taxonID	type	description	language	source
D47787A29307FFC6FF754EEFFDCAF060.taxon	materials_examined	Type genus: Ommatidiotus Spinola, 1839.	en	Park, Jaekook, Jung, Sunghoon (2024): The genus Ommatidiotus Spinola (Hemiptera: Auchenorrhyncha: Caliscelidae) from the Korean Peninsula and neighboring countries. Zootaxa 5496 (2): 172-190, DOI: 10.11646/zootaxa.5496.2.2, URL: http://dx.doi.org/10.11646/zootaxa.5496.2.2
D47787A29307FFC6FF754FBDFBCDF489.taxon	materials_examined	Type species: Ommatidiotus dissimilis (Fallén, 1806) (= Issus dissimilis Fallén, 1806).	en	Park, Jaekook, Jung, Sunghoon (2024): The genus Ommatidiotus Spinola (Hemiptera: Auchenorrhyncha: Caliscelidae) from the Korean Peninsula and neighboring countries. Zootaxa 5496 (2): 172-190, DOI: 10.11646/zootaxa.5496.2.2, URL: http://dx.doi.org/10.11646/zootaxa.5496.2.2
D47787A29307FFC6FF754FBDFBCDF489.taxon	biology_ecology	Ecology. This genus is known to use acoustic signals for communication with both sexes (O. dissimilis (Fallen) and O. inconspicuous Stål; Tishechkin, 2003: 172, 177). Distributions. This taxon is widely distributed in the Transpalearctic region. See the detailed distributions on the checklist below.	en	Park, Jaekook, Jung, Sunghoon (2024): The genus Ommatidiotus Spinola (Hemiptera: Auchenorrhyncha: Caliscelidae) from the Korean Peninsula and neighboring countries. Zootaxa 5496 (2): 172-190, DOI: 10.11646/zootaxa.5496.2.2, URL: http://dx.doi.org/10.11646/zootaxa.5496.2.2
D47787A29307FFC6FF754FBDFBCDF489.taxon	discussion	Remarks. Redivision of O. karafutonis stat. rev. and O. nigritus. These two species were established in the same protologue (Matsumura, 1911), Anufriev & Emeljanov (1988) considered O. karafutonis to be a junior synonym of O. nigritus. The type series in SEHU (Figs 4 A – E; 9 A – E) shows that these two species are distinct due to their coloration (O. karafutonis: brown: O. nigritus: black) and body size (O. karafutonis: 4.66 - 4.77 mm; O. nigritus: 4.58 mm; ‘ O. nigritus is similar in shape to O. karafutonis M., but slightly narrower. ’) (Matsumura, 1911). Thus, we considered O. karafutonis stat. rev. and O. nigritus as respective species, and revived the species status. Presence of O. nigritus in the Korean Peninsula. The taxonomic issues of O. karafutonis stat. rev. and O. nigritus were discussed in the previous paragraph. O. karafutonis was previously recorded in the Korean Peninsula by Matsumura (1915). According to Anufriev & Emeljanov (1988), O. karafutonis is the junior synonym of O. nigritus, and Kwon et al. (1994) have changed the Korean record to O. nigritus. O. nigritus is being removed from the Korean fauna because we have reexamined the species status of O. karafutonis stat. rev. and revised the record. Mismatch between female and male of O. nigritus. The blackish coloration of O. nigritus was described in the protologue, which corresponds with the female lectotype specimen (Matsumura, 1911) (Figs 9 A – E). According to Anufriev & Emeljanov (1988) which contrasts with the protologue: “ In females, face and venter darkened, dorsal part of body light brown ”. The male specimen in the SEHU collections complied with Anufriev & Emeljanov (1988) descriptions of external and genital characteristics (Figs 10 A – E; 11 A – F). Further research is necessary to determine the cause of this issue whether it’s sexual dimorphism or specific species.	en	Park, Jaekook, Jung, Sunghoon (2024): The genus Ommatidiotus Spinola (Hemiptera: Auchenorrhyncha: Caliscelidae) from the Korean Peninsula and neighboring countries. Zootaxa 5496 (2): 172-190, DOI: 10.11646/zootaxa.5496.2.2, URL: http://dx.doi.org/10.11646/zootaxa.5496.2.2
