Records by time  
Agelenidae 0-19001901-19501951-20002001+
Eratigena agrestis Eratigena agrestis (Walckenaer, 1802) Not endangered 118× 50× 168×
Eratigena atrica Eratigena atrica (C. L. Koch, 1843) Not endangered 102× 56× 161×

Bibliography

 © Oto Zimmermann
Žižiavka obyčajná (Porcellio scaber) patrí spolu s ostatnými suchozemskými rovnakonôžkami k najdôležitejším rozkladačom organickej hmoty, čím výrazne pozitívne vplýva na pôdotvorný proces. Ako obyvateľ pôdy je súčasťou edafickej potravovej siete. V tejto práci boli skúmané interakcie troch typov predátorov (kútnik, stonôžka a bystruška) so žižiavkou obyčajnou. Predátorom najčastejšie loviacim rovnakonôžku bol kútnik tmavý (45 %, F 3,275 = 3,027, p = 0,061). Stonôžky v laboratórnych podmienkach neprejavovali veľký záujem o túto korisť (17 %) a bystrušky ju lovili ešte menej (7 %). Iný druh potravy bystrušky konzumovali značne ochotnejšie (50 %, F 4,351 = 6,385 p = 0,020). Žižiavka bola výrazne najmenej aktívna pri kútnikovi (F 3,102 = 66,866, p < 0,001), no nízka aktivita nebola zaznamenaná pri pokusoch s ostatnými dvoma predátormi. Sledované boli tiež behaviorálne prejavy živočíchov pri vzájomnom stretnutí.

 © Oto Zimmermann

A few specimens (both adults and larvae) of the arachnophilous stilt bug Metacanthus annulosus Fieber, 1859 were found in a web of the giant house spider Eratigena atrica (C. L. Koch, 1843) in Brno (Czech Republic). This is the first host record, and confirmation of the species’ arachnophily, in Central Europe.

Metacanthus (Cardopostethus) annulosus Fieber, 1859 is a rarely collected species of stilt bug (Hemiptera: Heteroptera: Berytidae), distributed in the Mediterranean region and the Pannonian Basin (Péricart 2001,  Morkel 2007, Vašíček et al. 2018). It is an arachnophilous species living in spider webs, where it feeds on trapped arthropods (Štys et al. 2003, Morkel 2007). So far, these stilt bugs have been found in the funnel-webs of spiders of the genus Agelena (Araneae: Agelenidae). In eastern parts of the Mediterranean area (Anatolia, the Cyclades) the host spider was identified as Agelena orientalis (Štys et al. 2003, Morkel 2007). Agelena orientalis does not occur in Croatia (Nentwig et al. 2018), where M. annulosus was found in the webs of another, still unidentified, species of Agelena s. lat. (Vašíček et al. 2018). In Central Europe, M. annulosus has so far only been collected very rarely, and details of its ecology have been largely unknown (Rabitsch 2004, 2009, Vašíček et al. 2018).



Gallery

Statistics

By month


By altitude


By collecting method (328 used records)
NeurčenoMalesFemalesJuvenilesRecords
Eratigena agrestis (Walckenaer, 1802) 61 45 4 74
Eratigena atrica (C. L. Koch, 1843) 14 38 9 43
Individuální sběrMalesFemalesJuvenilesRecords
Eratigena agrestis (Walckenaer, 1802) 18 23 4 30
Eratigena atrica (C. L. Koch, 1843) 33 54 9 69
Zemní pastMalesFemalesJuvenilesRecords
Eratigena agrestis (Walckenaer, 1802) 82 37 179 58
Eratigena atrica (C. L. Koch, 1843) 42 59 133 34
SmykMalesFemalesJuvenilesRecords
Eratigena agrestis (Walckenaer, 1802) 5 2 0 3
Eratigena atrica (C. L. Koch, 1843) 1 10 0 5
ProsevMalesFemalesJuvenilesRecords
Eratigena agrestis (Walckenaer, 1802) 1 1 0 2
Eratigena atrica (C. L. Koch, 1843) 2 2 0 2
PozorováníMalesFemalesJuvenilesRecords
Eratigena atrica (C. L. Koch, 1843) 1 2 0 4
FotografieMalesFemalesJuvenilesRecords
Eratigena atrica (C. L. Koch, 1843) 1 1 0 2
Žlutá miskaMalesFemalesJuvenilesRecords
Eratigena agrestis (Walckenaer, 1802) 1 0 0 1
SklepáváníMalesFemalesJuvenilesRecords
Eratigena atrica (C. L. Koch, 1843) 0 7 0 1
 MalesFemalesJuvenilesRecords

