Monomorium subdenticorne

One collection was made near a river in a valley.

Identification
Collingwood and Agosti (1996) - In general appearance this species resembles Monomorium nitidiventre apart from the dentiform propodeum and duller colour and is lighter in colour and has a broader head than Monomorium subdentatum from Zaire.

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

Nomenclature

 * . Monomorium subdenticorne Collingwood & Agosti, 1996: 354, fig. 27 (w.) YEMEN.
 * Type-material: holotype worker, paratype workers (number not stated).
 * Type-locality: holotype Yemen: Al-Mahwit, 21.ix.1991 (A. van Harten); paratypes: workers with same data, workers Yemen: Taiz-Mafhaq, 15.iii.1993 (C.A. Collingwood), workers Yemen: Wadi Bani, 20.iii.1993 (C.A. Collingwood), workers Yemen: Mabar, iv.1993 (M. Knapp).
 * Type-depository: unknown (possibly in WMLC).
 * Status as species: Borowiec, L. 2014: 126.
 * Distribution: Yemen.

Worker
Holotype: TL 3.6; HL 0.82; HW 0.71; SL 0.75; EL/HW 0.216; CI 88; SI 106.

The clypeus is broadly emarginate, the head emarginate with distinct occipital corners and broadly curved sides. The mesopropodeal break is short but deep. The propodeal dorsum is long and flat but raised posteriorly and angled so as to form two blunt, slightly projected dentiform bosses. The propodeal furrow is both broad and deep. There are no dorsal alitrunk hairs, one pair on the petiole, one on the postpetiole and two pairs on the first gastral tergite anterior to the apical row. There are also short suberect pubescent hairs on the mesopropodeum and gaster. The head, alitrunk and nodes have dense reticulopunctate sculpture; the gaster is shining with superficial reticulate sculpture. The head, alitrunk and nodes are pale brownish red contrasting with the dark gaster.

Type Material
Holotype: worker,Yemen, Al-Mahwit, 21.IX.1991, A. van Harten. - Paratypes: Yemen: workers, same series as holotype; workers from: Taiz - Mafhaq, 15.III.1993; Wadi Bani, 20.III.1993; all C.A. Collingwood; workers, Mabar, I.V.1993, M. Knapp.

References based on Global Ant Biodiversity Informatics

 * Collingwood, C. A., and Donat Agosti. "Formicidae (Insecta: Hymenoptera) of Saudi Arabia (Part 2)." Fauna of Saudi Arabia 15 (1996): 300-385.