D47787A29300FFC3FF754D8FFB6CF0D4.taxon	description	(Figs 2 A – E)	en	Park, Jaekook, Jung, Sunghoon (2024): The genus Ommatidiotus Spinola (Hemiptera: Auchenorrhyncha: Caliscelidae) from the Korean Peninsula and neighboring countries. Zootaxa 5496 (2): 172-190, DOI: 10.11646/zootaxa.5496.2.2, URL: http://dx.doi.org/10.11646/zootaxa.5496.2.2
D47787A29300FFC3FF754D8FFB6CF0D4.taxon	description	Redescription. Female. COLORATION: General coloration of body light yellow. Ventral parts of body darker, distinctly contrast with background. Coryphe concolorous with background with indistinct relatively broad longitudinal dark stripes with a narrow reddish stripe medially, contrasted bicolored, surpassing pronotum and reaching posterior margins of mesonotum. Compound eyes darker than background. Pronotum with reddish median stripe. Paranotal lobes darker than background. Forewings with yellowish stripes weakly developed between cubital and median cells, almost reaching posterior margins. Femur concolorous with abdomen, apices light brown. Tibiae and tarsus concolorous with background. Apices of leg spines black (Figs 2 A – E). SURFACE AND VESTITURE: Head, body and forewings with sparse setae, rough. STRUCTURE: Head. Coryphe blunt, length as wide as width at midline, without carinae; anterior margin round, posterior margin weakly concave (Fig. 2 C). Metope short and blunt in lateral view, lateral keels converging narrower to apical, sublateral carinae visible (Figs 2 D – E). Thorax. Pronotum distinctly shorter than coryphe at midline, without median carinae. Paradiscal fields of pronotum narrower behind eyes. Paranotal lobes of pronotum ovate, protruding ventrally (Fig. 2 D). Posterior margin of pronotum concave. Mesonotum large, almost three times longer than pronotum, anterior margin convex, with visible lateral carinae reaching posterior margins (Fig. 2 C). Forewings not elongated, abdominal margins almost reaching forewing (Fig. 2 A – B). Abdomen. in lateral view, almost flat; length of each tergites almost similar (Figs 2 A – B). See Fallén (1806) for original description and Dlabola (1987) also. Measurements (in mm). Female (n = 1). Body length (including forewing): 4.54; body length (excluding forewing): 4.18; body width (including forewing): 1.80; head length: 0.87; head width (including eyes): 1.25; coryphe length: 0.60; coryphe width: 0.69; metope length: 0.86; metope width: 0.80; pronotum length: 0.34; pronotum width: 0.92; mesonotum length: 0.71; mesonotum width: 0.99; forewing length: 3.47.	en	Park, Jaekook, Jung, Sunghoon (2024): The genus Ommatidiotus Spinola (Hemiptera: Auchenorrhyncha: Caliscelidae) from the Korean Peninsula and neighboring countries. Zootaxa 5496 (2): 172-190, DOI: 10.11646/zootaxa.5496.2.2, URL: http://dx.doi.org/10.11646/zootaxa.5496.2.2
D47787A29300FFC3FF754D8FFB6CF0D4.taxon	materials_examined	Material examined. 1 ♀, Jangbaek-san (Mt.), Joseon;?. 1914, Yoichiro Ikuma leg. (SEHU). Distributions. North Korea (Mt. Baekdu) *, Transpalearctic.	en	Park, Jaekook, Jung, Sunghoon (2024): The genus Ommatidiotus Spinola (Hemiptera: Auchenorrhyncha: Caliscelidae) from the Korean Peninsula and neighboring countries. Zootaxa 5496 (2): 172-190, DOI: 10.11646/zootaxa.5496.2.2, URL: http://dx.doi.org/10.11646/zootaxa.5496.2.2
D47787A29300FFC3FF754D8FFB6CF0D4.taxon	biology_ecology	Hosts. Eriophorum vaginatum (Poales, Cyperaceae) (Nickel, 2003), Juncus sp. (Juncaceae) (Lodos & Kalkandelen, 1981).	en	Park, Jaekook, Jung, Sunghoon (2024): The genus Ommatidiotus Spinola (Hemiptera: Auchenorrhyncha: Caliscelidae) from the Korean Peninsula and neighboring countries. Zootaxa 5496 (2): 172-190, DOI: 10.11646/zootaxa.5496.2.2, URL: http://dx.doi.org/10.11646/zootaxa.5496.2.2
