Panjange bukidnon Huber

Huber, Bernhard A. & Nuñeza, Olga M., 2015, Evolution of genital asymmetry, exaggerated eye stalks, and extreme palpal elongation in Panjange spiders (Araneae: Pholcidae), European Journal of Taxonomy 169, pp. 1-46 : 36-38

Panjange bukidnon Huber sp. nov.

urn:lsid:zoobank.org:act:1B7C5428-F2F6-49B6-BC90-79B2C761F2B7

Figs 90–92

Diagnosis

Easily distinguished from known congeners (and other similar relatives currently in Pholcus ) by modiFcations of male ocular area ( Fig. 90 ; short stalks and distinctive processes arising from near PME, with contiguous pointed tips), and by morphology of male palp ( Figs 91–92 ; highly distinctive procursus; shapes of bulbal processes). Female unknown.

Etymology

The species name is derived from the type locality; noun in apposition.

Type material

PHILIPPINES: holotype Ƌ, in ZFMK ( Ar 13023 ), Mindanao , Bukidnon Province, Santo Domingo (7.782°N, 125.397°E), 560 m a.s.l., forest remnant along brook , on leaf , 8–9 Feb. 2014 (B.A. Huber, E. Mondejar) .

Other material examined

None.

Description

Male (holotype)

MEASUREMENTS. Total body length 5.0, carapace width 0.9. Leg 1: 9.8 + 0.4 + 9.8, metatarsi broken in both legs, tibia 2: 6.4, tibia 3: 3.7, tibia 4: 5.4; tibia 1 L/d: 110. Distance PME–PME 250 µm, diameter PME 100 µm, distance PME–ALE ~30 µm; AME absent.

COLOR. Entire spider mostly pale ochre-gray to whitish, except large dark brown mark in ocular area including clypeus, pair of indistinct dark marks posteriorly on carapace, few small dark spots on abdomen dorsally, and brown patellae and tibia-metatarsus joints.

BODY. Habitus similar to Pa. malagos Huber sp. nov. (cf. Fig. 5 ); ocular area raised, each triad on short stalk, with distinctive processes arising from near PME with contiguous tips ( Fig. 90 ); carapace without median furrow; clypeus unmodiFed; sternum wider than long (0.65/0.55), unmodiFed.

CHELICERAE. As in Fig. 90 , with pair of simple, weakly sclerotized proximal processes in rather frontal position; each lamina with additional small tooth; without modiFed hairs; without stridulatory ridges.

PALPS. As in Figs 91–92 ; symmetric; coxa with distinct ventral apophysis; trochanter with short retrolateral apophysis; femur small, barely modiFed; tibia very large and wide (width ~65% of length); tarsus without elongation; procursus proximal part very short, without ventral process, distal part hinged, very large, without (or with very indistinct) parallel ridges; bulb with strong proximal sclerite, with very short processes (embolus and appendix) extending in opposite directions, without retrolateral process arising from proximal bulbal process, with small round sclerite between appendix and bulb.

LEGS. Without spines and curved hairs; few vertical hairs; retrolateral trichobothrium on tibia 1 at 4%; prolateral trichobothrium absent on tibia 1, present on other tibiae.

Female

Unknown.

Distribution

Known from type locality on Mindanao Island only ( Fig. 16 ).

Figures

Fig. 16. Known distribution of the Panjange lanthana group.

Figs 90 – 92. Panjange bukidnon Huber sp. nov. (ZFMK, Ar 13023). 90. Male prosoma and chelicerae, frontal view. 91 – 92. Left male palp, prolateral and retrolateral views. Abbreviations: a = appendix; b = genital bulb; e = embolus; h = hinge; p = procursus. Scale bars = 0.5 mm.

Figs 2 – 15. Live specimens. 2 – 4. Pa. lanthana, Mt. Isarog, Ƌ, ♀ with eggsac, and penultimate Ƌ. 5. Pa. malagos Huber sp. nov., Ƌ. 6 – 7. Pa. casaroro Huber sp. nov., ƋƋ. 8 – 10. Pa. camiguin Huber sp. nov. 8. ♀ with parasitized eggsac, from Camiguin Island. 9. Ƌ from Bohol Island. 10. Ƌ from Camiguin Island. 11 – 13. Pa. dinagat Huber sp. nov., Ƌ, ♀ with eggsac, and penultimate Ƌ. 14 – 15. Pa. marilog Huber sp. nov., ƋƋ showing color variation.