Pseudosinella torcuatoensis, Simón, José C. & Palacios-Vargas, José G., 2008

Simón, José C. & Palacios-Vargas, José G., 2008, Four new Pseudosinella (Collembola: Entomobryidae) from La Rioja, Spain, Zootaxa 1728, pp. 59-68 : 66-67

Pseudosinella torcuatoensis sp. nov.

Figs. 13–16

Material examined. Spain, La Rioja, Torcuato: female (holotype) and two specimens (paratypes), from natural vegetation, soil sample 4 TOZN 4, 20.i.2004. C. Gutiérrez Martín coll. All the specimens on slides in the laboratory of Zoology of the Universidad Autónoma de Madrid, Spain.

Etymology. This species is named after La Villa de San Torcuato, La Rioja.

Description. Length 1.1 mm. Body without pigment, 3+3 eyes, two anterior corneola and one posterior far from the others.

Antenna without pigment, its proportion with head 1.3. Ant. IV without apical bulb. Apical organ of third antennal segment with two small rods.

Head with macrosetae R0, R1 and R2, T and Po, macrosetae R3 and S absent. Labial formula: M 1m 2rel1l2 ( Fig. 13 ). Differentiated setae of outer labial papilla (E) straight and its apex almost reaching apex of papilla, with three sublobular setae on the external part of maxillary outer lobe. Four ciliated setae along the ventral cephalic furrow. Four triangular labral papillae.

Legs without scales, tibiotarsus with ciliate and acuminate macrosetae, with acuminate tenent hair, its rate to the length of internal unguis 0.78. Unguis with distal inner unpaired tooth, located at 59 % of the length of internal ungual membrane. Inner basal paired teeth with the distal tooth twice the basal tooth and inserted about 59 % the length of inner membrane from the base, the other tooth inserted about 50 % the inner length of ungues ( Fig. 14 ). Unguiculus smooth and about 69 % the length of ungues. Legs without scales, tibiotarsus with ciliate and acuminate macrosetae.

Dorsal macrosetae formula: R011/00/0101+2. Chaetotaxy of Abd. II: paBq1q2 ( Fig. 15 ). Anterior bothriotrical complex of Abd. IV with accesory seta “s” ( Fig. 16 ).

Ventral tube with 4+4 smooth distal setae and 5+ 5 in the posterior medial region. Retinaculum with 4+4 teeth and one seta on the base. Distal part of manubrium with 2 pseudopores, 2 internal and 2 external setae. Mucro bidentate, teeth of different size, mucronal spines smooth.

Remarks. This new species presents the same dorsal chaetotaxy as P. aramendiai Beruete & Jordana , P. azorica Gama , P. burgalensis Jordana & Baquero , P. berueti Jordana & Baquero , P. huescensis Gisin &Gama , P. intemerata Gisin & Gama, P. l e s i Jordana et al., P. lleidensis Gama , P. obanae Gruia , P. subduodecima Gisin & Gama and P. theodoridesi Gisin & Gama. Differences between P. torcuatoensis sp. nov. and similar species can be seen in the table 4.

Species Author Eyes Dorsal macrosetae T Labial formula yuca Christiansen 3 R001/00/0101+2 absent M1M2rEL1L2 reddelli Christiansen 3 R000/00/0101+2 absent m 1m 2-el1l2

lleidensis Gama, 1984 2–3 R011/00/0101+2 present M1M2REL1L2 burgalensis Jordana & Baquero 2–3 R011/00/0101+2 present M1M2REL1L2 torcuatoensis sp nov. 3 R011/00/0101+2 present M 1m 2rel1l2

continued.

This contribution was possible thanks to the economic support given to the project: Estudio del efecto de los cambios del uso del suelo en la biodiversidad de la fauna edáfica de La Rioja: una aproximación a escala regional. REN2002-02550. Dr. Carmen Gutiérrez Martín, principal of the project. Authors are participants of the program of International exchange between the Universidad Nacional Autónoma de México and Universidad Autónoma de Madrid. The manuscript was kindly reviewed by Dr. Felipe Soto Adames, Illinois Natural History Survey, USA and Dr. Kenneth A. Christiansen, Grinnell College; Iowa, USA.

Figures

FIGURES 13 – 16. Pseudosinella torcuatoensis sp. nov.: 13, labium; 14, apex of tibiotarsus III, unguis and unguiculus; 15, chaetotaxy of Abd. II; 16, chaetotaxy of Abd. IV.