Nanophareus

Hara, Marcos Ryotaro, 2016, Cladistic analysis and description of three new species of the Chilean genus Nanophareus (Opiliones: Gonyleptidae: Pachylinae), Zootaxa 4105 (2), pp. 101-123 : 110-111

Key to males of Nanophareus

1. Ocularium low and widened (rendering the aspect of a divided ocularium) or low and narrowed (less than ⅓ carapace width; Fig. 2 A, C)........................................................................................... 2

- Ocularium domed and not widened (approximately ⅓ carapace width; Figs 4 A, 6A)............................... 5

2(1) Prolateral apical apophysis of coxa IV bifid from subbasal region, directed backwards, dorsal branch longer than ventral branch ( Figs 2 D, 3B).................................................................................. 3

- Prolateral apical apophysis of coxa IV single ( Figs 4 C, 5B) or apically bifid with two very short branches.............. 4

3(2) Ocularium low and narrowed ( Fig. 2 A, C), trochanter IV with two long apical apophyses ( Fig. 3 A)... N. bicornutus sp. nov.

- Ocularium low and widened, trochanter IV with one long apical apophysis.......................... N. bosqenublado

4(2) Scutal area IV undivided and prolateral apical apophysis of coxa IV apically bifid with two very short branches … N. palpalis

- Scutal area IV divided and prolateral apical apophysis of coxa IV single................................ N. bipartitus

5(1) Frontal hump on anterior margin of dorsal scutum unarmed, scutal area IV divided ( Fig. 6 A), a dorsobasal and a retrobasal apophyses on femur IV ( Fig. 7 A)...................................................... N. polyhastatus sp. nov.

- Frontal hump on anterior margin of dorsal scutum with enlarged, pointed median tubercles ( Fig. 4 A), scutal area IV undivided and dorsally unarmed femur IV ( Fig. 5 A).................................................................. 6

6(5) Scutal area IV with a pair of paramedian spines, prolateral apical apophysis of coxa IV apically bifid with two very short branches, femur IV with a retrolateral median spine................................................ N. araucanus

- Scutal area IV unarmed ( Fig. 4 A), prolateral apical apophysis of coxa IV single, femur IV retrolaterally unarmed................................................................................................. N. maipu sp. nov.

Figures

FIGURE 2. Nanophareus bicornutus sp. nov. Male (holotype): A, habitus, dorsal view; B, ditto, ventral view (schematic illustration, omitting tubercles of regular size); C, ocularium, anterior view; D, habitus, right lateral view; E, right tarsus IV, prolateral view; F, right pedipalp, prolateral view; G, ditto, retrolateral view. Abbreviations: A 1 – 4, scutal areas I – IV; Ca, carapace; Fh, frontal hump; Ft 1 – 3, free tergites I – III; Oc, ocularium; Op, opisthosoma; Pac, prolateral apical apophysis of coxa IV; Pm, posterior margin of dorsal scutum. A, D at same scale; F, G at same scale. Scale bars of A, B, D, F, G: 1 mm. Scale bars of C, E: 0.5 mm.

FIGURE 3. Nanophareus bicornutus sp. nov. Male (holotype) right trochanter-metatarsus IV: A, dorsal view; B, prolateral view; C, ventral view; D, retrolateral view. Abbreviations: Pro, prolateral; Ret, retrolateral. A – D at same scale. Scale bars: 1 mm.

FIGURE 4. Nanophareus maipu sp. nov. Male (holotype): A, habitus, dorsal view; B, ditto, ventral view (schematic illustration, omitting tubercles of regular size); C, ditto, right lateral view; D, right tarsus IV, prolateral view; E, right pedipalp, prolateral view; F, ditto, retrolateral view; G, left pedipalpal femur, prolateral view. Female (paratype; CASENT 9033796): H, right pedipalp, prolateral view. A, C at same scale; E – H at same scale. Scale bars of A – C, E – H: 1 mm. Scale bar of D: 0.5 mm.

FIGURE 5. Nanophareus maipu sp. nov. Male (holotype) right leg IV: A, dorsal view; B, prolateral view; C, ventral view; D, retrolateral view. A – D at same scale. Scale bar: 1 mm.

FIGURE 6. Nanophareus polyhastatus sp. nov. Male (holotype): A, habitus, dorsal view; B, ditto, ventral view (schematic illustration, omitting tubercles of regular size and the suture between the stigmatic area and coxae IV); C, ditto, right lateral view; D, right tarsus IV, retrolateral view; E, right pedipalp, prolateral view; F, ditto, retrolateral view. A, C at same scale; E, F, at same scale. Scale bars of A – C, E – F: 1 mm. Scale bar of D: 0.5 mm.

FIGURE 7. Nanophareus polyhastatus sp. nov. Male (holotype) right leg IV: A, dorsal view; B, prolateral view; C, ventral view; D, retrolateral view. Pat, prolateral apical apophysis of trochanter IV; Rat, ditto, retrolateral apical; Smpat, ditto, submedian prolateral. A – D at same scale. Scale bar: 1 mm.