Philodromus Walckenaer, 1826

Muster, Christoph, 2009, The Ebo-like running crab spiders in the Old World (Araneae, Philodromidae), ZooKeys 16 (16), pp. 47-73: 55

publication ID 10.3897/zookeys.16.230

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Philodromus Walckenaer, 1826


Genus Philodromus Walckenaer, 1826   ad part. (the Philodromus histrio   species group)

Rhysodromus Schick, 1965: 67.

Philodromus histrio   species group – Dondale and Redner 1975: 370, 372; Szita and Logunov 2008: 25-27.

Type species of Rhysodromus: Thomisus histrio Latreille, 1819   .

Diagnosis. Philodromus   spiders with some Ebo   -like characters: AME larger than other eyes (AME size index 0.035-0.06), leg II moderately elongated (Leg II length index 1.1-1.4). Prosoma longer than wide (or at least as wide as long). Clypeus high (Clypeus height index> 0.16, Fig. 10 View Figures 7-16. 7, 11 ). Spination of legs similar to Halodromus   and Titanebo   , but more variable. Metatarsus III and IV ventral 2-2-2 (if always?). Patella of male palp usually without apophysis, in subgenus Locupletes Schick, 1965 with small apical apophysis (<1/4 length of patella), palpal tibia with 0-2 apophyses. Embolus stout, its tip pointing to cymbium tip. PTA present or absent. Conductor a membraneous outgrowth at anterior margin of tegulum. Female genitalia not clearly distinguishable from Halodromus   .

Remarks. The eastern-Palaearctic species of the Philodromus histrio   group were recently reviewed by Szita and Logunov (2008), but delineation of the taxon remained vague and no evidence for monophyly of the included species was provided. The histrio   group in its current limits is most likely an artificial assemblage of superficially similar species. A recent cladistic analysis within Philodromidae ( Muster 2009)   has shown that histrio   and related species are more closely related to the Thanatini ( Thanatus   and Tibellus   ) than to other Philodromus   species groups. Thus, Rhysodromus clearly deserves re-elevation to genus rank, but the urgently required revision of the histrio   group from a phylogenetic perspective is beyond the scope of this study.

Composition and distribution. Szita and Logunov (2008) include 16 species from the eastern Palearctic in the Philodromus histrio   group. In the Nearctic the taxon is represented by three polytypic species ( Schick 1965; Dondale and Redner 1975). The group also occurs in the Mediterranean and in (northern) Africa, but species from this region still await a proper revision. Philodromus halophilus ( Levy, 1977)   comb. n. is transferred from Ebo   to this group. The male lacks a patellar apophysis and the morphometric indices fall well within the range of the histrio   group.












Philodromus Walckenaer, 1826

Muster, Christoph 2009

Philodromus histrio

Szita E & Logunov DV 2008: 25
Dondale CD & Redner JH 1975: 370

Rhysodromus Schick, 1965: 67