M. iranicum, a very rare nocturnal species endemic to Iran, has been described by from Central Iran by André Villiers in 1961 [☆]. Although larvae of this species are very likely to be polyphagous on roots of various woody plants, the species has got very strict habitat requirements. Males can occasionally be attracted to light. Females do not fly or come to light and consequently are very difficult to find. They oviposit into the soil [✯].

Body length:	18 - 28 mm
Life cycle:	unknown
Adults in:	June - September
Host plant:	unknown
Distribution:	a species endemic to Iran

Collected by Lech Kruszelnicki and Martin Rejzek in Iran.

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[☆]
Villiers A.:
Sur le genre Monocladum Pic (Cerambycidae Prioninae Prionini).
Bulletin de l'Institut Français d'Afrique Noire 23 série A (2): 445-451, 1961.

[✯]
Lorenc J. and Drumont A.:
Contribution to the knowledge of the bionomics of some steppe Westpalaearctic species belonging to tribe Prionini Latreille, 1802, with the description for the first time of the females of Polylobarthron margelanicum (Théry, 1896) and Mesoprionus petrovitzi (Holzschuh, 1981) (Coleoptera, Cerambycidae, Prioninae).
Les Cahiers Magellanes 11: 82-90, 2013. [download ]