taxonID	type	description	language	source
039C3F795C27FFF184DDFF589920FCF4.taxon	type_taxon	Type species, Cordylura breviseta Zetterstedt (original designation).	en	Han, Sangjin, Shin, Seunggwan (2025): First records of the genus Acerocnema Becker (Diptera: Scathophagidae) from South Korea, with a new species and a newly recorded species using DNA barcodes. Zootaxa 5653 (3): 440-450, DOI: 10.11646/zootaxa.5653.3.9, URL: https://doi.org/10.11646/zootaxa.5653.3.9
039C3F795C27FFF184DDFF589920FCF4.taxon	diagnosis	Diagnosis. Small-bodied flies around 3.0 – 6.0 mm in length; arista bare or short pubescent, not exceeding the maximum length of the postpedicel in male; palpus basally slender and spatula-shaped apically, without strong apical or subapical seta; proboscis slender with reduced labella; setae whitish yellow or black on head and body; thorax yellow to black and shiny, covered with microtrichia; proepisternum covered with setulae at middle or in anterior part; anepisternum covered with setulae along dorsal margin and on posterior part only, without setulae posterior to anterior spiracle; katepisternum with one strong seta on posterodorsal corner; scutellum with strong setae; vein R 1 usually bare or with setulae on apical portion; CuA + CuP not reaching wing margin; legs slender without black or strong setae; abdomen with fine setae over surface; male sternite V usually strongly bilobate posteriorly, surstylus slender and flattened with various shapes, sometimes enlarged apically; cerci well developed and divided with multiple sections; female abdomen segments beyond VI compressed; ovipositor short, strongly sclerotized.	en	Han, Sangjin, Shin, Seunggwan (2025): First records of the genus Acerocnema Becker (Diptera: Scathophagidae) from South Korea, with a new species and a newly recorded species using DNA barcodes. Zootaxa 5653 (3): 440-450, DOI: 10.11646/zootaxa.5653.3.9, URL: https://doi.org/10.11646/zootaxa.5653.3.9
039C3F795C27FFF784DDFCD09EF2F854.taxon	description	(Figs 1 C, F, H; 2 E – H)	en	Han, Sangjin, Shin, Seunggwan (2025): First records of the genus Acerocnema Becker (Diptera: Scathophagidae) from South Korea, with a new species and a newly recorded species using DNA barcodes. Zootaxa 5653 (3): 440-450, DOI: 10.11646/zootaxa.5653.3.9, URL: https://doi.org/10.11646/zootaxa.5653.3.9
039C3F795C27FFF784DDFCD09EF2F854.taxon	diagnosis	Diagnosis. This species can be distinguished from congeneric species by the following characters: yellow gena and postgena, well-developed vibrissal angle, black postpedicel, yellow palpus, thorax with microtrichia, scutum with partially large shiny spots between pre- and postsutural dorsocentral and supra-alar lines, yellow legs, male sternite 5 strongly bilobate, very slightly enlarged apically, lobes yellowish white, with whitish setulae over surface but more abundant along inner margin of lobes, and surstylus long and slender not enlarged apically.	en	Han, Sangjin, Shin, Seunggwan (2025): First records of the genus Acerocnema Becker (Diptera: Scathophagidae) from South Korea, with a new species and a newly recorded species using DNA barcodes. Zootaxa 5653 (3): 440-450, DOI: 10.11646/zootaxa.5653.3.9, URL: https://doi.org/10.11646/zootaxa.5653.3.9
