Monomorium guineense

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Monomorium guineense
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Myrmicinae
Tribe: Solenopsidini
Genus: Monomorium
Species: M. guineense
Binomial name
Monomorium guineense
(Bernard, 1953)

Monomorium guineense casent0915420 p 1 high.jpg

Monomorium guineense casent0915420 d 1 high.jpg

Specimen Labels

Known from rainforest and primary forest leaf-litter samples.

Identification

Bolton (1987) - A member of the hanneli species group. Because of its relatively broad and narrow nodes guineense was first described in Epixenus, a spurious generic name which covered a loose assemblage of salomonis-group species linked by their development of apterous or ergatoid females and a tendency in some of their females to possess relatively broad narrow nodes. This was obviously the criterion uppermost in Bernard's mind when he assigned guineense to Epixenus, but it is now plain that guineense is not closely related to any salomonis-group species.

Separated from Monomorium invidium by the characters noted in the description. The third West African species of this group, Monomorium jacksoni, is quickly separated from guineense as the former has the propodeum very strongly sculptured, as well as having petiole and postpetiole nodes which are broader than in guineense.

Keys including this Species

Distribution

Distribution based on Regional Taxon Lists

Afrotropical Region: Cameroun, Guinea (type locality).


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.

  • guineense. Epixenus guineensis Bernard, 1953b: 238, fig. 10 (w.) GUINEA. Combination in Monomorium: Brown & Wilson, 1957b: 245. See also: Bolton, 1987: 426.

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

Description

Worker

Bolton (1987) - TL 2.3, HL 0.56, HW 0.48, CI 86, SL 0.38-0.39, SI 79-81, PW 0.35-0.36, AL 0.62 (2 measured).

As the more common and more widely distributed Monomorium invidium but with smaller eyes, the maximum diameter 0.13 x HW and with 4 ommatidia in the longest row. The head and alitrunk are unsculptured everywhere except for faint hair-pits, and the propodeal dorsum lacks the faint transverse rugulae usually seen in invidium. In profile the propodeal dorsum meets the declivity in a pair of prominent but obtuse angles and the body colour is uniform dark brown. The nodes of the petiole and postpetiole are much more strongly antero-posteriorly compressed and scale-like than in any other member of the group, the nodes in profile being high narrow and very narrowly rounded dorsally. The postpetiole is slightly narrower than the petiole in profile. In dorsal view both nodes are broad, the dorsal surfaces very short from front to back and the postpetiole only fractionally thicker than the petiole.

Type Material

Bolton (1987) - Syntype workers, Guinea: Mont To, ravin 1, st. B2.41, foret, 21.2 (Lamotte) (Musee National d'Histoire Naturelle) [examined].

References