|Red List Category & Criteria:
||Samraoui, B., Schneider, W. (Freshwater Biodiversity Assessment Workshop, Oct. 2007) & Pollock, C.M. (IUCN Red List Unit)
Cordulegaster helladica is endemic to southern Greece (Boudot 2001). The nominal subspecies reproduces in 49 streams (separate locations overall, but some are now extinct) and remains fairly flourishing in the Peloponnesus and Euboea (Evvoia) island, although some populations seem to have been reduced or have even disappeared from some localities. Cordulegaster helladica buchholzi is known only from seven streams in the Cyclades Islands and is known over about 820 km² only. Some of the old known localities have been recently found to be dry and deserted. Cordulegaster helladica kastalia is known to reproduce only in a single and very touristy place over about 0.2 km² (the preserved sacred spring of Delphi and related brook). The differentiation of several subspecies or local forms reflect the isolation of the various groups of populations and the ancient lack or weakness of gene interchange between them, particularly between those of the Cyclades islands and those of the continent, but also between some different continental ones.
There are likely to be problems of erosion in the Peloponnesus part of its range. Recent drought conditions have also resulted in some sites being lost and there is increased risk of effective forest fires in the area. In the past 10 years it is highly likely that the population has declined by at least 50% based on observed reduction of sites and continued habitat degradation. The future threat of increasing drought through changing climatic conditions is expected to result in a future decline of 50%. The area of occupancy is also likely to be less than 500 km². With the population severely fragmented and declining range, populations and habitat quality, the species is assessed as Endangered
|Previously published Red List assessments:|