Information: Bolbaffroides dhofarensis, new species, from Dhofar Governorate in south-western Oman is described. Relevant diagnostic characters (e.g., head and pronotum shape) of the new species and type material of two morphologically similar species, B. rollii (J. Müller, 1941) and B. validus (Klug, 1843) are photographically documented.
Bolbaffroides Nikolajev, 1979 belongs to the less numerous genera of the family Bolboceratidae. Until recently, this genus included only seven taxa on the species level, distributed in the Saharo-Sindian region and adjacent semiarid regions in eastern Africa.
Body. Remarkably convex, surface dark brown, shiny.
Body length: 18 - 22 mm
Peak activity: July - September
Remarks: So far known only from several localities near the coast west of Salalah, at an altitude of about 47–786 m a. s. l. in the Dhofar Governorate, Oman. Collecting events: Part of the type material was caught at a light source in semi-arid areas covered only with sparse shrubs.
The active season is only during the rainy season, which is brought to the area by the monsoon called Khareef.
Distribution: Oman
Zoogeographic region: Afrotropical
Taxonomic classification:
Material examined (& observation):
Sultanate of Oman 
Dhofar prov.
Jabal al Qamar
wadi W of Al Mughsayl
(GPS) [16°50'41"N 53°41'10"E] 
Altitude ~400m a.s.l. | 20-31.8.2012
♂ 1x Holotype & ♀ 1x Allotype | lgt. Pavel Kučera
Our observation period: August ~ October 
Sampling Methods: Attracted to light trap 
Bolbaffroides spp., type labels. B. dhofarensis Král, Hillert, Mencl & Sommer, new species, holotype & allotype.
Collection: NMPC - National Museum, Praha, Czech Repubic
Oman
