Now showing items 1-6 of 6
Incidence of parasitoids and predators on eggs of seven species of Therididae (Araneae)
Although many characteristics of the egg sacs of spiders likely evolved to reduce the effect of parasites and predators that attack their eggs, many parasite and predator insects have become specialized on spider eggs. ...
Ultrastructure of Deinopis egg sac (Araneae: Deinopidae)
Attacks by predators and parasitoids on spider eggs are common. To counteract their negative effect, spiders have evolved a series of behaviours and features related to their egg sacs. In the genus Deinopis (Deinopidae) ...
Characteristics of the cocoon and natural history of the gregarious Meteorus restionis sp. n. (Hymenoptera, Braconidae, Meteorinae) from Costa Rica
A new species of a gregarious Meteorus wasp (Braconidae) constructs an unusual cocoon mass. Meteorus restionis sp. n. is described and distinguished from similar species. Cocoons of M. restionis are dark-brown, ovoid, and ...
Function of the upper tangle in webs of young Leucauge argyra (Araneae: Tetragnathidae)
Ontogenetic changes in web structure occur in many spiders of different families, but the functional adaptation of differences in web structure is unknown for most species. We describe the ontogenetic changes in web structure ...
Characteristics of the capture threads of Synotaxus sp. (probably S. turbinatus) webs (Araneae, Synotaxidae)
Synotaxus spiders have independently evolved aerial, planar webs to intercept and retain prey, but these webs differ in several respects from planar araneoid webs with similar functions. The silk capture threads of Synotaxus ...
Egg sac construction by folding dead leaves in Pozonia nigroventris and Micrathena sp. (Araneae: Araneidae)
Published descriptions of egg sac construction behavior in araneids are scarce. We describe egg sac construction and oviposition in one individual of the poorly known araneid Pozonia nigroventris (Bryant 1936) and two ...