039C3F795C27FFF784DDFCD09EF2F854.taxon	description	Redescription. Male. Face and parafacial yellow; gena and postgena yellow with yellowish white setulae, genal width about one third of vertical diameter of eye. Frontal vitta matt, orangish yellow transitioning to black toward ocellar triangle, pale yellow apically. Fronto-orbital plate and ocellar triangle shiny black; occiput shiny black with yellowish white setulae. Fronto-orbital plate with 3 – 4 inclinate frontal setae, 3 proclinate orbital setae, 1 pair of proclinate orbital setae, 1 pair of short divergent postocellar setae, 1 long stout inner vertical seta and outer vertical seta absent, as long as postocular setae. Well-developed vibrissal angle with 1 strong vibrissa with 2 short supravibrissal setae and 1 strong subvibrissal setae, all yellow. Antenna with postpedicel black, apically rounded, covered with very fine microtrichia, approximately as long as length of arista; scape and pedicel blackish brown; arista yellow on basal half, black and thinner on apical half, short pubescent apically. Palpus yellow, long, spatulate in ventral view with white hairs over surface; proboscis slender, somewhat stout on basal part, with reduced labella with whitish yellow setulae. Thorax (Fig. 1 F). Black with an overall shiny surface, but largely obscured by white microtrichia and all setae yellowish white; scutum covered with white microtrichia and white setulae, partially with two pairs of large shiny spots between pre- and postsutural dorsocentral and supra-alar lines (Fig. 1 H); acrostichal setae in 2 – 4 rows, shorter and finer than dorsocentrals; 1 – 2 presutural and 3 postsutural dorsocentral setae; 2 postpronotal seta; 0 presutural intra-alar setae; 1 presutural supra-alar; 2 notopleural setae; 0 postsutural intra-alar setae; 2 postsutural supra-alar setae; 2 postalar seta; 1 pair of strong basal scutellar setae and 1 pair of convergent strong apical scutellar setae. Anterior margin of presutural dorsocentral lines with 3 erect white setulae. Pleura shiny black, covered with microtrichia except half of dorsal and posterior parts of anepisternum and anepimeron. Proepisternum with 2 whitish yellow proepisternal setae, covered with setulae. Proepimeron with 1 long seta. Anepisternum covered with setulae in posterior half, with 2 long posterior setae. Katepisternum with one strong posterodorsal seta and setulae ventrally. Anepimeron bare. Wing. Clear, R 1 bare apically on dorsal surface. Calypters whitish with yellowish fine marginal. Halter yellowish. Legs. Entirely setose. Fore and mid coxae yellow, hind coxae brownish black; femora yellow; tibiae yellow; tarsi yellow, darkened apically from hind tarsomere 3. Setae pale yellow but black on tarsi. Fore femur with dense dorsal hairs. Fore tibia with 1 apical dorsal seta, 1 apical anterodorsal seta, 1 anterodorsal seta on apical 1 / 2. Mid tibia with 2 anterodorsal setae on apical 1 / 3 and 2 / 3, 1 preapical dorsal seta, 1 anteroventral seta on apical 1 / 3, 1 apical anteroventral seta, 1 apical posterodorsal seta, 1 apical anteroventral seta, 1 apical posterior seta, 1 apical posterodorsal seta. Hind tibia with longer hairs than fore and mid tibiae, difficult to differentiate setae from hairs, with row of 5 – 6 anterodorsal setae, a row of 6 – 7 posterodorsal setae, 1 subapical dorsal seta, 1 anterodorsal apical seta. Abdomen. Shiny black covered with pale setulae over surface. Abdominal sternites shiny black. Sternite 5 strongly bilobate (Fig. 2 E), rounded and very slightly expanded apically; lobes yellowish white, with whitish setulae over surface, more abundant along inner margin of lobes. Terminalia (Fig. 2 F – H). Epandrium shiny black, with long dense setae. Surstylus pale yellow, slender, parallel-sided, not enlarged apically; blackish apically, with setulae and long scattered setae along inner margin, with