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adult male - found this little fella actively moving about on a leaf... and while i was photographing it... the water droplet appeared and got larger with time till it touched the leaf beneath. while all that was happening... the spider remained stationary... but unfortunately... for whatever reasons unknown to me... this little fella died minutes later.! the only reasonable reason/explanation for the water droplet is that it seems to be regurgitation of digestive fluid but that has never been associated with the death of a spider.! maybe its death has something to do with whatever it ate earlier as there are many insects that carry toxins in their blood... although often the spider can detect this and drop the prey... but there are some toxins (like cardenolides) that can kill salticids but they may not detect them. milkweed bugs (Oncopeltus) sequester cardenolides that are toxic to Phidippus... but the spiders cannot detect these... but they do immediately detect other chemicals (not yet characterised) produced by Oncopeltus that have fed on milkweed (Aslepias) plants. all said... we actually know very little about spider pathology.!
Araneae; Salticidae; Heliophaninae; Chrysillini