's New General Catalogue, a catalogue of the world's ants.

  • opaca. Prionopelta opaca Emery, 1897c: 596, pl. 15, figs. 44, 45 (w.q.m.) NEW GUINEA. Wheeler, G.C. & Wheeler, J. 1964b: 447 (l.). Senior synonym of mocsaryi: Brown, in Wilson, 1958a: 149. See also: Shattuck, 2008b: 29.
  • mocsaryi. Prionopelta mocsaryi Forel, 1907a: 1 (w.) PARAGUAY. Junior synonym of opaca: Brown, in Wilson, 1958a: 149.

Unless otherwise noted the text for the remainder of this section is reported from the publication that includes the original description.



Shattuck (2008) - (n=12) CI 76–80; HL 0.47–0.52; HW 0.37–0.41; ML 0.54–0.62; PetL 0.16–0.20; PetW 0.21–0.24; PI 110–136; SI 65–70; SL 0.24–0.27; T1W 0.31–0.36.

Anterolateral corners of head, near mandibular insertions, rounded and lacking a tooth. Dorsal pronotal sculpturing consisting of foveae which are only slightly more dense than on the mesonotum and propodeum. Foveae on dorsum of propodeum uniformly distributed across its width. Lateral mesosomal sculpturing consisting of small foveae on pronotum and anterior region of mesopleuron, ventral regions of mesopleuron and propodeum weakly striate, posterodorsal region of mesopleuron and majority of propodeum smooth. Fenestra present but weakly developed within subpetiolar process. Colour yellow-red to red-brown.

Type Material