#arachtober — Public Fediverse posts

'Zahlen: Acht' #FotoVorschlag

ich habe mich jetzt aus den vielen bildern von achtbeinern für's erste für dieses entschieden, zum einen, weil der arachnophobie-trigger-faktor für viele bei diesen weberknechtartig aussehenden zitterspinnen weit geringer ist als bei anderen, zum anderen weil die beiden so süß eine liegende 8 mit ihren beinen formen :3

#spinnen #spider #krabbeltierchen #paarung #arachtober #nature #biodiversity

#Arachtober 12: Mesh-web weavers (family Dictynidae) are so small they can easily make a web in a single leaf. This one has caught a long-legged fly (family Dolichopodidae).

#DailySpiderPic #spiders #Araneae #Dictynidae #Diptera #Dolichopodidae

#Arachtober 10: from back in June, a mesh-web weaver (family Dictynidae) back-combing a line of silk to turn it into a fuzz of nanofibres. Spiders like this have a special sieve-like silk-making organ called a cribellum. This in fact is the ancestral state of most spiders.

Cribellate silk doesn't use glue; rather, it melds with the waxy compounds on some insect exoskeletons. It doesn't stick very well to other surfaces. Later in spider evolution, spiders developed other types of silk that could catch different insects and support more ambitious aerial webs. However, for a minority of spiders, cribellate silk still works just fine.

More details in this 2017 paper: https://royalsocietypublishing.org/doi/10.1098/rspb.2017.0363 :OpenAccess:

#DailySpiderVid #arachnids #spiders #Araneae #Dictynidae #SpiderSilk #SpiderBehaviour #OpenAccess