Bamazomus shanghang Zheng & Gong & Zhang 2024, sp. nov.
Creators: name: Zheng, Tao
name: Gong, Jiaxian
name: Zhang, Feng
Publisher: name: Zenodo
Year: 2024
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Schizomida
Hubbardiidae
Bamazomus
Bamazomus shanghang

description: Bamazomus shanghang sp. nov.
Figs 1, 2, 3, 4, 5, 6, 7, Table 1 上杭巴马加盾
Type material.
Holotype ♂ (MHBU - 2023312-1), China: Fujian Province, Longyan City, Shanghang County, Shanghang National Forest Park, 25.6364 ° N, 116.9097 ° E, 672 m elev., 22. VII. 2023, leg. T. Zheng, J. - X. Gong. Paratype: 1 ♀ (MHBU - 2023312-2), same data as the holotype.
Etymology.
The specific name is a noun in apposition, referring to the name of the type locality.
Diagnosis.
The new species resembles B. siamensis in having three posterior processes and a small, conical protuberance on the posterior margin of flagellum in the male, and spermathecal lobes with several apical apophyses (Cokendolpher and Reddell 1986: figs 2–4; Hansen and Soerensen 1905: pl. 5, fig. 2 g, h), but it can be distinguished by: 1) the absence of duct openings of spermathecal lobes and presence of the incomplete anterior branch of chitinized arch (Fig. 7 A, B) vs duct openings present and anterior branch complete (Cokendolpher and Reddell 1986: figs 2–4); 2) the posterior dorsal process of XII segment of opisthosoma semi-oval, blunt, and short (Figs 2 A, 5 A) vs conical, acuminate, and long (Hansen and Soerensen 1905: pl. 5, fig. 2 h); 3) the presence of Dm 4 on flagellum, with two rows of microsetae placed dorsolaterally next to Dm 1, right row with four microsetae, left row with three microsetae in the male (Figs 5 A – C, 6 A – C) vs Dm 4 and two row of microsetae are absent (Hansen and Soerensen 1905: pl. 5, fig. 2 g, h).
Description.
Holotype Male (Fig. 2 A, B): measurements as in Table 1. Colour: light brownish. Prosoma: anterior process of propeltidium with three setae (pair of setae followed by a single seta) followed by five pairs of dorsal setae (2 + 2 + 2 + 2 + 2); eye spots distinct. Mesopeltidia separated. Metapeltidium divided. Anterior sternum with 14 setae (including two sternapophysial setae); posterior sternum triangular with six setae.
Chelicerae (Fig. 3 A, B): movable finger: serrula with 17 teeth, guard tooth present, with one prominent accessory tooth at subterminal part of movable finger. Fixed finger with two large teeth and four smaller teeth, proximal tooth with one tiny, blunt lateral tooth. Setation: setal group formula: 3–9 – 5 – 4 – 10 – 6 – 1 – 6. G 1 with three spatulate setae; G 2 composed of nine smooth setae; G 3 with five setae, feathered apically and smooth basally; G 4 consisting of four small setae, smooth, basally thick, distally elongated; G 5 A with 10 similarly sized setae, feathered apically and smooth basally, length almost equal to movable finger; G 5 B with six setae, basal two short and smooth, apical four longer and feathered; G 6 with one smooth seta about 3 / 5 of movable finger length; G 7 with seven smooth setae.
Palps (Fig. 4 A, B): 2.05 times longer than propeltidium; trochanter with apical process, blunt apical process with angle of about 70 °; mesal surface of trochanter with two setae near ventral margin and two setae near dorsal margin; with one small mesal spur. Femur 1.7 times longer than high; ventral margin on ectal surface with acuminate setae Fe 1, Fe 5, Fev 1, Fev 2 and one dorsal seta Fed 3; mesal surface with row of four ventral setae (Fmv 1–4) and one dorsal seta Fmd 3. Patella with three acuminate setae Pe and one seta Pme 1 on ventro-ectal surface; with three feathered setae Pm and one seta Pmm 3 on ventro-mesal surface. Setae formula on tibia 3–3 – 5. Tarsal spurs asymmetrical.
