Taxonomic notes on the armored spiders of the families Pacullidae and Tetrablemmidae (Arachnida, Araneae) from Singapore Author Lin, Yucheng Author Koh, Joseph K. H. Author Koponen, Seppo Author Li, Shuqiang text ZooKeys 2017 661 15 60 http://dx.doi.org/10.3897/zookeys.661.10677 journal article http://dx.doi.org/10.3897/zookeys.661.10677 1313-2970-661-15 7ADEBBF244A04276AB7D1EB2BBFD8953 7ADEBBF244A04276AB7D1EB2BBFD8953 Paculla globosa Lin & Li sp. n. Figs 4, 5, 6 Type material. Holotype ♂ (LKCNHM), SINGAPORE: Bukit Timah Nature Reserve, Jungle Fall Stream, altitude 118 m, 1°21'25.4"N , 103°46'25.3"E , 21 August 2015, S. Li and Y. Tong leg. Paratype 1♀ (LKCNHM), SINGAPORE: Bukit Timah Nature Reserve, Bukit Timah Summit, altitude 163 m, 1°21'16.7"N , 103°46'35.0"E , 19 August 2015, S. Li and Y. Tong leg. Etymology. The specific epithet derives from the Latin word "globosus" = globular, drawing attention to the shape of palpal bulb; adjective. Diagnosis. This new species can be distinguished from all congeners with the exception of Paculla sulaimani Lehtinen, 1981 by the globular bulb (Fig. 5 C-D ), the long, finger-like embolus (Fig. 5 A-D ) and the presence of three bridge fragments of MV (Fig. 6B). Its male differs from Paculla sulaimani (see Lehtinen, 1981: 18, fig. 13) by the narrower embolus with weakly lobed end (Fig. 5A, C-D ). The female differs from Paculla bukittimahensis sp. n. (Fig. 3B) by the anterior median part of the atrium protruding broadly and the larger, bridge fragments of MV almost touching each other (Fig. 6B). Figure 4. Paculla globosa sp. n., male holotype ( A-B , E) and female paratype ( C-D , F-G ). A-F habitus G genital area (untreated). A, C dorsal B, D, G ventral E-F lateral. Abbreviations: A = anal plate; AV = anterior ventrolateral plate; L = lateral plate; MV = median ventrolateral plate; P = pulmonary plate; PA = preanal plate; PG = postgenital plate. Scale bars: 0.50 mm. Description. Male (holotype). Coloration: body dark reddish brown; legs reddish-brown. Measurements: total length 4.40; carapace 1.95 long, 1.40 wide, 1.20 high; abdomen 2.50 long, 1.90 wide, 2.30 high; clypeus 0.49 high; sternum 1.30 long, 1.00 wide. Length of legs: I 8.28 (2.53, 0.65, 2.35, 1.75, 1.00); II 6.95 (2.10, 0.60, 1.85, 1.50, 0.90); III 5.75 (1.70, 0.54, 1.41, 1.30, 0.80); IV 8.16 (2.50, 0.62, 2.30, 1.91, 0.83). Prosoma (Fig. 4 A-B , E): carapace low, sparsely granulated over whole surface, but surface between the granules smooth; eyes white, ALE=AME=PLE; cephalic part moderately raised; cervical groove distinct; thoracic fovea shallow; clypeus vertical an teriorly ; labium triangular, distally obtuse; sternum rough, covered with thin setae, posterior corner protruded. Legs: cuticle striated, weakly granular. Opisthosoma (Fig. 4 A-B , E): dorsal scutum long, oval, covered with thin setae, margin rugose, center modified by sparse pits; rows of small sclerites between lateral scuta, lateral scutum I short; ventral scutum smooth, margin rugose; perigenital scutum broad, triangular. Palp (Fig. 5 A-D ): femoral cuticle smooth, approximately two times as long as patella; patella proximally narrow, distally wide; tibia broad, swollen, 1.3 times as wide as femur; cymbium compressed, slightly shorter than tibia, distally obtuse bifurcate; bulb globular, surface smooth (Fig. 5 C-D ); embolus long, clavate, starting from subdistal-ventral 1/3 position of bulbous surface (Fig. 5B), proximally sclerotized and bent, distally shallow furcated; embolic tip faint, with split ends (Fig. 5A). Figure 5. Paculla globosa sp. n., male holotype. A, C-D left palp B palpal bulb. A anterior B ventral C prolateral D retrolateral. Abbreviations: ep = embolic part of apes of palpal organ. Scale bars: 0.20 mm. Female (paratype). Coloration as in male. Measurements: total length 4.50; carapace 1.85 long, 1.45 wide, 1.20 high; abdomen 2.67 long, 1.80 wide, 2.21 high; clypeus 0.43 high; sternum 1.14 long, 0.97 wide. Length of legs: I 7.35 (2.25, 0.55, 2.10, 1.65, 0.80); II 6.23 (1.95, 0.53, 1.65, 1.35, 0.75); III 5.22 (1.55, 0.50, 1.30, 1.22, 0.65); IV 7.20 (2.15, 0.54, 2.00, 1.80, 0.71). Length of palp: 1.58 (0.45, 0.21, 0.34, 0.38). Carapace, abdomen, and legs as in male (Fig. 4 C-D , F); clypeus slightly lower than in male. Genitalia (Figs 4G; 6 A-B ): epigynal area strongly sclerotized (Fig. 4G); postgenital scutum rugose, wider than preanal scutum; median ventrolateral plate triangular; preanal scutum rugose, wider than long (Fig. 6A). Vulva with a large, nearly rectangular atrium, laterally rugose, and protruding anteromedially; three adjacent, equal sizes bridge fragments of MV below the atrium, and close to the dorso-posterior margin of postgenital scutum (Fig. 6B). Figure 6. Paculla globosa sp. n., female paratype. A genital area (lactic acid-treated), ventral Bditto, dorsal. Abbreviations: AT = atrium; AV = anterior ventrolateral plate; MV = median ventrolateral plate; MVB = bridge fragments of MV; P = pulmonary plate; PA = preanal plate; PG = postgenital plate; PV = posterior ventrolateral plate. Scale bars: 0.50 mm. Distribution. Singapore.