Jarmilana, Cruz-Lopez & Proud & Perez-Gonzalez, 2016

Cruz-Lopez, Jesus A., Proud, Daniel N. & Perez-Gonzalez, Abel, 2016, When troglomorphism dupes taxonomists: morphology and molecules reveal the first pyramidopid harvestman (Arachnida, Opiliones, Pyramidopidae) from the New World, Zoological Journal of the Linnean Society 177 (3), pp. 602-620 : 611

JARMILANA GEN. NOV.

Stygnomma (partim):. Goodnight & Goodnight, 1977: 148; Reddell, 1981: 166; Rambla & Juberthie, 1994: 219; Kury, 2003: 235.

Type species:. Stygnomma pecki Goodnight & Goodnight, 1977 .

Etymology:. The genus name is a tribute to Dr Jarmila Kukalova-Peck, recognized paleontologist and collector of the type series, who, in company with her husband, Dr Steward Peck, made important collections of cave dwelling animals across the Central American and Caribbean countries. Gender feminine.

Diagnosis:. Eyeless harvestman ( Fig. 2 ). Carapace highly elevated with a large anterior hump and smaller posterior hump ( Fig. 3B ). Male pedipalps very strong with palpal femur laterally compressed and high ( Figs. 7A, C , 8 ). Male basichelicerite armed with two dorsal apophyses, cheliceral hand with one dorsal apophysis ( Fig. 6A, B ). Trochanter IV without sexually dimorphic spurs. Pars distalis of male genitalia slightly swollen and bulbous, without a marked ventral plate as in Gonyleptoidea, apical margin terminating in a small lip, curled ventrally. Pars distalis armed with six pairs of macrosetae, with one lateral pair in close proximity to the follis. Stylus subapical, long and curved, arising from the mid-follis, concealed below two huge dorsoapical lobes of the follis ( Figs 10, 11 ). Several morphological features clearly separate this genus from other Pyramidopidae genera, such as the cheliceral and pedipalpal armature and the absence of an inflated dorsodistal bulla in the basiquelicerite. The male genitalic morphology is also distinctive of this genus. The combination of a pars distalis swollen with one small and rounded lamina apicalis and a follis with dorsoapical portion modified into two large lobes that conceal (when retracted) a stylus ending with a dorsal barb appears to be unique to Jarmilana and not presented in any other know genera of Pyramidopidae .

Figures

Figure 2. Jarmilana pecki, comb. nov. alpha male MACN_Ar 35555, habitus. A, dorsal view. B, dorsolateral view. Scale bars = 2 mm.

Figure 3. Jarmilana pecki, comb. nov. beta male MACN_Ar 35557, habitus. A, dorsal view. B, lateral view. Boxes indicate areas shown in detail in Fig. 4. Scale bars = 1 mm.

Figure 6. Jarmilana pecki, comb. nov. beta male MACN_Ar 35557, left chelicera. A, mesal view. B, ectal view. C, frontal view. Scale bars: (A, B) 500 µm; (C) 250 µm.

Figure 7. Jarmilana pecki, comb. nov. beta male MACN_Ar 35557, pedipalp. A, left pedipal, ectal view. B, enlargement of box in (A), smooth base of plumose seta inserted on major setiferous tubercle. C, left pedipalp, mesal view. D, right pedipalpal tarsus, mesal view. E, enlargement of box 1 in (D), small pores at base of plumose seta inserting on major setiferous tubercle. F, enlargement of box 2 in (D), microtrichia on the distal part of a plumose seta associated with major setiferous tubercle. Scale bars: (A, C) 1 mm; (D) 500 µm; (B) 50 µm; (E, F) 20 µm.

Figure 8. Jarmilana pecki, comb. nov. comparison of left pedipalps. A, entire palp, alpha male MACN_Ar 35555, mesal view. B, palpal femur of beta male MACN_Ar 35557, mesal view. C, entire palp, female MACN_Ar 35556, mesal view. All drawings are to same scale. Arrow indicates the mesal subdistal major setiferous tubercle.

Figure 11. Jarmilana pecki, comb. nov. genitalia of alpha male MACN_Ar 35555, expanded. A, lateral view. B, dorsolateral view. D1, macrosetae D1; Fo, follis; Lb, lobe of follis; St, stylus.