Ebo Keyserling 1884
Creators: name: Muster, Christoph
Publisher: name: Zenodo
Year: 2009
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Araneae
Philodromidae
Ebo

description: Genus <i>Ebo</i> Keyserling, 1884 <i>Ebo</i> Keyserling, 1884: 678. – Simon 1895: 1063; Schick 1965: 84 (subgenus <i>Ebo</i>); Sauer and Platnick 1972: 36-37 (subgenus <i>Ebo</i>); Dondale and Redner 1978: 29-30 (ad part.). <b>Type species.</b> <i>Ebo latithorax</i> Keyserling, 1884 by monotypy <b>Material examined.</b> <i>Ebo evansae</i> Sauer &amp; Platnick, 1972: USA: Utah: 4♁, 4&amp;female;, Salt Lake City, dry canyon, 40° 46’N, 111° 50’W, 11 March 1944, leg. W. Ivie (AMNH). <i>Ebo latithorax:</i> USA: Pennsylvania: 2♁, Rector, 40° 12’N, 79° 14’W, 20 June 1967, leg. B. Vogel (AMNH). <i>Ebo</i> cf. <i>latithorax</i> <i>:</i> USA: Kansas: 1♁, 5&amp;female;, Ellsworth, 38° 34’N, 98° 14’W, 23 August 1935, leg. W. Ivie (AMNH). <i>Ebo pepinensis</i> Gertsch, 1933: USA: Utah: 3♁, 3&amp;female;, west side of Utah Lake, 40° 16’N, 111° 56’W, 11 March 1934, leg. W. Ivie (AMNH). <b>Diagnosis.</b> Philodromid spiders with enlarged AME (AME size index 0.067-0.08) and extremely elongated leg II (Leg II length index 1.5-2.2). Prosoma wider than long (Fig. 11). Clypeus low (Clypeus height index &lt;0.1, Fig. 7). Leg formula 2143. Spination of legs generally reduced with species-specific modifications (males of <i>E. latithorax</i> are completely spineless), tibiae and metatarsi always without pro- and retrolateral spines. Metatarsus III and IV ventral 2-2-2 (except <i>E. latithorax</i>). Patella of male palp without apophysis, tibia with indistinct VTA (sometimes completely reduced) and small, weakly sclerotized RTA. Embolus curved, its tip flexible, pointing to retrolateral side (Fig. 2). Tegulum without apophysis. Conductor a retrolateral shallow groove. Epigyne weakly sclerotized, without atrium or grooves, epigynal suture entirely shifted to epigastric furrow. Glandular heads separated from receptacula, connected by thin ducts. <b>Remarks.</b> The Nearctic <i>Ebo</i> species were thoroughly revised by Schick (1965) and Sauer and Platnick (1972). In both these studies <i>Titanebo</i> described by Gertsch (1933) was regarded a subgenus of <i>Ebo</i>. All Nearctic species indeed share a number of characters, e.g. the lack of PTA, the curved embolus with a flexible tip and the constitution of the conductor. However, the leg spination pattern is strikingly different, with <i>Titanebo</i> resembling <i>Rhysodromus</i> (the <i>Philodromus histrio</i> group) and <i>Halodromus</i> gen. n. <i>Ebo</i> and <i>Titanebo</i> are also different in the structure of the female genitalia and in some morphometric indices (Table 1). In none of the phylogenetic analyses performed by Muster (2009) did <i>Titanebo</i> emerge as sister to <i>Ebo</i>. In conclusion, <i>Titanebo</i> clearly deserves generic re-establishment. <b>Composition and distribution.</b> The centre of diversity is undoubtly North America. Sauer and Platnick (1972) included seven Nearctic species in the subgenus <i>Ebo</i>: <i>E. contrastus</i> Sauer &amp; Platnick, 1972, <i>E. evansae</i> Sauer &amp; Platnick, 1972, <i>E. iviei</i> Sauer &amp; Platnick, 1972, <i>E. lathithorax</i> Keyserling, 1884, <i>E. merkeli</i> Schick, 1965, <i>E. pepinensis</i> Gertsch, 1933, and <i>E. punctatus</i> Sauer &amp; Platnick, 1972. Two further species were added by Platnick (1972) and Cokendolpher (1978), <i>E. bucklei</i> Platnick, 1972, and <i>E. redneri</i> Cokendolpher, 1978. Old World species described in <i>Ebo</i> are either transferred to <i>Halodromus</i> gen. n. or <i>Philodromus</i>, or they are regarded together with three Neotropical species as incertae sedis.
description: Published as part of <i>Muster, Christoph, 2009, The Ebo-like running crab spiders in the Old World (Araneae, Philodromidae), pp. 47-73 in ZooKeys 16 (16)</i> on pages 51-53, DOI: 10.3897/zookeys.16.230, http://zenodo.org/record/576477
description: {"references": ["Keyserling E (1884) Neue Spinnen aus Amerika, V. Verhandlungen der zoologisch-botanischen Gesellschaft in Wien 33: 649 - 684.", "Simon E (1895) Histoire naturelle des araignees. Roret, Paris, France, Vol. 1, pp. 761 - 1084.", "Schick RX (1965). The crab spiders of California (Araneae, Thomisidae). Bulletin of the American Museum of Natural History 129: 1 - 180.", "Sauer RJ, Platnick NI (1972) The crab spider genus Ebo (Araneida: Thomisidae) in the United States and Canada. Canadian Entomologist 104: 35 - 60.", "Dondale CD, Redner JH (1978) The insects and arachnids of Canada, Part 5. The crab spiders of Canada and Alaska, Araneae: Philodromidae and Thomisidae. Research Branch, Agriculture Canada, Publication 1663: 1 - 255.", "Gertsch WJ (1933) New genera and species of North American spiders. American Museum Novitates 636: 1 - 28.", "Muster C (2009) Phylogenetic relationships within Philodromidae, with a taxonomic revision of the Philodromus subgenus Artanes in the western Palearctic (Arachnida: Araneae). Invertebrate Systematics 23: 135 - 169.", "Platnick NI (1972) Notes on the pepinensis group of the crab spider genus Ebo (Araneae: Thomisidae). Psyche 79: 58 - 60.", "Cokendolpher JC (1978) A new species of Ebo from north-central Texas (Araneida: Philodromidae). Journal of Arachnology 6: 227 - 229."]}