blackish sclerotized pointy structure on basal part in posterior view. Cercus pale yellow, comprising two sclerotized sections; dorsal section blackish and somewhat parallelogrammatic in posterior view, with long dense stout setae over surface; ventral section long and tweezer-shaped in posterior view, broad in middle and narrower apically in lateral view, with dense setulae from middle to subapical inner surface and black at apex. Pregonite as wide as postgonite in lateral view, severely crooked ventroapically, dense hairs over surface from beginning of bend. Postgonite long and slender, bare and slightly spatulate apically. Epiphallus as slim and long as pregonite. Phallapodeme enlarged, somewhat arched and round ventrally, not digitiform. Hypandrium distinctively arched ventroapically, much thicker and stouter than that of A. saurischia sp. nov.	en	Han, Sangjin, Shin, Seunggwan (2025): First records of the genus Acerocnema Becker (Diptera: Scathophagidae) from South Korea, with a new species and a newly recorded species using DNA barcodes. Zootaxa 5653 (3): 440-450, DOI: 10.11646/zootaxa.5653.3.9, URL: https://doi.org/10.11646/zootaxa.5653.3.9
039C3F795C27FFF784DDFCD09EF2F854.taxon	materials_examined	Material examined (1 ♂). Republic of KOREA: [GW] 1 ♂, Gangwon-do, Yongdae National Recreational Forest, Buk-myeon, Inje-gun, 38 ° 14 ’ 27.2 ” N 128 ° 20 ’ 11.5 ” E, malaise 22. IV – 23. III. 2023, Han S., Shin S., SNUE 02400 (SNUE).	en	Han, Sangjin, Shin, Seunggwan (2025): First records of the genus Acerocnema Becker (Diptera: Scathophagidae) from South Korea, with a new species and a newly recorded species using DNA barcodes. Zootaxa 5653 (3): 440-450, DOI: 10.11646/zootaxa.5653.3.9, URL: https://doi.org/10.11646/zootaxa.5653.3.9
039C3F795C27FFF784DDFCD09EF2F854.taxon	distribution	Distribution. Republic of Korea (new record), Japan (Hokkaido).	en	Han, Sangjin, Shin, Seunggwan (2025): First records of the genus Acerocnema Becker (Diptera: Scathophagidae) from South Korea, with a new species and a newly recorded species using DNA barcodes. Zootaxa 5653 (3): 440-450, DOI: 10.11646/zootaxa.5653.3.9, URL: https://doi.org/10.11646/zootaxa.5653.3.9
039C3F795C27FFF784DDFCD09EF2F854.taxon	biology_ecology	Ecology. Adults have been collected from a flower community of Corydalis ambigua in early spring (Iwasa 2014).	en	Han, Sangjin, Shin, Seunggwan (2025): First records of the genus Acerocnema Becker (Diptera: Scathophagidae) from South Korea, with a new species and a newly recorded species using DNA barcodes. Zootaxa 5653 (3): 440-450, DOI: 10.11646/zootaxa.5653.3.9, URL: https://doi.org/10.11646/zootaxa.5653.3.9
039C3F795C27FFF784DDFCD09EF2F854.taxon	discussion	Remarks. There are inconsistencies in the publication year of A. flavifrons across several papers (Chagnon & Sinclair 2021; Ozerov 2018; Iwasa 2021; Bernasconi & Šifner 2021), where the year is cited as either 2013 or 2014. Although the original description was intended for publication in 2013, the second issue of Vol. 20 was not printed until 24 September 2014 (stated at the end of the article on page 183). We have confirmed with Dr. M. Iwasa that the actual publication date was 2014. Thus, the correct publication year is 2014, as the actual year of publication takes and therefore, the correct citation is A. flavifrons Iwasa, 2014. In the original description, A. flavifrons is noted as having black frontal and orbital setae, as well as black outer vertical setae. However, the examined specimen in this study has yellow frontal and orbital setae and lacks outer vertical setae, in contrast to the original description. Given that both this study and the original description are based on a single male specimen, further specimens are required to assess whether these differences represent intraspecific variation or potential taxonomic significance.	