Spider attacking wasp in web found preserved in amber; oldest example - 100 million yrs; great photo, http://bitly.com/RtABJa Beyond Webs: Spider hunting methods http://bitly.com/K6yd5c
It is accurate though none the less. Cohabitation of a mature male and immature spider is completely social, and not normal at all. Very, very few species of spider are social like this. Your mistaking cohabitation of sexually mature specimens with this. They are not comparable.My gripe with the article is as findi mentioned. Being caught in amber is a snap shot. The tiniest microspan of time. Nothing that any reasonable scientific conclusion would be based upon. The report seems to conclude cohabitation as unusual. Some degree of cohabitation is required or the species wouldn't exist in the first place.
Be all that as it may, it is certainly a remarkable little window into a drama played out so long ago.
I have the subscription and it doesn't say much more.There are species that rob webs, others that lure web-owners into an ambush by mimicking a prey item, and so on. Difficult for me to draw any conclusions w/o more info.