Newly-recorded insect species from Seonginbong, Ulleungdo in 2020. Aa. Bostrichidae sp.; Ab. Apioninae sp.; Ac. Colpodes (Gyrochaetostylus) atricomes; Ad. Nipponoharpalus discrepans; Ae. Harpalus (Zangoharpalus) tinctulus luteicornoides; Af. Saperda octomaculata; Ba. Acalolepta sejuncta sejuncta; Bb. Protaetia lugubris; Bc. Paridea (Paridea) angulicollis; Bd. Meligethes flavicollis; Be. Bruchidius japonicus; Bf. Demotina modesta; Ca. Altica oleracea oleracea; Cb. Syneta adamsi; Cc. Epilachna quadricollis; Cd. Orchestes sp.; Ce. Pseudocneorhinus sp.; Cf. Bradybatus sp.; Da. Leiodidae sp.; Db. Catops sp.; Dc. Sophrops striata; Dd. Omosita discoidea; De. Epuraea (Epuraea) oblonga; Df. Neopallodes omogonis; Ea. Glischrochilus (Librodor) rufiventris; Eb. Ipidia (Ipidia) variolosa variolosa; Ec. Aspidobyctiscus (Aspidobyctiscus) lacunipennis; Ed. Blitopertha orientalis; Ee. Salpingus depressifrons; Ef. Uleiota arboreus; Fa. Allecula (Upinella) melanaria; Fb. Lagria nigricollis; Fc. Mycetochara (Ernocharis) orientalis; Fd. Lagria rufipennis; Fe. Euborellia annulata; Ff. Agromyzidae sp.; Ga. Bibio sp.1; Gb. Bibio sp.2; Gc. Bibio tenebrosus; Gd. Cecidomyiidae sp.; Ge. Chloropidae sp; Gf. Coelopa frigida; Ha. Condylostylus nebulosus; Hb. Dolichopodinae sp.; Hc. Ephydridae sp.; Hd. Suillia brunneipennis; He. Suillia lineitergum; Hf. Heleomyzidae sp.; Ia. Suillia sp.; Ib. Homoneura filiola; Ic. Homoneura haejuana; Id. Sciasmomyia supraorientalis; Ie. Homoneura sp.; If. Lonchoptera sp.; Ja. Dichaetomyia bibax; Jb. Atherigona sp.; Jc. Mycetophilidae sp.; Jd. Phoridae sp.1; Je. Phoridae sp.2; Jf. Euprosopia graham; Ka. Psila sp.; Kb. Scathophaga mellipes; Kc. Sciaridae sp.; Kd. Sphaeroceridae sp. 1; Ke. Sphaeroceridae sp. 2; Kf. Allognosta vagans; La. Acanthonevra trigona; Lb. Alydus calcaratus; Lc. Paraplesius unicolor; Ld. Drabescus nigrifemoratus; Le. Drabescus nitobei; Lf. Charagochilus (Charagochilus) angusticollis; Ma. Bryocoris montanus; Mb. Castanopsides sp.; Mc. Nabis (Milu) apicalis; Md. Gardena brevicollis; Me. Physatocheila fieberi; Mf. Technomyrmex gibbosus; Na. Lasius hayashi; Nb. Camponotus kiusiuensis; Nc. Formica lemani; Nd. Stenamma owstoni; Ne. Cryptopone sauteri; Nf. Temnothorax spinosior; Oa. Temnothorax sp.; Pa. Coelichneumon (Coelichneumon) cyaniventris; Pb. Patania chlorophanta; Pc. Manulea japonica; Pd. Thyas juno; Pe. Catocala lara; Pf. Miltochrista miniata; Qa. Hypocala subsatura; Qb. Erebidae sp.; Qc. Problepsis discophora; Qd. Pachyligia dolosa; Qe. Biston robustum; Qf. Orthosia askoldensis; Ra. Diarsia deparca; Rb. Dictyestra dissecta; Rc. Euplexia lucipara; Rd. Dimorphicosmia variegate; Re. Amyna sp.; Rf. Teleogryllus (Brachyteleogryllus) emma. Scale bars: Aa-Af, Bc-Mc, Me-Oa = 1.0 mm; Ba, Bb, Md, Pa-Rf = 1.0 cm.