A new giant species of placented worm and the mechanism by which onychophorans weave their nets (Onychophora: Peripatidae)

Morera Brenes, Bernal; Monge Nájera, Julián

dc.creator	Morera Brenes, Bernal
dc.creator	Monge Nájera, Julián
dc.date	2010-02-17
dc.date.accessioned	2016-05-03T15:34:06Z
dc.date.available	2016-05-03T15:34:06Z
dc.identifier	http://revistas.ucr.ac.cr/index.php/rbt/article/view/5398
dc.identifier	10.15517/rbt.v58i4.5398
dc.identifier.uri	https://hdl.handle.net/10669/27553
dc.description	Onychophorans, or velvet worms, are poorly known and rare animals. Here we report the discovery of a new species that is also the largest onychophoran found so far, a 22cm long female from the Caribbean coastal forest of Costa Rica. Specimens were examined with Scanning Electron Microscopy; Peripatus solorzanoi sp. nov., is diagnosed as follows: primary papillae convex and conical with rounded bases, with more than 18 scale ranks. Apical section large, spherical, with a basal diameter of at least 20 ranks. Apical piece with 6-7 scale ranks. Outer blade 1 principal tooth, 1 accessory tooth, 1 vestigial accessory tooth (formula: 1/1/1); inner blade 1 principal tooth, 1 accessory tooth, 1 rudimentary accessory tooth, 9 to 10 denticles (formula: 1/1/1/9-10). Accessory tooth blunt in both blades. Four pads in the fourth and fifth oncopods; 4th. pad arched. The previously unknown mechanism by which onychophorans weave their adhesive is simple: muscular action produces a swinging movement of the adhesive-spelling organs; as a result, the streams cross in mid air, weaving the net. Like all onychophorans, P. solorzanoi is a rare species: active protection of the habitat of the largest onychophoran ever described, is considered urgent.	en-US
dc.format	application/pdf
dc.language	eng
dc.publisher	Universidad de Costa Rica	en-US
dc.rights	Copyright (c) 2014 International Journal of Tropical Biology and Conservation	en-US
dc.source	Revista de Biología Tropical/International Journal of Tropical Biology and Conservation; Vol. 58 (4) December 2010	en-US
dc.source	Revista de Biología Tropical/International Journal of Tropical Biology and Conservation; Vol. 58 (4) December 2010	es-ES
dc.source	Revista Biología Tropical; Vol. 58 (4) December 2010	pt-PT
dc.source	2215-2075
dc.source	0034-7744
dc.source	10.15517/rbt.v58i4
dc.title	A new giant species of placented worm and the mechanism by which onychophorans weave their nets (Onychophora: Peripatidae)	en-US
dc.type	artículo original
dc.coverage	CRC	en-US

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