Meranoplus digitatus

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Meranoplus digitatus
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Myrmicinae
Tribe: Crematogastrini
Genus: Meranoplus
Species: M. digitatus
Binomial name
Meranoplus digitatus
Schödl, 2007

Meranoplus digitatus p.jpg

Known from the Murray-Darling basin.

Identification

Schödl (2007) - Distinct from Meranoplus naitsabes and Meranoplus convexius by the more or less digitate posterior mesonotal projections which only seldomly are fused by lamellate material. Rather uniformly ferrugineous with gaster and appendages usually only feebly brighter than remainder of body.

Keys including this Species

Distribution

Distribution based on Regional Taxon Lists

Australasian Region: Australia (type locality).

Distribution based on AntMaps

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Distribution based on AntWeb specimens

Check data from AntWeb

Biology

Castes

Worker

Nomenclature

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

  • digitatus. Meranoplus digitatus Schödl, 2007: 384, figs. 30, 31, 67, 84 (w.) AUSTRALIA.

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

Description

Worker

Holotype. TL 6.30, HL 1.70, HW 1.88, FC 1.41, CS 1.79, SL 0.80, SI1 43, SI2 45, PML 1.15, PW 1.50, PMD 1.65, PMI2 110, ML 1.38, PSL 0.70, PTLL 0.45, PTLH 0.63, PTI 72, PTDW 0.61, PPLL 0.43, PPLH 0.65, PPI 66, PPDW 0.61, PT/PP 100.

Mandible with three teeth. Clypeal projection similar to that of preceding species. Frontal carinae broad, distinctly sinuately narrowed towards clypeus (FI 123). Head wider than long (CI 110), preoccipital margin similar to that of preceding species. Antennal scrobe scarcely surpassing middle of lateral sides of head and posterior ocular margin, anteriorly glossy, transversely carinulate at rear, posteriorly indistinctly demarcated from remainder of head. Genae and ventrolateral sides of head rugose, preoccipital lobes reticulate-foveolate. Eyes relatively larger (EL 0.31, REL 0.18, with 19 ommatidia in the longest row), situated anteriorly to middle of lateral sides of head, dorsal ocular margin not reaching ventral scrobal margin. Head in posterior half distinctly reticulate to reticulate-foveolate, in between ridges of rugoreticulation with very faint microsculpture.

Promesonotal shield vaulted, distinctly wider than long (PMI 130), only pronotal lateral sides translucently margined, mesonotal posterolateral and posterior projections digitate, dorsally irregularly rugoreticulate, with the meshes elongate and longitudinally orientated. Propodeal declivity partly overhung by posterior mesonotal margin. Propodeal spines relatively long (PSL 0.70) situated above middle of length of declivity, straight, acute and moderately diverging when seen from above.

Petiole in lateral view higher than long (PTI 72), with anterior face straight, meeting convex posterior face in a crest. Postpetiole nodiform with a small anterio-basal tooth.

Gaster entirely microreticulate, with occasional glossy spots inbetween. Surface covered with evenly distributed pilosity consisting of shorter decumbent and longer more or less erect arcuate stiff hairs.

(n = 9). TL 5.40-6.30, HL 1.40-1.70, HW 1.55-1.88, FC 1.20-1.41, FI 128-137, CI 107-112, CS 1.48-1.79, SL 0.71-0.80, SI1 41-47, SI2 43-48, PML 0.95-1.15, PW 1.26-1.50, PMI 130-138, PMD 1.33-1.60, PMI2 103-111, ML 1.23-1.38, PSL 0.55-0.70, PTLL 0.36-0.45, PTLH 0.55-0.63, PTI 66-74, PTDW 0.48-0.61, PPLL 0.35-0.43, PPLH 0.50-0.65, PPI 64-75, PPDW 0.48-0.63, PT/PP 92-105, EL 0.26-0.31, REL 0.16-0.20, with 17-19 ommatidia in the longest row.

Type Material

Holotype worker, New South Wales: 'N.S.W. Goolgowi 18.vii.1979 BBLowery Red soil \ ANIC ANTS VIAL 68.123' (Australian National Insect Collection). Paratypes. 8 workers, same data as holotype (ANIC, Naturhistorisches Museum Wien, Vienna).

Etymology

The name refers to the digitate projectons on the mesonotal hind margin.

References

  • Schödl, S. 2007. Revision of Australian Meranoplus: the Meranoplus diversus group. Memoirs of the American Entomological Institute. 80:370-424.