Pseudosinella jacetanica, Jordana, Rafael & Baquero, Enrique, 2007

Jordana, Rafael & Baquero, Enrique, 2007, New species of Pseudosinella Schäffer, 1897 (Collembola, Entomobryidae) from Spain, Zootaxa 1465, pp. 1-14 : 9

Pseudosinella jacetanica sp. nov.

Figs. 13-19 , Table 3

Type material. Monte Boalar, Jaca, Huesca ( Spain). Holotype: female, slide MNCN 115coll2003(4)62, captured on surface, labelled as: "Lab.º Faunística [f#?] agost 5% panta Jaca Monte Boalar 2.v.1965 (9) Pseudosinella decipiens Denis [4]". Paratypes: slide MNCN 115coll2003(4)63 (2 specimens), slide MNCN 115coll2003(4)65 (2 specimens), slide MNCN 115coll2003(4)70 (1 male). Deposited in the Museo Nacional de Ciencias Naturales-CSIC ( MNCN), Madrid ( Spain).

Other material. Slide MNCN 115coll2003(4)64 (1 specimen), labeled as: "Zool. Suelo Jaca, Monte Boalar 13.xi.1965 (R021) 1 jacensis?"; slide MNCN 115coll2003(4)73 (1 specimen), "Lab.º Faunistica 5% agost espatula? Arras Bailo Huesca Raíces espárragos 15-IX-66 leg. Puigdefabregas: MrEL Pseudosinella decipiens Denis R 011/32/0201+2 no jacensis". Biotope: asparagus roots.

Description. Maximum length 1,25 mm (holotype: 0,78 mm). Apparently without pigment. Without eyes. Ratio antenna/cephalic diagonal 1,4 and 1,7. Antennal segments I/II/III/IV ratios 2,79/1,79/1,79/1. Sensorial setae s of the sensory organ of antennal segment III short and expanded (leaf shaped), and one more similar on antennal segment II. Apical vesicle absent from antennal segment IV.

Formula of the labial base ( Fig. 15 ): M1M2rEL1L2 (all setae ciliated but very slightly, except r, that is vestigial microchaeta). Formula of the dorsal macrochaetae: R011/32/0201+2 ( Fig. 14 ). Anterior seta to pseudopore thoracic II absent. Abdominal tergite II chaetotaxy: pABq1q2 ( Fig. 13 ). A of the length of B. R complex of the head with R0 to R2 Accessory seta s in the anterior trichobothrial complex of abdominal tergite IV present ( Fig. 16 ). Seta P on abdominal tergite IV anterior to the trichobothrium ( Fig. 17 ). Medial seta M1 slightly above trichobothrium T2, pseudopore at the level of M2.

Unguis ( Fig. 18 ) with dental plate occupying 50% of the basal internal edge; one of the basal tooth slightly bigger than the other one; medial tooth well developed, approximately 60% from base of total unguis. Ungual wing tooth present, but very difficult to see in some specimens. Unguiculus appendage acuminate, finely serrated. Tibiotarsi with acuminate tenent hair. Legs without scales. Retinaculum with 4 + 4 teeth and one ciliated seta. Two internal and two to three external setae related to two distal pseudopores of manubrial plate. Mucro with distal tooth longer than the anteapical; the basal spine reaches just to the tip of the distal tooth ( Fig. 19 ).

Etymology. The species name is referred to the locality: Jaca.

Discussion. Only P. subilliciens Mateos, 1993 and P. g i n e t i Cassagnau, 1955 has the same macrochaetae formula that P. jacetanica sp. nov. P. gineti is a cavernicolous species with a very long unguis and with the following differences with the new species: labial base formula (all setae except r as smooth macrochaetae), sensorial seta s of the sensory organ of antennal segment III peg or rod-like, ratio antenna/cephalic diagonal 2,3, ungual wing tooth absent, unguiculus swollen and without teeth, and maximum length 3 mm. P. subilliciens with macrochaetae of labial base (except for r) clearly ciliated; tenent hair clavate and with three-four internal teeth on the unguis ( Table 3 ).

Figures

FIGURES 13 – 19. Pseudosinella jacetanica sp. nov.: 13, chaetotaxy of abdominal segment II; 14, head macrochaetotaxy; 15, labium chaetotaxy; 16, trichobothrial complex of abdominal segment IV; 17, macrochaetotaxy of abdominal segment IV; 18, distal part of leg III; 19, mucro.