A new semi-cryptic Filistata from caves in the Levant with comments on the limits of Filistata insidiatrix (Forsskål, 1775) (Arachnida: Araneae: Filistatidae) Author Magalhaes, Ivan L. F. 799DF5B9-9085-4E58-BE36-371CFADED8AA División Aracnología, Museo Argentino de Ciencias Naturales “ Bernardino Rivadavia ”, Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Av. Ángel Gallardo 470, C 1405 DJR, Buenos Aires, Argentina. magalhaes@macn.gov.ar Author Aharon, Shlomi FB5EEA73-DD16-440C-B611-07F1C0C1300B The National Natural History Collections, Edmond J. Safra Campus, Givat Ram, The Hebrew University of Jerusalem, Jerusalem 9190401, Israel. & The Department of Ecology, Evolution and Behavior, Edmond J. Safra Campus, Givat Ram, The Hebrew University of Jerusalem, Jerusalem 9190401, Israel. shlomi.aharon@gmail.com Author Ganem, Zeana 01B74564-251F-4586-98E9-48B526D69FB2 The National Natural History Collections, Edmond J. Safra Campus, Givat Ram, The Hebrew University of Jerusalem, Jerusalem 9190401, Israel. & The Department of Ecology, Evolution and Behavior, Edmond J. Safra Campus, Givat Ram, The Hebrew University of Jerusalem, Jerusalem 9190401, Israel. zeana.ganem@mail.huji.ac.il Author Gavish-Regev, Efrat FC073F19-2202-4C89-8B43-CEA4CC5E2D50 The National Natural History Collections, Edmond J. Safra Campus, Givat Ram, The Hebrew University of Jerusalem, Jerusalem 9190401, Israel. efrat.gavish-regev@mail.huji.ac.il text European Journal of Taxonomy 2022 2022-07-25 831 149 174 http://dx.doi.org/10.5852/ejt.2022.831.1875 journal article 10.5852/ejt.2022.831.1875 dac72712-c4a7-4a1c-9de0-3ea1c95cecd2 2118-9773 6916932 C82D605B-9BE0-47D1-89E3-8C978CA48B4D Key to the Filistatidae of Israel and Palestine The key below can be used to identify known species of crevice weavers from Israel and Palestine . For more information, readers are referred to recent taxonomic revisions of Zaitunia Lehtinen, 1967 ( Zonstein & Marusik 2016 ), Filistata ( Zonstein & Marusik 2019 ; Zamani & Marusik 2020 ) and Sahastata Benoit, 1968 ( Magalhaes et al . 2020 ; Gavish-Regev et al . 2022 ). Although Pritha Lehtinen, 1967 has not been thoroughly revised, valuable taxonomic information for several species is available in scattered works ( Brignoli 1982 ; Marusik & Zamani 2015b ; Legittimo et al . 2017 ; Zonstein & Marusik 2019 ). 1. Tarsi without macrosetae; abdomen dorsally with white setae (in males, in one or two large patches) ( Fig. 10H, I ); female with calamistrum with three rows of inconspicuous setae ( Fig. 10B ); males with rigid leg tarsi, not flexible; male cymbium shorter than wide ( Fig. 10L ); male sperm duct with a single coil ( Fig. 10L )............. Prithinae: Pritha Lehtinen, 1967 [three described species in Israel : Pritha albimaculata (O. Pickard-Cambridge, 1872) , Pritha hirsuta (O. Pickard-Cambridge, 1872) and Pritha tenuispina (Strand, 1814) , in addition to undescribed species; genus in need of revision]. – Tarsi with macroseta ( Fig. 10A ; difficult to see in Zaitunia ); white setae absent from abdomen; female calamistrum with conspicuous setae ( Fig. 10C–E ); males with flexible leg tarsi ( Fig. 10F ); male cymbium longer than wide ( Figs 10M, N , 8 ); male sperm duct with at least two coils ( Figs 10M–N , 8 )............................................................................................................ 