Short Communication |
Corresponding author: Michael Steinwandter ( michael.steinwandter@eurac.edu ) Academic editor: Michele Freppaz
© 2019 Michael Steinwandter, Manfred Kahlen, Ulrike Tappeiner, Julia Seeber.
This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Citation:
Steinwandter M, Kahlen M, Tappeiner U, Seeber J (2019) First records of Opetiopalpus sabulosus Motschulsky, 1840 (Coleoptera, Cleridae) for the European Alps. In: Mazzocchi MG, Capotondi L, Freppaz M, Lugliè A, Campanaro A (Eds) Italian Long-Term Ecological Research for understanding ecosystem diversity and functioning. Case studies from aquatic, terrestrial and transitional domains. Nature Conservation 34: 119-125. https://doi.org/10.3897/natureconservation.34.30030
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The genus Opetiopalpus from the family of checkered beetles (Coleoptera: Cleridae) is represented by 28 species worldwide, with 11 species found in the Palearctic and only four sparsely in Europe prior to 1998. One species, Opetiopalpus sabulosus Motschulsky, 1840, was recently found in Eastern Europe (i.e. Ukraine, Bulgaria, and Moldavia), with the most recent record in 2015 in Eastern Romania; no data are available for Central Europe. During a comprehensive sampling survey in 2016 in the dry inner-Alpine Vinschgau Valley (South Tyrol, Italy), one individual of O. sabulosus was recorded from soil core samples on an extensively managed steppe-like dry pasture at 2000 m a.s.l. This was the first record of O. sabulosus for the European Alps and Central Europe. Further intensive samplings were conducted in 2017 and 2018, in which one additional specimen at a dry pasture at 2500 m confirms the presence of this checkered beetle. Opetiopalpus sabulosus seems to have a cryptic lifestyle and therefore a low detection probability. The locations from where the species was recorded, all steppe-like dry grasslands that are part of the LTSER area “Val Mazia/Matschertal” within the LTER-Italia network, are characterized by low precipitation (730 mm at 2000 m a.s.l.) and traditional low input management (grazing cattle, sheep, and horses). Beside O. sabulosus, other rare and new species for South Tyrol and Italy were found at the sampling area. Therefore, our records underline the high biodiversity and the high nature conservational value of these steppe-like dry grasslands and the importance of long-term research to monitor such species.
new report, checkered beetles, Alpine grassland, dry pasture, LTER_EU_IT_097, LTER-Italia
Cleridae are characterized as colorful, hairy beetles that are either predacious (especially on wood-boring or carrion-visiting insects) or flower visitors (
A comprehensive biodiversity study was conducted in 2016 at the “Muntatschinig” site in the Alpine Long-Term Socio-Economic Research (LTSER) platform “Val Mazia/Matschertal”, a member of the national and international long-term ecological research networks LTER-Italy, LTER Europe, and ILTER (Vinschgau Valley, South Tyrol, Italy; site code LTER_EU_IT_097; 46°41.647'N; 10°37.029'E). For more details see
Aerial photograph of the upper “Muntatschinig” site in the LTSER area “Val Mazia/Matschertal” with the samplings from 2016 to 2018. The orange frames depict the Opetiopalpus sabulosus Motschulsky, 1840 (Coleoptera: Cleridae) sampling areas, hexagons the locations of permanent monitoring sites (e.g. L1500: Larch forests at 1500 m a.s.l., H1500: hay meadows, S1500: Spruce forests, P2000: dry pastures at 2000 m, etc.).
Three soil core samples each (20 × 20 cm, 15 cm deep if possible) were taken randomly and evenly distributed at the extensively managed dry pastures P2000 (mean soil parameters: pH 4.47 ± 0.13, SOM 14.66 ± 2.27, C:N ratio 13.40 ± 0.98) and P2500 (pH 4.30 ± 0.30, SOM 15.99 ± 3.08, C:N ratio 12.81 ± 1.22) at four dates from April to October 2016 (Table
List of samplings and methods at the “Muntatschinig” site in the LTSER area “Val Mazia/Matschertal” to find Opetiopalpus sabulosus Motschulsky, 1840 (Coleoptera: Cleridae). The sampling areas include steppe-like dry pastures at different elevations (e.g. P2000_1 represents plot number one of dry pastures P at approximately 2000 m a.s.l.) as well as summit areas. Details for each sampling date are given.
