Monomorium mitchell

AntWiki - Where Ant Biologists Share Their Knowledge
Jump to navigation Jump to search
Monomorium mitchell
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Myrmicinae
Tribe: Solenopsidini
Genus: Monomorium
Species: M. mitchell
Binomial name
Monomorium mitchell
Sparks, 2015

Little is known about the biology of Monomorium mitchell.

Identification

Sparks et al. (2015) - A member of the M. rothsteini complex. Large, dark orange species with a concave clypeus, strigate frons and sculptured mesonotum. The head is narrowed behind the eyes and dorsolateral angles of the propodeum almost form a right angle, giving the propodeum a cuboid appearance.

Keys including this Species

Distribution

Distribution based on Regional Taxon Lists

Australasian Region: Australia (type locality).

Distribution based on AntMaps

AntMapLegend.png

Distribution based on AntWeb specimens

Check data from AntWeb

Biology

Genetics

COI sequences. Genbank accession numbers for this species are KC573013 and KC573014.

Castes

Nomenclature

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

  • mitchell. Monomorium mitchell Sparks, in Sparks, Andersen & Austin, 2015: 514, figs. 6j–l, 11e (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

(n=9). HW 0.80–0.94, HL 0.94–0.96, EL 0.19–0.2, PMH 0.37–0.39, PH 0.29–0.33, PNH 0.23–0.25, LHW 0.57–0.59, EW 0.12–0.14, PML 0.66–0.68, ML 0.99–1.11, PL 0.43–0.49, PNWdv 0.27–0.31.

Large species with a medium sized, rectangular head; posterior cephalic margin straight to shallowly depressed medially; head distinctly narrowed behind eyes. Anterodorsal margin of the clypeus concave with frontolateral carinae forming angular ridges that extend just beyond anteroventral clypeal margin forming obtuse angles. Sculpture on frons strigate, extending well above antennal lobes; coarse lateral cephalic strigae reach anterior eye margin. Eyes medium, EW 0.20–0.23 x LHW, 13 ommatidia in longest vertical axis, 11 in longest horizontal axis.

Mesonotum alveo/strigulate over most of area posteriad of promesonotal suture, a small central area without sculpture. Metanotal groove broad and deep. Mesopleuron alveolate, strigae extending less than half way on to mesopleuron from both promesonotal suture and metanotal groove, a few irregular strigulae on ventral third. Propodeum in lateral view with dorsolateral angles almost forming a right angle, propodeum appears cuboid. Propodeum alveolate, laterally with strigae extending over metapleural gland bulla and reaching metanotal groove, between metanotal groove and spiracle, extending on to dorsal surface and on lateral face of posterodorsal corners; dorsal surface with anterodorsal transverse carina weekly present, transverse strigae present longitudinal strigae present as several irregular lines, dorsal concavity restricted to posterior half, anterior half rounded. Petiole node of medium breadth, between 2 and 2.5 x eye width when viewed from above, shape in posterior view tapered from widest point to rounded apex, in lateral view with anterior and posterior faces sub parallel, apex broadly rounded from higher anterior face to lower posterior face. Petiole and postpetiole finely reticulate laterally and basally, smooth dorsally. T1 finely reticulate on at least anterior half of surface.

Head, mesosoma and legs dark orange brown, antennal scapes dark brown, petiole and postpetiole dorsally infuscated, metasoma dark brown except T1 medially infused with amber, sternites amber.

Type Material

Holotype worker. Western Australia, Kimberley Region, Mitchell Falls, -14.8167, 125.6833, 18 Jun 2007, A. Andersen, TERC17 (deposited in WAM). Paratypes. Western Australia, 20 workers, same data as holotype, 20 workers, same data as holotype, TERC18 (deposited in NTM, South Australian Museum, WAM).

Etymology

The specific name is a noun in apposition taken from the type locality.

References

  • Sparks, K.S., Andersen, A.N. and Austin, A.D. 2015. Systematics of the Monomorium rothsteini Forel species complex (Hymenoptera: Formicidae), a problematic ant group in Australia. Zootaxa. 3893:489–529. doi:10.11646/zootaxa.3893.4.2