Medetera glauca Loew, 1869

Kejval, Zbyněk & Pollet, Marc, 2023, The genus Medetera (Diptera: Dolichopodidae) in the Czech Republic with first records of twelve species, Zootaxa 5254 (1), pp. 69-93 : 78-79

Medetera glauca Loew, 1869

Distribution. Austria, Bulgaria, Czech Republic (?), France, Germany, Poland, Slovakia, Sweden and Switzerland. Meuffels (1974) recorded M. glauca from the Netherlands, which proved incorrect ( Meuffels et al. 2022).

Status in CZ. Previously recorded only from Moravia: Valtice ( Olejníček 1998) and Liščí skála ( Olejníček et al. 2005). There are two relevant specimens deposited in NMPC: one female from Valtice (2.vi.1977, Olejníček lgt.) and one male from Liščí skála (27.v.–26.vi.2001, M. Barták & Š. Kubík lgt.). The identity of the former is not clear, and the latter belongs to M. infumata . Consequently, the occurrence of M. glauca in the Czech Republic is not supported by confirmed identifications (see also Remarks).

Remarks. Loew(1869) described Medetera glauca from an unstated number of specimens from Austria (“Kärnthen”). The type series is deposited in ZMHB and is entirely composed of female specimens (J. Pohl, pers. comm.), which is rather problematic for the verification of their identity. Despite numerous records, M. glauca remains poorly known and its male characters have never been described. There is only a short note by Naglis & Negrobov (2014), based on the specimens from Switzerland, that male genitalia are very similar to those of M. bisecta Negrobov, 1967 , and also that the ad/pd setae of the mesotibiae are very small, pale and scarsely visible in this species. Remarkably, also M. unisetosa Collin, 1941 resembles M. bisecta in male characters and displays a similar reduction of mesotibial setae (recorded below).