Liphistius keeratikiati Zhan & Xu, 2022
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publication ID |
https://dx.doi.org/10.3897/zookeys.1104.83264 |
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publication LSID |
lsid:zoobank.org:pub:400FB403-5624-4BFA-8C17-F12208C3B564 |
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persistent identifier |
https://treatment.plazi.org/id/A45A1921-8728-4095-9496-EBBED27DD903 |
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taxon LSID |
lsid:zoobank.org:act:A45A1921-8728-4095-9496-EBBED27DD903 |
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treatment provided by |
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scientific name |
Liphistius keeratikiati Zhan & Xu |
| status |
sp. nov. |
Liphistius keeratikiati Zhan & Xu sp. nov.
Fig. 5 View Figure 5
Type material.
Holotype: Thailand • 1 ♂, Chumphon Province, Sawi District, Khao Thalu Subdistrict, Nam Lot Cave. 10.23°N, 98.94°E; alt. 30 m; 25 November 2017; F.X. Liu, D. Li, X. Xu, V. Sivayyapram leg.; XUX-2017-439. Paratypes: Thailand • 1 ♂, 3♀♀, same data as for the holotype; XUX-2017-439, XUX-2017-431, 436, 438.
Diagnosis.
The male of L. keeratikiati sp. nov. can be distinguished from the male of L. fuscus Schwendinger, 1995 in having the paraembolic plate scale-like and arched (Fig. 5A, E View Figure 5 ), and the tibial apophysis slightly wider basally (Fig. 5A-C View Figure 5 ), while in L. fuscus the paraembolic plate is broadly rounded; from the male of L. phuketensis Schwendinger, 1998 in having the tibial apophysis with four setae (Fig. 5B, C View Figure 5 ); from the male of L. schwendingeri Ono, 1988 in having a longer embolus (Fig. 5A, B, E View Figure 5 ), the contrategulum with fewer wrinkles proximally (Fig. 5G View Figure 5 ), and a smaller tegulum (Fig. 5B, C, G View Figure 5 ); from the male of L. hatyai sp. nov. in having the tibial apophysis with longer setae and the paracymbium narrower (Fig. 5A-C View Figure 5 ); from the male of L. inthanon sp. nov. in having the subtegular apophysis absent (Fig. 5B, F View Figure 5 ) and the paraembolic plate scale-like (Fig. 5E View Figure 5 ); from males of other Liphistius species in having the spines on the cumulus slightly separated from setae on the paracymbium (Fig. 5A-C View Figure 5 ).
The female of L. keeratikiati sp. nov. differs from the female of L. fuscus in having the anterior margin of the poreplate slightly curved (Fig. 5H, I View Figure 5 ); from the female of L. phuketensis in having the anterior margin of the poreplate slightly narrower (Fig. 5I View Figure 5 ); from the female of L. schwendingeri in having the receptacular cluster slightly larger (Fig. 5I View Figure 5 ); from females of other Liphistius species in having the arched poreplate lacking lateral edges (Fig. 5I, J View Figure 5 ) and much wider than long (Fig. 5H, I View Figure 5 ), and the central dorsal opening situated in the lower center of the poreplate (Fig. 5H View Figure 5 ).
Description.
Male (holotype). Carapace light yellow, with a few short, scattered bristles; opisthosoma yellow, with 12 tergites, with light brown patches; close to each other, 2-6 larger than others, fifth largest; chelicerae robust, promargin of cheliceral groove with 6 denticles of variable size; labium yellow and separated from sternum; sternum yellow, with a few short setae on anterior tip and many long setae on the elongated posterior tip; legs with strong setae and spines; with white annulations, with 3 tarsal claws; 8 spinnerets. Measurements: BL 15.61, CL 6.92, CW 6.72, OL 7.24, OW 5.07; eye sizes and interdistances: AME 0.09, ALE 0.74, PME 0.43, PLE 0.54, AME-AME 0.12, AME-ALE 0.15, PME-PME 0.03, PME-PLE 0.10, ALE-PLE 0.08, ALE-ALE 0.05, PLE-PLE 0.38, AME-PME 0.07. Labium 1.04 long and 0.76 wide. Sternum 3.02 long, 0.95 wide. Leg I 21.60 (5.41 + 1.81 + 4.68 + 4.79 + 4.91), leg II 23.29 (4.97 + 2.19 + 7.68 + 5.96 + 2.49), leg III 14.64 (missing metatarsus and tarsus) (6.17 +2.87 + 5.60 + NA + NA), leg IV 30.16 (7.69 + 3.08 + 5.97 + 9.31 + 4.11).