By biotope (329 used records)
NeurčenoMalesFemalesJuvenilesRecords
Eratigena agrestis (Walckenaer, 1802) 76 56 177 87
Eratigena atrica (C. L. Koch, 1843) 20 44 14 61
Interiéry budovMalesFemalesJuvenilesRecords
Eratigena agrestis (Walckenaer, 1802) 6 5 0 6
Eratigena atrica (C. L. Koch, 1843) 36 51 0 50
Skalní stepi na vápenciMalesFemalesJuvenilesRecords
Eratigena agrestis (Walckenaer, 1802) 25 15 0 14
Eratigena atrica (C. L. Koch, 1843) 0 1 0 1
KamenolomyMalesFemalesJuvenilesRecords
Eratigena agrestis (Walckenaer, 1802) 0 3 0 3
Eratigena atrica (C. L. Koch, 1843) 4 9 4 8
RuderályMalesFemalesJuvenilesRecords
Eratigena agrestis (Walckenaer, 1802) 5 1 0 4
Eratigena atrica (C. L. Koch, 1843) 2 6 0 6
Xerotermní travinobylinná společenstvaMalesFemalesJuvenilesRecords
Eratigena agrestis (Walckenaer, 1802) 11 2 2 7
Eratigena atrica (C. L. Koch, 1843) 0 1 0 1
Suché loukyMalesFemalesJuvenilesRecords
Eratigena agrestis (Walckenaer, 1802) 15 6 0 7
Eratigena atrica (C. L. Koch, 1843) 1 0 0 1
Haldy a výsypkyMalesFemalesJuvenilesRecords
Eratigena agrestis (Walckenaer, 1802) 2 1 0 2
Eratigena atrica (C. L. Koch, 1843) 1 30 133 5
Lesostepní doubravyMalesFemalesJuvenilesRecords
Eratigena agrestis (Walckenaer, 1802) 8 0 0 5
PísčinyMalesFemalesJuvenilesRecords
Eratigena agrestis (Walckenaer, 1802) 4 0 4 5
Kamenité suti nižších polohMalesFemalesJuvenilesRecords
Eratigena agrestis (Walckenaer, 1802) 2 1 3 3
Eratigena atrica (C. L. Koch, 1843) 2 0 0 2
Těžebny písku a jiných nezpevněných horninMalesFemalesJuvenilesRecords
Eratigena agrestis (Walckenaer, 1802) 1 4 0 5
Lesní okrajeMalesFemalesJuvenilesRecords
Eratigena agrestis (Walckenaer, 1802) 2 2 0 2
Eratigena atrica (C. L. Koch, 1843) 0 1 0 2
Vnější stěny budovMalesFemalesJuvenilesRecords
Eratigena atrica (C. L. Koch, 1843) 1 3 0 4
Zahradnicky utvářené zahrady a parkyMalesFemalesJuvenilesRecords
Eratigena agrestis (Walckenaer, 1802) 2 1 0 1
Eratigena atrica (C. L. Koch, 1843) 1 2 0 3
Suché doubravyMalesFemalesJuvenilesRecords
Eratigena agrestis (Walckenaer, 1802) 3 0 0 3
Eratigena atrica (C. L. Koch, 1843) 10 10 0 1
Stinné skály nižších polohMalesFemalesJuvenilesRecords
Eratigena agrestis (Walckenaer, 1802) 0 2 0 1
Eratigena atrica (C. L. Koch, 1843) 0 2 0 2
Acidofilní boryMalesFemalesJuvenilesRecords
Eratigena atrica (C. L. Koch, 1843) 7 4 0 3
Porosty borůvekMalesFemalesJuvenilesRecords
Eratigena agrestis (Walckenaer, 1802) 1 0 0 1
Eratigena atrica (C. L. Koch, 1843) 7 0 0 2
JeskyněMalesFemalesJuvenilesRecords
Eratigena agrestis (Walckenaer, 1802) 0 1 0 1
Eratigena atrica (C. L. Koch, 1843) 1 0 0 2
Suché křovinyMalesFemalesJuvenilesRecords
Eratigena agrestis (Walckenaer, 1802) 1 1 0 2
Eratigena atrica (C. L. Koch, 1843) 0 1 0 1
DubohabřinyMalesFemalesJuvenilesRecords
Eratigena agrestis (Walckenaer, 1802) 1 1 0 1
Eratigena atrica (C. L. Koch, 1843) 1 3 0 1
Travnaté stepiMalesFemalesJuvenilesRecords
Eratigena agrestis (Walckenaer, 1802) 0 2 0 2
Nízké xerofilní křovinyMalesFemalesJuvenilesRecords
Eratigena agrestis (Walckenaer, 1802) 0 1 0 1
RašeliništěMalesFemalesJuvenilesRecords
Eratigena agrestis (Walckenaer, 1802) 1 0 0 1
PasekyMalesFemalesJuvenilesRecords
Eratigena agrestis (Walckenaer, 1802) 0 1 0 1
Okraje silnicMalesFemalesJuvenilesRecords
Eratigena atrica (C. L. Koch, 1843) 0 1 0 1
Vřesoviště nižších polohMalesFemalesJuvenilesRecords
Eratigena atrica (C. L. Koch, 1843) 0 1 0 1
Skalní a suťové biotopyMalesFemalesJuvenilesRecords
Eratigena atrica (C. L. Koch, 1843) 0 1 0 1
Obhospodařované pozemkyMalesFemalesJuvenilesRecords
Eratigena atrica (C. L. Koch, 1843) 0 1 0 1
LoukyMalesFemalesJuvenilesRecords
Eratigena agrestis (Walckenaer, 1802) 1 2 0 1
Polní biotopyMalesFemalesJuvenilesRecords
Eratigena agrestis (Walckenaer, 1802) 1 0 0 1
LesyMalesFemalesJuvenilesRecords
Eratigena atrica (C. L. Koch, 1843) 0 2 0 1
Výsadby jehličnanůMalesFemalesJuvenilesRecords
Eratigena agrestis (Walckenaer, 1802) 0 0 1 1
 MalesFemalesJuvenilesRecords