Macrocera maculosa Matsumura 1915

Lim, Wonseop, Bang, Woo Jun & Shin, Seunggwan, 2025, New records of Macrocera Meigen 1803 (Diptera, Keroplatidae) from the Korean Peninsula with description of a new species, Zootaxa 5665 (2), pp. 239-255 : 247-248

Macrocera maculosa Matsumura 1915

Figs. 7–8 , 9b

Material examined. One male and four females ( SNUE), Yongdae Recreational Forest , Inje-gun, Gangwon-do, South Korea (38°14'33.0"N, 128°20'11.3"E; Fig. 1 ), dry pinned. Collected during July 24 to August 23, 2023, by Woo Jun Bang, Sangjin Han, and Jonghwan Choi using Malaise trap . One male ( SNUE), Odaesan Mountain , Pyeongchang-gun, Gangwon-do, South Korea (37°47'24.0"N, 128°33'52.7"E; Fig. 1 ). Collected during July 12 to August 4, 2022, by Woo Jun Bang, Sangjin Han, and Jonghwan Choi using Malaise trap .

Comments. This species can easily be recognized based on its characteristic wing patterns ( Fig. 8a ), long antennae in male being almost three times the body length ( Fig. 7a ) and stripe-patterned mesonotum ( Fig. 9b ). Matsumura (1915) mentions that this species has a yellow abdomen, but abdominal coloration is rather various between individuals and sexes ( Figs. 7a–b ). Male terminalia of this species have been figured for the first time in the current study ( Figs. 8b–d ). So far, this species was only known from Japan ( Matsumura 1915, Okada 1937, 1938a, 1939a, 1939b).

DNA Sequence. Partial COI gene of a male specimen sequenced (Accession: PV300947).

Figures

FIGURE 1. The map of the sampling localities. Map adopted from Kim (2023).

FIGURE 7. Macrocera maculosa Matsumura 1915 a. Male habitus, lateral view. b. Female habitus, lateral view. Left wings removed in both specimens for photography. (scale bar 1.0 mm)

FIGURE 8. Macrocera maculosa Matsumura 1915 a. Wing, male. (scale bar 1.0mm) b. Male terminalia, dorsal view. c. ventral view. d. dorsal view, tergite 9 removed. (scale bar 100μm)

FIGURE 9. a. Macrocera abdominalis Okada 1937, thorax, male, dorsal view. b. Macrocera maculosa Matsumura 1915, thorax, male, dorsal view (scale bar 1.0 mm)