Dysderoides kaew Grismado and Deeleman, 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 : 20

Dysderoides kaew Grismado and Deeleman , new species

Figure 9

TYPES: Female holotype from Thailand: Kanchanaburi Province: Amphoe Sai Yok: Sai Yok National Park : Tham (= cave) Kaew , cave, 14.43333 ° N, 98.86666 ° E, F. Stone coll., Aug. 1, 1981 ( RMNH PBI_OON 43180 ) , same locality and collector, one female paratype, Aug. 7, 1986 (RMNH PBI_OON 43182).

ETYMOLOGY: The specific name is a noun in apposition taken from the type locality.

DIAGNOSIS: The female of Dysderoides kaew are similar to the other known Thai species by having a single transverse plate on the female genitalia, but can be distinguished by the ovoid, apparently bipartite posterior receptacle, by the widened, bilobed tip of the anterior sclerite, and by the anteriorly directed lateral extensions of the posterior transverse plate (fig. 9G–H).

DESCRIPTION: Female (holotype, PBI_OON 43180). Total length 1.62. Cephalothorax: Carapace yellow-brown. Clypeus sloping forward in lateral view; setae absent. Sternum yellow-brown, posterior margin extending posteriorly beyond anterior edges of coxae IV as single extension, all setae seem to be lost, but their bases remain, mostly at base of coxae. Mouthparts: chelicerae, endites, and labium yellow-brown, cheliceral setae light. Abdomen: Dorsal scutum absent, dorsum soft portions pale white. Book lung covers round. Pedicel tube short, unmodified. Epigastric and postepigastric scuta very weakly sclerotized, pale yellow. Spinneret scutum present, incomplete ring, very narrow, without fringe of setae. Dorsum setae light. Epigastric area setae light. Postepigastric area setae light. Legs: Yellow-brown (legs III–IV paler, almost white). 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; leg III: tibiae dp2-2, v2subap; leg IV: tibiae dp2-2, v2subap, metatarsi dp2-2, v1-0-2subap. Tarsi I–IV superior claws tooth not examined in detail. Trichobothria not examined. Genitalia: Anterior sclerite narrow, with small, bilobed anterior tip. Posterior receptacle ovoid, with an apparent posterodorsal lobe. Copulatory opening visible, posterior to the epigastric furrow. Only the posterior transverse epigastric plate is present, with lateral endings forwardly directed (fig. 9G, H).

Male: Unknown.

OTHER MATERIAL EXAMINED: THAILAND: Kanchanaburi Province: Amphoe Sai Yok: Sai Yok National Park: Tham Khang Khao (= Bat Cave), Cave, 14.41666 ° N, 98.88333 ° E, Aug. 5, 1981, F. Stone coll., 1♀ (RMNH PBI_OON 43181) .

DISTRIBUTION: Known only from two caves in the type locality.

Figures

Fig. 9. Dysderoides kaew, new species, female (A–G, PBI_OON 43180; H, PBI_OON 43182). 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. Epigastric area, ventral view. H. Vulva, cleared, ventral view (arrow = copulatory opening).