Monomorium riyadhe

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Monomorium riyadhe
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Myrmicinae
Tribe: Solenopsidini
Genus: Monomorium
Species group: salomonis
Species: M. riyadhe
Binomial name
Monomorium riyadhe
Collingwood & Agosti, 1996

Monomorium riyadhe casent0922342 p 1 high.jpg

Monomorium riyadhe casent0922342 d 1 high.jpg

Specimen Labels

Nothing is known about the biology of Monomorium riyadhe.



Latitudinal Distribution Pattern

Latitudinal Range: 24.633333° to 24.633333°.

Tropical South

Distribution based on Regional Taxon Lists

Afrotropical Region: Saudi Arabia (type locality).

Distribution based on AntMaps


Distribution based on AntWeb specimens

Check data from AntWeb

Countries Occupied

Number of countries occupied by this species based on AntWiki Regional Taxon Lists. In general, fewer countries occupied indicates a narrower range, while more countries indicates a more widespread species.


Estimated Abundance

Relative abundance based on number of AntMaps records per species (this species within the purple bar). Fewer records (to the left) indicates a less abundant/encountered species while more records (to the right) indicates more abundant/encountered species.





The following information is derived from Barry Bolton's Online Catalogue of the Ants of the World.

  • riyadhe. Monomorium riyadhe Collingwood & Agosti, 1996: 354, fig. 26 (w.) SAUDI ARABIA.
    • Type-material: holotype worker.
    • Type-locality: Saudi Arabia: Riyadh Agricultural Station, 26.iii.1983 (C.A. Collingwood).
    • Type-depository: unknown (possibly in WMLC).
    • Status as species: Borowiec, L. 2014: 124.
    • Distribution: Saudi Arabia.

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



Holotype: TL 3.8; HL 0.97; HW 0.73; SL 0.84; EL 0.26; CI 74; SI 114; EL/HW 0.355.

The general appearance is as Monomorium niloticum but with fewer alitrunk hairs. One pair on the pronotum, one on the mesonotum, one on the propodeum, one on the petiole and one on the postpetiole. The main difference is in the sculpture. The whole head is striate including the sides where the striae are continuous from the mandibles to the occiput. Longitudinal striae also reappear on the propodeum but the promesonotum and the first gastral tergite have reticulopunctate sculpture. The back of the head, descending face of the propodeum and the dorsum of the nodes are punctate. The head is comparatively long, almost rectangular and the eyes are large with 16 ommatidia in the longest row.

Type Material

Holotype: worker, Saudi Arabia, Riyadh Agricultural Station, 26.III.1983, C.A. Collingwood.