2,892 research outputs found

    Data on the terrestrial Isopoda fauna of the Alsó-hegy, Aggtelek National Park, Hungary

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    Field surveys in dolines of Alsó-hegy, Aggtelek Karst (Hungary) yielded 10 terrestrial isopod species. Despite of the relatively low species richness, we would like to emphasize the high naturalness of the area indicated by the presence of endemic and rare species

    Terrestrial Isopods (Isopoda: Oniscidea) of Wisconsin

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    Eleven species of terrestrial isopods are recorded from Wisconsin. Species treatments include morphological, habitat and life history data. Wisconsin county distribution records are presented

    The Terrestrial Isopod \u3ci\u3eHyloniscus Riparius\u3c/i\u3e (Isopoda: Oniscidea: Trichoniscidae) in Wisconsin

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    We examined seasonal reproductive patterns for the terrestrial isopod Hyloniscus riparius in Wisconsin. Samples collected from habitats in three Wisconsin regions were compared with regard to the reproductive status of population members. We also recorded differences in sex ratio and stage of female gravidity in all samples. Males were a minority in all samples. Southern samples showed the greatest reproductive capacity based on the proportion of females that were found to be gravid

    Szárazföldi ászkarák együttesek (Crustacea: Isopoda: Oniscidea) a magyarországi autópályák szegélyzónájában

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    Magyarországi autópályák szegély él"helyein végeztünk ászkarák együttesekre irányuló vizsgálatokat, annak megválaszolása érdekében, hogy mely "shonos fajok tolerálják a pálya mentén uralkodó viszonyokat, milyen arányban jelennek meg tájidegen és invazív fajok, valamint van-e hasonlóság a nagyvárosok és az autópályák ászkarák faunája között. A 33 területen közel 200 talajcsapdával végzett mintavételezések során 12 ászkarák faj 15298 egyedét mutattuk ki a területekr"l. Dominánsnak bizonyult az invazív fajként ismert szürke gömbászka (Armadillidium vulgare), mely az összegyedszám 82!%-át tette ki. El"kerültek erdei fajok és egy behurcolt üvegházi faj, az üvegházi gömbászka (Armadillidium nasatum) is, melynek megjelenése ember általi széthurcolásra utalhat. A városok ászkafaunájához hasonlóan számos "shonos, generalista és kozmopolita faj is igazolható volt az autópálya szegélyekben. Jelen dolgozatban a begy#jtött fajok dominancia viszonyait és felszíni aktivitásuk alakulását mutatjuk be

    Hazai szárazföldi ászkarákfajok (Isopoda, Oniscidea) tipizálása két nagyváros, Budapest és Baltimore (ÉK Amerika) összehasonlításának példájával

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    Munkánkban kísérletet tettünk az ászkarákfajok természetvédelmi szempontú felosztására jellemző élőhelyük és elterjedési adataik alapján. Kategóriáink: természetközeli élőhelyeken élő NR („natural-rare”), kis abundanciával jellemezhető fajok; NF („natural-frequent”) természetközeli élőhelyeken, gyakori fajok; DR („disturbed-rare”) – zavart élőhelyeken, kis egyedszámban előfordulók; DF („disturbed- frequent”) – antropogén habitatok nagy abundanciájú, rendszerint szünantróp fajai; G („generalist”) – minden típusú élőhelyen előfordulható fajok; U („uncertain”) – kevés adat miatt nem tipizálhatóak. Ezen beosztás alapján az utóbbi években faunánkra újként kimutatott fajok kétharmada a DR kategóriába tartozik, ami az idegen faunaelemek felgyorsult betelepülését, a biodiverzitás homogenizálódó tendenciáját igazolja. Baltimore (ÉK Amerika) és Budapest Isopoda faunáját összevető esettanulmányunkban kimutattuk, hogy míg a vizsgált tengeren túli fauna 11 behurcolt fajból áll, addig Budapesten összesen 27 fajból, aminek 33%-a betelepült

    Woodlice (Isopoda: Oniscidea) and the centipede Scutigera coleoptrata (Chilopoda) collected from Hungary by the British Myriapod Group in 1994:

