The lace-sheet-weavers — a long story (Araneae: Psechridae: Psechrus)
FIGURES 2a–i. Psechrus argentatus from Indonesia. a–d ♂ SB 602 from Ambon. e–f ♀ SB 676 from Irian Jaya Tengah Prov. g–i ♀ SB 598 from Ambon. a–c ♂ palp (a prolateral, b ventral, c retrolateral view). d ♂ right palpal femur, retrolateral view. e Labium and gnathocoxae, ventral view. f Sternum, ventral view. g Epigyne, ventral view. h Vulva, dorsal view. i Schematic course of internal duct system. C: Conductor; CD: Copulatory duct; E: Embolus; EF: Epigynal field. EM: Epigynal muscle silliga; FD: Fertilisation duct; LL: Lateral lobe; MS: Median septum; SBA: Spermathecal base; SD: Sperm duct; SH: Spermathecal head; SO: Slit sense organ; ST: Subtegulum; T: Tegulum.
FIGURES 3a–i. Psechrus argentatus from Indonesia, Papua Prov. a–c, g ♂ SB 225, h–i ♀ SB 224 (both syntypes of P. castaneus). d–f ♂ SB 259. a–c, d–f ♂ palp (a, d prolateral, b, e ventral, c, f retrolateral view). g ♂ left palpal femur, retrolateral view. i Epigyne, ventral view. h Vulva, dorsal view.
FIGURES 4a–h. Psechrus argentatus, ♀ primordial and adult copulatory organ. a, g ♀ SB 174 from Papua New Guinea, Morobe Prov. b, h ♀ SB 257 from Papua New Guinea, New Britain. d–e s.a. ♀ SB 593 from Indonesia, Ambon. c ♀ SB 171, f ♀ SB 571 both from Indonesia, Sulawesi. a–c Epigyne, ventral view. f–h Vulva, dorsal view. d Pre-epigyne, ventral view. e Prevulva, dorsal view.
FIGURES 84a–i. Psechrus spp., photos of left ♂ palp, ventral view. a P. argentatus. b–c P. libelti. d P. kinabalu. e P.mulu. f P. ulcus sp. nov. g P. decollatus sp. nov. h P. singaporensis. i P.elachys sp. nov. a ♂ SB 1107 from Papua New Guinea. b s.a. ♂ syntype SB 339 from Indonesia, Sumatera Selatan Prov. c ♂ SB 203 from Thailand, Song Khla Prov. d ♂ holotype SB 237 from Malaysia, Borneo, Sabah Prov. e ♂ holotype SB 242 from Malaysia, Borneo, Sarawak Prov. f ♂ holotype SB 141 from Indonesia, Kalimantan Selatan Prov. g ♂ paratype SB 857 from Indonesia, Jawa Timur Prov. h ♂ SB 507 (syntype of P. curvipalpis) from Malaysia, Selangor Prov. i ♂ paratype SB 862 from Thailand, Satun Prov.
FIGURES 87a–k. Psechrus spp., photos of epigyne, ventral view. a P. argentatus. b P. libelti. c P. mulu. d P. borneo. e P. annulatus. f P. aluco sp. nov. g P. decollatus sp. nov. h P. singaporensis. i P. elachys sp. nov. j P.norops sp. nov. k P. arcuatus sp. nov. a ♀ SB 608 from Indonesia, Maluku Prov. b ♀ SB 969 from Brunei Darussalam. c ♀ paratype SB 239 from Malaysia, Borneo, Sarawak Prov. d ♀ holotype SB 279 from Indonesia, Kalimantan Timur Prov. e ♀ lectotype SB 829 from Indonesia, Jawa Tengah Prov. f ♀ holotype SB 123 from Indonesia, Jawa Barat Prov. g ♀ holotype SB 501 from Indonesia, Jawa Timur Prov. h ♀ SB 864 from Malaysia, Selangor Prov. i ♀ holotype SB 861 from Thailand, Satun Prov. j ♀ holotype SB 860 from Malaysia, Pahang Prov. k ♀ holotype SB 333 from Indonesia, Sumatera Barat Prov.
FIGURES 90a–k. Psechrus spp., photos of vulva, dorsal view. a P. argentatus. b P. libelti. c P. mulu. d P. borneo. e P. annulatus. f P. aluco sp. nov. g P. decollatus sp. nov. h P. singaporensis. i P. elachys sp. nov. j P.norops sp. nov. k P. arcuatus sp. nov. a ♀ SB 551 from Papua New Guinea, Morobe Prov. b ♀ SB 87 from Indonesia, Sumatra, Mentawei Islds. c ♀ SB 253 from Malaysia, Borneo, Sarawak Prov. d ♀ holotype SB 279 from Indonesia, Kalimantan Timur Prov. e ♀ lectotype SB 829 from Indonesia, Jawa Tengah Prov. f ♀ holotype SB 123 from Indonesia, Jawa Barat Prov. g ♀ holotype SB 501 from Indonesia, Jawa Timur Prov. h ♀ SB 220 from Singapore. i ♀ holotype SB 861 from Thailand, Satun Prov. j ♀ holotype SB 860 from Malaysia, Pahang Prov. k ♀ holotype SB 333 from Indonesia, Sumatera Barat Prov.
FIGURES 6a–e. Psechrus libelti, ♂ palp and palpal femur. a–c, e ♂ SB 612 from India?, Nicobar Islands? d ♂ SB 203 from Thailand, Songkhla Prov. a–d ♂ palp (a prolateral, b, d ventral, c retrolateral view). e ♂ left palpal femur, retrolateral view. Remark: In Fig. 6d tegulum deformed (specimen presumably died directly after final moult).
Wau Ecological Institute & E. I. Schlinger