Monomorium eremophilum

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Monomorium eremophilum
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Myrmicinae
Tribe: Solenopsidini
Genus: Monomorium
Species: M. eremophilum
Binomial name
Monomorium eremophilum
Heterick, 2001

Monomorium eremophilum casent0902303 p 1 high.jpg

Monomorium eremophilum casent0902303 d 1 high.jpg

Specimen Labels

An inhabitant of arid areas, little is known about the biology of Monomorium eremophilum.

Identification

Heterick (2001) - A member of the monomorium group. Monomorium eremophilum resembles a diminutive Monomorium rothsteini, and shares with that species a PF of2,2. However, the shape of the eye is quite different, and the two taxa do not appear to be closely related. Moreover, the broad head of M. eremophilum serves to distinguish it from other small Monomorium with a PF of 1 ,2 and a rather oblique or reniform eye-shape.

Heterick (2009) - This species looks like a miniature Monomorium rothsteini but has 11-segmented antennae and the eye is elongate rather than ovate.

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

Known only from the worker caste.

Nomenclature

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

  • eremophilum. Monomorium eremophilum Heterick, 2001: 400, figs. 38, 134, 137 (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. HML 1.54; HL 0.67; HW 0.62; Cei 93; SL 0.41; SI 67; PW 0.32. Others. HML 1.15-1.71; HL 0.46-0.71; HW 0.43-0.72; CeI 91-102; SL 0.28-0.51; SI 64-77; PW 0.24-0.34 (19 workers.)

As for the worker of Monomorium sydneyense, but with the following apomorphies.

Head. Frons of head capsule smooth and shining with evenly spaced, appressed setulae. Compound eyes reniform, with posterior surface of eye emarginate, or elongate, much longer than wide; (viewed laterally) compound eyes set at midline of head capsule; eye large, eye width greater than 1.5 x greatest width of antennal scape. Anteromedial clypeal margin emarginate, median clypeal carinae produced apically as pair of pronounced teeth. Venter of head capsule with elongate, basket-shaped setae in at least some individuals. Palp formula 2,2.

Alitrunk. Promesonotal sculpture present in form of microreticulation and striolae on and around katepisternum, otherwise promesonotum smooth and shining; dorsal promesonotal face evenly convex; erect and suberect promesonotal setae absent. Propodeal sculpture present as uniform microreticulation, with few or no striae or costulae; propodeal processes absent (propodeum smoothly rounded in profile or with slight hump at propodeal angle), or present as pronounced lamellae formed by extension of metapleural lobes. Declivitous face ofpropodeum flat. Erect and suberect propodeal setae >5; propodeal setulae absent.

Petiole and postpetiole. Petiolar node conical, dorsally rounded, or cuneate, dorsally rounded, or tumular and inclined anteriad. Ratio of greatest node breadth (viewed from front) to greatest node width (viewed in profile) near 4:3. Height ratio of petiole to postpetiole near 4:3.

Gaster. Pilosity of first gastral tergite consisting entirely of well-spaced appressed setulae.

General characters. Colour either pale orange with gaster fulvous, or chocolate brown with mandibles and appendages amber. Worker caste monomorphic.

Type Material

Etymology

Greek: “lover of deserts”.

References