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Lipsothrix jiri Podenas, sp. nov. from South Korea is described and illustrated. It is the second species of Lipsothrix Loew, 1873 recorded so far from the Korean Peninsula. The new species has dark brown dorsal and yellow ventral surface of the body and abundant macrotrichiae in apical wing cells. Elevation range, period of activity, habitat information and a distribution map are presented.

Lipsothrix odaesana Podenas & Petersen, sp. nov. from South Korea is described and illustrated. It is the only species of Lipsothrix Loew, 1873 recorded so far from the Korean Peninsula. Elevation range, period of activity, habitat information and a distribution map are presented.

A total of 38 Korean species of crane flies belonging to the genus Dicranomyia Stephens, 1829 (Diptera: Limoniidae: Limoniinae) are taxonomically revised. No species of Dicranomyia were previously reported from South Korea, and only twelve species were reported from North Korea. New records of Dicranomyia from the Korean Peninsula include: D. (Dicranomyia) depauperata Alexander, 1918, D. (D.) distendens pallida Savchenko, 1983, D. (D.) handlirschi handlirschi Lackschewitz, 1928, D. (D.) hyalinata (Zetterstedt, 1851), D. (D.) kandybinae Savchenko, 1987, D. (D.) longipennis (Schummel, 1829), D. (D.) mesosternatoides Alexander, 1924, D. (D.) modesta (Meigen, 1818), D. (D.) pammelas Alexander, 1925, D. (D.) poli (Alexander, 1941), D. (D.) sera (Walker, 1848), D. (D.) shinanoensis (Alexander, 1933), D. (D.) takeuchii Alexander, 1922, D. (D.) unispinosa Alexander, 1921, D. (Erostrata) globithorax Osten Sacken, 1869, D. (E.) globulithorax Alexander, 1924, D. (E.) yazuensis Kato et al., 2018, D. (Glochina) basifusca Alexander, 1919, D. (Melanolimonia) paramorio platysoma (Alexander, 1933), D. (Numantia) fusca (Meigen, 1804), D. (Sivalimnobia) euphileta (Alexander, 1924). Species D. (D.) byuni Podenas, sp. nov., D. (D.) cornuta Podenas, sp. nov., D. (D.) jirisana Podenas, sp. nov., D. (D.) petrasiuni Podenas, sp. nov., and D. (D.) yankovskyi Podenas, sp. nov. are described. An additional ten new records are reported from North Korea, bringing the total number of Dicranomyia species known from North Korea to 22 species. South Korea has a greater diversity of Dicranomyia with total number of 30 species. D. (D.) amurensis Alexander, 1925 is synonymised with D. (D.) hyalinata (Zetterstedt, 1851). An illustrated key with redescriptions and photographs of all species and both sexes of adults collected in Korea are presented. Most females are illustrated or described for the first time. Elevation range, period of activity, habitat information, general distribution and a distribution map in Korean Peninsula is given for each species.

The Korean species of Libnotes (Laosa) Edwards, 1926 and L. (Libnotes) Westwood, 1876 from Jeju Island are taxonomically revised. L. (Laosa) charmosyne (Alexander, 1958) and L. (Libnotes) divaricata (Alexander, 1924) are new records for South Korea and L. (Libnotes) byersiana n. sp. is described. An identification key for all Korean Libnotes, redescriptions and illustrations of the three currently known Jeju species are presented.

Korean species of the crane fly genus Rhipidia Meigen, 1818 (Diptera: Limoniidae), are taxonomically revised. Rhipidia (Rhipidia) serena, new species, is described and figured. Rhipidia (R.) longa Zhang, Li, Yang, 2014, R. (R.) maculata Meigen, 1818 and R. (R.) sejuga Zhang, Li, Yang, 2014 are recorded for the first time in Korea. Previously known species, Rhipidia (R.) septentrionis Alexander, 1913 is redescribed and illustrated. Identification key for all Korean Rhipidia species is given. Most antennae, wings, male and female terminalia of all species are illustrated for the first time.