D47787A29300FFC3FF754D8FFB6CF0D4.taxon	discussion	Remarks. The length and shape of coryphe of this species seems to be influenced by geographic variations (Dlabola, 1987: 77, Abb. 10 – 17). This specimen was collected in Mt. Baekdu (= Mt. Jangbaek) which is located in the northernmost region of the Korean Peninsula, and has similarities to the Mongolian variations.	en	Park, Jaekook, Jung, Sunghoon (2024): The genus Ommatidiotus Spinola (Hemiptera: Auchenorrhyncha: Caliscelidae) from the Korean Peninsula and neighboring countries. Zootaxa 5496 (2): 172-190, DOI: 10.11646/zootaxa.5496.2.2, URL: http://dx.doi.org/10.11646/zootaxa.5496.2.2
D47787A29302FFCDFF754FEAFD05F391.taxon	description	(Figs 3 A – B, 4 A – E)	en	Park, Jaekook, Jung, Sunghoon (2024): The genus Ommatidiotus Spinola (Hemiptera: Auchenorrhyncha: Caliscelidae) from the Korean Peninsula and neighboring countries. Zootaxa 5496 (2): 172-190, DOI: 10.11646/zootaxa.5496.2.2, URL: http://dx.doi.org/10.11646/zootaxa.5496.2.2
D47787A29302FFCDFF754FEAFD05F391.taxon	description	Redescription. Female. COLORATION: General coloration of body brown. Ventral parts of body fuscous, contrast with background distinctly. Coryphe concolorous with background with longitudinal narrow reddish stripes, contrasted unicolored, surpassing pronotum and reaching posterior margins of mesonotum. surpassing pronotum, mesonotum and almost reaching posterior margins of mesonotum. Compound eyes grayish. Pronotum with reddish stripe. Paranotal lobes darker than background. Forewings with narrow reddish stripes weakly developed between cubital and median cells, not reaching posterior margins. Abdominal sternites concolorous. Tibiae and tarsus concolorous with background. Apices of leg spines black (Figs 4 A – E). SURFACE AND VESTITURE: Head, body and forewings with sparse setae, rough. STRUCTURE: Head. Coryphe blunt, length as wide as width at midline without carinae, anterior margin round, posterior margin weakly concave (Figs 4 A – B). Metope short and blunt in lateral view, lateral keels converging narrower to apical, sublateral carinae visible (Fig. 4 C). Thorax. Pronotum distinctly shorter than coryphe at midline, without median carinae. Paradiscal fields of pronotum narrower behind eyes. Paranotal lobes of pronotum ovate, protruding ventrally. Posterior margin of pronotum concave. Mesonotum large, almost three times longer than pronotum, anterior margin convex, with lateral carinae reaching posterior margin (Figs 4 C – E). Forewings elongated, surpassing posterior margin of abdomen distinctly (Figs 4 A – B). Abdomen. in lateral view, almost flat (Fig. 3 B). See Matsumura (1911) for original description also. Measurements (in mm). Female (n = 2). Body length (including forewing): 4.66 - 4.77; body length (excluding forewing): 3.96 - 3.98; body width (including forewing): 1.76 - 1.78; head length: 0.95 - 0.97; head width (including eyes): 1.31 - 1.32; coryphe length: 0.61 - 0.63; coryphe width: 0.74 - 0.75; metope length: 0.93 - 0.94; metope width: 0.80 - 0.82; pronotum length: 0.36 - 0.37; pronotum width: 0.90 - 0.91; mesonotum length: 0.75 - 0.77; mesonotum width: 0.95 - 0.96; forewing length: 3.62 - 3.65.	en	Park, Jaekook, Jung, Sunghoon (2024): The genus Ommatidiotus Spinola (Hemiptera: Auchenorrhyncha: Caliscelidae) from the Korean Peninsula and neighboring countries. Zootaxa 5496 (2): 172-190, DOI: 10.11646/zootaxa.5496.2.2, URL: http://dx.doi.org/10.11646/zootaxa.5496.2.2