Date | Method | Sampling plots | Details |
---|---|---|---|
04.05.2016 | soil cores | P2000_1-3, P2500_1-3 | 3 per plot |
26.06.2016 | pitfall traps | P2000_1-3, P2500_2 | 2 per plot, active for 14 days |
30.06.2016 | soil cores | P2000_1-3, P2500_1-3 | 3 per plot |
31.08.2016 | soil cores | P2000_1-3, P2500_1-3 | 3 per plot |
31.10.2016 | soil cores | P2000_1-3, P2500_1-3 | 3 per plot |
25.05.2017 | manual catches | P2000_1-2, P2500_2-3, Niederjoch, Spitzige Lun | hand-sampling, exhauster, sieving litter and lichens |
21.05.2018 | soil cores | P2500_2 | 3 per plot |
19.06.2018 | pitfall traps | P2500_2 | 3 per plot, active for 35 days |
19.06.2018 | soil cores | P2000_1-2 | 3 per plot |
16.07.2018 | pitfall traps | P2000_1-2 | 3 per plot, active for 27 days |
16.07.2018 | soil cores | P2000_1-2 | 3 per plot |
06.08.2018 | pitfall traps | P2000_1-2 | 3 per plot, active for 21 days |
06.08.2018 | soil cores | P2000_1-2 | 3 per plot |
03.09.2018 | pitfall traps | P2000_1-2 | 3 per plot, active for 28 days |
In late April 2017, the whole area around P2000_1, P2500_2, the “Spitzige Lun/Piz Lun” peak (2324 m), and the crest that ends in the “Niederjoch/Giogo Basso” peak (2474 m) was thoroughly investigated by hand collecting and litter sieving the shrub, grass, and lichen layers (Fig.
Two individuals of O. sabulosus Motschulsky, 1840 (Coleoptera: Cleridae) were found during all sampling attempts (Table
Photographs of the steppe-like dry pastures at the “Muntatschinig” site where Opetiopalpus sabulosus Motschulsky, 1840 was first recorded. The sites are part of the LTSER area “Val Mazia/Matschertal” at the research site “Muntatschinig” A P2000_1: photograph 2A was taken on 4th May 2016. In the background the “Spitzige Lun/Piz Lun” peak can be seen B P2500_2: photograph 2B was taken on 19th June 2018. The rocky “Niederjoch/Giogo Basso” peak can be seen in the left upper corner.
The first specimen was extracted from one P2000_1 soil core sample taken on 31st August 2016 (1 male, leg. Steinwandter M, det. Kahlen M, 46°42.184'N; 10°34.203'E, Table
Habitus of the first record of Opetiopalpus sabulosus Motschulsky, 1840. Multiple photographs were taken using a stereo microscope (Olympus ZX 10) and a camera (Panasonic Lumix GH4), and rendered with a focus stacking software (Helicon Focus version 6.0) by Andreas Eckelt. The specimen is stored in the collection of Manfred Kahlen at the “Tiroler Landesmuseen Betriebs G.m.b.H., Naturwissenschaftliche Sammlungen, Sammlungs- und Forschungszentrum in Hall in Tirol”, Tyrol, Austria.
A second specimen was found two years after the first record, in a pitfall trap from the 2018 sampling collected on 19th June 2018 at the P2500_2 site (1 adult, leg. & det. Steinwandter M, 46°42.168'N; 10°35.700'E, Table
The records on our P2000_1 and P2500_2 sites could indicate a small and cryptically living population adapted to inner-Alpine and steppe-like dry grasslands as well as rocky alpine landscapes. The fact that the specimens were found after two years underlines the presence of a small population of O. sabulosus in the LTSER area “Val Mazia/Matschertal” and excludes a serendipitous finding. The Vinschgau Valley represents one of the driest regions of the whole European Alps and the only dry valley of the Eastern Alps (
We will continue to survey these steppe-like grassland areas in the inner-Alpine dry Vinschgau Valley to monitor the population and to gather more information about distribution, ecology and faunistics of O. sabulosus. The LTSER area “Val Mazia/Matschertal has already yielded several findings of new arthropod species for South Tyrol and Italy (e.g.
The present work was made possible by the funding of the Province of Bozen/Bolzano – South Tyrol for the LTSER platform. We thank “Verein Tiroler Landesmuseum Ferdinandeum” for financial support, and Katherina Damisch, Laura Stefani, Michele Torresani, and Elia Guariento for the help during the sampling and laboratory work, as well as Andreas Eckelt for taking photographs of the specimen. We thank Petra Kranebitter for help with the biodiversity archive of the Nature Museum South Tyrol. We also thank Roland Gerstmeier for support in the identification of O. sabulosus. We thank the three reviewers for their most valuable comments and the editor for editing efforts. We further thank the committee of the LTER Italia network for organizing a special issue.