Legs: leg I, basitarsal – telotarsal proportions: 32: 5: 6: 6: 7: 6: 12. Femur IV 3.14 times longer than high.
Opisthosoma: tergite I with three pairs of microsetae anteriorly and one pair of Dm; tergite II with three pairs of microsetae anteriorly and pair of Dm; tergites III – VII with one pair of Dm setae each; tergite VIII with pairs Dm and Dl 2; tergite IX with pairs Dm, Dl 1 and Dl 2. Segments X, XI telescoped, with setal pairs Dm, Dl 1, Dl 2, Vm 2, Vl 1, Vl 2, and single Vm 1; segment XII with Dm, Dl 1, Dl 2, Vm 2, Vl 1, Vl 2, and single Vm 1, with posterodorsal process. Sternites II – VII with two irregular rows of setae each; genital plate with scattered setae.
Flagellum (Figs 5 A – C, 6 A – C): nearly rectangular in shape; 1.94 times longer than wide; posterior margin with three posterior processes; dorsal side with small, conical protuberance; setation: seta Dm 1 situate base of bulb, two rows of microseate located dorsolaterally next to Dm 1, right row with four microsetae, left row with three microsetae; Dm 4 at same level as Dl 3; Dl 2 anterior to Dm 4; both sides of pedicel with Dl 1; Vm 1 posterior to Vm 2; Vm 3 anterior to Vl 1; Vm 5 at same level as Vl 2; two Msp between Vl 1 and Vl 2.
Female. Paratype (Fig. 2 C, D): measurements as in Table 1. Colour: light brownish. Palps (Fig. 4 C, D) similar to male, 1.82 times longer than propeltidium, setae formula on tibia 4–2 – 3. Prosoma: anterior process of propeltidium with three setae (pair of setae followed by single seta) followed by five pairs of dorsal setae. Flagellum (Figs 5 D – F, 6 D – F) with three flagellomeres, setation: Vl 1 anterior to Dl 2; Vm 1 at same level as Vm 2; Dl 4 posterior to Dm 4; Vm 3 anterior to Vl 1; Dl 3 at same level as Vl 2; Dl 1 posterior to Vm 2; Vm 5 posterior to Dl 2. Spermathecae (Fig. 7 A, B) with five or six pairs of lobes, short and thick, with some apical apophyses. Chitinized arch heart-shaped, with a wide LT and with curved, wide and incomplete anterior AB. Gonopod distal bifurcation. Chelicerae (Fig. 3 C, D): movable finger with one prominent accessory tooth; serrula with 17 teeth. Fixed finger with two large teeth and six smaller teeth, proximal tooth with one tiny, blunt lateral tooth. Setal group formula 3–9 – 5 – 4 – 10 – 6 – 1 – 6.
Comments.
The female of new species has a more pronounced apical process of the palpal trochanter than the male, which is uncommon and generally opposite to other schizomids. Usually, there are two or three G 4 on the chelicerae in Hubbardiidae, and these are concentrated in the lower row. G 4 are easily confused with G 7, but it is believed that G 4 can be distinguished by their short setae which are thickened at the base (vs long setae which are not basally thickened), as seen in the new species.
Habitats.
The new species was collected under a heap of leaf-covered stones. The female specimen was collected from the underside of a stone, while the male was found in the ground under the stones.
Distribution.
This species is known only from the type locality (Fig. 1).
description: Published as part of Zheng, Tao, Gong, Jiaxian & Zhang, Feng, 2024, Two new species of Bamazomus Harvey, 1992 from southern China (Schizomida, Hubbardiidae), pp. 337-353 in ZooKeys 1204 on pages 337-353, DOI: 10.3897/zookeys.1204.121754