Synnevrus arabicus (Gadallah & Edmardash, 2023), comb. nov. (Fig, 21, 36). Nysson arabicus Gadallah and Edmardash in Abu el-Ghiet, Gadallah, Gasib, Al-Fifi, and Edmardash, 2023:155, ♂. Holotype: ♂, Saudi Arabia: Sala Mountain: Abdul Rahman Al Jabri farm at 17°04'10.5''N 43°07'43.3''E (Efflatoun Bey collection, Entomology Department, Cairo University, Giza, Egypt (depository not given in the original description, taken from Pulawski, 2025). Remark: The species was described in Nysson, but belongs clearly to Synnevrus, which is restored from synonymy here. See introduction for details. Recognition: The male of Synnevrus arabicus can be recognized by the key characters, mainly by the colour pattern. It is the only Arabian species of the genus with a black mesosoma (with some red only) and with yellow spots or bands on T1-5. Distribution: Only known from the type area in the Jazan Province in Saudi Arabia (Fig. 36).

Published as part of Schmid-Egger, Christian & Al-Jahdhami, Ali A., 2025, Nyssonini of the Arabian Peninsula with description of six new species (Hymenoptera, Spheciformes, Bembicidae), pp. 247-259 in Zootaxa 5696 (2) on page 255, DOI: 10.11646/zootaxa.5696.2.4, http://zenodo.org/record/17324888