Kvadráty: 6052 6051 6050 5951 5852
  Records by time
Zodariidae 0-19001901-19501951-20002001-2021
Zodarion italicum (Canestrini, 1868) Not endangered 2x 13x 15x

Zodarion italicum (Canestrini, 1868)

Czech namemravčík italský
Threat levelNot endangered
Records15 nálezů, 5 kvadrátů
First record 2000, M. Řezáč, Řezáč 2002
Last record 2019 , Ondřej Machač
Distribution areaEuropean - Me. [Boh.]
Phytogeographic areaThermo
Původnost stanovišťclimax
Humidityvery dry
StratumGround layer
Osvětlení stanovišťopen
Hojnost výskytuvery rare
Altitude200

Bibliography

© Ondřej Machač
Based on morphological characters, two species of the genus Zodarion, Z. hamatum and Zodarion italicum, were placed into the italicum group. The aim of this study was to evaluate similarity of these two species in respect of various aspects of their natural history and karyotypes. Both species had similar phenological patterns, being univoltine, but some specimens reached adulthood the same year before winter. Both representatives had nocturnal activity and were able to capture various ant species. Zodarion hamatum seems to be specialized on Myrmicinae ants, and Zodarion italicum on Formicinae ants. Zodarion hamatum showed more agile predatory behaviour than Zodarion italicum presumably due to specialization on Myrmicinae ants, which have lower population density. Both species are generalized mimics of bicoloured (orange-dark brown) ants, such as Lasius emarginatus; they performed similar courtship and mating. The two study species exhibited contrasting reproductive strategies. Zodarion hamatum spiders had higher fecundity than Zodarion italicum as a result of larger body size but Zodarion italicum had larger eggs than Z. hamatum. This is presumably an adaptation to different availability of prey ants. Both species had the same diploid chromosome number, sex chromosome system and pattern of X chromosome heteropycnosis in testes. Results support a very close relationship between these two Zodarion species.


Statistics

By month


By altitude


By collecting method (14 used records)
Zodarion italicum (Canestrini, 1868) ESMalesFemalesJuvenilesRecords
Individuální sběr3302
Zemní past6862010
Smyk6402
 MalesFemalesJuvenilesRecords

By biotope (2 used records)
Zodarion italicum (Canestrini, 1868) ESMalesFemalesJuvenilesRecords
Skalní stepi na vápencových podkladech1001
Xerotermní travinobylinná společenstva2301
 MalesFemalesJuvenilesRecords