S. Mahunka szerk.: Folia Entomologica Hungarica 57. (Budapest, 1996)

Microchelonus planiventris (Tobias, 1960), comb. n. — Described and hitherto known from Tadjikhistan. New to the fauna of Hungary. — Localities: 1/1: 1 female: Doboz, Szanazug — II/l: 1 male: Tapolca, Szentgyörgy-hegy — V. Microchelonus pusillus (Szépligeti, 1908) (?= M.furtivus Tobias, 1986; ?= Ch. acuminatus Herrich-Schaeffer, 1838) — Described from Hungary, listed in Finland. In Hungary taken mostly in the zoogeographical districts Eupannonicum (1/1) and Pilisicum (II/l). Supposedly the names Chelonus acuminatus and Microchelonus furtivus refers to this species. In the case of Herrich-Schaeffer's name Ch. acuminatus is older (senior synonym?), however, its original description is insufficient to decide its taxonomic position. — Localities: 1/1: 1 female: Csévharaszt, Rókás-erdő. 2 females: Nyíregyháza, Sóskút. 1 female: Szigetszentmiklós. 3 females + 1 male: Újszentmargita, Margitai-erdő, nature reserved forest. 1 female: Zamárdi, Zamárdi-felső — II/l: 1 female: Budaörs, ex Elachista sp. (Lepidoptera, Elachistidae), 27 May 1972, leg. et educ. J. Szöcs. 1 female (lectotype, in Budapest Museum, Hym. Typ. No. 536): Budapest, 2 August 1897, leg. Szépligeti. 1 female: Csákvár, Hosszú-hegy. 1 male: Nagykovácsi, Juliannamajor. 1 female: Révfülöp, Fülöp-hegy. 1 female: Szár, ex Elachista sp. (Lepidoptera, Elachistidae), 7 May 1978, host's food-plant Festuca pratensis, leg. et educ. J. Szöcs. 3 females: Tihany, southern shore, caught with Malaise-trap — II/2: 1 male: Aggtelek, Haragistya — VI/2: 1 female + 1 male (paralectotypes, in Budapest Museum, Hym. Typ. Nos 537538): Fonyód, leg. Szépligeti — V-IX, taken frequently in May. Microchelonus retusus (Nees, 1816) (= Chelonus caudatus Thomson, 1874; ?= Ch. emarginatus Herrich-Schaeffer, 1838) — Distributed in the Palaearctic Region, in Europe reported from eight countries (Shenefelt 1973: 898). In Hungary less frequent and, surprisingly, taken only male specimens. The majority of the specimens reported under the name M. retusus from the Hortobágy National Park (Papp 1983: 323) proved to represent, by their re-identification, the species M. caucasicus, see also there. — Localities: 1/1: 1 male: Debrecen. 1 male: Hortobágy. 4 males: Kunmadaras, Döghalom—II/l: 1 male: Budapest, Budafok. 1 male: Budapest, Gellérthegy. 1 male: Budapest, Tétényi-fennsík, 150 m, swept in Cleistogeno-Festucetum — III/l (Slovakia): 1 male: Királyhegy (= Piskorovce) — III/5 (Transylvania): 1 male: Dés, Királyárka (= Dej) — VI/1: 1 male: Pécs, Fehér-kút. 2 males: Pécs, Misina — V-VII. Microchelonus risorius (Reinhard, 1867) (= Chelonus fissus Szépligeti, 1900, nec Provancher, 1881; = M. magnifissus Tobias, 1986, nom. n. for Ch. fissus Szépligeti) — Distributed in the western Palaearctic Region. Similar to M. retusus taken only males in Hungary so far. In Hungary rather sporadic. — Localities: 1/1: 1 male: Bugac, Nagybugac. 1 male: Csömör. 3 males: Hortobágy, Zám. 1 male: Vácduka, Csörög — II/l: 2 males: Balatonudvari. 1 male: Budapest, Zugliget. 1 male (holotype of Ch. fissus Szépligeti, in Budapest Museum, Hym. Typ. No. 512): Pilismarót, 13 August 1895 (not "19 May 1899" as in Szépligeti 1900: 215) — VI/2: 1 male: Somogyaszaló — V and VII-IX. Microchelonus rostratus (Tobias, 1966) — Widely distributed in the western half of the former USSR (Tobias 1986a: 323). First reported from the Hortobágy National Park in Hungary (Papp 1983: 323). — Localities: 1/1: 1 female: Gyoma. 5 females + 2 males: Hortobágy, Zám. 5 females + 1 male: Kunmadaras, Döghalom. 1 female: Nagyiván, taken from Carduus sp. 1 female: Őrbottyán: Őrszentmiklós. 1 female: Újszentmargita, swept in Artemisio-Festucetum pseudovinae — II/l: 2 females: Budapest, Gellérthegy. 3 females: Érd, Szidónia-hegy — II/2: 2 females + 1 male: Kóspallag, Kis-Inóc — V-VII.