en	Han, Sangjin, Shin, Seunggwan (2025): First records of the genus Acerocnema Becker (Diptera: Scathophagidae) from South Korea, with a new species and a newly recorded species using DNA barcodes. Zootaxa 5653 (3): 440-450, DOI: 10.11646/zootaxa.5653.3.9, URL: https://doi.org/10.11646/zootaxa.5653.3.9
039C3F795C20FFF484DDFF109DA9FE78.taxon	description	(Figs 1 A – B, D – E, G; 2 A – D; 3)	en	Han, Sangjin, Shin, Seunggwan (2025): First records of the genus Acerocnema Becker (Diptera: Scathophagidae) from South Korea, with a new species and a newly recorded species using DNA barcodes. Zootaxa 5653 (3): 440-450, DOI: 10.11646/zootaxa.5653.3.9, URL: https://doi.org/10.11646/zootaxa.5653.3.9
039C3F795C20FFF484DDFF109DA9FE78.taxon	materials_examined	Type material examined. HOLOTYPE ♂ Republic of Korea: [GG]: Gyeonggi-do, Mt. Taehwasan, Docheokmyeon, 37 ° 18 ’ 43.3 ” N 127 ° 18 ’ 33.2 ” E, malaise 20. IV – 22. III. 2023, Han S., Shin S., SNUE 02361 (SNUE). PARATYPES (1 ♂, 34 ♀♀), 1 ♂, [GW]: Gangwon-do, Mt. Chiaksan, Panbu-myeon, Wonju-si, 37 ° 15 ’ 03.6 ” N 128 ° 01 ’ 39.6 ” E, malaise 14. V – 30. III. 2022, Han S., Shin S., SNUE 00760 (SNUE), 7 ♀♀, ditto as holotype SNUE 02360, SNUE 02362, SNUE 02363, SNUE 02364, SNUE 02365, SNUE 02366, SNUE 02367 (SNUE), 2 ♀♀, ditto but 31. V – 20. IV. 2023, SNUE 02357, SNUE 02358 (SNUE), 1 ♀, ditto but 10. V – 30. III. 2022, SNUE 01554 (SNUE), 4 ♀♀, ditto but 15. IV – 2. IV. 2021, SNUE 00041, SNUE 00747, SNUE 00748, SNUE 00749 (SNUE, but SNUE 00749 deposited in HNIBR), 1 ♀, [GW]: Gangwon-do, Yongdae Natural Recreational Forest, Buk-myeon, Inje-gun, 38 ° 14 ’ 27.2 ” N 128 ° 20 ’ 11.5 ” E, malaise 22. IV – 23. III. 2023, Han S., Shin S., SNUE 02401 (SNUE), 19 ♀♀, ditto as holotype but 18 – 4. IV. 2024, SNUE 02860, SNUE 02861, SNUE 02862, SNUE 02863, SNUE 02864, SNUE 02865, SNUE 02866, SNUE 02867, SNUE 02868, SNUE 02869, SNUE 02870, SNUE 02871, SNUE 02872, SNUE 02873, SNUE 02874, SNUE 02875, SNUE 02876, SNUE 02877, SNUE 02878 (SNUE).	en	Han, Sangjin, Shin, Seunggwan (2025): First records of the genus Acerocnema Becker (Diptera: Scathophagidae) from South Korea, with a new species and a newly recorded species using DNA barcodes. Zootaxa 5653 (3): 440-450, DOI: 10.11646/zootaxa.5653.3.9, URL: https://doi.org/10.11646/zootaxa.5653.3.9
039C3F795C20FFF484DDFF109DA9FE78.taxon	diagnosis	Diagnosis. This species can be distinguished from congeneric species by the following characters: yellow gena and postgena, well-developed vibrissal angle, black postpedicel, yellow palpus, thorax with microtrichia, scutum with small shiny spots on both pre- and postsutural intra-alar lines, vein R 1 without dorsal setulae, yellow legs, and male surstylus extended and enlarged apically.	en	Han, Sangjin, Shin, Seunggwan (2025): First records of the genus Acerocnema Becker (Diptera: Scathophagidae) from South Korea, with a new species and a newly recorded species using DNA barcodes. Zootaxa 5653 (3): 440-450, DOI: 10.11646/zootaxa.5653.3.9, URL: https://doi.org/10.11646/zootaxa.5653.3.9
