Abstract
Monomorium kondratieffi sp. n. is described and illustrated from Saudi Arabia based on the worker caste collected in Al Baha Province. It belongs to the Monomorium hildebrandti-group, which is recorded for the first time from the Arabian Peninsula. Monomorium kondratieffi is distinguished from the latter specis by the body length and mesosomal length, and the distinct obtuse angle (ca 130) between the propodeal dorsum and declivity. The two specimens of Monomorium kondratieffi n. sp. were collected in loose soil; among roots of small Portulaca oleracea L. beneath a Phoenix dactylifera L. tree. A key to the Afrotropical species of the Monomorium hildebrandti-group including the Egyptian endemic species M. dentatum Sharaf is provided.