New data on the larvae of the hover-fl y genus Eumerus Meigen, 1822 (Diptera, Syrphidae)
The information on the ecology and morphology of larvae of 4 species of the genus Eumerus : Eu. arnoldii , Eu. ammophilus , Eu. sogdianus and Eumerus sp., developing in the stems of broomrape (the ﬁrst two species), in the roots of the dorema ( Eu. sogdianus ) and ferula ( Eumerus sp.) is represented for the ﬁrst time. According to morphological characteristics, the larvae of the studied species are divided into two well-distinguished groups. The larvae of Eu. arnoldii are typical representatives of the genus Eumerus . They diﬀer in the presence of conical terminal projections at the end of the ultimate body segment, the absence of sclerotized hook-shaped or conical spines on the body, and anterior spiracles have the shape of small cylindrical tubercles bearing rounded openings at the apex. The larvae of the other three species have a rounded last body segment without conical projections, the body with sclerotized hook-shaped or conical spines, and the anterior spiracles are ﬂat, semicircular, bearing elongate, fan-shaped spiracular openings.