Some scientists theorize that the stabilimenta (zigzag) in the center of the web serves to make the web more easily seen by birds that will then avoid flying through it.The zigzag design in the center of the web may help to camouflage the spider. The coloration, size, and web of this spider at maturity make it conspicuous in the garden. Entangled prey is immediately wrapped with swaths of silk and bitten with fangs in order to subdue it. If movement in the web is detected, the spider will often wave or vibrate the web in order to entangle the prey. This spider is diurnal (active in the daytime) and usually hangs head down in the center of the web. The circular filaments of the orb web are sticky so that the spider may capture small flying insects such as flies, grasshoppers, crickets, wasps, and bees. The spider hangs its head down in the center of the web. The exact purpose of the stabilimenta is not known, but it has been thought that it may aid in web stabilization, aid in the capture of prey, or prevent birds from flying through it. The slightly inclined orb web has a distinctive vertical zigzag design in the center (called stabilimenta). This spider can be found in gardens or open fields where the large orb web (up to 2 feet wide!) can be spun. The male is about half the size of the female, and similar but often brighter in color.īlack and Yellow Garden Spiders are located all around the United States and even in southern Canada. There is a large difference in size between the male and female of this spider species. The carapace of the cephalothorax is covered with silvery hairs, and their legs are black with reddish or yellow bands. The large abdomen is black with yellow or orange markings. The female Argiope is a large, conspicuous spider up to 1-1/8 inch long at maturity.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |