New species of Langona Simon, 1901 and Neaetha Simon, 1884 (Araneae Salticidae) from Thailand Author Żabka, Marek 0000-0001-8903-3009 Siedlce University of Natural Sciences and Humanities, Faculty of Exact and Natural Sciences, B. Prusa 14, 08 - 110 Siedlce, Poland marek. zabka @ uph. edu. pl; https: // orcid. org / 0000 - 0001 - 8903 - 3009 marek.zabka@uph.edu.pl Author Patoleta, Barbara M. 0000-0002-6931-7597 Siedlce University of Natural Sciences and Humanities, Faculty of Exact and Natural Sciences, B. Prusa 14, 08 - 110 Siedlce, Poland marek. zabka @ uph. edu. pl; https: // orcid. org / 0000 - 0001 - 8903 - 3009 & barbara. patoleta @ uph. edu. pl; https: // orcid. org / 0000 - 0002 - 6931 - 7597 barbara.patoleta@uph.edu.pl text Zootaxa 2020 2020-12-30 4899 1 374 383 journal article 8725 10.11646/zootaxa.4899.1.19 f11cd46a-68f3-4e20-80c6-4a35877dbbf5 1175-5326 4400675 DBD84918-C1D8-4A87-A925-9B520F8A2B3D Langona pattayensis sp. nov. Figs 1–20 Etymology. The species is named after the type locality. Diagnosis. In the similar L . davidi ( Caleb, Mungkung & Mathai, 2015 ) , the anterior tegular outgrowth is oriented retrolaterally vs prolaterally in L. pattayensis sp. nov. The embolus ( Fig. 10 ) is much longer than in L . davidi (see Caleb 2020 : fig. 17I), coiling more than 360° vs 180º in L . davidi . The shape of the epigyne ( Fig. 18 ) is most similar to that of L. pallida Prószyński, 1993 , but the pockets are deeper, and the spermathecae ( Figs 19–20 ) have more distinctive accessory glands. Description. Male ( Holotype , UUME UPSZTY 155662, Figs 1–12 ). Carapace rather low and flat. Thoracic part almost twice as long as cephalic part, with 2 longitudinal stripes of white setae. Clypeus high, light brown, cheeks covered with white scales. Endites and labium light brown, with light tips. Sternum brown. Legs light brown, dorsally darker, legs I and IV with brown joint areas. Leg spination not distinctive. Dorsal opisthosoma with delicate scutum making up 57% of opisthosoma length, colouration light brown, centrally lighter with long protruding anterior white and brown setae. Spinnerets not distinctive, brown. Ventral opisthosoma light brown, with light setae. Palp as in Figs 7–12 . Ventral tibial apophysis in form of round outgrowth, retrolateral apophysis wide at base, distally pointed, ventrally bent and accompanied by long, thick, brown bristles. Tegulum elongate, with posterior pointed lobe and apical outgrowth. Embolus long, proximal part hidden by tegulum, coiling ca. 540º, visible distal part needle-like. Dimensions: CL 2.90, CW 2.08, CH 1.39, clypeus height 0.27, EFL 0.99, AEW 1.57, AME diameter 0.47, PEW 1.39, OL 2.75, OW 1.80, legs: I 4.81 (0.30, 1.45, 0.93, 0.89, 0.65, 0.59), II 4.47 (0.28, 1.36, 0.87, 0.81, 0.53, 0.62), III 6.40 (0.32, 2.03, 1.03, 1.06, 1.32, 0.64), IV 6.19 (0.32, 1.70, 1.02, 1.08, 1.37, 0.70). Female ( Paratype , UUME UPSZTY 155663, Figs 13–20 ). Carapace brown, with darker eye field, covered with brown setae and white scales, latter forming two thoracic stripes. Clypeus light brown, cheeks covered with white scales. Chelicerae light brown, palps light brown with white setae. Endites and labium light brown, with lighter tips, sternum elongate, yellowish. Legs light brown, with brown patches and annulations. Leg spination not distinctive. Opisthosoma poorly preserved, dorsally light brown, covered with brown setae. Ventral opisthosoma light grey. Spinnerets not distinctive, light brown. Epigyne as illustrated in Figs 18–20 : with 2 merging posterior pockets, copulatory openings crescent-shaped, oriented towards each other, copulatory ducts C-shaped, membranous, spermathecae thick-walled, strongly sclerotized, multi-chambered, with distinctive accessory glands. FIGURES 1–6. Male holotype of Langona pattayensis sp. nov. 1 Habitus, dorsal; 2 Carapace pattern; 3 Chelicerae, endites and labium, ventral; 4 Habitus, ventral; 5 Same, lateral; 6 Prosoma, frontal. Scales: 1, 4–6 = 1 mm. FIGURES 7–12. Male paratype palps of Langona pattayensis sp. nov. 7, 11 Ventral; 8 Retrolatero-ventral; 9 Retrolateral, expanded tegulum; 10 Same, apical; 12 Retrolateral. Abbreviations: ao—anterior tegular outgrowth; b—bristles; e—embolus; rta—retrolateral tibial apophysis; sd—sperm duct; t—tegulum; tl—tegular lobe; vta—ventral tibial apophysis. Scales: 7 = 1 mm, 11–12 as in fig. Dimensions: CL 3.06, CW 2.08, CH 1.52, clypeus height 0.10, EFL 1.05, AEW 1.60, AME diameter 0.31, PEW 1.47, OL 4.15, OW 2.92, legs: I 4.88 (0.38, 1.57, 0.97, 0.84, 0.61, 0.51), II 4.61 (0.38, 1.43, 0.94, 0.71, 0.57, 0.58), III 6.14 (0.44, 1.17, 1.09, 1.07, 1.21, 0.63), IV 6.09 (0.47, 1.68, 0.84, 1.09, 1.40, 0.61). FIGURES 13–20. Female paratype of Langona pattayensis sp. nov. 13–15 Habitus, dorsal, lateral and ventral; 16 Chelicerae, endites and labium, ventral; 17 Prosoma, frontal, 18 Epigyne; 19–20 Vulva. Abbreviations: ag—accessory gland; cd—copula-tory duct; co—copulatory opening; p—epigynal pocket; s—spermatheca. Scales 13, 14, 17 = 1 mm, 19 = 0.1 mm. Type material. Holotype ³: THAILAND : Chonburi Province : Pattaya, leg. Å. Holm , 2–15.XII.1979 (amongst grass near seashore) ( UUME UPSZTY 155662 ). Paratypes : Same data as holotype, 13³, 1♀ ( UUME UPSZTY 155663 ) . Distribution. Known only from the type locality ( Fig. 34 ). Remarks. The copulatory organs are very uniform within the genus. The new species is most similar to L . albolinea Caleb & Mathai, 2015 , L . alfensis Hęciak & Prószyński, 1983 , L . davidi , L . hongkong Song, Xie, Zhu & Wu, 1997 and L . simoni Hęciak & Prószyński, 1983 , but the true relationships may not reflect these similarities; all species listed are known from south and southeast Asia.