Genus: Stenoheriades Tkalců, 1984
Common name: none
Stenoheriades contains 11 described species and 6 undescribed species worldwide; none are known to occur in the U.S. or Canada (Michener 2007; Müller and Trunz 2014; Griswold 2018;). Despite the small number of species, Stenoheriades is very diverse in form; there are four species groups that are as distinct as subgenera in other osmiine genera (Griswold 1985).
(modified from Michener 2007)
Stenoheriades may be confused with Heriades due to a similar elongate build and coloration. However, Stenoheriades males lack the dentate preapical ridge on T6, and T7 is not visible. Female Stenoheriades have a shorter proboscis, which is not produced beyond the fossa (Michener 2007).
There are no known invasives.
Stenoheriades appear to exhibit varying levels of host specialization on Asteraceae (Müller and Trunz 2014). Some species are narrowly specialized on Anthemis, such as S. asiatica and S. coelostoma, whereas others (S. eingeddicus) visit Aster (Müller and Trunz 2014). Some species appear to be less specialized, such as S. marocanna which more broadly visits Cichoriodea (Müller and Trunz 2014).
Stenoheriades are widespread in the Afrotropical and western Palearctic regions (Michener 2007). Although rare, their range is broad, encompassing southern Europe in southern Spain and Sicily, southeastern Europe in Bulgaria and Croatia, Turkey, the Arabian Peninsula, Morocco, sub-Saharan Africa to South Africa, and Madagascar (Michener 2007). One species is known to have a disjunct distribution and is found in southern India (Griswold 2018). Six undescribed species occur in the Afrotropical region (Michener 2007).