New distributional data on the Symphyla ( Myriapoda ) in Spain

About 15 years after the publication of the last information on the distribution of the Symphyla in Spain (Domínguez, 1992; Mas & Serra, 1993), new data on eight species are provided. The 148 examined specimens come from two field trips performed in Barcelona province (November 2006) and Minorca (Februar 2007), and from material donated by several researchers. Specimens from the field trips were collected from soil samples using a Kempson apparatus. Since the taxonomic features to identify the symphylan species are often difficult to assess with a light microscope (Turner & Edwards, 1974), most of the specimens were identified with a scanning electron microscope following the keys of Edwards (1959), Scheller (1978), and Domínguez (1992). Data on the distribution of the identified species are sorted by locality, with additional information about date, collectors, environment, altitude, geographic coordinates and sex (if known). Juvenile stages are indicated with the number of pairs of legs (lp). Some remarks on the taxonomic features used for the identification are explained and depicted with SEM-micrographs.

REMARKS: This species is characterized by a distinctly emarginated posterior margin of the second tergite of the trunk and by the homogeneity of the setae on the second tergite (Fig. 1A).Other taxonomic features are the absence of a ventral process on the femora of the first pair of legs in the females and the presence of one elongate seta on this same area (Fig. 1B).
Jábaga (Cuenca)  REMARKS: Main taxonomical features of this species are a transverse row of six setae on the first tergite of the trunk and the presence of at least one seta between inner basal seta and apical seta on the triangular appendages of the anterior tergites (Fig. 1C).

Symphylella elongata
REMARKS: This species also has a transverse row of six setae on the first tergite of the trunk, but it differs from S. vulgaris in the absence of setae on the inner edge between inner basal and apical setae on the triangular appendages of the anterior tergites (Fig. 1D).
REMARKS: The subgenus Scolopendrellopsis Bagnall, 1913 differs from the subgenus Symphylellopsis Ribaut, 1931 in the shape of the triangular appendages, which are broader than long in the former and more or less digitiform and longer than broad in the latter.The presence of a seta inserted between inner basal and apical setae is diagnostic of this species.Ribaut, 1931 Jábaga (Cuenca) (collected by María José Luciáñez, in a Pinus nigra forest): 5 adults, 1 juvenile with 10 lp (June 2005).

REMARKS: This species differs from all other
Scolopendrellopsis species known so far in the transverse division of the third trunk tergite into anterior and posterior subtergites (Fig. 2A).This feature is difficult to discern with a light microscope, since the border of the subtergites (or scuta) is often diffuse (personal observation).(Hansen, 1903) La REMARKS: This species is easily confused with Scolopendrellopsis (Symphylellopsis) selgae Domínguez, 1985, which is very common in Spain as well.The two species differ in the morphology of the first tergite and in the chaetotaxy: Scolopendrellopsis (Symphylellopsis) subnuda has a smaller and trapezoidal first tergite and one more pair of setae on the third tergite of the trunk.The reticulate surface of the anterior dorsal part of the head is also characteristic for this species only (Fig. 2B).
REMARKS: Representatives of Geophilella are the only scolopendrellids with no triangular appendages on the tergites.All tergites are reduced to paired oval plaques bearing few setae, except for the first tergite which forms paired lon-gitudinal bars bordering the sub-trapezoidal tergum laterally (Fig. 2D).