039C3F795C20FFF484DDFF109DA9FE78.taxon	description	Description. Male. Body primary color shiny black; pleura shiny black; scutum shiny black; entire body pruinose except for scutellum and abdomen (Fig. 1 A – B, D – E). All setae yellowish white. Head. Face and parafacial yellow transitioning to black toward apex; gena and postgena yellow with yellowish white setulae, genal width about one third of vertical diameter of eye. Frontal vitta matt, orangish yellow, yellowish white apically. Fronto-orbital plate and ocellar triangle shiny black; occiput shiny black with yellowish white setulae. Fronto-orbital plate with 4 – 5 inclinate frontal setae, 3 lateroclinate orbital setae, 1 pair of lateroclinate orbital setae, 1 pair of short divergent postocellar setae, 1 long inclinate inner vertical seta and 1 short lateroclinate outer vertical seta. Well-developed vibrissal angle with 1 strong vibrissa with 2 short supravibrissal setae and 1 strong subvibrissal setae, all yellow. Antenna with postpedicel black, bean-shaped, covered with very fine microtrichia, approximately as long as the length of arista; scape and pedicel blackish brown; arista yellow on basal half and black and thinner on apical half, short pubescent apically. Palpus yellow, long, almost filiform, slender on basal half and slightly dilated on apical half with white hairs over surface; proboscis slender, somewhat stout on the basal part, with reduced labella with whitish yellow setulae. Thorax (Fig. 1 D – E). Black with an overall shiny surface, but largely obscured by white microtrichia and all setae yellowish white; scutum covered with white microtrichia and white setulae, partially with two pairs of small round shiny spots along pre- and postsutural intra-alar lines (Fig. 1 G); acrostichal setae in 2 – 5 rows, shorter and finer than dorsocentrals; 1 – 2 presutural and 3 – 4 postsutural dorsocentral setae; 1 postpronotal seta; 0 presutural intra-alar setae; 1 presutural supra-alar; 2 notopleural setae; 0 postsutural intra-alar setae; 2 postsutural supra-alar setae; 2 postalar seta; 1 pair of strong basal scutellar setae and 1 pair of strong convergent apical scutellar setae. Anterior margin of presutural dorsocentral lines with 3 erect white setulae. Pleura shiny black, covered with microtrichia except dorsal half of anepisternum and anepimeron. Proepisternum with 2 whitish yellow proepisternal setae, covered with setulae. Proepimeron with 1 long seta. Anepisternum covered with setulae in posterior half, with 2 long posterior setae. Katepisternum with one strong posterodorsal seta and setulae ventrally. Anepimeron bare. Thoracic spiracles with short yellow hairs. Wing. Clear, R 1 bare apically on dorsal surface. Calypters whitish with yellowish fine marginal hairs. Halter yellowish. Legs. Entirely setose. Fore and mid coxae yellow, hind coxae brownish black; femora yellow; tibiae yellow; tarsi yellow, darkened apically from hind tarsomere 3. Setae pale yellow but black on tarsi. Fore femur with dense dorsal hairs. Fore tibia with 1 apical dorsal seta, 1 apical anterodorsal seta, 1 – 2 anterodorsal seta on apical 1 / 3. Mid tibia with 1 anterior seta on apical 1 / 5, 1 preapical dorsal seta, 1 apical anterodorsal seta, 1 apical anterodorsal seta, 1 anterodorsal seta on apical 1 / 3, 1 preapical posterior seta. Hind tibia with 1 preapical dorsal seta, 1 anteroventral seta on apical 1 / 4, 1 apical ventral seta, 1 apical anterodorsal seta, 2 anterodorsal seta on apical 2 / 5 and 3 / 5, 1 apical posterodorsal seta, 2 posterodorsal seta on apical 2 / 3 and 1 / 2. Abdomen. Shiny black covered with pale setulae over surface. Abdominal sternite shiny black. Sternite 5 Ushaped (Fig. 2 A), pale yellow, lobes sharply triangular, divergent; lobes with stout, scattered pale white setae over