Pardosa zhishengi, Omelko, 2024

Omelko, Mikhail M., 2024, New data on wolf spiders (Araneae: Lycosidae) from Laos, Raffles Bulletin of Zoology 72, pp. 235-251 : 238-241

Pardosa zhishengi , new species.

( Figs. 6–21 , 52–53 )

Material examined. Holotype: Male ( ZMMU), LAOS, Champasak Prov., env. of Tad E-Tu resort, 15°11′37.40″N 106° 5′57.28″E, coll. M.M. Omelko, 1–6 November 2013 . Paratypes: 2 males, 1 female ( ZMMU), same place, dates and collector .

Etymology. The specific name is a patronym in honour of my colleague Zhi-Sheng Zhang (Chongqing, China), a prominent taxonomist for his contribution to the study of Asian spiders.

Diagnosis. By general appearance and structure of its copulatory organs (shape of cymbium, palea, tegular apophysis, and septum) both sexes of Pardosa zhishengi , new species, are similar to P. parathompsoni known from south China and India. Males of new species may be distinguished by the following features: 1) sperm duct (SD) is bent at an angle of almost 90° in ventral view (vs. almost straight, cf. Figs. 10, 13 and figs. 2D, F in Wang & Zhang (2014)), 2) tegular apophysis (TA) pointing prolaterally (vs. anterioprolaterally, Figs. 10, 13 and fig. 2D, F in Wang & Zhang (2014)), 3) terminal apophysis (Tr) long (vs. short, cf. Figs. 14, 17, 18 and figs. 1C, 2 G–H in Wang & Zhang (2014)). Females of new species may be distinguished by: 1) base of septum (SB) with semi-transparent “wings” (SW) on its anterior edge (vs. lacking such structures, cf. Figs. 19–20 and figs. 1D, 2I in Wang & Zhang (2014)), 2) receptacles (Re) with a strong constriction in the middle part (vs. of almost uniform width, cf. Fig. 21 and figs. 1E, 2J in Wang & Zhang (2014)).

Description. Male (holotype) ( Figs. 6–7 ). Total length 6.12. Carapace 3.21 long, 2.38 wide. Opisthosoma 2.89 long, 1.65 wide. Colouration. Carapace black with yellow median band widened near eye field. Widened part of median band with couple of black spots. Eye field black. Lateral bands yellow, distinct. Fovea thin, black. Clypeus and chelicerae black. Labium and endites black with yellow edges. Sternum black with yellow longitudinal stripe and three pairs of yellow spots near its edges.

Eye sizes and interdistances: AME 0.14, ALE 0.12, PME 0.31, PLE 0.26; AME–AME 0.08, AME–ALE 0.04, PME– PME 0.27, PME–PLE 0.33, AME–PME 0.12, ALE–PME 0.16; clypeus height 0.16.

Palpal femur black; patella dark brown; tibia and cymbium black. For palp and leg measurements, see Table 3. Coxae I light brown ventrally and black laterally, II–IV light brown; femora I dorsally brown, laterally and ventrally black with yellow proximal and distal parts, femora I dorsally and ventrally brown, laterally black with yellow proximal and distal parts; III–IV brown with irregular black spots; patellae I–IV light brown; tibiae and metatarsi I–IV yellowish, without annulation; tarsi I–IV yellowish. For leg spination, see Table 4.

Dorsal part of the opisthosoma black, with black cardiac mark bordered with yellow stripes and series of yellow spots posteriorly. Lateral sides of the opisthosoma black with lots of white spots. Ventral part light brown with grey longitudinal stripe. Spinnerets brown.

Palp as shown in Figs. 10–18 . Cymbium ca. 1.92 times longer than bulb. Tegulum (Te) with several wrinkles (TW) on its retrolateral side. Subtegulum (St) oval, located prolaterally. Tegular apophysis (TA) large, widened proximally with pointed tip curved ventrally. Terminal apophysis (Tr) long, crescent-like, sharply pointed. Conductor (Co) thin, semi-transparent. Palea (Pa) large, chitinised prolaterally with semi-transparent peak (Pe). Embolus (Em) long, thin, wavy near its tip.

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Female (one of the paratypes) ( Figs. 8–9 ). Total length 6.78. Carapace 3.39 long, 2.44 wide. Opisthosoma 3.61 long, 2.09 wide. Colouration. Carapace dorsally like in male but much lighter. Clypeus yellow, chelicerae light brown. Labium grey with light brown outer edge. Endites light brown. Sternum light brown without pattern.

Eye sizes and interdistances: AME 0.12, ALE 0.10, PME 0.36, PLE 0.31; AME–AME 0.12, AME–ALE 0.05, PME–

PME 0.30, PME–PLE 0.39, AME–PME 0.15, ALE–PME 0.12; clypeus height 0.21.

Palpal femur light brown with grey spots distally; other segments light brown. For palp and legs measurements see Table 5. Coxae I–IV light brown; femora I–IV light brown with greyish spots; patellae I–IV light brown; tibiae and metatarsi I–IV light brown, without annulation; tarsi I–IV light brown. For leg spination see Table 6.

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Dorsal part of the opisthosoma like in males but much lighter. Lateral sides of the opisthosoma light brown with grey spots. Ventral part light yellow. Spinnerets light brown.

Epigyne as shown in Figs. 19–21 . Septum anchor-shaped, septal base (SB) with kind of semi-transparent “wings” (SW) on its anterior edge, long stem (SS) narrowing posteriorly and widening anteriorly. Hoods (Ho) triangular, widely spaced (distance between hoods 1.4 times of hood length). Receptacles (Re) large, kidney-shaped with strong constriction in their middle part, spaced by a distance ca. 2.5 times their width. Copulatory ducts (CD) shorter than receptacles’ length, slightly curved.

Distribution. Only known from the type locality in Laos ( Figs. 52–53 ).

Figures

Figs. 6–9. Habitus of Pardosa zhishengi, new species. 6 – male, dorsal; 7 – ditto, ventral; 8 – female, dorsal; 9 – ditto, ventral. Scale: 2 mm.

Figs. 10–18. Male palp (10–11), bulb (12–15) and embolic division (16–18) of Pardosa zhishengi, new species. 10, 13, 16 – ventral; 11, 14 – retrolateral; 12 – prolateral; 15, 17 – anterior; 18 – ventro-retrolateral. Scale: 0.2 mm (10–15), 0.1 mm (16–18). Abbreviations: Co – conductor, Em – embolus, Pa – palea, Pe – paleal peack, SD – sperm duct, St – subtegulum, TA – tegular apophysis, Te – tegulum, Tr – terminal apophysis, TW – tegular wrinkles.

Figs. 19–21. Epigyne of Pardosa zhishengi, new species. 19, 20 – ventral; 21 – dorsal. Scale: 0.1 mm. Abbreviations: CD – copulatory duct, Ho – hood, Re – receptacle, SB – septal base, SS – septal stem, SW – septal “wings”.

Figs. 52–53. Collecting localities of (1) Arctosa delaportei Omelko & Marusik, 2022, Trochosa bannaensis Yin & Chen, 1995, T. ruricoloides Schenkel, 1963, Wadicosa daliensis Yin, Peng & Zhang, 1997, (2) Pardosa zhishengi, new species., T. ruricoloides.