CHTHONIUS ( EPHIPPIOCHTHONIUS ) LAGADINI N . SP . ( CHTHONIIDAE , PSEUDOSCORPIONES ) , A NEW ENDEMIC EPIGEAN PSEUDOSCORPION FROM MACEDONIA

A new species of epigean pseudoscorpion pertaining to the genus Chthonius C. l. Koch 1843 from Macedonia is erected. Its relationship to phenetically close congeners is briefly discussed. The new species, Chthonius (Ephippiochthonius) lagadini n. sp. is a relict form presently known only from its type locality (lagadin, nr. Ohrid, Macedonia).


INTrODuCTION
The low number of known taxa of a particular group can be attributed to several possible reasons: the interest of specialists might be focused on other groups of animals, the small body size and cryptic way of life hinders the collection of samples needed for study, the densities of specimens of a particular group might be low (especially troglobiotic and troglophilic forms), and the habitats these animals populate may be inaccessible (Ćurčić, 2009).
In 1995 a sample of two soil-dwelling false scorpions was collected in lagadin, nr.Ohrid, republic of Macedonia.A thorough analysis has shown that both specimens belong to the genus Chthonius C. l.Koch (subgenus Ephippiochthonius Beier), repre-senting a new taxon Chthonius (Ephippiochthonius) lagadini n. sp.
Here are the results of the study of Chthonius (Ephippiochthonius) lagadini n. sp.Etymology.
-After the locality of lagadin, cca 10 km from Ohrid, Macedonia.
In the male, sternite II carries seven setae, sternite III carries seven setae on each side of a v-shaped opening and seven posterior setae and three small setae along each of the stigma.Sternite Iv has eight setae and two small suprastigmatic setae on either side, and sternites v-X carry 9 -8 -8 -8 -7 -7 setae.Pleural membranes are granulostriate.
Cheliceral galea is rounded and clearly visible (Figs. 2,11 and 12).Fixed cheliceral finger with six long setae, a movable finger with one such seta (Figs. 2,11 and 12).The flagellum has nine blades, only two distal blades pinnate anteriorly; other flagellar setae are smooth and accuminate, diminishing in size from distal to proximal.Dentation of cheliceral fingers as in Figs. 2, 11 and 12.
The manducatory process (apex of pedipalpal coxa) has two long setae, trochantic foramen with two setae.All pedipalpal articles are smooth and elongated (Figs. 7,8,9,10 and 14).Pedipalpal femur and tibia are distally dilated.The pedipalpal chelal palm widens at its mid-line (Figs. 7 and 10).The fixed chelal finger is with 16 (in females) or 18 (in males) asymmetrical, small and close teeth which are interspaced and proximally form a dental lamella; i.e. they become rounded, low and small.The fixed chelal finger is with eight trichobothria, and movable finger with four such setae.
Coxa II has 10 (in females) or 5 spines (in males), coxa III has 6 -7 (female) and 4 -5 spines (male).Tibia Iv has a single seta, metatarsus Iv, and tarsus Iv with one long seta (Figs. 6 and 9, Table 1).The disposition of these setae may be subject to some variation.
Morphometric ratios and linear measurements are presented in Table 1.