What is this?

https://commons.wikimedia.org/wiki/File:Dicranopalpus_ramosus_(23520030985).jpg

Dicranopalpus ramosus is a species of harvestman. Males are up to 4 mm long, females can reach up to 6 mm. Both sexes have very long legs (especially the second pair can reach up to 5 cm), with a distinct elongated apophysis that reaches almost to the end of the tibia. This makes their pedipalps look forked. Their body is brownish with dark markings, the females being lighter colored.


D. ramosus from Leverkusen, Germany
The forked pedipalps and the resting posture, with the legs stretched to the sides, makes this species easy to identify, although the traditional method of collecting invertebrates does not prove adequate: of 103 individuals captured in Belgium, only one was found in a pitfall; all others were collected by hand.

Adults can be found from August to November, mostly in gardens and on outer walls, but sometimes also inside.

https://maps.biodiversityireland.ie/Species/183922

According to above the first sighting in Ireland was 1994 and the latest recorded sighting was September 2015. Might be worth contacting them col with your photo and info to updatre the record.