surface. Terminalia (Fig. 2 B – D). Epandrium shiny black, with long dense setae. Surstylus pale yellow, slender, and extended, ladle-shaped on lateral view, prominently enlarged and blackish in apical part, with setulae along inner margin and scattered setae at inner apex. Cercus pale yellow, comprising two sclerotized sections; dorsal section somewhat triangular on posterior view, with dense long, stout setae over surface; ventral section slender, extended in posterior view, broad in middle and narrower apically in lateral view, with dense setulae from apical 1 / 3 to subapical inner surface and black at apex. Pregonite wider than postgonite in lateral view, severely crooked ventroapically, dense hairs over surface from beginning of bend. Postgonite long and slender, bare and slightly crooked ventroapically. Epiphallus slimmer and slightly shorter than pregonite. Phallapodeme enlarged, fan-shaped, not digitiform. Hypandrium slightly arched apically, not thicker and stouter than that of A. flavifrons. Female. Parafacial yellow; postpedicel very slightly slenderer than male; abdominal segments (tergites and sternites) VII to VIII compressed, triangle-shaped in lateral view and sternite VIII strongly sclerotized, indented in the apical tip (Fig. 3).	en	Han, Sangjin, Shin, Seunggwan (2025): First records of the genus Acerocnema Becker (Diptera: Scathophagidae) from South Korea, with a new species and a newly recorded species using DNA barcodes. Zootaxa 5653 (3): 440-450, DOI: 10.11646/zootaxa.5653.3.9, URL: https://doi.org/10.11646/zootaxa.5653.3.9
039C3F795C20FFF484DDFF109DA9FE78.taxon	distribution	Distribution. Republic of Korea (new record)	en	Han, Sangjin, Shin, Seunggwan (2025): First records of the genus Acerocnema Becker (Diptera: Scathophagidae) from South Korea, with a new species and a newly recorded species using DNA barcodes. Zootaxa 5653 (3): 440-450, DOI: 10.11646/zootaxa.5653.3.9, URL: https://doi.org/10.11646/zootaxa.5653.3.9
039C3F795C20FFF484DDFF109DA9FE78.taxon	etymology	Etymology: The species name is derived from the Greek words “ sauros ” (lizard) and “ ischion ” (hip joint), referencing the resemblance of the male terminalia shape, in lateral view, to a saurischian dinosaur hip joint.	en	Han, Sangjin, Shin, Seunggwan (2025): First records of the genus Acerocnema Becker (Diptera: Scathophagidae) from South Korea, with a new species and a newly recorded species using DNA barcodes. Zootaxa 5653 (3): 440-450, DOI: 10.11646/zootaxa.5653.3.9, URL: https://doi.org/10.11646/zootaxa.5653.3.9
039C3F795C20FFF484DDFF109DA9FE78.taxon	discussion	Remarks. This new species is similar to A. kishimotoae Iwasa, but differs by its yellow postgena (dark brown in A. kishimotoae), entirely yellow palpus (apically brown in A. kishimotoae), ladle-shaped surstylus (club-shaped in A. kishimotoae (Iwasa 2014, figs 2 – 3 )). In Ozerov & Krivosheina (2018), A. saurischia sp. nov. keys to A. paradoxopyga Stackelberg, but differs by its shiny scutellum (grey dusted in A. paradoxopyga) and yellow legs (hind femur black, fore and mid femora black at least on basal half in A. paradoxopyga). Bionomics. Adults were collected by Malaise traps surrounded by a flower community of Corydalis from March to April (Fig 4 A – C).	en	Han, Sangjin, Shin, Seunggwan (2025): First records of the genus Acerocnema Becker (Diptera: Scathophagidae) from South Korea, with a new species and a newly recorded species using DNA barcodes. Zootaxa 5653 (3): 440-450, DOI: 10.11646/zootaxa.5653.3.9, URL: https://doi.org/10.11646/zootaxa.5653.3.9
