Toccolus globitarsis Suzuki, 1969

Zhang, Chao & Martens, Jochen, 2020, A taxonomic study on Epedanidae from Thailand including functional aspects of male genital morphology (Opiliones, Laniatores), ZooKeys 915, pp. 25-58 : 25

Toccolus globitarsis Suzuki, 1969 Figures 68-72 , 73-86 , 87-95 , 96-101

Toccolus globitarsis Suzuki 1969b: 91-96, fig. 9-11, pls 5-6.

Type specimens

(not examined). Holotype, male: THAILAND: Paktong Cha, Nakhon Ratchasima Province: 24 November - 10 December 1963. Paratypes: three females, same collection data as the holotype. All specimens were collected by H. Watanabe.

The type-specimens are all deposited in the Zoological Laboratory, Faculty of Science, Hiroshima University.

Additional material examined.

One male, one female and one juvenile (SMF-CJM7053), THAILAND: Chaiyaphum Province: Phakdi Chumphon Distr., near cave Wat Tham Kaeo (No. 15), 15°58.50'N 101°24.66'E, 350 m alt. 1 November 2010, S. Dashdamirov leg.

Redescription.

Male habitus as in Figs 68 , 73 , 96 , 97 . Coloration (Figs 96 , 97 ): body light yellow with brown patches; median area of prosoma with brown reticulations; both lateral ridges of scutum with brown stripes; opisthosomal areae I-III each with a transverse band of brown markings; area IV and all free tergites with a cross series of three brown flecks; all coxae yellow with brown reticulations distally; free sternites each with brown bands, bands somewhat paler on the central portion; chelicerae and pedipalps with reticulated irregular markings; trochanters pale yellow, femur, patella, tibia, and metatarsus with black reticulations, tarsus lighter.

Dorsum (Figs 73 , 96 ). Scutum nearly parallel-sided, slightly trapezoid, the widest portion at scutal area IV, and abdomen bluntly pointed posteriorly. Prosoma with a row of nine sharp pointed tubercles along anterior margin (Fig. 73 ); otherwise whole dorsum smooth. Ocularium oval, removed from anterior border of scutum by 0.33 mm, armed with a conspicuously shorter median spine than the height of ocularium (lateral view), and two small tubercles above the eyes. The posterior area of ocularium on prosoma raised and broadly rounded. The anterior margin of opisthosomal area I bowed and the borders of other areae slightly bowed. Opisthosomal areae I-IV with a row of seta-tipped tubercles and a longitudinal row of similar tubercles on the lateral margins. Free tergites with a transverse row of seta-tipped tubercles each, anal operculum with scattered granules.

Venter (Fig. 98 ). Coxae with tubercular surface, coxa I with enlarged seta-tipped tubercles. Coxae II-IV with minute tubercles. Genital operculum and free sternites with seta-tipped granules. Spiracles clearly visible.

Chelicerae (Figs 69-70 , 74-77 ). Basichelicerite elongate and armed with three long, curved spines dorsally (Figs 69 , 70 ); one similar spine distally on the ectal side (Figs 70 , 74 ); six seta-tipped tubercles scattered over the ventral side (Fig. 69 ); medial side with a basal protuberance (Fig. 69 ). Tubercle on left basichelicerite more medially than on right one (arrowed in Fig. 75 ). Cheliceral hand considerably widened, pro-dorsally with some seta-tipped tubercles, the inner ones much larger than the outer ones (Fig. 76 ); ectally with two seta-tipped tubercles at the subdistal portion (Figs 70 , 76 ); one enlarged seta-tipped tubercle and a smaller one on the ventral side (Fig. 70 ). Fingers strong, inner edges toothed (Fig. 77 ): moveable finger with five teeth, the proximal one square, the other four pointed; fixed finger with six crested teeth.

Pedipalps (Figs 71 , 72 ). Coxa dorsally with three seta-tipped tubercles, one strong distal, one subdistal more exteriorly placed, one blunt proximal; ventrally with two seta-tipped tubercles. Trochanter ventrally with two setiferous tubercles, dorsally with an enlarged one and a small one. Femur ventrally with a row of five setiferous tubercles of which the longest one close to the base; dorsally with a row of ten setiferous tubercles of which the distal two inconspicuous; distally on medial side with two setiferous tubercles. Patella ventro-mesally with two setiferous and ventro-ectally with one setiferous tubercles. Tibia ventro-mesally with three and ventro-ectally with four setiferous tubercles. Tarsus on ventral side para-median with three setiferous tubercles each. Tarsal claw curved, longer than tarsus.

