Shattuck, Gunawardene & Heterick, 2012
Probolomyrmex newguinensis has been collected only once from a nest under a rock in a regenerated rainforest in Papua New Guinea.
Petiolar node relatively long and narrow (best viewed dorsally), the dorsal face (in side view) moderately convex anteriorly and weakly convex posteriorly; posterodorsal margin of petiole in dorsal view produced medially into a rearward directed rounded projection; subpetiolar process reduced to a shallow convexity.
Probolomyrmex newguinensis is morphologically similar to Probolomyrmex watanabei from Malaysia, particularly in the shape of the petiole. It differs from that species in having the petiole more barrel-shaped in dorsal view rather than trapezoidal, and in having the anterior face of the node (in side view) more strongly convex, giving the petiole a higher appearance. Additionally, the head is more elongate (CI < 61 vs. > 62) and the scape is shorter (SI < 114 vs. > 124).
Keys including this Species
Distribution based on Regional Taxon Lists
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.
- newguinensis. Probolomyrmex newguinensis Shattuck, Gunawardene & Heterick, 2012: 45, fig. 4 (w.m.) NEW GUINEA.
- Holotype, worker, Bulolo, Morobe District, Papua New Guinea, Australian National Insect Collection; regenerated rainforest and bamboo, under small mossy rock in jet black soil. , 31 Dec. 1970, B.B. Lowery, ANIC32-066450,
- Paratype, 8 workers, 1 male (missing head), Bulolo, Morobe District, Papua New Guinea, Australian National Insect Collection; regenerated rainforest and bamboo, under small mossy rock in jet black soil. , 31 Dec. 1970, B.B. Lowery, ANIC32-066468,
Worker description. Body dark ferruginous brown. Head in full-face view with weakly convex sides and weakly and broadly concave posterior margin. Eyes absent. Antennae moderately long. Dorsal outline of mesosoma very weakly convex with a slight concavity at the metanotal groove; posterior margin of propodeal dorsum in dorsal view drawn posteriorly into a broad, rounded projection; posterior face of propodeum angled laterally and lacking a well-developed lamella. Petiole including subpetiolar process longer than high, its dorsal surface in profile relatively strongly convex anteriorly and rounding into a weakly convex to nearly flat surface posteriorly; subpetiolar process reduced to a weak convexity. Abdominal segment III (gastral segment I) in profile narrowed anteriorly, the ventral surface concave anteriorly and convex posteriorly.
Measurements. Worker (n=6)—CI 59–61; DPetW 0.21–0.24; HL 0.71–0.75; HTL 0.50–0.55; HW 0.43–0.46; LPetI 118–123; ML 0.97–1.03; PetH 0.30–0.31; PetNL 0.35–0.37; PronW 0.36–0.37; SI 110–114; SL 0.48–0.51
- Shattuck, S.O., Gunawardene, N.G. & Heterick, B. 2012. A revision of the ant genus Probolomyrmex (Hymenoptera: Formicidae: Proceratiinae) in Australia and Melanesia. Zootaxa 3444: 40–50.