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handle: 10261/167358
[EN] A new species of the genus Folsomia is described from Navarra, the name makes reference to cuticular sculpture. Measurements: Length : the mean of 18 males, 532.5 microns the mean of 20 females , 618.7 microns Description: Dorsal view with 6 segments, two toracics and four abdominals. IV-VI abdominal segments fused, fourth (IV) antenal segment with a subterminal sensory papilla and a guard hair, and eight sensitive cilindrical hairs few differenciated, third antenal segment vvith 2 short curved rods and two subcilindrical guard hairs. Postantenal organ larger than the antenae bases and 3 times larger than the diagonal of the fore eye. Two eyes, the fore one near the postantenal organ, the lind one at four diameters from the fore eye. The fore eye bigg-er than the lind one. Claw without inner tooth, empodial appendage reaches 1/2 to 2/3 of the internal side of the claw. Ventral tube with 3 + 3 anterior, medial hairs and 3 + 3 posterior dista! hairs. Tenaculum with 4 + 4 teeth and 1 setae in the corpus, manubrium with 1 + 1 anterior setae. Dens with 5 + 5 anterior seta and 4 posterior hairs. Muero with two teeth. Folsornia type. Male genital pore rounded with a crown of 9 exterior seta and another interior crown of 6 seta. Female genital pore with 2 valvas and with the following chaetotaxia : 3 + 3 anterior seta, 1 medial impar setae and 3 + 3 posterior seta. Abdominal IV-VI segment with 4 + 4 special seta, leaf-shape like, three in a line and one before it.
[ES] El presente trabajo es uno de los resultados del estudio que el Departamento de Zoología de la Universidad de Navarra está efectuando sobre la fauna de Quinto Real en los Pirineos Occidentales, Navarra. Este nuevo hallazgo no hubiera sido posible sin la ayuda de Mr. P. N. LAWRENCE, del British Museum (Natural History), y sin haber dispuesto de los fondos bibliográficos de dicha institución que he podido consultar personalmente, gracias a la amabilidad de los Dres. FREEMAN y MOUND, del Departamento de Entomología de dicho Museo, a los que expreso mi reconocimiento '. Los ejemplares de esta nueva especie, debido a su pequeño tamaño y a su coloración, estaban clasificados como larvas de Folsomia nana GISIN O F. quccdrioculata (TuLLBERG). Un estudio cuidadoso de los ejemplares demostró una escultura de la cutícula cercana a Isotomina scapelif era GISIN, grupo Cryptopigus, dentro del cual en un principio pensé que podría incluirse, pero la ausencia de trazas de división en el segmento abdominal IV-VI, lo agrupa, a mi juicio, dentro del género Folsomia.
Peer reviewed
Folsomia, New taxon, Nuevo taxon, Collembola, Isotomidae
Folsomia, New taxon, Nuevo taxon, Collembola, Isotomidae
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