Monomorium riyadhe

Nothing is known about the biology of .

Distribution based on Regional Taxon Lists
Afrotropical Region: Saudi Arabia.

Nomenclature

 * . 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.

Worker
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.