Korean species of the crane fly genus Metalimnobia Matsumura, 1911 (Diptera: Limoniidae), are taxonomically revised. Metalimnobia (Metalimnobia) channpayna new species, is described and figured, M. (M.) bifasciata (Schrank, 1781), M. (M.) quadrinotata (Meigen, 1818) and M. (M.) zetterstedti (Tjeder, 1968) are listed for the first time in Korea, new information for previously known species, M. (M.) quadrimaculata (Linnaeus, 1760) is added. Identification key for all Korean Metalimnobia species is given. Wings, male and female terminalia are illustrated for all species.

Geranomyia kunashir n. sp. from Kunashir Island (Far East of Russia), Geranomyia piagola n. sp. and Geranomyia semjina n. sp. from South Korea are described. Keys for all species of Korean Geranomyia are presented.

Taiwanese species of the crane fly subgenus Antocha (Antocha) Osten Sacken, 1860, are reviewed. Antocha (Antocha) taiwanensis, new species, is described and figured. Previously known species, Antocha (A.) bifida Alexander, 1924a and Antocha (A.) styx Alexander, 1930 are redescribed and illustrated. Antocha (A.) javanensis Alexander, 1915 is removed from the list of Taiwanese crane flies. Antocha (A.) gracillima Alexander, 1924b and species close to Antocha (A.) streptocera Alexander, 1949 are listed for the first time in Taiwan. Identification key for all Taiwanese Antocha species is given.

The Korean crane fly species of the genus Heterangaeus Alexander, 1925 (Diptera: Pediciidae) is taxonomically revised. H. gloriosus gloriosus (Alexander, 1924) is redescribed. A new species Heterangaeus koreanus n. sp., which is the first species of Pediciidae from South Korea, is described and illustrated.

Two new species of Dicranoptycha Osten Sacken, 1859, crane flies (Diptera, Limoniidae) from the Korean peninsula are described, illustrated and compared with already known and related species. An identification key and check-list of all Korean Dicranoptycha is presented.

New species Antocha (Antocha) koreana from South Korea is described and illustrations of the distinguishing morphological features, including wing venation, male and female genitalia and male antenna, are provided with a discussion on distinguishing newly described species from other similar species. Habitat information for new species is presented. Antocha (Antocha) subconfluenta Alexander, 1930 is new record for Korean fauna and first record from outside Japan.

A new species of Pediciidae, Heterangaeus mongolicus is described from specimens collected during the fieldwork of the Mongolian Aquatic Insect Survey Project in north-central Mongolia, Tov Aimag (district). Descriptions and illustrations of the distinguishing morphological features are provided. Habitat information is presented. Female ovipositor and larvae of Heterangaeus are described and illustrated for the first time. This discovery of Heterangaeus in Mongolia represents a 1700 kilometer extension of the known distribution for the genus.

1830 egg-larvae of 7 species belonging to long palped crane flies (Tipulidae): Ctenophora guttata Meigen, Nephrotoma pratensis Linnaeus, N. dorsalis Fabricius, N. scurra Meigen, N. flavescens Linnaeus, N. submaculosa Edwards and N. crocata Linnaeus were obtained from 22 females captured in Lithuania in 2011-2012. It took from five days to more than three weeks for eggs to hatch. Crane flies have four instars of larvae. Second, third and the last instar larvae are very similar, when the first instar or egg-larvae differs radically. Descriptions and illustrations of external morphology, chaetotaxy of abdominal segments, characters of head capsules and last abdominal segments are given for the previously unknown first instar larvae of Ct. guttata, N. crocata, N. dorsalis, N. flavescens, N. pratensis, N. scurra and poorly known N. submaculosa. It was found out that difference of head capsule and last abdominal segment among the first instar larvae of above mentioned species of genus Nephrotoma are more obvious than in last instar. During this study it was found, that such characters as shape of apical teeth of mandible, shape of basal segment of antenna and number of sensillae, shape of hypostomium and arrangement of sensory structures on labrum, differ among egg-larvae of Nephrotoma. It was found, that pads on frontal part of prothorax and shape of lateral plates of egg-larvae labrum of Nephrotoma differ significantly from that of Ctenophora and could be used as genus separating characters.

Korean species of the crane fly genus Rhipidia Meigen, 1818 (Diptera: Limoniidae), are taxonomically revised. Rhipidia (Rhipidia) serena, new species, is described and figured. Rhipidia (R.) longa Zhang, Li, Yang, 2014, R. (R.) maculata Meigen, 1818 and R. (R.) sejuga Zhang, Li, Yang, 2014 are recorded for the first time in Korea. Previously known species, Rhipidia (R.) septentrionis Alexander, 1913 is redescribed and illustrated. Identification key for all Korean Rhipidia species is given. Most antennae, wings, male and female terminalia of all species are illustrated for the first time.

Korean species of the crane fly genus Metalimnobia Matsumura, 1911 (Diptera: Limoniidae), are taxonomically revised. Metalimnobia ( Metalimnobia ) channpayna new species, is described and figured, M. ( M. ) bifasciata (Schrank, 1781), M . ( M .) quadrinotata (Meigen, 1818) and M . ( M. ) zetterstedti (Tjeder, 1968) are listed for the first time in Korea, new information for previously known species, M. ( M. ) quadrimaculata (Linnaeus, 1760) is added. Identification key for all Korean Metalimnobia species is given. Wings, male and female terminalia are illustrated for all species.

Taiwanese species of the crane fly subgenus Antocha (Antocha) Osten Sacken, 1860, are reviewed. Antocha (Antocha) taiwanensis, new species, is described and figured. Previously known species, Antocha (A.) bifida Alexander, 1924a and Antocha (A.) styx Alexander, 1930 are redescribed and illustrated. Antocha (A.) javanensis Alexander, 1915 is removed from the list of Taiwanese crane flies. Antocha (A.) gracillima Alexander, 1924b and species close to Antocha (A.) streptocera Alexander, 1949 are listed for the first time in Taiwan. Identification key for all Taiwanese Antocha species is given.

The Korean crane fly species of the genus Heterangaeus Alexander, 1925 (Diptera: Pediciidae) is taxonomically revised. H. gloriosus gloriosus (Alexander, 1924) is redescribed. A new species Heterangaeus koreanus n. sp., which is the first species of Pediciidae from South Korea, is described and illustrated.

Two new species of Dicranoptycha Osten Sacken, 1859, crane flies (Diptera, Limoniidae) from the Korean peninsula are described, illustrated and compared with already known and related species. An identification key and check-list of all Korean Dicranoptycha is presented.

New species Antocha ( Antocha ) koreana from South Korea is described and illustrations of the distinguishing morphological features, including wing venation, male and female genitalia and male antenna, are provided with a discussion on distinguishing newly described species from other similar species. Habitat information for new species is presented. Antocha ( Antocha ) subconfluenta Alexander, 1930 is new record for Korean fauna and first record from outside Japan.

A new species of Pediciidae, Heterangaeus mongolicus is described from specimens collected during the fieldwork of the Mongolian Aquatic Insect Survey Project in north-central Mongolia, Tov Aimag (district). Descriptions and illustrations of the distinguishing morphological features are provided. Habitat information is presented. Female ovipositor and larvae of Heterangaeus are described and illustrated for the first time. This discovery of Heterangaeus in Mongolia represents a 1700 kilometer extension of the known distribution for the genus.

1830 egg-larvae of 7 species belonging to long palped crane flies (Tipulidae): Ctenophora guttata Meigen, Nephrotoma pratensis Linnaeus, N. dorsalis Fabricius, N. scurra Meigen, N. flavescens Linnaeus, N. submaculosa Edwards and N. crocata Linnaeus were obtained from 22 females captured in Lithuania in 2011-2012. It took from five days to more than three weeks for eggs to hatch. Crane flies have four instars of larvae. Second, third and the last instar larvae are very similar, when the first instar or egg-larvae differs radically. Descriptions and illustrations of external morphology, chaetotaxy of abdominal segments, characters of head capsules and last abdominal segments are given for the previously unknown first instar larvae of Ct. guttata, N. crocata, N. dorsalis, N. flavescens, N. pratensis, N. scurra and poorly known N. submaculosa. It was found out that difference of head capsule and last abdominal segment among the first instar larvae of above mentioned species of genus Nephrotoma are more obvious than in last instar. During this study it was found, that such characters as shape of apical teeth of mandible, shape of basal segment of antenna and number of sensillae, shape of hypostomium and arrangement of sensory structures on labrum, differ among egg-larvae of Nephrotoma. It was found, that pads on frontal part of prothorax and shape of lateral plates of egg-larvae labrum of Nephrotoma differ significantly from that of Ctenophora and could be used as genus separating characters.