Legs. All segments unarmed, nearly smooth. Legs I-II slender, legs III-IV much stronger. Femora I-III not curved, almost straight, femur IV slightly curved. Distitarsi I and II with two tarsomeres. Distitarsi III and IV without scopula, only two bare claws present. Tarsal formula (I-IV): 7(2)/16(2)/6/7.

Penis (Figs 87-95 ). Shaft slender, nearly parallel-sided and only slightly distended, then more pronounced towards apical portion (pars distalis). Ventral surface of pars distalis formed by ventral plate conspicuously widened distally, and at its distal end with a deep and rounded incision (Fig. 88 ). Glans partially sunken into dorsally depressed portion of pars distalis and extending the distal margin of the ventral plate (Figs 88-90 ). Capsula externa cylindrical. Capsula interna inside with a dense coat of fur-like microtrichia, including ventral lobe and dorsal lobe; everted ventral lobe ventrally extended beyond the ventral plate, and folded on both sides; everted dorsal lobe embracing the capsula externa, and with two small triangular projections on the sides of the distal margin of pars distalis. Stylus curled by the membrane forming irregular shape. Spination symmetrical. One pair of setae A, B, and F. Two pairs of setae C1-2, D1-2, and E1-2 (Figs 88-92 ).

Female

(Figs 78-86 , 99-101 ). Generally similar to male except abdomen slightly wider than in male (Figs 78 , 99 ). The median spine on ocularium greatly enlarged and ocularium with two reduced tubercles above each eye. Chelicerae not enlarged but of normal shape, with a slight difference in inner edges of cheliceral finger (Fig. 82 ). Femora of pedipalpi dorsally with a row of five setiferous tubercles, distally on medial side with three setiferous tubercles. Tarsal formula (I-IV): 6(2)/15(2)/6/7.

Ovipositor (Figs 85 , 86 ). Ventral surface with four setae and dorsal surface with six setae.

Measurements.

Male (female): body 2.89 (2.41) long, 2.35 (2.10) wide at widest portion, scutum 2.27 (1.80) long. Ocularium 0.45 (0.32) long, 0.77 (0.62) wide. Proximal chelicerae 1.60 (1.01) long, 0.50 (0.36) wide; second 2.56 (1.52) long, 0.92 (0.51) wide; distal 1.15 (0.74) long, 0.25 (0.14) wide. Pedipalpal claw 0.95 (0.87) long. Penis 1.15 long. Measurements of pedipalp and legs as in Tables 5 and 6 .

Habitat.

The specimens were collected in litter and under stones.

Distribution.

Thailand (Nakhon Ratchasima Province, Chieng Mai Province, Chaiyaphum Province).

Figures

Figures 68 - 72. Toccolus globitarsis Suzuki, 1969. Male 68 body, lateral view 69 left chelicera, medial view 70 same, lateral view 71 left pedipalp, medial view 72 same, lateral view. Scale bars: 1 mm.

Figures 73 - 86. Toccolus globitarsis Suzuki, 1969, male (Figs 73 - 77) and female (Figs 78 - 86) 73, 78 body, dorsal view 74, 75 basichelicerite, dorsal view 74 left 75 right 76 left cheliceral hand, frontal view 77 left cheliceral fingers, frontal view 79 left chelicera, medial view 80 same, lateral view 81 left basichelicerite, dorsal view 82 left cheliceral hand, frontal view 83 left pedipalp, medial view 84 same, lateral view 85 ovipositor, ventral view 86 same, dorsal view. Scale bars: 1 mm (73 - 78, 83 - 84), 0.5 mm (79 - 82), 0.25 mm (85 - 86).

Figures 87 - 95. Toccolus globitarsis Suzuki, 1969, genitalia of male 87 penis, dorsal view 88 pars distalis of penis, ventral view 89, 90 same, lateral view 91 same, dorsal view 92 pars distalis of penis (everted), ventral view 93, 94 same, lateral view 95 same, dorsal view. Abbreviations: CE capsula externa CI capsula interna DL dorsal lobe G glans Pb pars basalis Pd pars distalis S stylus VP ventral plate VL ventral lobe. Scale bars: 0.25 mm.

Figures 96 - 101. Photographs of male (Figs 96 - 98) and female (Figs 99 - 101) of Toccolus globitarsis Suzuki, 1969. 96, 99 body and parts of appendages, dorsal view 97, 100 body and parts of appendages, lateral view 98, 101 body and parts of appendages, ventral view. Scale bars: 1 mm.