IDF-Report : newsletter of the International Dragonfly Fund
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131
Survey in three protected areas of Chhattisgarh reveals the presence of 50 species of Odonata belonging to 34 genera and 9 families. Specimens were sampled from different lotic and lentic ecosystems. 17 species were exclusively found in or around running water. Larvae or exuviae of 23 species were found and photographed. Habitat availability, larval abundance, species composition and phenology are discussed.
102
DragonflyIndia Meet 2016
(2017)
33
During three field trips in 2006 and 2010 to Cuc Phuong National Park in northern Vietnam, a total of 19 anisopteran taxa was recorded. The most interesting records are documented here with field photographs of living specimens or collection material. Observations on their biology and behaviour are also noted.
36
First records for Vietnam of Fukienogomphus promineusChao, 1954 and Gomphidia abbotti Williamson, 1908 are documented with emphasis on morphological details. The previously published record of Sieboldius gigas(Martin, 1904) in Do et al. (2011) has to be corrected into Megalogomphus sommeri (Selys, 1854).
163
Im Jahr 2019 wurde ein etwa 500 m langer Abschnitt der Trattnach in Schlüßlberg (Bundesland Oberösterreich) restrukturiert. Ziel der libellenkundlichen Untersuchungen in den Jahren 2016 und 2021 war die Bewertung dieser ökologischen Aufwertung durch ein Prae- und ein Post-Monitoring. Die Verbesserungsmaßnahmen führten zu einer Verdopplung der Artengesamtzahl (von fünf auf zehn) und der Zahl der sicher, wahrscheinlich und möglicherweise bodenständigen Arten (von vier auf acht). Es konnten im Jahr 2021 vier der fünf gewässertyp-spezifischen Leitarten nachgewiesen werden: Calopteryx splendens, Calopteryx virgo, Gomphus vulgatissimus und Onychogomphus forcipatus. Das bodenständige Vorkommen dieser Arten bestätigt den hyporhithral/epipotamalen Übergangscharakter der Trattnach in diesem Bereich und indiziert die Ausprägung von geeigneten Strömungs- und Substratverhältnissen sowie von entsprechenden Vegetationsverhältnissen im Uferbereich. Durch die wasserbaulichen Eingriffe wurden insbesondere die rheophilen Spezies gefördert, limnophile Begleitarten waren nur vereinzelt nachzuweisen. Grund dafür ist der weiterhin in überwiegendem Maß gestreckte Verlauf des Flusses und das damit verbundene weitgehende Fehlen lenitischer Bereiche.
Die Funde von Exuvien und Sichtungen frisch emergierter Individuen von G. vulgatissimus und O. forcipatus belegen, dass das Gewässer unmittelbar nach Fertigstellung der Bauarbeiten von diesen Arten mit zweijähriger Entwicklungszeit besiedelt wurde. Die Bewertung des libellen-ökologischen Zustandes basierte auf der Berechnung des Odonata-Fließgewässer-Zonations-Index, in dem allfällige Abweichungen des aktuellen Odonatafauna von einem gewässertyp-spezifischen Referenzzustand (Klasse 1, „sehr guter libellen-ökologischer Zustand“) verrechnet werden. Das Ergebnis ist die Grundlage für die Einstufung in eine der fünf Klassen des ökologischen Zustandes gemäß EU Wasserrahmenrichtlinie. Die Restrukturierungen führten zu einer Verbesserung der libellen-ökologischen Zustandes: der betroffene Abschnitt (vormals Klasse 3, „mäßig“) wurde genauso wie die drei darin liegenden Einzelstrecken (vormals Klassen 4, „unbefriedigend“, und 3, „mäßig“) mit „gut“ (Klasse 2) bewertet. Auch der libellen-ökologische Zustand einer von den Aufwertungsmaßnahmen nicht betroffenen regulierten und in beiden Jahren kartierten oberstromig liegenden Kontrollstrecke veränderte sich von „unbefriedigend“ auf „mäßig“. Aus dem Restrukturierungsbereich wirkende Strahleffekte dürften für diese Verbesserung verantwortlich sein.
