Die Gallmueckenfauna (Cecidomyiidae, Diptera) Suedtirols (2) : Gallmuecken des Nationalparks Stilfser Joch und der Gadertaler-Dolomiten

Skuhrava, M.; Skuhravy, V.; Hellrigl, K.

Gredleriana 2: 103-136


Accession: 010457834

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During investigations in South Tyrol 16-27 July 2001, 65 gall midge species were found at 9 localities situated in subalpine, alpine and subnivale zones, at altitudes from 1818 m a.s.l. at Lech da Le (Dolomites Alps) up to 2581 m a.s.l. in the Ortler Alps (National Park Stilfser Joch). Of these, 17 species are new records for Italy and another 6 species, known from other areas of Italy, are new records for the Province of Bolzano-South Tyrol (Alto Adige). The present gall midge fauna of Italy includes now 397 species and the present fauna of South Tyrol includes 151 species. In addition, galls of 15 undescribed species were discovered: 1 species of Arthrocnodax, 2 species of Contarinia, 9 species of Dasineura and 3 species of Rabdophaga. An annotated list of gall midge species found in South Tyrol in 2001 is given. For each species, collection sites together with biological data are given. New records for Italy are indicated by two asterisks (*) before the species name, new records for South Tyrol by one asterisk (). A list of host plant species attacked by gall midges is given. Of these, more than one half of the species are alpine and subalpine. Gall midge species associated with Salix use for their development in subalpine and alpine zones other Salix spp. than they use in lowlands. The zoogeographically interesting species are: Jaapiella antennariae, larvae of which develop in flower buds of Antennaria dioica, is a Euro-Siberian, subalpine and alpine species with disjunct distribution. Rhopalomyia astericola, larvae of which cause spongy galls at the stem base of Aster alpinus, is a Euro-Siberian, alpine species with disjunct distribution. Dasineura berti, larvae of which live in folded leaflets of Astragalus alpinus, is a European, alpine and boreal species with disjunct area of distribution. Dasineura bistortae, larvae of which cause rolled leaf margins on Polygonum spp., is a Euro-Siberian, subalpine and alpine species with disjunct distribution. Jaapiella vacciniorum, larvae of which cause galls on vegetative tips of Vaccinium myrtilus, is a European, boreal and subalpine species. Hygrodiplosis vaccinii, larvae of which cause leaf rolls on Vaccinium uliginosum, is a European, sub-boreal and boreal, subalpine, alpine and subnival species. Contarinia sp., larvae of which live in slight depressions on the underside of the leaf of Vaccinium uliginosum, is probably a Holarctic, alpine species, which occurs at high altitudes in Central Europe and in the most western part of North America. Myricomyia mediterranea reaches the southern slopes of the Alps in South Tyrol, the most northern limit of its distribution area