ANew Species of the Genus Anatemnus ( Pseudoscorpiones , Atemnidae ) from China

The pseudoscorpions genus Anatemnus belongs to subfamily Atemninae, family Atemnidae. It was erected by Beier in 1932 for the type species Chelifer javanus Thorell, 1883. This genus includes 18 known species which are widespread in Africa, Americas, and Asia. Most of them (11 species) distribute in Southeast Asia, and only one species, A. orites Thorell [1], was recorded from China [2, 3]. Anatemnus is characterized by the trichobothrial pattern of fixed chelal finger: the distance trichobothrium it from fingertip equals that of ist and isb, distance between est and esb is longer than that of ist and isb; pedipalpal patella expands not obviously and nearly oval [4]. Among the pseudoscorpions collected from Dong’an Town, Chaozhou City, Guangdong Province in the summer of 2011, we found one Anatemnus species new to science and described it here as A. chaozhouensis sp. nov.


Introduction
The pseudoscorpions genus Anatemnus belongs to subfamily Atemninae, family Atemnidae.It was erected by Beier in 1932 for the type species Chelifer javanus Thorell, 1883.This genus includes 18 known species which are widespread in Africa, Americas, and Asia.Most of them (11 species) distribute in Southeast Asia, and only one species, A. orites Thorell [1], was recorded from China [2,3].
Anatemnus is characterized by the trichobothrial pattern of fixed chelal finger: the distance trichobothrium it from fingertip equals that of ist and isb, distance between est and esb is longer than that of ist and isb; pedipalpal patella expands not obviously and nearly oval [4].
Among the pseudoscorpions collected from Dong'an Town, Chaozhou City, Guangdong Province in the summer of 2011, we found one Anatemnus species new to science and described it here as A. chaozhouensis sp.nov.

Materials and Methods
The material was preserved in 75% alcohol.The patterns of description and terminology follow [5,6].Terminology of genitalia follows [7].All measurements are given in millimeters.Drawings were made with the aid of a prism mounted above the eyepiece of a compound microscope.Photographs were taken with a Leica M165 stereomicroscope.Detailed examination was carried out with a Nikon YS100 general optical microscope.Temporary slide mounts were made in glycerol.
The following abbreviations are used in the text for trichobothria-b: basal; sb: sub-basal; st: sub-terminal; t: terminal; ib: interior basal; isb: interior sub-basal; ist: interior sub-terminal; it: interior terminal; eb: exterior basal; esb: exterior sub-basal; est: exterior sub-terminal; et: exterior terminal.The following abbreviations are used in the text for male genitalia-A: lateral apodeme; B: hooked branch; C: sclerotized bar; D: longitudinal fold of medial diverticulum; E: ejaculatory canal atrium; F: lateral rods; G: dorsal apodeme; H: ventral diverticulum; L: lateral lip of lateral apodeme.The specimens referred here are deposited in the Museum of Hebei University (MHBU), Baoding City, China.

Diagnosis.
This new species is characteristic by: carapace with two distinct developed eyespots; color of carapace, pedipalp, tergite XI and sternite XI dark brown (Figure 1); pedipalpal femur with a few fine granules interiorly; trochanter with a round dorsal tubercle.

Etymology.
The specific name refers to the type locality.

Description.
Setae of body straight and dentate apically; carapace, pedipalp, tergite XI, and sternite XI dark brown in both males and females (Figure 1).
Carapace (Figure 2(a)) smooth and with two distinct and slightly raised eyespots, without transverse furrow, 32 setae in total, of which 4 at anterior margin and 6 at posterior margin.
Pedipalps (Figure 2(f)) dark reddish, only femur with granules interiorly; trochanter with a round dorsal tubercle, patella pedicel slender; fixed finger (Figure 2(e)) with about 32-34 pointed teeth of equal length, movable finger with about 35-42 teeth; trichobothrial pattern: st situated midway between sb and t, it of fixed finger well removed from the finger tip and distance from finger tip equal to the distance between ist and isb, distance between esb and est longer than that of isb and ist.
Leg IV with one tactile seta at the base of tarsus (Figure 2(l)) (TS = 0.16-0.21).3.1.8.Remarks.This new species is similar to A. orites which is also distributed in China; however, it differs from the latter in having two distinct and slightly raised eyespots, while eyespots is indistinct in A. orites; slender chela (with pedicel 2.89-3.09and without pedicel 2.68-2.82times as long as broad versus 2.2 times in A. orites).This new species is also similar to A. angustus Redikorzev, 1938 distributed in Bhutan, India, Malaysia, and Vietnam, but it can be distinguished from the latter by that: pedipalpal trochanter with a round dorsal tubercle, while tubercle is coniform in A. angustus; only pedipalpal femur slightly granulated interiorly, while all of the pedipalp is with slightly dense granules in A. angustus; pedipalp is with consistent dark color, pedipalpal femur and patella are more bright than chela in A. angustus.

3. 1 . 7 .
Habitat.According to field record, this new species is collected under the bark of the Olea europaea L. trees.