Corythalia gasnieri, Bayer & Höfer & Metzner, 2020

Bayer, Steffen, Höfer, Hubert & Metzner, Heiko, 2020, