Himalayana siliwalae Grismado, 2014

Grismado, Cristian J., Deeleman, Christa, Piacentini, Luis N., Izquierdo, Matías A. & Ramírez, Martín J., 2014, Taxonomic Review Of The Goblin Spiders Of The Genus Dysderoides Fage And Their Himalayan Relatives Of The Genera Trilacuna Tong And Li And Himalayana, New Genus (Araneae: Oonopidae), Bulletin of the American Museum of Natural History 2014 (387), pp. 1-108 : 95-99

Himalayana siliwalae Grismado , new species

Figures 76–78 , 82C–D

TYPES: Male holotype and two male paratypes from India: West Bengal: Darjeeling: Mahanadi near Kurseong , south side, 1200 m, leaf litter, Oct. 6, 1978, C. Besuchet and I. Löbl ( MHNG PBI_OON 15398 ); same data, one female and one male paratypes ( MHNG PBI_OON 12603 and 15812 respectively) .

ETYMOLOGY: The specific name is a noun in apposition in honor of the Indian arachnologist Manju Siliwal, and in gratitude for her help in obtaining bibliographic material and other information about goblin spiders from India.

DIAGNOSIS: H. siliwalae is the most lightly sclerotized species of the genus. Males and females have their genitalia very similar to those of H. kathmandu , but they are very small sized (total length <1.6 mm), lightly sclerotized, and with relatively reduced eyes (figs. 76, 77).

DESCRIPTION: Male (paratype, PBI_OON 15398). Total length 1.52. Cephalothorax: Carapace pars cephalica slightly elevated in lateral view, anteriorly narrowed to 0.49 times its maximum width or less, sides finely reticulate; lateral margin rebordered; nonmarginal pars cephalica setae needlelike, in U-shaped row; nonmarginal pars thoracica and marginal setae needlelike. Eyes all subequal, relatively small, PME circular, PLE circular; posterior eye row straight from above, procurved from front; ALE separated by their radius to diameter, ALE–PLE separated by less than ALE radius, PME touching. Sternum longer than wide, lateral margins unmodified, orange; setae evenly scattered. Mouthparts: chelicerae orange; fangs directed medially. Endites orange. Abdomen: Dorsum soft portions not visible from above. Book lung covers elliptical. Pedicel tube short. Dorsal scutum orange. Epigastric scutum not protruding, orange. Postepigastric scutum orange. Spinneret scutum orange. Colulus present. Legs: Orange. Leg spination (all spines longer than segment width): leg I: tibiae v2-2-2-2-0, metatarsi v2- 2-0; leg II: tibiae v2-2-2-2-0, metatarsi v2-2-0. Tarsi I–IV superior claws tooth not examined in detail. Trichobothria not examined. Genitalia: Epigastric region with sperm pore small, oval, unmodified. Palp (figs. 78C–E, 82D): femur normal size; tibia nearly as long as patella; cymbium narrow in dorsal view; bulb pale orange, distal part with acute, short, dorso-prolateral projection reaching to the half of the embolus, with one retrolateral and one prolateral accompanying laminae with filiform projections (more numerous in the latter).

Female (paratype, PBI_OON 12603). Total length 1.50. As in male except as noted. Cephalothorax: Carapace pale orange, anteriorly narrowed to between 0.5 and 0.75 times its maximum width, sides smooth. Eyes PLE–PME separated by PME radius to PME diameter. Palp without spines. Abdomen: Dorsal scutum weakly sclerotized, covering 1/2 to 3/4 of abdomen, pale yellowish (fig. 76A). Epigastric and postepigastric scuta weakly sclerotized, not fused to each other. Legs: Pale orange; patella plus tibia I shorter than carapace. Leg spination (all spines longer than segment width): leg I: tibiae v2-2-2-2-0, metatarsi v2-2-0; leg II: tibiae v2-2-2-0-0, metatarsi v2-2-0. Genitalia: Posterior receptaculum small, rounded. Anterior sclerite with acute, short lateral transverse projections (fig. 82C).

OTHER MATERIAL EXAMINED: None.

DISTRIBUTION: Known only from the type locality, at around 1200 m (the lowest altitude record for the genus).

Figures

Fig. 76. Himalayana siliwalae, new species, female (PBI_OON 12603). A. Habitus, dorsal view. B. Same, ventral view. C. Same, lateral view. D. Carapace, dorsal view. E. Same, ventral view. F. Same, lateral view. G. Same, anterior view. H. Epigastric area, ventral view.

Fig. 77. Himalayana siliwalae, new species, male (PBI_OON 15398). A. Habitus, dorsal view. B. Same, ventral view. C. Same, lateral view. D. Carapace, dorsal view. E. Same, ventral view. F. Same, lateral view.

Fig. 78. Himalayana siliwalae, new species, male (PBI_OON 15398). A. Habitus, anterior view. B. Abdomen, ventral view. C. Left palp, retrolateral view. D. Same, dorsal view. E. Same, prolateral view.

Fig. 82. Himalayana spp. genitalia. A, B. Himalayana andreae, new species. A. Female (PBI_OON 12820), internal genitalia, dorsal view. AP = apodeme; AS = anterior sclerite; PR = posterior receptacle; TP = transverse plates; arrow = gland field. B. Male (PBI_OON 12847), left palp, retrolateral view. Arrow = acute dorsal projection; GT= glandular tube. C, D. Himalayana siliwalae, new species. C. Female (PBI_OON 15812), internal genitalia, dorsal view. D. Male (PBI_OON 15398), left palp, prolateral view. E, F. Himalayana parbat, new species. E. Female (PBI_OON 15729), internal genitalia, dorsal view. F. Male (PBI_OON 15983), left palp, prolateral view.