Three new species of the oonopid spider genus Ischnothyreus (Araneae: Oonopidae) from Tioman Island (Malaysia) Kranz-Baltensperger, Yvonne Zootaxa 2012 2012-01-16 3161 1 37 47 3Q66F Kranz-Baltensperger, 2012 [151,400,151,177] Arachnida Oonopidae Ischnothyreus Animalia Araneae 6 43 Arthropoda species namo sp. nov.  ( Figs 5–6, 7)    Typematerial.   Holotype: male( PBI_OON 00012688), MALAYSIA:  TiomanIsland(= Pulau Tioman), Gunung Kajang,  900–1000m, 2°46’0”N, 104°09’4”E,  29.IV.2005, leg. A. Schulz, MHNG.   Paratypes: 1 female( PBI_OON 00032382), collected with holotype, MHNG.  1 female( PBI_OON 00015670),  TiomanIsland, westside,  2 kmSE of Kampung Genting,  100m, 2°47’N, 104°8’E,  27.VI.2001, leg. A. Schulz& K. Vock, MHNG.  1 male( PBI_OON 00012604),  TiomanIsland, Gunung Kajang,  500–600m, 2°46’0”N, 104°09’4”E,  25.IV.2005, leg. A.Schulz, MHNG.  2 females( PBI_OON 00012646), same data as holotype, but  27.IV.2005, MHNG.  1 female( PBI_OON 00032352),  TiomanIsland, path from Kampung Payato Gunung Kajang,  200–600m, 02°46’84”N, 104°07’63”E,  6.–7.VI.2007. leg. A. Schulz, MHNG.  1 female( PBI_OON 00032353),  TiomanIsland, westside of Gunung Kajang,  2 kmE of Kampung Genting,  400m, 2°47’N, 104°8’E,  2.VII.2001, leg. A. Schulz& K. Vock, MHNG.  1 female( PBI_OON 00015672), same data as PBI_OON 0 0 0 32353, but  300–400m,  3.VII.2001, MHNG.   Etymology.The specific name is an arbitrary combination of letters.   Diagnosis.The male of  I. namocan be distinguished from males of  I. tiomanand  I. tekekby the lack of the cheliceral apophyses and the simple palp.  I. namoresembles  I. aculeatus( Simon 1893)from Sumatra and the Philippinesbut can be distinguished from this species by the abdominal scuta, which cover almost the whole abdomen ( Fig. 5A–F), while they are short in  I. aculeatus. The female of  I. namoshows a very distinct epigastric conformation with strongly sclerotized apodemes and a strongly winding tube ( Fig. 6C–E).   Description.Male. Total length 1.49 mm. Carapace: slightly elevated in lateral view, fovea present, lateral margin rebordered. Eyes: ALE separated by less than their radius. Mouthparts: Chelicerae slightly divergent, base of fang slightly enlarged, ridges (r) and three trichobothria-like setae present on the anterior face of the paturon (arrows) ( Fig. 5D). Anterior margin of labium indented at middle. Anteromedian tip of endites with one strong, tooth-like projection (stp) ( Fig. 5B). Abdomen: Scutum extending far dorsal of pedicel. Dorsal scutum covering more than 3/4 of abdomen, more than 1/2 to most of abdomen width, not fused to epigastric scutum. Legs: spine formula: femora: I p0-1-1; II p0-0-1; tibiae: I, II p2-1-1; r2-1-1; metatarsi: I, II p1-1-0; r1-1-0. Trichobothria not examined. Genitalia: Trochanter with small ventral projection (vp) ( Fig. 5B); tibia with three trichobothria, distal part of bulb simple, with small prolateral membrane (mo) and retrolateral lobe (l), embolus (e) thin and short, directed backwards ( Fig. 5E–F).   FIGURE 7.A. Overview map of Southeast Asia. B. Detailed map of TiomanIsland with localities of  Ischnothyreusspecies treated in the present study. Female: Total length 1.39 mm. As in male except as noted. Carapace: without any pattern, broadly oval in dorsal view, pars cephalica strongly elevated in lateral view, fovea absent. Eyes: ALE separated from edge of carapace by less than their radius. ALE touching. Mouthparts: Labium not fused to sternum, anterior margin not indented at middle. Anteromedian tip of endites unmodified. Palpal femur with four spines, palpal tibia with three trichobothria. Abdomen: Pedicel scutum not extending far dorsal of pedicel. Dorsal scutum covering less than 1/2 of abdomen, between 1/4 and 1/2 abdomen width. Epigastric scutum slightly protruding. Postepigastric scutum widely hexagonal, only around epigastric furrow, not fused to epigastric scutum, with short posteriorly directed lateral apodemes. Dense patch of setae anterior to spinnerets present. Legs: spine formula: femora: I p0-1-1; r0-1-0; II p0- 0-1; r0-0-1; tibiae: I, II p2-1-1; r2-1-1; metatarsi: I, II p1-1-0; r1-1-0. Genitalia: The posterior margin of the epigastric scutum is lined with numerous needle-like setae. Postepigastric scutum with strongly sclerotized apodemes (a), connected by transverse ridge (tr). Dark, winding tube running posteriorly (wt) ( Fig. 6D–F).   Distribution. TiomanIsland. 3449482308 2005-04-29 MHNG A. Schulz Malaysia 950 2.7666667 Gunung Kajang 21 104.151115 Pulau Tioman 6 43 PBI_OON 00012688 1 1 Tioman Island holotype 3449482314 2005-04-29 MHNG A. Schulz Malaysia 950 2.7666667 Gunung Kajang 21 104.151115 Pulau Tioman 6 43 PBI_OON 00032382 1 1 Tioman Island paratype 3449482313 2001-06-27 MHNG A. Schulz & K. Vock Malaysia 100 2.7833333 Kampung Genting 1307 104.13333 6 43 PBI_OON 00015670 1 1 Tioman Island paratype 3449482318 2005-04-25 MHNG A. Schulz Malaysia 550 2.7666667 Gunung Kajang 21 104.151115 6 43 PBI_OON 00012604 1 1 Tioman Island paratype 3449482319 [250,1186,438,462] 2005-04-27 MHNG A. Schulz Malaysia 950 2.7666667 Gunung Kajang 21 104.151115 Pulau Tioman 6 43 PBI_OON 00012646 2 2 Tioman Island paratype 3449482315 2007-06-06 2007-06-07 2007-06-06 MHNG A. Schulz Malaysia 400 2.79 Gunung Kajang 21 104.13417 Kampung Paya 6 43 PBI_OON 00032352 1 1 Tioman Island paratype 3449482307 2001-07-02 MHNG A. Schulz & K. Vock Malaysia 400 2.7833333 Kampung Genting 1307 104.13333 Gunung Kajang 6 43 PBI_OON 00032353 1 1 Tioman Island paratype 3449482302 2001-07-03 MHNG A. Schulz & K. Vock Malaysia 350 2.7833333 Kampung Genting 1307 104.13333 Gunung Kajang 6 43 PBI_OON 00015672 1 1 Tioman Island paratype