Tetragnatha sp.

(Determinado por un experto)
Tetragnatha sp.
Esta foto es propiedad de su autor y no puede ser utilizada sin su consentimiento


Tetragnatha sp.

Tetragnatha sp.
Sobre Tamarix sp.
59
IDENTIFICACIÓN:
Tetragnatha sp.
Quizás Tetragnatha extensa.
FOTOGRAFIA TOMADA EN:
Tarajes y matorrales en margen de rambla.
España
Murcia
DATOS DEL ESPÉCIMEN :
 
Puesta
EQUIPO Y TÉCNICA FOTOGRAFICA UTILIZADA:
 
Información EXIF:
SONY
DSLR-A230
1/160 sec(s)
F/8
400
55mm

Comentarios:


  • Me acuerda a Tetragnatha.

    Saludos


  • Gracias Thomas
    Por la zona las Tetragnatha son muy abundantes sobre Tamarix sp. En concreto las especies que creo haber reconocido son T. extensa y T. obtusa:

    http://www.biodiversidadvirtual.org/insectarium/Tetragnatha-obtusa-img251699.search.html
    http://www.biodiversidadvirtual.org/insectarium/Tetragnatha-extensa-img261114.search.html

    He estado buscando en internet fotos de las puestas de estas dos especies pero no he encontrado, aunque sí esta descripción de la puesta de T. extensa que parece coincidir bastante bien con la foto, está extraida de "American Spiders and their Spinningwork", Henry C. McCook:

    The cocoon of Tetragnatha extensa is a pretty object. I have never seen the mother weaving it, nor have I obtained it by confining the female within my trying boxes. But I have found it in the fields, where one may identify it by its resemblance to that spun by European individuals of the species; and, moreover, I have hatched the young, and thus demonstrated the true cocoon. It is an ovoid object, about quarter of an inch long and three-sixteenths of an inch wide and thick, and is commonly woven against a leaf, or twig, or bit of bark, or other convenient object. (Figs. 75, 76.) I have found what I suppose to be this cocoon, suspended by four diverging lines within an open space, as, for example, in the post hole of fences, as shown at Fig. 77. The cocoon varies somewhat in color, being usually of a cream white tinted with green. The silk looks almost like wool. The exterior is covered with little points or minute projecting rolls, in this respect somewhat approximating the cocoon of Uloborus. Within this exterior case are found the eggs, which are over-spun by a slight flossy covering.

    Saludos


  • Puede ser, pero igual muchas de las Tetragnathas pueden tener puestas parecidas.

    Saludos,

    Thomas