D47787A29302FFCDFF754FEAFD05F391.taxon	materials_examined	Material examined. Lectotype: 1 ♀, Sakhalin; 30. IX. 1905, Yoichiro Ikuma leg. (SEHU); Paralectotype: 1 ♀, same data as lectotype (SEHU). Distributions. North Korea (Matsumura, 1915), Russia (Sakhalin) (Matsumura, 1911).	en	Park, Jaekook, Jung, Sunghoon (2024): The genus Ommatidiotus Spinola (Hemiptera: Auchenorrhyncha: Caliscelidae) from the Korean Peninsula and neighboring countries. Zootaxa 5496 (2): 172-190, DOI: 10.11646/zootaxa.5496.2.2, URL: http://dx.doi.org/10.11646/zootaxa.5496.2.2
D47787A29302FFCDFF754FEAFD05F391.taxon	biology_ecology	Hosts. Unknown.	en	Park, Jaekook, Jung, Sunghoon (2024): The genus Ommatidiotus Spinola (Hemiptera: Auchenorrhyncha: Caliscelidae) from the Korean Peninsula and neighboring countries. Zootaxa 5496 (2): 172-190, DOI: 10.11646/zootaxa.5496.2.2, URL: http://dx.doi.org/10.11646/zootaxa.5496.2.2
D47787A29302FFCDFF754FEAFD05F391.taxon	discussion	Remarks. This species was a junior synonym for O. nigritus Matsumura by Anufriev and Emeljanov (1988). We reevaluated the species status of this species because the type specimens are respective in the type depository and have different morphological characters.	en	Park, Jaekook, Jung, Sunghoon (2024): The genus Ommatidiotus Spinola (Hemiptera: Auchenorrhyncha: Caliscelidae) from the Korean Peninsula and neighboring countries. Zootaxa 5496 (2): 172-190, DOI: 10.11646/zootaxa.5496.2.2, URL: http://dx.doi.org/10.11646/zootaxa.5496.2.2
D47787A2930CFFCEFF754D2EFEFAF345.taxon	description	(Figs 5 A – B, 6 A – E, 7 A – F)	en	Park, Jaekook, Jung, Sunghoon (2024): The genus Ommatidiotus Spinola (Hemiptera: Auchenorrhyncha: Caliscelidae) from the Korean Peninsula and neighboring countries. Zootaxa 5496 (2): 172-190, DOI: 10.11646/zootaxa.5496.2.2, URL: http://dx.doi.org/10.11646/zootaxa.5496.2.2
D47787A2930CFFCEFF754D2EFEFAF345.taxon	description	Redescription. Male. COLORATION: General coloration of body whitish gray. Ventral parts of body fuscous, contrast with background distinctly. Coryphe concolorous but slightly fuscous at anteriorly, with indistinct longitudinal dark stripes with reddish stripe strongly developed medially, contrasted unicolored, surpassing pronotum and reaching posterior margins of mesonotum and almost reaching posterior portions of forewing. Paranotal lobes fuscous. Forewings with narrow reddish stripes medially, with strong fuscous markings on margins of costal area reaching posterior margins, yellowish stripes weakly developed between cubital and median cells, not reaching posterior margins. Abdominal sternites concolorous, posterior margins light yellowish. Femur fuscous, apices light brown. Tibiae and tarsus concolorous with background but apices fuscous. Apices of leg spines black (Figs 6 A – E). SURFACE AND VESTITURE: Head with several coarse setae, body and forewings with sparse setae, rough. STRUCTURE: Head. Coryphe elongated visibly, almost two times longer than width without carinae, anterior margins round, posterior slightly concave (Figs 6 C – D). Metope ventrally convex in lateral view, lateral keels converging narrower to apical, median carinae visible (Fig. 6 E). Thorax. Pronotum distinctly shorter than coryphe, without median carinae. Paradiscal fields of pronotum narrower behind eyes. Paranotal lobes of pronotum ovate, protruding ventrally. Posterior margin of pronotum concave. Mesonotum large, almost two times longer than pronotum, anterior margin convex, with lateral carinae reaching posterior margin (Figs 6 C – D). Forewings elongated, surpassing posterior margin of abdomen (Figs 6 A – B). Abdomen. In lateral view, almost flat; length of each tergites almost similar (Fig. 6 B). Genitalia. Genital block in lateral view slightly wide basally, apical to posterior margins irregularly concaved (Fig. 7 E). Aedeagus long and asymmetrical, complex