Chaerilus wrzecionkoi Kovařík, 2012

Kovařík, František, 2012, Five new species of Chaerilus Simon, 1877 from China, Indonesia, Malaysia, Philippines, Thailand, and Vietnam (Scorpiones: Chaerilidae), Euscorpius 149, pp. 1-14 : 11-13

Chaerilus wrzecionkoi Kovařík , sp. n.

( Figs. 62–77)

TYPE LOCALITY AND TYPE REPOSITORY. China, Tibet, Tomi (Tangmai), 30 km W of Donjung, 2075 m a.s.l.; FKCP.

TYPE MATERIAL. China, Tibet, Tomi (Tangmai), 30 km W of Donjung, 2075 m a.s.l., 23.VI.2007, 2♂ 2♀

(holotype, allotype and paratypes), leg. A. Wrzecionko; FKCP.

ETYMOLOGY. Named after Antonin Wrzecionko, who collected the type series.

DIAGNOSIS. Total length 33–41 mm. Two pairs of lateral eyes and one pair of median eyes. Male has a slightly longer pedipalp chela. Color dark brown to black. Manus of male pedipalp robust ( Fig. 68). Chela length/ width ratio in adults lower than 2.6. Movable finger of pedipalp with 8 cutting edges. Chela of pedipalp with 7 or 8 granulated carinae. Patella with 5 carinae, femur with 4 or 5 carinae. Pectinal teeth number 3–5. Carapace granulated. Anterior margin of carapace straight. Mesosomal tergites granulated. Seventh sternite granular, without carinae, other sternites smooth. First metasomal segment with 10 carinae, second thought fourth segments with 8 carinae, fifth segment with 7 carinae.

DESCRIPTION. Total length 33–41 mm. Two pairs of lateral eyes and one pair of median eyes present. The male has relatively larger pectens and telson, and differs from the female also in shape of the pedipalp manus and in having a slightly longer pedipalp chela. Pectinal teeth number 3–5 (females 3x4, 1x4; males 1x4, 3x5). For the position and distribution of trichobothria see Figs. 68– 74. Trichobothrium d2 is situated on the dorsal surface and d3 on the internal surface of the patella ( Fig. 69).

COLORATION. The color is dark brown to black.

MESOSOMA AND CARAPACE. The entire carapace is sparsely covered by large granules, the larger of which form two longitudinal, symmetrical carinae. The anterior margin of carapace is straight. The mesosomal tergites are granulated, the first to third segments weakly and the last segment densely. The seventh sternite lacks carinae and is covered by granules of unequal size, several of them large and hemispherical ( Fig. 65). Other sternites are smooth. The fifth sternite has a glossy zone in the middle of posterior margin.

METASOMA AND TELSON. The first metasomal segment bears 10 carinae, the second thought fourth segments bear eight carinae, and the fifth segment bears seven carinae of which one ventral carina posteriorly branches to form the letter “Y“. All carinae are composed of sparse and denticulate granules. The spaces between carinae are irregularly granulated on lateral surfaces; the dorsal surface is smooth. All segments are sparsely hirsute. The telson is elongate, smooth and sparsely hirsute.

PEDIPALPS. The movable finger has eight cutting edges. The chela has seven or eight granulated carinae. The carina on the externolateral surface of chela may be incomplete. The patella has five carinae and the femur has four or five carinae. All carinae consist of widely spaced rounded granules. The spaces between carinae are covered by unevenly spaced small granules.

LEGS. The legs are hirsute, without bristlecombs and carinae. The femora bear solitary granules.

MEASUREMENTS IN MM. Total length of male holotype 37; carapace length 4.3, width 4.4; metasoma and telson length 19.1; first metasomal segment length 2.0, width 2.4; second metasomal segment length 2.4, width 2.0; third metasomal segment length 2.4, width 2; fourth metasomal segment length 2.7, width 1.9; fifth metasomal segment length 4.7, width 1.8; telson length 4.9; pedipalp femur length 4.5, width 1.6; pedipalp patella length 4.8, width 1.7; chela length 9; manus width 3.5; movable finger length 5.

Total length of female allotype 39; carapace length 4.5, width 5.1; metasoma and telson length 18.2; first metasomal segment length 1.8, width 2.7; second metasomal segment length 2.2, width 2.2; third metasomal segment length 2.2, width 2; fourth metasomal segment length 2.7, width 1.8; fifth metasomal segment length 4.4, width 1.6; telson length 4.9; pedipalp femur length 3.7, width 1.7; pedipalp patella length 4, width 2.2; chela length 8.3; manus width 3.5; movable finger length 4.5.

AFFINITIES. The described features distinguish C. wrzecionkoi sp. n. from all other species of the genus. They are recounted in the key. Morphologically closest are C. mainlingensis Di et Zhu, 2009 and C. tryznai Kovařík, 2000 . Both these species have manus and patella of pedipalp narrower and longer. C. mainlingensis Di et Zhu, 2009 also differs in having four distinct carinae on the seventh sternite; C. wrzecionkoi sp. n. has the seventh sternite granulated but without carinae ( Fig. 65).