Palp: tibial apophysis pronounced elevated, with four tapering spines of similar length (Fig. 5A-C View Figure 5 ); paracymbium with short, strong setae situated at tip (Fig. 5C View Figure 5 ), and 5 tapering spines on elevated cumulus (Fig. 5A, B View Figure 5 ); subtegulum without apophysis (Fig. 5B, F View Figure 5 ); contrategulum with a process distally, and with several wrinkles proximally (Fig. 5B, G View Figure 5 ); tegulum with a dentate edge (Fig. 5B, G View Figure 5 ); embolic parts detached (Fig. 5B View Figure 5 ), paraembolic plate scale-like, semicircular (Fig. 5A, E View Figure 5 ); embolus slender, with a few denticulations at the tip (Fig. 5A, B, G View Figure 5 ).
Female (XUX-2017-431). Carapace light brown, with few short, scattered bristles; opisthosoma gray, with 12 brown tergites, close to each other, 2-6 larger than others, fifth largest; eight eyes on darkened ocular tubercle; chelicerae robust, brown, promargin of chelicerae groove with 11 denticles of variable size; labium yellow, separated from sternum; sternum yellow with several setae; legs with strong hairs and spines; with brown and yellow annulations and 3 tarsal claws; 8 spinnerets. Measurements: BL 16.9, CL 7.21, CW 6.67, OL 9.93, OW 7.57; eye sizes and interdistances: AME 0.07, ALE 0.64, PME 0.30, PLE 0.51, AME-AME 0.08, AME-ALE 0.16, PME-PME 0.06, PME-PLE 0.09, ALE-PLE 0.09, ALE-ALE 0.08, PLE-PLE 0.41, AME-PME 0.09. Labium 1.49 long and 0.76 wide. Sternum 3.40 long, 1.13 wide. Palp 13.37 (4.74 + 2.25 + 3.32 + 3.06), leg I 16.58 (5.65 + 2.72 + 3.62 + 2.92 + 1.67), leg II 19.13 (5.56 + 3.06 + 3.76 + 3.71 + 2.05), leg III 17.14 (4.99 + 2.83 + 3.91 + 3.92 + 2.29), leg IV 24.73 (6.82 + 2.31 + 5.39 + 7.03 + 3.18).
Genitalia: poreplate much wider than long, arched (Fig. 5J View Figure 5 ), lateral edges absent (Fig. 5I View Figure 5 ); central dorsal opening situated in the lower center of poreplate (Fig. 5H View Figure 5 ); receptacular cluster simple (Fig. 5I View Figure 5 ).
Etymology.
The specific name is dedicated to Mr Kaweesak Keeratikiat for providing information on the locality of the species.
Distribution.
South-central Thailand (Chumphon Province) (Fig. 2 View Figure 2 ).
Variation.
Range in female measurements (N = 3): BL 16.45-18.89, CL 7.15-7.49, CW 6.45-7.15, OL 8.79-10.46, OW 6.76-8.99. The number of denticles on the promargin of cheliceral groove varies from 6-13 (N = 3).
Remarks.
Liphistius keeratikiati sp. nov. can be assigned to the Liphistius trang -group according to the morphology of male palp and female genitalia, see the remarks of Liphistius hatyai sp. nov. The new species can be assigned to the species complex C of the Liphistius trang -group. In males, the palp possesses the contrategulum with wrinkles proximally (Fig. 5B, G View Figure 5 ), the tegulum has a dentate edge (Fig. 5C, F, G View Figure 5 ), the spines on the elevated cumulus are slightly, distinctly separated from the setae on the paracymbium, and the apex of the embolus bears a few denticulations (Fig. 5A-C, E, G View Figure 5 ). In females, the poreplate is lacking lateral edges (Fig. 5I View Figure 5 ), arched (Fig. 5J View Figure 5 ), wider than long (Fig. 5H-I View Figure 5 ), and lacking a posterior stalk (Fig. 5H, I View Figure 5 ). Currently, the species complex C contains L. fuscus , L. phuketensis , L. schwendingeri ( Schwendinger et al. 2019), and L. keeratikiati sp. nov.
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.