Atypena cirrifrons, (HEIMER, 1984)

Lin, Shou-Wang, Lopardo, Lara & Uhl, Gabriele, 2022, Evolution of nuptial-gift-related male prosomal structures: taxonomic revision and cladistic analysis of the genus Oedothorax (Araneae: Linyphiidae: Erigoninae), Zoological Journal of the Linnean Society 195, pp. 417-584 : 540-541

ATYPENA CIRRIFRONS ( HEIMER, 1984)

( FIGS 7G , 67H , 68H , 74 )

Paranasoona cirrifrons Heimer, 1984: 87 , figs 1–8 (Dmf).

Paranasoona cirrifrons Zhu & Sha, 1992: 42 , figs 1–8 (mf).

Paranasoona cirrifrons Song et al., 1999: 203 , fig. 114N–Q (mf).

Atypena cirrifrons Tanasevitch, 2014b: 72 (Tmf from Paranasoona = Atypena ).

Atypena cirrifrons Komisarenko et al., 2019: 27 , figs 1, 2 (m).

Examined material: Laos: Champasak, Muang Bachieng, Pak Song (15°10.6’ N, 106°14.253’ E), plateau, pine forest, 1280 m, at day, sweepnet, 1♂ 27.ix.2009, coll. P. Jäger, det. A. V. Tanasevitch, 2014 ( SMF 64983-124 ) .

Diagnosis:

Males: According to available illustrations of Atypena species, they are all similar in regard to their prosomal and palpal morphology. According to our observation, this species can be distinguished from A. formosana by the proportionally longer distal suprategular apophysis and ventral radical process.

Females: No study of Atypena comparative female morphology exists to date; such diagnosis is, therefore, beyond the scope of the current study.

Description:

Male ( SMF): Total length: 1.60. Prosoma: 0.73 long, 0.59 wide, PME region largely elevated, interocular region with translucent setae laterally curved ( Fig. 7G ). Eyes: AME-AME: 0.03, AME width: 0.06, AME- ALE: 0.03, ALE width: 0.07, ALE-PLE: 0.01, PLE width: 0.08, PLE-PME: 0.14, PME width: 0.07, PME- PME: 0.14. Clypeus: upper-half hirsute, one sub- AME seta. Sternum: 0.42 long, 0.43 wide. Chelicerae: mastidia absent; stridulatory striae imbricated, rows compressed proximally ( Fig. 67H ). Legs: tibia chaetotaxy 2-2-1-1, dorsal proximal macroseta on tibia I, II, III and IV 0.46, 0.64, 0.83 and 1.81 times diameter of tibia, respectively; Tm I: 0.79. All metatarsi with trichobothrium. Pedipalp: patella prolateral proximal vertical macrosetae absent; tibia with one prolateral, two retrolateral trichobothria; TPA short, pointed and sclerotized at tip; PC base not visible from dorsal view, distal setae close to distal clasp, terminal part slightly enlarged, distal clasp without striae, clasp extended apically ( Fig. 74A ); T without papillae; PT small, without papillae; TS long and slender, without papillae ( Fig. 74A, C ); MSA absent; DSA wide, truncated at tip, ventral corner more extended than dorsal corner ( Fig. 74A ); EM broad and flat, without papillae, exceeding ARP; ARP flat, unsclerotized; LER retrolateral to E; VRP long, slender; R without papillae; TP long, slender; E short and stout, slightly retrolaterally curved ( Fig. 74B ). Opisthosoma: dorsal pattern see Fig. 68H ; PMS with mAP, three AC; PLS with triad, 3+ AC ( Fig. 74F ).

Distribution: India, China, Laos, Thailand, Vietnam.