endosome ovovate ventroapically (Fig. 7 C). In dorsocaudal view, apical of complex shaped irregular star-like, upper three processes long, protruding upward, lower two processes protruding ventrally and left process curved to upward (Fig. 7 D). In lateral view, a pair of ventral aedeagal hooks asymmetrical, left hook parallel with complex and slightly curved, right hook vertical with complex and slightly curved, widest at middle; a pair of subapical processes strongly developed at middle, not reaching posterior margins and branched at apical (Fig. 7 C); genital style roundly widest at basal, pointed at apical and strongly curved; capitulum of style spinous (Fig. 7 E); Anal tube in dorsal view, ovate and convex apically; anal column placed at middle and small, not reaching the posterior margin (Fig. 7 F). See Matsumura (1915) for original description also. Measurements (in mm). Male (n = 1). Body length (including forewing): 5.93; body length (excluding forewing): 5.34; body width (including forewing): 1.66; head length: 1.73; head width (including eyes): 1.30; coryphe length: 1.38; coryphe width: 0.64; metope length: 1.93; metope width: 0.79; pronotum length: 0.43; pronotum width: 0.95; mesonotum length: 0.80; mesonotum width: 1.02; forewing length: 3.91.	en	Park, Jaekook, Jung, Sunghoon (2024): The genus Ommatidiotus Spinola (Hemiptera: Auchenorrhyncha: Caliscelidae) from the Korean Peninsula and neighboring countries. Zootaxa 5496 (2): 172-190, DOI: 10.11646/zootaxa.5496.2.2, URL: http://dx.doi.org/10.11646/zootaxa.5496.2.2
D47787A2930CFFCEFF754D2EFEFAF345.taxon	materials_examined	Material examined. Holotype: 1 ♂, Mt. Kumgang, Joseon; late. X. 1914, Yoichiro Ikuma leg. (SEHU).	en	Park, Jaekook, Jung, Sunghoon (2024): The genus Ommatidiotus Spinola (Hemiptera: Auchenorrhyncha: Caliscelidae) from the Korean Peninsula and neighboring countries. Zootaxa 5496 (2): 172-190, DOI: 10.11646/zootaxa.5496.2.2, URL: http://dx.doi.org/10.11646/zootaxa.5496.2.2
D47787A2930CFFCEFF754D2EFEFAF345.taxon	distribution	Distribution. North Korea (Mt. Kumgang) (Matsumura, 1915).	en	Park, Jaekook, Jung, Sunghoon (2024): The genus Ommatidiotus Spinola (Hemiptera: Auchenorrhyncha: Caliscelidae) from the Korean Peninsula and neighboring countries. Zootaxa 5496 (2): 172-190, DOI: 10.11646/zootaxa.5496.2.2, URL: http://dx.doi.org/10.11646/zootaxa.5496.2.2
D47787A2930CFFCEFF754D2EFEFAF345.taxon	biology_ecology	Hosts. Unknown. Ecology. In moist and swamp meadows, more often in flood plains of rivers. Mid-July to mid-August (Anufriev & Emeljanov, 1988).	en	Park, Jaekook, Jung, Sunghoon (2024): The genus Ommatidiotus Spinola (Hemiptera: Auchenorrhyncha: Caliscelidae) from the Korean Peninsula and neighboring countries. Zootaxa 5496 (2): 172-190, DOI: 10.11646/zootaxa.5496.2.2, URL: http://dx.doi.org/10.11646/zootaxa.5496.2.2
D47787A2930CFFCEFF754D2EFEFAF345.taxon	discussion	Remarks. Matsumura (1915) indicated that the holotype specimen was female, but Liang and Suwa (1998) corrected this error.	en	Park, Jaekook, Jung, Sunghoon (2024): The genus Ommatidiotus Spinola (Hemiptera: Auchenorrhyncha: Caliscelidae) from the Korean Peninsula and neighboring countries. Zootaxa 5496 (2): 172-190, DOI: 10.11646/zootaxa.5496.2.2, URL: http://dx.doi.org/10.11646/zootaxa.5496.2.2
D47787A2930FFFCAFF754C5AFC84F3AD.taxon	description	(Figs 8 A – B, 9 A – E, 10 A – E, 11 A – F)	en	Park, Jaekook, Jung, Sunghoon (2024): The genus Ommatidiotus Spinola (Hemiptera: Auchenorrhyncha: Caliscelidae) from the Korean Peninsula and neighboring countries. Zootaxa 5496 (2): 172-190, DOI: 10.11646/zootaxa.5496.2.2, URL: http://dx.doi.org/10.11646/zootaxa.5496.2.2
D47787A2930FFFCAFF754C5AFC84F3AD.taxon	description	Redescription. Male. COLORATION: General coloration of body light brown. Ventral parts of body fuscous, contrast with background distinctly. Coryphe concolorous with background with longitudinal reddish stripes, contrasted bicolored, surpassing pronotum and almost reaching posterior margins of mesonotum. Compound eyes darker than background. Pronotum with reddish median stripe. Paranotal lobes fuscous. Forewings with narrow reddish stripe medially, with strong fuscous markings on margins of costal area reaching posterior margins, yellowish stripes weakly developed between cubital and median cells, not reaching posterior margins. Femur black. Tibiae and tarsus light brown (Figs 10 A – E). SURFACE AND VESTITURE: Head, body and forewings with sparse setae. STRUCTURE: Head. Coryphe blunt, length slightly shorter than width at midline; anterior margin round but slightly angulated, posterior margin weakly concave (Fig. 10 C). Metope short and blunt, lateral keels converging narrower to apical, sublateral carinae visible (Fig. 10 E). Thorax. Pronotum distinctly shorter than coryphe at midline, with median carina reaching anterior and posterior margin. Paradiscal fields of pronotum narrower behind eyes. Paranotal lobes of pronotum ovate, protruding ventrally. Posterior margin of pronotum concave. Mesonotum large, almost three times longer than pronotum, anterior margin convex, with lateral carinae reaching posterior margin (Figs 10 C – D). Forewings elongated, surpassing posterior margin of abdomen and not converging at apex (Figs 10 A – B). Abdomen. In lateral view, almost flat; length of each tergites almost similar (Fig. 10 B). Genitalia. Genital block in lateral view slightly wide basally, apical to posterior margins irregularly concaved (Fig. 11 B). Aedeagus long and asymmetrical, complex endosome ovovate ventroapically (Fig. 11 C). In dorsocaudal view, apical of complex shaped irregular star-like, upper three processes relatively short, protruding upward, lower two processes protruding ventrally and left process curved to upward (Fig. 11 D). In lateral view, a pair of ventral aedeagal hooks asymmetrical, left hook parallel with complex and slightly curved, right hook vertical with complex and slightly curved, widest at middle; a pair of subapical processes strongly developed at middle, not reaching posterior margins and branched at apical (Fig. 11 C); genital style roundly widest at basal, pointed at apical and strongly curved; capitulum of style spinous (Fig. 11 E); Anal tube in dorsal view, ovate and convex apically; anal column placed at middle and small, not reaching the posterior margin (Fig. 11 F). Female. COLORATION: General coloration of body black. Forewings slightly bright than background, fuscous. Abdomens and abdominal sternites concolorous. Femur black. Tibiae and tarsus concolorous with background (Figs 9 A – E). SURFACE AND VESTITURE: Head, body and forewings with sparse setae, rough. STRUCTURE: Head. Coryphe blunt, length as wide as width at midline; anterior margin round, posterior margin weakly concave (Figs 9 C – D). Metope short and blunt in lateral view, lateral keels converging narrower to apical, sublateral carinae visible (Fig. 9 E). Thorax. Pronotum distinctly shorter than coryphe at midline. Paradiscal fields of pronotum narrower behind eyes. Paranotal lobes of pronotum ovate, protruding ventrally. Posterior margin of pronotum concave. Mesonotum large, almost three times longer than pronotum, anterior margin convex, with lateral carinae reaching posterior margin (Figs 9 C – D). Forewings elongated, surpassing posterior margin of abdomen and not converging at apex (Figs 9 A – B). Abdomen. in lateral view, almost flat; length of each tergites almost similar (Figs 9 B). See Matsumura (1911) for original description also. Measurements (in mm). Male (n = 1) / Female (n = 1). Body length (including forewing): 3.51 / 4.58; body length (excluding forewing): 3.05 / 4.10; body width (including forewing): 1.29 / 1.57; head length: 0.74 / 0.94; head width (including eyes): 1.08 / 1.30; coryphe length: 0.45 / 0.59; coryphe width: 0.57 / 0.71; metope length: 0.70 / 0.94; metope width: 0.64 / 0.79; pronotum length: 0.34 / 0.40; pronotum width: 0.75 / 0.83; mesonotum length: 0.59 / 0.70; mesonotum width: 0.81 / 1.03; forewing length: 2.57 / 3.44.	en	Park, Jaekook, Jung, Sunghoon (2024): The genus Ommatidiotus Spinola (Hemiptera: Auchenorrhyncha: Caliscelidae) from the Korean Peninsula and neighboring countries. Zootaxa 5496 (2): 172-190, DOI: 10.11646/zootaxa.5496.2.2, URL: http://dx.doi.org/10.11646/zootaxa.5496.2.2
D47787A2930FFFCAFF754C5AFC84F3AD.taxon	materials_examined	Material examined. Lectotype: 1 ♀, Sakhalin; 30. IX. 1905, Yoichiro Ikuma leg. (SEHU); 1 ♂, Sakhalin; collecting date and collector unavailable with no labels. (SEHU). Distributions. Russia (Sakhalin) (Matsumura, 1911, 1916).	en	Park, Jaekook, Jung, Sunghoon (2024): The genus Ommatidiotus Spinola (Hemiptera: Auchenorrhyncha: Caliscelidae) from the Korean Peninsula and neighboring countries. Zootaxa 5496 (2): 172-190, DOI: 10.11646/zootaxa.5496.2.2, URL: http://dx.doi.org/10.11646/zootaxa.5496.2.2
D47787A2930FFFCAFF754C5AFC84F3AD.taxon	biology_ecology	Hosts. Unknown. Ecology. Sedge marshes and swamp meadows. Late July to early September (Anufriev & Emeljanov, 1988).	en	Park, Jaekook, Jung, Sunghoon (2024): The genus Ommatidiotus Spinola (Hemiptera: Auchenorrhyncha: Caliscelidae) from the Korean Peninsula and neighboring countries. Zootaxa 5496 (2): 172-190, DOI: 10.11646/zootaxa.5496.2.2, URL: http://dx.doi.org/10.11646/zootaxa.5496.2.2
D47787A2930FFFCAFF754C5AFC84F3AD.taxon	discussion	Remarks. According to Liang & Suwa (1998), ‘ This species was described from four female specimens. We have found only one female syntype’. The depository contained a female lectotype, which is consistent with the previous study. We examined a male specimen that corresponds to Anufriev & Emeljanov (1988) from the Matsumura collections, but the female lectotype and the protologue (Matsumura, 1911) differed from the male specimen and the morphological characters in Anufriev & Emeljanov (1988) (See the respective redescriptions of the male and female habitus above). Further verification is necessary to confirm that examined specimens are the same species since there are no specimens of the same gender available for comparison.	en	Park, Jaekook, Jung, Sunghoon (2024): The genus Ommatidiotus Spinola (Hemiptera: Auchenorrhyncha: Caliscelidae) from the Korean Peninsula and neighboring countries. Zootaxa 5496 (2): 172-190, DOI: 10.11646/zootaxa.5496.2.2, URL: http://dx.doi.org/10.11646/zootaxa.5496.2.2
D47787A2930BFFD5FF754D73FA15F01C.taxon	description	MALE	en	Park, Jaekook, Jung, Sunghoon (2024): The genus Ommatidiotus Spinola (Hemiptera: Auchenorrhyncha: Caliscelidae) from the Korean Peninsula and neighboring countries. Zootaxa 5496 (2): 172-190, DOI: 10.11646/zootaxa.5496.2.2, URL: http://dx.doi.org/10.11646/zootaxa.5496.2.2
D47787A2930BFFD5FF754D73FA15F01C.taxon	description	FEMALE	en	Park, Jaekook, Jung, Sunghoon (2024): The genus Ommatidiotus Spinola (Hemiptera: Auchenorrhyncha: Caliscelidae) from the Korean Peninsula and neighboring countries. Zootaxa 5496 (2): 172-190, DOI: 10.11646/zootaxa.5496.2.2, URL: http://dx.doi.org/10.11646/zootaxa.5496.2.2