2 ( Filistatinae Simon, 1864 ) 2. Females with continuous calamistrum, with three rows with many setae (15 or more) ( Fig. 10C ); large spiders (females with body length around 10 mm ); females dark brown to black ( Fig. 10G ) and males light cream; males of Israeli species unknown, but based on congeners, should have pedipalpal femur with dorsal and ventral macrosetae ......................................................................... ...................................... Sahastata Benoit, 1968 [a single known species in Israel , known currently only from females, Sahastata aravaensis Ganem, Magalhaes, Zonstein & Gavish-Regev, 2022 ]. Fig. 10. Filistatid morphology. A . Filistata insidiatrix ( Forsskål, 1775 ) , ♀, leg tarsus, arrow points to macrosetae. B . Pritha nana (Simon, 1968) , arrow points to right calamistrum. C . Sahastata aravaensis Ganem et al. , 2022 , left calamistrum. D . Zaitunia schmitzi Kulczyński, 1911 , left calamistrum, arrow points to gap between setae. E . Filistata insidiatrix , left calamistrum. F . Filistata lubinae Zonstein & Marusik, 2019 , ♂, tarsus I. G . Sahastata aravaensis , ♀. H . Pritha IFMsp185, ♀. I . Pritha sp. , male abdomen, dorsal view. J . Zaitunia schmitzi , ♂. K . Zaitunia schmitzi , spermathecae ventral view. L . Pritha tenuispina (Strand, 1914) , ♂, left pedipalp, prolateral view, arrow points to cymbium. M . Filistata lubinae , left copulatory bulb, prolateral view. N . Zaitunia schmitzi , ♂, left pedipalp, prolateral view, arrow points to cymbium. O . Filistata albens Zonstein & Marusik, 2019 , left copulatory bulb, prolateral view. P . Zaitunia schmitzi , male clypeus, lateral view, arrow points to stout setae. Q . Filistata insidiatrix , female clypeus, lateral view. Scale bars = 0.2 mm. – Females with discontinuous calamistrum interrupted by a medial gap, with staggered rows with few setae (10 or less) ( Fig. 10D–E ); small to medium spiders (adults with body length around 3–6 mm ); females brown or light cream ( Figs 7 , 10J ); males with pedipalpal femur without dorsal macrosetae (ventral macrosetae present in Filistata , difficult to see in Zaitunia )................................................ 3 3. Brown spiders, with subrounded carapace ( Fig. 10J ); steep clypeus with strong, erect setae ( Fig. 10P ); females with two separate pairs of spermathecae ( Fig. 10K ); male cymbium without two strong and elongated prolateral setae; male pedipalpal tibia short, at most 2 times as long as wide ( Fig. 10N ) ... Zaitunia Lehtinen, 1967 [a single known species in Israel , Zaitunia schmitzi (Kulczyński, 1911) ]. – Light cream spiders, with carapace longer than wide ( Fig. 7 ); flat clypeus, without particularly strong setae ( Fig. 10Q ); females with a single pair of spermathecae ( Fig. 9 ), or if with two pairs, these are partly fused ( Fig. 3B–C ); male cymbium with two strong prolateral setae ( Fig. 8B ); male pedipalpal tibia long, at least three times as long as wide ( Fig. 8A )..................................................................... ........................................................................................ 4 ( Filistata Latreille, 1810 ) [four described species in Israel , of those four species, only the females of F. insidiatrix and F. betarif are known, and are not morphologically diagnosable; thus, the remainder of the key refers only to males]. 4. Male copulatory bulb short and stout, with long and coiled embolus ( Fig. 10M ); carapace subrounded..................................................................... Filistata lubinae Zonstein & Marusik, 2019 – Male copulatory bulb subconical ( Figs 8 , 10O ), embolus not coiled; carapace longer than wide.... 5 5. Sperm duct loosely packed, with space between coils; copulatory bulb shorter (ca 80% of cymbium length), with ventral side nearly straight ( Fig. 10O ) ....... Filistata albens Zonstein & Marusik, 2019 – Sperm duct tightly packed ( Fig. 8 ), without space between coils; copulatory bulb longer (almost as long as cymbium), with ventral side curved inwards ........................................................................ 6 6. Embolic keel conspicuous ( Figs 3H , 8G , 5A ) .............................................. Filistata betarif sp. nov. – Embolic keel inconspicuous ( Fig. 3I , 8H , 5B ) .......................... Filistata insidiatrix ( Forsskål, 1775 )