Metapone quadridentata

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Metapone quadridentata
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Myrmicinae
Tribe: Crematogastrini
Genus: Metapone
Species: M. quadridentata
Binomial name
Metapone quadridentata
Eguchi, 1998

Taylor,-Alpert-2016-Metapone-21-53.jpg

Taylor,-Alpert-2016-Metapone-21-54.jpg

M. quadridentata is known only from the original series (11 workers and a gyne ) collected from a nest in rotten fallen wood, plus a single worker collected separately at the same locality (Eguchi, 1998).

Identification

Keys including this Species

Distribution

Distribution based on Regional Taxon Lists

Indo-Australian Region: Borneo (type locality), Indonesia, Malaysia.

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.

  • quadridentata. Metapone quadridentata Eguchi, 1998: 605, figs. 1-3 (w.q.l.) BORNEO.

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

Description

Worker

Taylor and Alpert (2016) - (After Eguchi, 1998): TL 4.9–8.3; HL: 1.11–1.91; HW: 0.76–1.33; CI: 68, 70. CpL: 0.43–0.68; CpI: 39, 36; MSL: 1.30–2.44; PML: 0.63–1.26; PMW: 0.55–1.07; PMI: 48, 56; PDW: 0.48–0.88; PetL: 0.33–0.63; PetW: 0.35–0.68; PetH: 0.50–0.88; PpetL: 0.33–0.64; PpetW: 0.42–0.83; GW: 0.80–1.41. The cited indices were calculated from Eguchi’s smallest and largest measurements for HL and HW (CI), HL and CpL (CpI) and MSL and PML (PMI). Cephalic proportions stated in the original description are equivalent to a CI range of 67–71, and the holotype has CI 71. Additional measurements are given with the original description. The smallest and largest of four paratype workers studied here have: HL (midline) 1.21, 1.68; HL (maximum) 1.26, 1.70; HW 0.87, 1.19; CI (based on midline HL) 72 71; PMW 0.57, 0.92. Note that Eguchi measured maximum HL so as to include the occipital lobes. Our measurements are taken from the midline of the occipital border.

General features as in original description (Eguchi, 1998), the key to Asian species and figures. Eyes relatively moderately large, multifaceted, maximum diameter around 2/3 the maximum width of an apical antennomere. Subpetiolar lamella in profile an anteriorly positioned, erect, translucent, posteroventrally bluntly-pointed hook-like structure, behind which the ventral subpetiolar edge curves quite strongly to meet the subpetiolar angle which encloses approximately 90° in lateral view. Posterior subpetiolar face approximately equilaterally triangular in oblique view, its outer margins with a fine raised, translucent, laminate carina which is higher towards the apex of the posterior face, and forms a distinctive translucent margin to the posterior subpetiolar profile in lateral view, visually doubling the outline. Subpostpetiolar process barely inflated anteroventrally, forming a slightly acute angle in profile; the anterior face small, sub-semicircular in oblique view

Type Material

Taylor and Alpert (2016) - Worker, Gyne, Male; Type locality: Poring [06N, 116E], Sabah, Malaysia. Four worker paratypes from the Katsusuki Eguchi collection; one now deposited in Australian National Insect Collection.

References