144
We report here the results from field trips to collect Odonata in the northeastern parts of Kelantan state and the north of Terengganu state, Peninsular Malaysia. Eighty four species were collected, and four of these are new records for the state Kelantan and 10 are new records for the state of Terengganu. Notable records obtained from the field trips were Euphaea masoni, Coeliccia sameerae, Pseudagrion ?lalakense, Leptogomphus tioman and Macromia cupricincta. Checklists for Kelantan (140 species) and Terengganu (132 species) are given in an appendix.
12
In July 2005, Rafal Bernard requested Oleg Kosterin to collect some samples of Nehalennia speciosa from West Siberia for a DNA analysis. Oleg replied that so far he had only seen one individual of this species 25 years ago, but asked in which habitats it should be sought for exactly. Rafal sent him a draft of his paper (Bernard & Wildermuth, 2005) devoted to this subject. Having read it, Oleg came to the conclusion that this habitat (shallow water with Sphagnum and Carex limosa or C. lasiocarpa) might occupy the largest area in the world just in the boggy West Siberian Plain. Personal consultation with the geobotanist Dr. Nikolai Lashchinskii confirmed this notion. Then an almost automatic supposition followed that this area may serve as the main reservoir of N. speciosa, considered a local and endangered species in Western and Central Europe. At the same time, the existing records of N. speciosa from West Siberia were remarkably scarce. It was known from the Khanty-Mansi Autonomous Region (basins of the Tura and Konda Rivers), a small number of records from North Altai and adjacent areas north of it, a record from the steppe zone of Novosibirsk Province (Karasuk), a record in the basin of the Tuba River (Krasnoyarskii Krai), and a dubious old record from Omsk (see the map in Belyshev (1973) and a review in Bernard & Wildermuth (2005)). There was no record from the boggy Irtysh-Ob’ interfluve, where we would expect the species to flourish. This could be explained by the lack of attention by odonatologists to that interesting area. In these circumstances, the project of a special expedition(-s) was put forward, aimed to check the presence, pattern of distribution, abundance and habitat preferences of N. speciosa in these areas. For a decisive expedition we chose the Vasyugan Bog, the largest bog in the world, more precisely its north-eastern margin where we could find a good base in Plotnikovo village, Bakchar District, Tomsk Province.
46
On 13 July 2010, in a woodland near the village of Verin Khotanan, Armenia, five males of Cordulegaster vanbrinkae were captured. These specimens are documented, compared with the holotype from Iran and discussed in detail. The current protection situation of this species in Armenia is briefly commented. In addition, the locus typicus information of the holotype from Iran is corrected and detailed.
75
We compared Chatham Island endemic species Xanthocnemis tuanuii to its congenerics from the New Zealand South Island: X. zealandica (newly collected specimens)and X. sinclairi (type specimens plus newly collected material). Two independent tests were performed –geometric morphometrics and molecular. Both analyses were consistent in supporting the status of X. tuanuiias a good species. Species differed statistically in the following morphological traits: head (dorsal view), male appendages (dorsal, lateral, posterior and ventral views), thorax (dorsal view), and penis (dorsal and lateral view). In addition to the original diagnostic features (mainly shape of the male superior appendages), a new morphological character is suggested here which reliably distinguishes the species based on the shape of the inferior appendages. There was no statistical support for the species status of X. sinclairi. The only feature re-ported as diagnostic (lower lobe of male superior appendages) was found to be variable and insufficient to warrant the previously proposed taxonomic rank for X. sinclairi. Molecular analysis of specimens showing identical appendages to the X. sinclairi holotype grouped them with X. zealandica specimens. Therefore X. sinclairi is synonymised with X. zealandica.
2
Contents : KLAUS REINHARDT : Aspects of the dragonfly fauna of eastern Kazakstan, MARTIN SCHORR : Bilder aus dem Leben des Odonatologen Dr. Erich Schmidt (1890 - 1969), Rechenschaftsbericht über das Geschäftsjahr 1999