SOME ONISCIDEA AND DIPLOPODA FROM THE RETEZAT MASSIF . FIRST RECORD OF PORCELLIUM PRODUCTUM FRANKENBERGER , 1940 AND PORCELLIUM RECURVATUM VERHOEFF , 1901 IN ROMANIA

Our paper presents a survay of Oniscidea and the Diplopoda from the Retezat Massif in Romania. The first records in Romania of the species Porcellium productum and Porcellium recurvatum have been presented.

lected fauna only from the crystalline area of the massif, positioning sampling points with a Garmin 12 XL GPS device (Fig. 1).
In the first field trip, between the 11 th -12 th of June 2006, the fauna was collected by hand, using a tweezer, and by 9 pitfall traps placed nearby the Gemenele Chalet (1780 m altitude).
During the second field trip, between the 10 th -15 th of September 2006, 21 pitfall traps (in groups of three) were placed along the altitudinal gradient, between Gura Zlata (805 m altitude) and Radeş Sheepfold (1790 m altitude), taking into account the type of vegetation.The stations of the pitfall traps, along with their altitude and type of vegetation, are presented in Table 1.Additionally, in the same period, 9 pitfall traps was placed at Tăul Răsucit.Also, we have used the material collected between the 8 th of August and the 4 th of October 1971 and between the 2 nd and the 8 th of November 1972 by Dr. Eleonora Erhan.This material was not identified up to now and is housed in the collection of the Institute of Speleology "Emil Racoviţă".
The drawings of P. recurvatum and P. productum were made with an Olympus CH2 camera lucida.
A third species, Porcellium horvathi (Dollfus, 1901) was described from Retezat and so, possibly, might be one of the species found by the present authors.But as Porcellium horvathi is a nomen dubium (Schmalfuss, 2003), we consider our finding as the first record of both P. productum and P. recurvatum.
Porcellium productum was found only once (one male) at the upper limit between the beech and the coniferous forests at an altitude of 1340 m, at mid-distance between the Gura Zlata Chalet and the Radeş Sheepfold (GPS positioning: 45.36917 0 lat.N and 22.77181 0 long.E).The species is easily recognizable by the characteristic endopodite with a widened base and the strongly curved, hook-like distal part and the roughly triangular exopodite with rounded corners (Figs.2A and 2B).
Porcellium recurvatum is even easier to recognize by its very characteristic endopodite with the distal part curved in a semicircle and then bent dorsally like a hook and by the small, rounded exopodite (Figs.2C and 2D).
Porcellium recurvatum was also found only once (one male) at an altitude of 805 m in a beech forest relatively close to the Gura Zlata Chalet (45.39125 0 lat.N and 22.77278 0 long.E).As Porcellium recurvatum was found at altitudes between 700 m (Pangeon Mountain -Greece) and 2900 m (Olympus Massif -Greece) (Schmalfuss, 1993), our find represents only an intermediate altitude for this species.Further investigations will show if Porcellium recurvatum -a species known to inhabit forests of Fagus and Quercus (in Greece) and also mixed forests of Fagus, Pinus and Abies -inhabits the same wide range of types of vegetation in the Retezat Massif.

Fig. 1 -
Fig. 1 -GPS positioning of the sampling sites within the Retezat Massif.