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Orb-weaver Spider with Prey
Neoscona molemensis
15.4562, 119.92
Field Notes
Description:
When I spotted this Orb-weaver Spider, there was a grasshopper on its web, struggling to try and free itself. Of course, as we all know, the more the prey struggles on a spider web, the more entangled it becomes. The spider was up at the top of the web and I thought that it might be waiting for the prey to become exhausted, before approaching it, but before I could take my first photo, it rushed down to the grasshopper and started running around it, feeding out a silk strand as it went. Very soon, the spider had the grasshopper completely immobilized. I have seen (and shot some movie footage of) Argiope spiders wrapping their prey and they use a very sophisticated type of silk "ribbon" which completely enshrouds the victim which ends up looking like an Egyptian mummy, but this spider bound its prey with silken thread which seemed to be thicker than the threads which made up its web. The end result looked haphazard, but it worked. The grasshopper could no longer put up a struggle. Now, regarding the spider's identity, I originally called it Neoscona sp. because I couldn't see enough detail to be sure, but I revisited the site where I spotted it (this morning, Dec 8, 2022) and took some more photos. I am now confident enough to call this spider Neoscona molemensis Tikader & Bal, 1981. Some excellent pictures in https://www.inaturalist.org/observations/143470601 convinced me of this identification and https://en.wikipedia.org/wiki/Neoscona confirms its presence in Philippines. I originally referred to the prey just as a grasshopper, but on revisiting the site I saw a great many grasshoppers in the immediate area surrounding the spider's web but the ones of appropriate size were all Pseudoxya diminuta. So I took some photos and compared them with the prey in this spotting. The prey in the pictures above is so messed-up by the spider's attack that it is impossible to be 100% sure, but my P. diminuta photos taken this morning seem to match what details can be seen. So I have decided that the weight of evidence is enough to tip the scale in favour of calling the prey Pseudoxya diminuta Walker, 1871.
Habitat:
This Orb-weaver Spider was spotted in the rice mill backyard on an area of uncultivated and unused land. Its web was built in tall grasses and was positioned about 2ft. up from the ground.
Notes:
I realized before I went back to the site of the original spotting that I would need some photos of the spider and any nearby grasshoppers for comparison purposes, if I were to have any chance of successful identifications. So, as I set off to try and achieve this, I knew that it would be impossible to squeeze additional photos into this spotting and I probably would spoil the whole thing if I tried to remove some of the actual "spotting" pictures to make room for "comparison" pictures. This has now proved to be correct. I have tried messing around with the pictures and I can't make it work. So What I have decided to do is create two additional separate spottings (one for the N. molemensis for comparison with the predator and another for the P. diminuta for comparison with the prey) with links to this original spotting. In this way, I hope to avoid breaking Project Noah's rules about having too many species in one spotting and perhaps clarify some of the muddle I caused by not being able to identify the creatures in my own photos in the beginning. To get complete information on this species interaction and how the species involved were identified, this spotting should be linked with https://www.projectnoah.org/spottings/562465455 and https://www.projectnoah.org/spottings/1982484675
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