Matskási István (szerk.): A Magyar Természettudományi Múzeum évkönyve 93. (Budapest 2001)

Csősz, S.: Taxonomical and distributional notes on two new and a rare Leptothorax Mayr, 1855 species for the Hungarian ant fauna (Hymenoptera, Formicidae)

Distribution -The specimens were collected at dolomite and limestone sites, the plant coverage was dense, and the stony surface were densely covered by mosses. L. sordiduius saxonicus is a Mediterranean-Sub-mediterranean subspecies which has been reported from European part of Turkey (AGOSTI & COLLINGWOOD 1987a) and Yugoslavia (AGOSTI & COLLINGWOOD 1987a, PETROV 2001). According to SEIFERT (1995, 1996) L. sordiduius saxonicus has a southern Balkanian refuge, and occurs in Austria, Slovakia, Moravia, Bohemia, Saxony and Bavaria. Leptothorax gredleri MAYR, 1855 (Figs 3-5) Leptothorax gredleriMAYR, 1855, Verhandlungen der Zoologisch-botanischen Vereins in Wien 5: 438 Leptothorax muscorum var. gredleriMAYR: STITZ 1939: 163. Leptothorax gredleriMAYR: BARONI-URBANI: 1971: 98. Material examined - 3 workers, Hungary, Aggtelek National Park, Jósvafő, 06.1997, leg. MOLNÁR; 4 workers, Hungary, Tabdi, 11.05.1977, leg. ÁDÁM (HNHM); 5 workers, Hungary, Aggtelek National Park, Jósvafő, 18.06.1998, leg. TARTALLY & CSŐSZ; 1 queen, Jósvafő, Aggtelek National Park, Hungary, 06.1997. leg: MOLNÁR. Metrical data of 12 L. gredleri workers: HL: 709, HW: 637, SL: 467, ML-spin: 892, ML-lobus: 863, CI: 1,11, SL/HL: 0.73. Metrical data of the L. gredleri queen: HL: 720, HW: 635, SL: 450, ML-spin: 980, ML-lobus: 1000, Cl: 1,13, SL/HL: 0.625. Description - Antennae with 11 segments, antenna! club always as pale as rest of funiculus. Antennái scapes and tibiae with decumbent pilosity only. Central part of clypeus between two longitudinal carinae entirely smooth and shining, without striae. Propodeal teeth short and straight. Frontal and dorsal surface of petiole meeting in angle at apex in lateral view. Ventral surface of petiole with well-visible convex edge. Dorsum of head ochraceous-yellow to yellowish brown. Alitrunk yellowish-brown. Notes - Leptothorax gredleri is closely related to L. muscorum (NYLANDER, 1846), but the two species are not so difficult to distinguish morphologically. Both species have been reported from Hungary. KUTTER (1977) gives a reliable key and description for the separation of these two species based on the shape of their petiole (Figs 3-4). BUSCHINGER (1966) gives a more reliable key of the median part of clypeus, which is always smooth and shiny at L. gredleri (Fig. 5), while the medial part of clypeus of L. muscorum (NYLANDER) is always with short striae. SEIFERT ( 1996) proposes a new character based on the ratio of scapus and head length. The