Microcreagrina madeirensis Mahnert, 1993

Zaragoza, Juan A., 2010, Arcanobisium, a remarkable new genus, representing a new subfamily with a relictual distribution from eastern Spain (Arachnida: Pseudoscorpiones: Syarinidae), Zootaxa 2491, pp. 41-60 : 50-51

Microcreagrina madeirensis Mahnert, 1993

Microcreagrina madeirensis Mahnert 1993: 971 –992, figs 40–42.

Material examined. Madeira archipelago, Porto Santo island: Pico Ana Ferreira, 4 October 2008: 3 females, 1 male; Dunas de Vila Baleira, 4 October 2008: 2 tritonymphs; Miradouro das Flores, 5 October 2008: 1 female; Pico da Cabrita, 8 October 2008: 1 female. All specimens collected by Luis Crespo and Pedro Cardoso, deposited in DEUA.

Supplementary description. Opisthosoma elongate, tergites and sternites X–XI well developed and dorsal-ventrally visible. Pleural membrane striate. All sternites laterally with pores, probably glandular, sternites X–XI with pores spread over entire surface of, resembling the small circular structures described by Vachon (1952, 1954) for Pseudoblothrus , but in the latter observed in the pleura. Three pairs of glandular setae within male genital atrium. Male sternite IV without cribrate areas or associated glands; no gland openings on male sternite VI. Stigmata III with 3 setae, IV with 4 setae.

Carapace with prominent, triangular epistome, apex rounded. Cheliceral galea long, simple; subgaleal seta of the movable chelal finger, situated 0.70–0.73 from base, dental row ending far basal of subgaleal seta.

Apex of pedipalpal coxa long and triangular, with 2 distal setae. Four antiaxial feather-shaped setae on base of fixed finger. Trichobothrium t shorter and slightly thicker than others on movable pedipalpal finger, acuminate, not lanceolate or flattened, bent backward towards base of finger, other trichobothria of movable finger nearly perpendicular to surface.

Junction between femur and patella of leg IV perpendicular, patella distinctly longer than femur. Subterminal setae dentate.

Remarks. The species is endemic to the Madeira archipelago, being known from the islands of Desertas, Madeira and Porto Santo ( Mahnert 2008).