Cerodontha (Poemyza) muscina (Meigen, 1830)

Figs 16 A – N, 17 A – K

Agromyza muscina Meigen, 1830: 177.

Agromyza marginata Loew, 1869: 49. Frick 1957: 202.

Dizygomyza (Poëmyza) muscina: Hendel 1931–1936: 44.

Phytobia (Poëmyza) muscina: Frick 1952: 392, 1957: 202.

Cerodontha (Poemyza) muscina: Nowakowski 1967: 649, 1973: 104; Spencer 1969: 132; Soós and Papp 1984: 289; Spencer and Steyskal 1986: 93; Scheffer et al. 2007: 771; Guglya 2021: 39; Lonsdale 2021: 296; Černý et al. 2022: 417.

Cerodontha muscina: Boucher and Wheeler 2001: 614.

Specimens examined.

China, Inner Mongolia, Genhe City, Mangui Town, the northern primitive forest region of Greater Khingan Mountains: • 4 ♂♂ (IMAU), Wulonggan forestry center near impounding reservoir, unburned area, Pinus sylvestris var. mongholica, malaise trap 20 (one meter above the ground), 52°47'47.98"N, 120°55'03.45"E, 816 m, 13. VII. 2022, leg. Li Shi, Zhi-Wei Wang, Rui Ma ; • 1 ♀ (IMAU), Changliangbeishan houdu, burned area in 2002, Pinus sylvestris var. mongholica, malaise trap 4 (one meter above the ground), 52°25'31.24"N, 120°54'40.10"E, 1009 m, 28. VII. 2022, leg. Rui Ma, Qin-Jianrong Liu ; • 1 ♂ (IMAU), Aba River Third Branch Line, unburned area, Pinus sylvestris var. mongholica, malaise trap 33 (three meters above the ground), 52°22'00.00"N, 121°27'07.00"E, 659 m, 28. VII. 2022, leg. Rui Ma, Qin-Jianrong Liu ; • 1 ♀ (IMAU), Changliangbeishan at 4268 meters, unburned area, Larix gmelinii, malaise trap 7 (three meters above the ground), 52°29'15.18"N, 120°02'24.80"E, 920 m, 09. VII. 2022, leg. Rui Ma, Qin-Jianrong Liu ; • 1 ♂ 1 ♀ (IMAU), Aba River Third Branch Line, unburned area, Larix gmelinii, malaise trap 30 (one meter above the ground), 52°18'40.00"N, 121°22'48.60"E, 629 m, 28. VII. 2022, leg. Rui Ma, Qin-Jianrong Liu ; • 1 ♂ 1 ♀ (IMAU), Aba River Third Branch Line, burned area in 2018, Larix gmelinii, malaise trap 32, 52°19'57.70"N, 121°25'38.40"E, 651 m, 28. VII. 2022, leg. Rui Ma, Qin-Jianrong Liu ; • 1 ♂ (IMAU), Aba River Third Branch Line, burned area in 2018, Pinus sylvestris var. mongholica, malaise trap 35 (three meters above the ground), 52°21'07.00"N, 121°27'05.30"E, 643.3 m, 14. VII. 2022, leg. Li Shi, Zhi-Wei Wang, Rui Ma . DNA sequence number PX 102344 from GenBank.

Diagnosis.

Male (Fig. 16 A – N). Body length 1.7–2.0 mm; wing length 1.7–2.1 mm. Female (Fig. 17 A – K). Body length 1.9–2.1 mm; wing length 1.8–2.1 mm (Lonsdale 2021: male wing length 1.7–2.5 mm, female wing length 1.4–2.3 mm). Frons mostly yellow with black transverse line at middle. Fronto-orbital plate yellow, ~ 1 / 2 width of frons, and orbital setae surrounded by a brown circle (Fig. 16 C). Two ori inclinate and two ors reclinate. Lunule dark brown, higher than wide. Mesonotum with 0-1 + 3 dc, anteriormost postsutural dc close to suture; acr in six rows (Fig. 16 E). Legs dark brown, all femora yellow at distal 1 / 3–1 / 2. Wing with ultimate and penultimate sections of M 4 in proportion of 1.1: 1. Male genitalia (Fig. 16 G – N): distiphallus (Fig. 16 H, K) with tubules short, mightily contorted to right, relatively dilated at apex. Female terminalia (Fig. 17 G – K): spermathecae (Fig. 17 I) with semicircular and rough-surfaced on apical half, and subconical and slightly curved on basal half.

Distribution.

Palaearctic: Andorra, Austria (Soós and Papp 1984), Belarus, Belgium, Bulgaria (Černý et al. 2022), China (Inner Mongolia) #, Czech Republic, Denmark, Estonia, Finland, France (Soós and Papp 1984), Germany, Greece, Hungary, Italy, Kyrgyzstan, Latvia, Lithuania, Netherlands, Norway, Poland, Portugal (Černý et al. 2018), Russia, Slovakia, South Korea, Spain, Sweden, Switzerland, The United Kingdom, Turkey (Dursun et al. 2015), Ukraine (Guglya 2021), The Former Yugoslavia (Soós and Papp 1984); Nearctic: Canada, USA (Lonsdale 2021); Afrotropical: Madagascar (https://www.gbif.org/species/1552471).

Remarks.

For more information about this species, refer to Lonsdale (2021) and Guglya (2021).