On the Life History of Cyspius orientalis YAGINUMA (Araneae: Pisauridae)

Kaihotsu, Kenji

doi:10.2476/asjaa.37.13

Cited by 3 publications

(3 citation statements)

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“…Lycosid, trechaleid, and rhoicinine females continue to carry their progeny for a number of days after they have emerged from the egg sac (lycosids about 2-14 days, e.g., McCook 1884;Montgomery 1903:72,76,82,90;Engelhardt 1964:303,387;Trechalea about 17-19 days, Carico et al 1985; Shinobius about 4 days, Kaihotsu 1988). But while lycosid spiderlings climb onto the mother's abdomen during this period, trechaleid spiderlings and at least Shinobius spiderlings (among rhoicinines) climb onto the outside of the egg sac, which the female continues to carry.…”

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On the Use of Ampullate Gland Silks by Wolf Spiders (Araneae, Lycosidae) for Attaching the Egg Sac to the Spinnerets and a Proposal for Defining Nubbins and Tartipores

Townley

Tillinghast

2003

Journal of Arachnology

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The means by which female wolf spiders attach an egg sac to their spinnerets was investigated using scanning electron microscopy. In four Pardosa species, we observed that silk fibers emerging from ampullate gland spigots had been affixed to the surface of the egg sac. More specifically, primary (1°) and secondary (2°) major ampullate (MaA) glands and 1° and 2° minor ampullate (Mi A) glands all contributed fibers for this purpose. The diameters of the 2° MaA and 2° MiA fibers were greater than those of the 1° MaA and 1° MiA fibers and, correspondingly, the widths of the 2° ampullate spigots were clearly greater than those of the 1° ampullate spigots. Larger 2° ampullate spigots were also observed in adult females of species from three other lycosid genera. Thus, 2° ampullate glands, which in araneoids function only in juveniles during proecdysis, are not only functional in adult female lycosids (and adult females of several other families), but they appear to play a greater role than the 1° ampullate glands in egg sac attachment. Observations made on the 1° and 2° ampullate spigots of adult females from species belonging to several other families are also presented. Cuticular structures referred to as nubbins and tartipores are present in some spinning fields on spinnerets. A proposal is made for defining these terms by a criterion, namely their different origins, which differs from that applied previously.

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“…After this period the spiderlings disperse. Kaihotsu (1988) reports that Shinobius females, after carrying their young on the outside of the egg sac for a few days, then hang the egg sac with spiderlings in a nursery web, where the spiderlings remain for about one day.…”

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On the Use of Ampullate Gland Silks by Wolf Spiders (Araneae, Lycosidae) for Attaching the Egg Sac to the Spinnerets and a Proposal for Defining Nubbins and Tartipores

Townley

Tillinghast

2003

Journal of Arachnology

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“…The ecological studies made by K. KAIHOTSU (1988) and others give us an impression that Shinobius may belong to the Lycosidae in view of the process of egg laying, egg carrying habit and the shape of egg-cocoon which is lental shaped and seamed. Shinobius orientalis carries the egg-cocoon attached to the spinnerets, but the spiderlings cluster on the empty egg-sac and never climb up mother's abdomen.…”

Section: Ecology Of Shinobius and Its Relativesmentioning

confidence: 99%

A New Genus, Shinobius, of the Japanese Pisaurid Spider(Araneae:Pisauridae).

Yaginuma¹

1991

Acta Arachnologica

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Notes on the Life History of Zelotes asiaticus (BOESENBERG et STRAND) (Araneae: Gnaphosidae).

Kamura

1993

Acta Arachnologica

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Life history of Zelotes asiaticus (BosENBERG et STRAND) was estimated by means. of laboratory rearing and field investigation. This species is likely to mature after 8 molts during more than a year after emergence from an egg sac. It seems that this species has a two-year life cycle as follows : Eggs are deposited by the overwintered adult females from spring to early summer; spiderlings emerge from the egg sacs in summer and develop to 2nd-5th instar by winter; juveniles which hibernate their first year develop to penultimates in summer and mature in autumn; and adults overwinter. Possibility of copulation between two populations in which the generation cycles differ from each other is discussed. Spiders of the Gnaphosidae are hunters usually living under stones and in plant litter on the ground. Our knowledge about life cycle of these spiders it very poor. Many gnaphosid species are likely to have a one-year life cycle, but it may be possible that a two-year life cycle also occurs in the region where warm season is relatively short (GRIMM, 1985). The life history of Zelotes asiaticus (BOSENBERG et STRAND, 1906), a common gnaphosid species in Japan, is not clear. I conducted a laboratory rearing and a field investigation of this species in order to ascertain its life history.

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On the Life History of Cyspius orientalis YAGINUMA (Araneae: Pisauridae)

Cited by 3 publications

References 1 publication

On the Use of Ampullate Gland Silks by Wolf Spiders (Araneae, Lycosidae) for Attaching the Egg Sac to the Spinnerets and a Proposal for Defining Nubbins and Tartipores

On the Use of Ampullate Gland Silks by Wolf Spiders (Araneae, Lycosidae) for Attaching the Egg Sac to the Spinnerets and a Proposal for Defining Nubbins and Tartipores

A New Genus, Shinobius, of the Japanese Pisaurid Spider(Araneae:Pisauridae).

Notes on the Life History of Zelotes asiaticus (BOESENBERG et STRAND) (Araneae: Gnaphosidae).

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