S. Mahunka szerk.: Folia Entomologica Hungarica 61. (Budapest, 2000)

tooth of the mucro as large as the apical tooth. The mucronal spine reaches the tip of the subapical tooth (Fig. 14). Chaetotaxy: Dorsal macrochaetae i?00

1/00/0101+2. Seta p on abd. II absent: a-Bq

1

q

2 (Fig. 8). Lateral macrochaetae on abd. Ill: A

t

, P

y (Fig. 6, Fig. 9) Macrochaetae on abd. IV: dßßJDVIJJJL^JE^, with£, inserted behind L

2 (symbols as in Hüther 1971) (Fig. 7). Anterior bothriotrichal complex of abd. IV without supplementary seta s (Fig. 10). Type material — Holotype (female) is deposited in the Hungarian Natural History Museum, Budapest, ten paratypes (in alcohol) in the collection of the author. Five paratypes are deposited in the collection of E. Christian (Vienna): Hungary, Mexikópuszta (Fertőújlak), Borsodi-dülő, com. Györ-Moson-Sopron. Cultivated medow close to the SE shore of Lake Fertő (Neusiedlersee). About 50 specimens leg. Gy. Traser et G. Takács, pitfall traps 25.03-16.04.1999. Other material — Rábatamási, Szabad-Hany, poplar forest, 3 specimens leg. László Kárpáti and György Traser, 21.05.1997. Mexikópuszta, Cikes, extensive meadow, 4 spp. leg. Anett Winkler and Gy. Traser, 09.04.1999. Mexikópuszta, Borsodi-dülő, 10 spp. leg. Gy. Traser and Gábor Takács, 30.04.-14.05.1999 (pitfall traps). Kapuvár, Csíkos-éger, alder (Alnus glutinosä) forest, 4 spp. leg. Julianna Hanus and Gy. Traser, 16.04.1999. Hegyeshalom, pine (Pinus sylvestris) forest, 4 spp. leg. Gy. Traser, 15.07.1999. ECOLOGY AND BIOLOGY Males and females are known. Most specimens collected in March/April were praeadults. L. arrabonicus was especially abundant in pitfall traps on a cultivated meadow in March and April, accompanied by L. paradoxus, L. peisonis, Orchesella cincta, Isotoma viridis, Isotomurus palustris and Hypogastrura cf. succinea. Derivatio nominis — Lepidocyrtus arrabonicus sp. n. was collected in the "Little Hungarian Plain", tenned "Arrabona" by Pliny. DISCUSSION Lepidocyrtus arrabonicus sp. n. is distinguished from the closely related Lepidocyrtus weidneri Hüther, 1971 by the lateral bothriotrichal complex of abd. Ill and the absence of seta T on the head and seta p on abd. II. In L. arrabonicus the lateral seta E

i on abd. IV is a macrochaeta, while e

x is a microchaeta in L. weidneri. The new species differs from L. pallidus Reuter, 1892 (sensu Gisin 1965 and Hüther 1971) by the same characters exept the lateral seta E

x

, and by the vestigial or absent labial seta r in L. pallidus. L. szeptyckii Rusek, 1985 has scales on ant. I and II, distinctly different labral papillae, and a different chaetotaxy of abd. III. Other related species are distinguished from L. arrabonicus by the following characters (according to Gisin 1964a, b, 1965, 1967): L. serbicus Denis, 1941 (chaetotaxy of abd. IV: 1+3); L. pseudosinelloides Gisin, 1967 (supplementary seta s present, basal teeth at 37% of the unguis); L. cyaneus Tullberg, 1871 (setae S and J

1 present); L. violaceus Lubbock, 1873 (chaetotaxy of abd. IV: 1+3). Acknowledgements — Many thanks are due to Prof. Erhard Christian (Vienna) for his assistance, and to Dr. László Kárpáti (chief-director of the Fertő-Hanság National Park) and Gábor Takács who kindly supported the study of the Collembola fauna in the National Park area.