Metabus, AND

Álvarez-Padilla, Fernando, 2007, Systematics of the spider genus Metabus O. P. - Cambridge, 1899 (Araneoidea: Tetragnathidae) with additions to the tetragnathid fauna of Chile and comments on the phylogeny of Tetragnathidae, Zoological Journal of the Linnean Society 151 (2), pp. 285-335 : 325

SYSTEMATICS OF METABUS AND TETRAGNATHID SPIDERS 325

( Fig. 22A ); the epigynum shape, and the posterior origin of the fertilization ducts ( Fig. 22B–E ).

Description: Female from Anticura, Puyehue National Park, Chile (FAP0354). Habitus as in Figure 22A . Total length 4.1. Cephalothorax 1.7 long, 1.3 wide, 0.7 high. Sternum 0.8 long and wide. Chelicerae same colour as cephalothorax. Abdomen oval with two dorsal tubercles 2.82 long, 2.97 wide, 1.88 high, venter with two parallel lines of guanine silver patches. AME diameter 0.11. ALE 0.11. PME 0.13. PLE 0.11. Clypeus height 0.7 × AME diameter. AME separation 1.0 × AME diameter. AME–ALE separation 1.3 × AME diameter. PME separation 1.0 × PME diameter. PME–PLE separation 1.2 × PME diameter. Leg I length 6.7, leg II 5.0, leg III 2.9, leg IV 4.2, pedipalp 1.6. Epigynum as in Figure 22B–E .

Variation: Female total length 3.3–4.1, cephalothorax length 1.6–1.7.

Distribution: Endemic of to Chile ( Fig. 11C ).

Material examined (N = 12): CHILE: Región X de los Lagos, Osorno, 4.1 Km E of Anticura, trap site 662, 19–26.xii.1982. A. Newton & M. Thayer leg. 1 female ( AMNH) FAP0357 ; Aguas Calientes, P. N. Puyehue, 500 m, 2–5.i.1982, L. E. Peña leg. 1 female and 5 immatures ( AMNH) FAP0354 largest female measured; 450 m, 27.i.1986, N. I. Platnick, & R. T. Schuh leg. 1 female ( AMNH) FAP0356 ; Anticura , E. of Puyehue , 26-31.viii. 1–5.xi.1983, L. E. Peña leg. 1 female ( AMNH) FAP0355 ; Antillanca rd. , 470–720 m, 18–24.xii.1982, A. Newton & M. Thayer leg. 1 female ( AMNH) FAP0358 ; P. N. Puyehue, Anticura , 40°40′0″S, 72°10′30″W, 350 m, 13.xii.2000 − 2.i.2001, J. Miller, F. Álvarez, J. A. Coddington & G. Hormiga leg. 1 female ( USNM) FAP0352 smallest female measured; G. Hormiga leg. 1 female ( USNM) FAP0353 .

Figures

Figure 11. Distribution maps: A, Metabus species, Central and northern South America. B, Allende species, Chile. C, Chrysometa species, Chile. D, Mollemeta edwardsi, Chile.

Figure 22. A–E, Chrysometa maitae. A, female habitus. B, epigynum ventral view cleared. C, dorsal view cleared. D, central view. E, caudal view. F–I, Chrysometa levii. F, male habitus. G, male pedipalp ectal view. H, dorsal view. I, mesal view. Scale bars 0.2 mm; except A 1 mm.