Pipiza luteibarba Vujić, Radenković & Polić, 2008

Prokhorov, A. V., Popov, G. V., Shparyk, V. Yu. & Vasilyeva, Yu. S., 2023, New Records Of Hoverflies (Diptera, Syrphidae) From Ukraine. Vi, Zoodiversity 57 (2), pp. 125-142 : 131-132

Pipiza luteibarba Vujić, Radenković & Polić, 2008 ( figs 29–34 )

M a t e r i a l e x a m i n e d. Ukraine. Chernivtsi Region: Grushivtsi env., 48.594196 N 26.786242 E, edge of oak forest, 4.05.2008, 1 Ơ (N. Lishchuk) .

D i s t r i b u t i o n. Austria, Czechia, Greece (Samos), Serbia ( Vujić et al., 2008; Vujić et al., 2013; Speight, 2020; Vujić & Milić, 2021; Wakkie, 2021); Ukraine (first record).

This European localized endemic is regarded as endangered at the global and European level (Vujić & Milić, 2021).

D i a g n o s i s. Species of the Pipiza luteitarsis group to which P. luteibarba belongs are characterized by lacking a pair of ventral longitudinal ridges at the distal end of hind femora (in other Palaearctic Pipiza species, distal end of hind femora ventrally with a pair of distinct, longitudinal ridges) and ventral part of the postpedicel reddish (in other Pipiza species, postpedicel dark). In the male genitalia, lower gonocercus of hypandrium is very short, about 1/3 length of theca (in other Pipiza species, hypandrium always has long lower gonocercus, in lateral view it is about 3/4 length of theca) ( Vujić et al., 2008; Vujić et al., 2013). The other known European species of the Pipiza luteitarsus group are P. accola , P. luteitarsis , and P. quadrimaculata .

The male of Pipiza luteibarba differs from P. quadrimaculata (Panzer, 1802) male by antennae inserted in upper half of the head (lateral view) (in P. quadrimaculata , antennae inserted just below middle of the head) and abdomen elongated (in P. quadrimaculata , abdomen broadly ovoid). From the most similar P. accola Violovitsh, 1985 and P. luteitarsis Zetterstedt, 1843 , P. luteibarba can be distinguished by face with pale pile ( figs 31–33 ) (in other species, face predominantly with black pile; however, we have some specimens of P. accola in which face predominantly with pale pile); postpedicel elongated, almost 1.5 times longer than wide ( figs 32–33 ) (in other species, postpedicel short, oval, wider than long); tarsi yellow, only metatarsus of hind legs darkened ( figs 29, 33 ) (in other species, tarsi of all legs partly darkened or at least of middle and hind legs); tergite 2 with long hairs that stick out (in other species, tergite 2 without long hairs sticking out); basal part of surstylus with well-developed semicircular lobe (in other species, basal part of surstylus with reduced ( P. luteitarsis ) or with small basal semicircular lobe, as in P. accola ). The genitalia of P. luteibarba have been prepared and compared with figures in Vujić et al. (2013).

Figures

Figs 29–34. Pipiza luteibarba male: 29 — habitus, dorsal view; 30 — head, dorsal view; 31 — head, frontal view; 32 — head, anterolateral view; 33 — habitus, lateral view; 34 — right hind leg, dorsal view.