Figures

Figure 7. Male prosomal morphology, lateral.A, Emertongone montifera (Emerton, 1882) (Paquin & Dupérré, 2003, fig. 1187). B, Shaanxinus mingchihensis Lin, 2019 (traced from photograph). C, ‘Oedothorax’ paracymbialis Tanasevitch, 2015 (traced from photograph). D, ‘Oe.’ kodaikanal Tanasevitch, 2015 (traced from photograph). E, ‘Oe.’ cunur Tanasevitch, 2015 (traced from photograph). F, ‘Oe.’ stylus Tanasevitch, 2015 (traced from photograph). G, Atypena cirrifrons (Heimer, 1984) (traced from photograph). H, A. formosana (Oi, 1977) (Oi, 1977, fig. 2). I, ‘Oe.’ nazareti Scharff, 1989 (Scharff, 1989: fig. 7). J, Gongylidium rufipes (Linnaeus, 1758) (traced from photograph). K, Ummeliata insecticeps (Bösenberg & Strand, 1906) (Tu & Li 2004: fig. 8A). L, U. esyunini (Zhang, Zhang & Yu, 2003) (Zhang et al., 2003, fig. 2A). M, Hylyphantes graminicola (Sundevall, 1830) (traced from photograph). N, Tmeticus tolli Kulczyński, 1908 (traced from photograph). O, Oedothorax gibbosus (Blackwall, 1841) [Roberts, 1987: fig. 21 (e)]. P, Oe. trilobatus (Banks, 1896) (Bishop & Crosby, 1935: fig. 79). Q, Oe. gibbifer (Kulczyński, 1882) (Heimer & Nentwig, 1991: fig.604.5).R, Oe.apicatus (Blackwall, 1850) [Roberts, 1987: fig.23 (d)].S, Oe. retusus (Westring, 1851) [Roberts, 1987: fig. 23 (c)]. T, Oe. paludigena Simon, 1926 [Millidge, 1975: fig. (5)]. U, Oe. meridionalis Tanasevitch, 1987 (Tanasevitch, 1987: fig. 107).V, Oe. agrestis (Blackwall, 1853) (Roberts, 1987: fig. 23B).W, Oe. fuscus (Blackwall, 1834) (Roberts, 1987: fig. 23A). X, Oe. tingitanus (Simon, 1884) (Denis, 1968: fig. 11).

Figure 67. Male chelicerae, stridulatory striae on lateral side. A, Jilinus hulongensis (Zhu & Wen, 1980). B, Cornitibia simplicithorax (Tanasevitch, 1998). C, Emertongone montifera (Emerton, 1882). D, ‘Oedothorax’ paracymbialis Tanasevitch, 2015. E, ‘Oe.’ kodaikanal Tanasevitch, 2015. F, ‘Oe.’ cunur Tanasevitch, 2015. G, ‘Oe.’ stylus Tanasevitch, 2015. H, Atypena cirrifrons (Heimer, 1984). I, A. formosana (Oi, 1977). J, ‘Oe.’ nazareti Scharff, 1989. K, Gongylidium rufipes (Linnaeus, 1758). L, Ummeliata insecticeps (Bösenberg & Strand, 1906). M, U. esyunini (Zhang, Zhang & Yu, 2003). N, Hylyphantes graminicola (Sundevall, 1830). O, Tmeticus tolli Kulczyński, 1908. Scale bars 0.05 mm.

Figure 68. Male opisthosoma, dorsal view. A, Jilinus hulongensis (Zhu & Wen, 1980). B, Cornitibia simplicithorax (Tanasevitch, 1998). C, Emertongone montifera (Emerton, 1882). D, ‘Oedothorax’ paracymbialis Tanasevitch, 2015. E, ‘Oe.’ kodaikanal Tanasevitch, 2015. F, ‘Oe.’ cunur Tanasevitch, 2015. G, ‘Oe.’ stylus Tanasevitch, 2015. H, Atypena cirrifrons (Heimer, 1984). I, A. formosana (Oi, 1977). J, ‘Oe.’ nazareti Scharff, 1989. K, Gongylidium rufipes (Linnaeus, 1758). L, Ummeliata insecticeps (Bösenberg & Strand, 1906). M, U. esyunini (Zhang, Zhang & Yu, 2003). N, Hylyphantes graminicola (Sundevall, 1830). O, Tmeticus tolli Kulczyński, 1908. Scale bars 0.1 mm.

Figure 74. Atypena cirrifrons (Heimer, 1984). A–E, male right palp, images flipped horizontally. A, retrolateral view. B, prolateral view. C, dorsal view. D, ventral view. E, apical view. F, male right posterior lateral spinneret and posterior median spinnerets. Scale bar 0.1 mm.