Probolomyrmex newguinensis

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Probolomyrmex newguinensis
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Proceratiinae
Tribe: Probolomyrmecini
Genus: Probolomyrmex
Species: P. newguinensis
Binomial name
Probolomyrmex newguinensis
Shattuck, Gunawardene & Heterick, 2012

Probolomyrmex newguineensis ANIC32-066450 side 40-AntWiki.jpg

Probolomyrmex newguineensis ANIC32-066450 top 40-AntWiki.jpg

Specimen labels

Probolomyrmex newguinensis has been collected only once from a nest under a rock in a regenerated rainforest in Papua New Guinea.

Identification

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

Distribution based on Regional Taxon Lists

Indo-Australian Region: New Guinea.

Distribution based on AntMaps

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Distribution based on AntWeb specimens

Check data from AntWeb

Biology

Castes

Nomenclature

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.

Type Material

Description

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

References

  • 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.