02454nas a2200313   4500008004100000020001400041245015400055210006900209260000900278300000900287490000800296520132100304653005001625653002501675653001501700653002501715653007401740653005901814653001201873653001301885653002301898653002101921653003701942653005401979653003602033100001602069700001402085856004102099       1991                        eng d  a0720-213X00aThe silk-producing system of Linyphia triangularis (Araneae, Linyphiidae) and some comparisons with Araneidae. Structure, histochemistry and function0 asilkproducing system of Linyphia triangularis Araneae Linyphiida  c1991  a1-170 v1113 aThe spinning apparatus of Linyphia triangularis, adult females and males, was studied with the scanning electron microscope and the main anatomical and histochemcial characteristics of the silk glands, including the epigastric apparatus of males, are presented. The epigastric glands seem to be important for the construction of sperm webs. A detailed account of the use of the different kinds of silk in web building is given. This spinning apparatus of Linyphia closely corresponds to the araneid pattern. Characteristic of linyphiid spiders is the poor development of the aciniform glands. Corresponding to the minor importance of capture threads of Linyphia, the triads (aggregate and flagelliform glands) are less developed than in Araneidae. Linyphia make much less use of the secretions of the piriform glands for connecting threads than Araneidae. Capture threads adhere to other threads of their own glue; other threads seem mostly to be bound to one another by the secretion of the minor ampullate glands whose chemical properties, in Linyphia, appear espescially adapted to this function. Neither the anatomical and histochemical data concerning the spinning apparatus nor the structure of the webs provide any indication of close relationships between Linyphiidae and Agelenidae, as was recently claimed.10a/ ] [Webs / / Structure & thread morphology].10aAnimal constructions10aAppendages10aAraneidae (Araneae).10aAraneidae [Silk glands / / Comparison with Linyphiidae] [Spinnerets /10acomparison with Araneidae] [Spinnerets / / ] [Webs / /10aEcology10afunction10aGeneral morphology10ahistochemistry &10aLinyphia triangularis (Araneae).10aLinyphia triangularis [Silk glands / / Morphology10aStructure & thread morphology].1 aPeters, H M1 aKovoor, J  u<Go to ISI>://ZOOREC:ZOOR12800063025