Strongylophthalmyia ustulata (Zetterstedt, 1847)

(Figs 21–25, 29, 33)

Chyliza ustulata Zetterstedt, 1847: 2427 (protologue). Syntypes (♂ ♀): Sweden, various localities, MZLU .

Chyliza filata Zetterstedt, 1847: 2428 (protologue). Syntype (s): Sweden, Östergötland, MZLU. Synonymized by Becker in Becker et al. (1905: 163).

Strongylophthalmus ustulatus: Hendel (1902: 181) (new combination, distribution, figure).

Strongylophthalmyia ustulata: Heller (1902: 226) (nomenclature). For references on the morphology, biology and distribution of the species see Palaczyk et al. (2013), Evenhuis (2016) and Krivosheina (2021).

Material examined. CHINA: 1♂, Hebei, Chengde, Wulingshan, Shibatan, 12 Jun. 2019, Ding Yang leg. (CAU) .

Diagnosis. Generally shining black (Fig. 21); antennal arista dark brown (Fig. 29); wing slightly infumate, with indistinct dark suffusion at apex (Fig. 33); legs mostly yellow, with hind femur narrowly dark brown subapically; phallapodeme thin, nearly straight (Fig. 25); distiphallus long, about 1.92 times as long as phallapodeme, with sclerotized apical “glans” (Figs 24, 25).

Distribution. China (Hebei) [new record]. Widely distributed in the Palearctic Region, including Japan, North Korea, Russia and the following European countries: Andorra, Austria, Czech Republic, Estonia, Finland, Germany, Hungary, Latvia, Netherlands, Norway, Poland, Romania, Slovakia, Sweden, Switzerland, Ukraine and United Kingdom (Iwasa 1995; Palaczyk et al. 2013; Roháček 2016; Bree 2017).

Remarks. This is the type species of the genus Strongylophthalmyia, and its morphology (including adult and immature stages), biology and distribution have been well-documented in several works (e.g., Rotheray & Robertson 1998; Palaczyk et al. 2013; Evenhuis 2016; Krivosheina 2021). Here we add a new record of this species in northern China, and provide illustrations of habitus (Fig. 21), antenna (Fig. 29), wing (Fig. 33) and male genitalia (Figs 22–25) to help recognize this species.