Tanytarsini (Diptera: Chironomidae) collected during Polish expeditions to North Korea Author Giłka, Wojciech 0000-0002-8403-5432 University of Gdańsk, Faculty of Biology, Department of Invertebrate Zoology and Parasitology, Laboratory of Systematic Zoology; Wita Stwosza 59, 80 - 308 Gdańsk, Poland. & wojciech. gilka @ ug. edu. pl; https: // orcid. org / 0000 - 0002 - 8403 - 5432 wojciech.gilka@ug.edu.pl Author Gadawski, Piotr 0000-0001-9334-1960 University of Lódź, Faculty of Biology and Environmental Protection, Department of Invertebrate Zoology and Hydrobiology; Banacha 12 / 16, 90 - 237 Łódź, Poland. & piotr. gadawski @ biol. uni. lodz. pl; https: // orcid. org / 0000 - 0001 - 9334 - 1960 piotr.gadawski@biol.uni.lodz.pl text Zootaxa 2022 2022-12-01 5214 2 151 175 journal article 198863 10.11646/zootaxa.5214.2.1 14abb8a4-9e30-4d40-83b4-c725db688c72 1175-5326 7384985 8E7D1FC9-FD58-4DB3-ACA6-5AE38BDB6B0A Cladotanytarsus ( Cladotanytarsus ) sinjongensis Ree et Kim, 1988 Cladotanytarsus sinjongensis Ree et Kim, 1988: 19 (male, fig. 4a–c; South Korea ). ( Fig. 2A–D ) Material examined. Phjŏngjang, 18 July 1981 , 32 males ; Sokam, 8 July 1981 , 1 male ; leg. W. Krzemiński. Remarks. A set of subtle morphological differences used in diagnostics, often overlapped by intraspecific variations, make the determination of adult males of Cladotanytarsus one of the most difficult within Tanytarsini and Chironomidae . Accurately mounted and illustrated specimens, their precise measurements and appropriate interpretation of diagnostic features are thus decisive. In fact, determination of Cladotanytarsus sinjongensis may be a challenge when based on the illustrated original description, although several crucial characters indicate that the specimens presently examined are conspecific with those described from South Korea ( Ree & Kim 1988 ). The males from North and South Korea compared here [data on the South Korean material, with remarks given in square brackets] are approximately of the same size, with the wing 1.18–1.45 mm long [1.2–1.3 mm], AR 0.90–1.03 [0.91–1.05], frontal tubercles 14–18 μm long [15–16 μm], similar lengths of palpomeres, leg ratios and the same body colouration. The hypopygial anal point is more or less lanceolate or tongue-shaped ( Fig. 2A, B ), 35–45 μm long [7–9 μm, inconsistency relative to the scaled fig. 4], the superior volsella is slender, narrowed at mid length, with the swollen and apically rounded distal part ( Fig. 2A, C ) [probably distorted during mounting], the stem of the median volsella is slightly curved, ~40 μm long [35–38 μm], with branched lamellae ( Fig. 2A, D ), as in all known Cladotanytarsus [the deep furcations overlooked].