Nap ízeltlábúja - Arthropod ofFeb 18
A nap ízeltlábúja a pókok törpepókok családjába tartozó koszorús törpepók - Steatoda albomaculata https://www.izeltlabuak.hu/faj/koszorus-torpepok/talalatok #koszorúsTörpepók #SteatodaAlbomaculata #törpepókok #Theridiidae #pókok #Araneae #CitizenScience #KözösségiTudomány
Steatoda albomaculata - koszorús törpepók

A Steatoda albomaculata - koszorús törpepók fajhoz tartozó észlelések listája

Show threadneville parkOct 16

#Arachtober 15: it's _Zygiella_ courtship season! The males hang around the edges of the females' webs, plucking and strumming rhythmically to communicate. Here's a male with his long "elbowed" pedipalps; a female; and a cobweb spider preying on an unlucky male suitor who got too close.

#ArthroBeauty #spiders #Araneae #Araneidae #Theridiidae

neville parkApr 5, 2025

#BREAKING: new Travis McEnery video just dropped and it's a 1h20m look at the black widow spider!! https://youtu.be/DHl_wRE4H0Y

(Two of the arachnologists who regularly advise on the series have studied black widows so this is gonna be a good one)

#SpidersOfMastodon #spiders #Theridiidae #Latrodectus

The Black Widow - The Spiders in Your House

YouTube
Nap ízeltlábúja - Arthropod ofFeb 24, 2025
A nap ízeltlábúja a pókok törpepókok családjába tartozó dudva törpepók - Neottiura bimaculata https://www.izeltlabuak.hu/faj/dudva-torpepok/talalatok #dudvaTörpepók #NeottiuraBimaculata #törpepókok #Theridiidae #pókok #Araneae #CitizenScience #KözösségiTudomány
Neottiura bimaculata - dudva törpepók

A Neottiura bimaculata - dudva törpepók fajhoz tartozó észlelések listája

neville parkFeb 14, 2025

Got quite the shock just now when I saw my pet _Parasteatoda_ had made an egg sac!!

She has molted since I caught her, so it's not fertilized, she just made it on her own initiative. I didn't think she was full grown! I'm just very surprised. Uh…happy Valentine's Day?

#DailySpiderPic #SpidersOfMastodon #spiders #Araneae #Theridiidae

NIOO-KNAWJan 17, 2025
New publication: Copulation interruption decreases female reproductive success in a false widow spider. #reproduction #copulationduration #eggsac #offspring #steatodagrossa #theridiidae
https://doi.org/10.1007/s00265-024-03525-9
Copulation interruption decreases female reproductive success in a false widow spider - Behavioral Ecology and Sociobiology

Copulation is essential for transferring sperm from males to females in most animals. During copulation, males and females are often static and thus prone to predation or other threats. Its duration should therefore be reduced to minimize costs but sufficient to ensure the fertilization of eggs. Here, we investigated reproductive behavior and success in the false widow spider, Steatoda grossa (Araneae: Theridiidae), when copulation was interrupted after 1, 3, 5, 10, or 20 min or was not experimentally interrupted (control). Copulation duration in this study is defined as the total duration of insertions of male pedipalps into a female’s copulatory openings. In S. grossa, uninterrupted copulations typically last 40 to 60 min. We found that within the first 5 min, copulation interruption negatively affected reproductive success (i.e., number of egg sacs, their total mass, and number of spiderlings), and delayed production of the first egg sac within the first 10 min (in some extreme instances by over 200 days). However, when copulation duration was 10 min or longer, reproductive outcome was unaffected. In the 1-min treatment, the number of egg sacs and their mass varied greatly, which indicates considerable variation among males with respect to the speed and efficiency of sperm transfer. We discuss the costs and benefits of extended copulation duration on female reproduction and on male and female fitness.

SpringerLink
neville parkJan 4, 2025

The little cobweb spider molted! This is her second molt in my care (she first molted right after I put her in a container).

She's only a few millimetres long. I think she's a _Parasteatoda_, which can get to about the size of a pea.

#DailySpiderPic #SpidersOfMastodon #spiders • #Araneae #Theridiidae

Show threadneville parkOct 15, 2024

#Arachtober 14: #RIP Sabella the black widow.

I had her for ten months exactly (https://flipping.rocks/@nev/11157397654673256). Her last molt was about six months ago.

I have added her to my collection.

I didn't have the sort of attachment to her that one has with a pet that, you know, can perceive you are a human being and interact with you and that you can handle and whatnot, but I will miss the bumbling little murderess.  

#DailySpiderPic #SpidersOfMastodon #spiders • #Araneae #Theridiidae

Show threadneville parkOct 13, 2024

#Arachtober 13: while I was in the grass taking the photos I posted yesterday, every movement would send little leafhoppers (family Cicadellidae) springing away. This one leaped right into the web of a tiny _Theridula_ cobweb spider, who quickly seized it.

(At least, I think it's a leafhopper, but true bugs aren't my wheelhouse so please correct me if I'm wrong!)

edit: accidentally the date

#DailySpiderPic #SpidersOfMastodon #spiders • #Araneae #Theridiidae

Show threadneville parkOct 6, 2024

Belated #Arachtober 5: this absolutely minute, delicately pink cobweb spider (perhaps a young _Steatoda triangulosa_?) I found under a leaf in the garden while I was looking for anystids. It is so small it could easily be a mite! It has already captured an ant, likely one of the _Prenolepis imparis_ so common in the garden.

#ArthroBeauty #DailySpiderPic #SpidersOfMastodon #spiders • #Araneae #Theridiidae