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    Twenty-seven species of woodlice are recorded from Hungary in 1994 during a joint collecting trip undertaken by the British Myriapod Group and Hungarian experts. Five species, Armadillidium vulgare (LATREILLE, 1804), Protracheoniscus politus (C. KOCH, 1841), Trachelipus rathkii (BRANDT, 1833), Platyarthrus hoffmannseggii BRANDT, 1833 and Trachelipus nodulosus (C.KOCH, 1838), were widely recorded and accounted for 48% of the 1,200 specimens collected. The first Hungarian record of Trichoniscus provisorius RACOVITZA, 1908 is given. Records of the apparently rare species, including Trichoniscus steinboecki VERHOEFF, 1931, Hyloniscus vividus (C. KOCH, 1841), Haplophthalmus montivagus VERHOEFF, 1941 and Lepidoniscus minutus (C. KOCH, 1838) are presented for semi-natural habitats. It is suggested that some of these species, particularly H. montivagus, may have been over looked and consequently may be under recorded. Other apparently rare species, including Androniscus roseus (C. KOCH, 1838), Oniscus asellus Linnaeus, 1758, Porcellio spinicornis SAY, 1818 and Armadillidium nasatum BUDDE-LUND, 1885 are recorded from synanthropic sites. The potential value of synanthropic habitats for Oniscidea is highlighted. A record for the centipede, Scutigera coleoptrata LINNAEUS, 1758 is given

    Distribution of Terrestrial Isopods (Crustacea: Isopoda) Throughout Michigan: Early Results

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    Results are reported from the first two years of a multi-year study on the distribution of terrestrial isopods (Crustacea: Isopoda) in Michigan. During the first year of the study (1997), intensive investigations were carried out us­ing pitfall traps in a small area of Midland, MI. The study was resumed in 2001 with opportunistic collection and hand-sorting of litter samples for terrestrial isopods throughout 30 Michigan counties. As a result of this data collection, the species Haplophthalmus danicus, previously unrecorded in the state, has been located in seven counties, and 83 new county records have been established for eight other terrestrial isopod species in Michigan. In particular, this study adds extensively to distributional knowledge for four species so far: Hyloniscus riparius, Trichoniscus pusillus, Oniscus asellus, and Armadillidium vulgare. Another species, Armadillidium nasatum, previously reported only inside greenhouses in three somewhat southern locations in the state, was found as clearly well-established outdoor populations in two additional counties further north. Habitat/microhabitat information is presented for all species

    A new genus of the millipede tribe Brachyiulini (Diplopoda: Julida: Julidae) from the Aegean region

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    A new genus of the julid tribe Brachyiulini, Enghophyllum gen. nov., is described, comprising two species from Greece. The type-species, E. naxium (Verhoeff, 1901) comb. nov. (ex Megaphyllum Verhoeff, 1894), appears to be rather widespread in the Aegean: it is known from Antiparos Island and Naxos Island (the type locality), both in the Cyclades, as well as East Mavri Islet, Dodecanese Archipelago (new record). The vulva of E. naxium is described for the first time. In addition, E. sifnium gen. et sp. nov. is described based on a single adult male from Sifnos Island, Cyclades. The new genus is distinct from other genera of the Brachyiulini mainly by its peculiar gonopod structure, apparently disjunct and at least mostly apomorphous: (1) promeres broad, shield-like, in situ protruding mostly posteriad, completely covering the opisthomeres and gonopodal sinus; (2) transverse muscles and coxal apodemes of promere fully reduced; (3) opisthomere with three differentiated processes, i.e., lateral, basal posterior and apical posterior; (4) solenomere rather simple, tubular. The evolution and biogeography of the new genus are briefly discussed, both suggesting its profoundly long isolation in the Aegean region from the contribal genera in the adjacent Balkans and Anatolia

    Student News

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    Calyptrates are a megadiverse, actively radiating, group of dipterans, which are widely spread and abundant in nearly all terrestrial environments. Despite huge diversity and economic importance, their phylogeny is far from resolved. Recent attempts employing few taxa seem converging in retrieving monophyly for most of the families and subfamilies, but deep relationships among these, especially for those of the oestroid clade (blow flies and relatives), are labile when not changing. The goal of the present project is to shed some light on the deep phylogenetic relationships among Calyptratae by using an anchored hybridization approach with a careful taxon sampling. Furthermore, we aim at resolving the generic phylogeny of two key families of parasitoid flies: Rhinophoridae and Polleniidae. Rhinophorids are interesting because of their peculiar parasitoid habit: they are the only insects having exploited crustaceans (Crustacea, Isopoda, Oniscidea) as hosts. Moreover, adult rhinophorids are difficult to recognize from other oestroids due to the lack of autapomorphies. Differently, however, the preimaginal instars present sound autapomorphies. Notwithstanding the several phylogenetic investigations conducted so far, the phylogenetic position of the rhinophorids is ambiguous and there is an impelling need of improving both taxon sampling and sequence data in order to gain a better resolution. In turn, the phylogenetic position of the polleniids as sister group of the Tachinidae is becoming consensus recently, but the phylogenetic relationships within the family are still unknown. In conclusion we aim to reconstruct a solid phylogeny of these groups in order to build up a stable and predictive classification of the Oestroidea
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