relbugman wrote:
Thanks to dnote627 for the fine shots [are there babies below?], and Donald dpullum for the link on Widow mating – very interesting to me! Just a small problem – it reverses the captions: photo #3 (“The male brown widow (pictured)”) is actually an immature female, and photo # 4 (“A female brown widow tends to her web.”) is the male, note the enlarged pedipalps. (It happens!)
Would that nature be so easily explained. Other factors are also in play: a hungry female may lay less eggs and experience more egg mortality, so the meal may be important to BOTH partners’ contribution to posterity; as females may lay 10+ egg sacs from only one mating, she may weather a paucity of males, but evenso, added matings may strengthen the contribution of the last sacrificial male, especially if she is biased by a tasty dessert; it does mention that a male has a very slight chance of encountering a second female (exception possible for Browns), so best to keep the pregnant female healthy rather than die without further issue anyway; where food is abundant, males often take up residence in a far corner of a female’s web – in 13 webs along a sidewalk on one block in CA, 7 had resident males, one even had two! And more, I’m sure.
Thanks to dnote627 for the fine shots are there b... (
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I really don't know much about the black widows. I googled pictures of the smaller brown one with the pattern on its back and came up with a match of the western male. I didn't see the typical red hourglass on the large black one. Lots of egg sacs though. I did not get close enough to see if there were babies. Thanks for the info about them. I do appreciate it. :) Donna