Pseudosinella tietarensis, 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 : 7-9

Pseudosinella tietarensis sp. nov.

Figs 7-12 , Table 3

Type material. Santa María del Tietar, Ávila ( Spain). Holotype: male, slide MNCN 115coll2003(4)79, captured on surface, labeled as: "Zool. Suelo Santa María del Tietar La Canaleja (9-2) 7.vi.1982 Castañar quemado 1978 suelo -5 a -10 cms R01048 Pseudosinella fallax ". Paratypes: 1 female in the same slide as holotype; slide MNCN 115coll2003(4)82 (1 specimen), with the same information as holotype; slides MNCN 115coll2003(4)80 (3 specimens) and 81 (3 specimens), labeled as: "Zool. Suelo Santa María del Tietar La Canaleja (9-1) 7.vi.1982 Castañar quemado 1978 resto gramineas y suelo -2 a -5 cms R01047 Pseudosinella ". Biotope: grass and soil in a chestnut burning grove. Deposited in the Museo Nacional de Ciencias Naturales-CSIC ( MNCN), Madrid ( Spain).

Other material. Slide MNCN 115coll2003(4)86 (1 specimen), labeled as: "Zool. Suelo Piedralaves Adrado? 7.vi.1982 6 requemado 1978 y 1980 0-2 cms R01037 1 Pseudosinella "; slide MNCN 115coll2003(4)87 (1 specimen), "Zool. Suelo Piedralaves Adrado? 7.vi.1982 (6-1) 2-4 cms quemado 1978 y 1980 R01038 1 Pseudosinella "; slide MNCN 115coll2003(4)88 (3 specimens), "Zool. Suelo Piedralaves Las Rasillas 7.vi.1982 (8-1) No quemado P. pinea sotobosque aclarado 1,5-4,5 cms R01043 3 Pseudosinella ". Biotope: the word "quemado" or "requemado" means burning.

Description. Maximum length 0,7-1.0 mm (Holotype: 0,68 mm). Apparently without pigment. 3+3 eyes. Ratio antenna/cephalic diagonal 1,3 and 1,4. Antennal segments I/II/III/IV ratios 1/1,42/1,29/2,38. Sensorial setae s of the sensory organ of antennal segment III short and expanded (leaf shaped), with two sensilla on antennal segment II ( Fig. 12 ). Apical region of the antennal segments II and III, with a pseudopore in an internal-ventral position, far from the setae line. Apical vesicle absent from antennal segment IV.

Formula of the labial base ( Fig. 9 ): M1M2rEL1L2 (all setae conspicuously ciliated except r, that is a vestigial microchaeta).

Formula of the dorsal macrochaetae: R011/10/0101+2. Anterior seta to thoracic II pseudopore absent. Abdominal tergite II chaetotaxy: -aBq1q2 ( Fig. 7 ), a as a ciliated microchaeta. In the R complex R0 to R2 are present ( Fig. 8 ). Accessory seta s in the anterior trichobothrial complex of abdominal tergite IV is present ( Fig. 10 ). Seta P on abdominal tergite IV located slightly anterior to the trichobothrium, half of the length of M1 and as ciliated mesochaeta ( Fig. 10 ). Medial seta M1 located at the level of the trichobothrium T2 and pseudopore almost at the same level than M1.

Unguis ( Fig. 11 ) with dental plate occupying 50% of the basal internal edge; basal teeth of similar size, medial tooth well developed, approximately 65-70% from base of total unguis. Unguiculus appendage acuminate, always with a first developed external tooth and a second tooth or, sometimes, a more or less slightly developed serrated lamina. Tibiotarsi with clavate 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 equal than the anteapical; the basal spine reaches just to the tip of the first tooth.

Etymology. The species name is referred to the locality: Valle del Tietar.

Discussion. P. tietarensis sp. nov. has the same chaetotaxy formula that P. cordobensis Simón et al., 1987 and P. a r re t z i Simón, 1981, that have the unguiculus smooth and with a big single teeth respectively; the new species has two teeth. In addition P. cordobensis has seta a from second abdominal segment smooth, four internal teeth on the unguis (the first single tooth at 74% from the basis), and without ungual wing tooth ( Simón et al., 1987). P. a r re t z i has different unguiculus shape ( Table 3 ).

Figures

FIGURES 7 – 12. Pseudosinella tietarensis sp. nov.: 7, chaetotaxy of abdominal segment II; 8, head macrochaetotaxy; 9, labium chaetotaxy; 10, trichobothrial complex of abdominal segment IV; 11, distal part of leg III; 12, second and third