Mitrager lopchu Lin & Lopardo & Uhl, 2022

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 : 507

MITRAGER LOPCHU ( TANASEVITCH, 2015) COMB. NOV.

( FIGS 38W , 40X , 54 ; SUPPORTING INFORMATION, FIG. S3J )

Oedothorax lopchu Tanasevitch, 2015: 388 , figs 51–60 (Dm).

Type material: Holotype: India: Himalayas, West Bengal, Darjeeling District, between Ghoom and Lopchu, 13 km from Ghoom , northern slope, 2000 m, sifting in forest; ♂ 14.x.1978, leg. C. Besuchet & I. Löbl ( MHNG, examined) . Paratypes: collected together with the holotype; same locality, 1♂ 12.x.1978, leg. C. Besuchet & I. Löbl ( MHNG, examined) .

Diagnosis:

Males: This species can be recognized by its slightly elevated PME-bearing region (less elevated then species like M. falciferoides and M. modesta ), the median-long stout setae at the ocular region, and the broad-based, conical palpal tibial prolateral apophysis, which is round at tip and has no enlarged setal base.

Description:

Male (paratype): Total length: 1.95. Prosoma: 0.93 long, 0.75 wide, PME-bearing region slightly elevated, with median-long stout setae at ocular region ( Fig. 38W ). Eyes: AME-AME: 0.02, AME width: 0.03, AME- ALE: 0.04, ALE width: 0.08, ALE-PLE: 0.01, PLE width: 0.08, PLE-PME: 0.05, PME width: 0.07, PME- PME: 0.06. Clypeus: not hirsute. Sternum 0.50 long, 0.54 wide. Chelicerae: stridulatory striae rows widely and evenly spaced. Legs: Tm I: 0.51. Pedipalp: patella prolateral proximal vertical macrosetae absent; tibia with one prolateral, two retrolateral trichobothria; TPS scaly, retrolaterally pointed; TPA moderately elevated, without enlarged setal base; TRA bent retrolaterally ( Fig. 54C ); PC median-sized, base not visible from dorsal view, distal setae close to distal clasp, distal clasp without striae, clasp directed retrolaterally ( Fig. 54A ); T without papillae; PT short, without papillae; TS short, wide at base, without papillae; MSA absent; DSA tip pointed, retrolaterally curved; EM flat, without papillae, exceeds ARP ( Fig. 54D ); ARP pointed, angled on dorsal side, with striae on dorsal side behind the angle; LER without striae, extended dorsal to E; radix with bulging membranous part below the junction with E; VRP absent; TP round and thick at tip, with thicker part mesal to the tip, fitted to depression on T; E retrolaterally spiral, anterior margin at base slightly wavy ( Fig. 54B ). Opisthosoma: dorsal pattern see Fig. 40X ; PMS with mAP, without AC; PLS with triad, one AC ( Fig. 54E ).

Figures

Figure 3. Continuation of Figure 2, showing Clade 36.

Figure 38. Male prosomal morphology of Clade 55 in Figure 3, lateral.A, Mitrager hirsuta (Wunderlich, 1974) (Wunderlich, 1974, fig. 8). B, M. clypeellum (Tanasevitch, 1998) (traced from photograph). C, M. elongata (Wunderlich, 1974) (Wunderlich, 1974, fig. 13). D, M. cornuta (Tanasevitch, 2015) (Tanasevitch, 2015, fig. 16). E, M. villosa (Tanasevitch, 2015) (Tanasevitch, 2015, fig. 89). F, M. angela (Tanasevitch, 1998) (Tanasevitch, 1998a, fig. 14). G, M. coronata (Tanasevitch, 1998) (Tanasevitch, 1998a, fig. 6). H, M. sexoculorum (Tanasevitch, 1998) (Tanasevitch, 1998a, fig. 19). I, M. globiceps (Thaler, 1987) (traced from photograph). J, M.lineata (Wunderlich, 1974) (traced from photograph).K, M. dismodicoides (Wunderlich, 1974) (traced from photograph). L, M. tholusa (Tanasevitch, 1998) (Tanasevitch, 1998a, fig. 24). M, M. lucida (Wunderlich, 1974) (Wunderlich, 1974, fig. 30). N, M. sexoculata (Wunderlich, 1974) (traced from photograph). O. M. noordami van Helsdingen, 1985 (van Helsdingen, 1985, fig. 1). P, M. unicolor (Wunderlich, 1974) (traced from photograph). Q, M. rustica (Tanasevitch, 2015) (Tanasevitch, 2015, fig. 75). R, M. assueta (Tanasevitch, 1998) (Tanasevitch, 1998a, fig. 1). S, M. malearmata (Tanasevitch, 1998) (Tanasevitch, 1998a, fig. 50). T, M. savigniformis (Tanasevitch, 1998) (Tanasevitch, 1998a, fig. 40). U, M. falcifer (Tanasevitch, 1998) (Tanasevitch, 1998a, fig. 46). V, M. modesta (Tanasevitch, 1998) (Tanasevitch, 1998a, fig. 36). W, M. lopchu (Tanasevitch, 2015) (traced from photograph). X, M. falciferoides (Tanasevitch, 2015) (Tanasevitch, 2015, fig. 35).

Figure 40. Opisthosoma, dorsal view. A–L, N–Y, male; D, female. A, Mitrager hirsuta (Wunderlich, 1974). B, M. clypeellum (Tanasevitch, 1998). C, M. elongata (Wunderlich, 1974). D, M. cornuta (Tanasevitch, 2015). E, M. villosa (Tanasevitch, 2015). F,M. angela (Tanasevitch, 1998). G, M. coronata (Tanasevitch, 1998). H, M. sexoculorum (Tanasevitch, 1998). I, M. globiceps (Thaler, 1987). J, M. lineata (Wunderlich, 1974). K, M. dismodicoides (Wunderlich, 1974). L, M. tholusa (Tanasevitch, 1998), holotype. M, ‘M. tholusa’, paratype (not conspecific with holotype). N, M. lucida (Wunderlich, 1974). O, M. sexoculata (Wunderlich, 1974). P,. M. noordami van Helsdingen, 1985. Q, M. unicolor (Wunderlich, 1974). R, M. rustica (Tanasevitch, 2015). S, M. assueta (Tanasevitch, 1998). T, M. savigniformis (Tanasevitch, 1998), paratype. U, M. savigniformis, holotype. V, M. falcifer (Tanasevitch, 1998). W, M. modesta (Tanasevitch, 1998). X, M. lopchu (Tanasevitch, 2015). Y, M. falciferoides (Tanasevitch, 2015). Scale bars 0.1 mm.

Figure 54. Mitrager lopchu (Tanasevitch, 2015). A–D, male left palp. A, retrolateral view. B, prolateral view. C, dorsal view. D, ventral view. E, male spinnerets. Scale bars 0.1 mm.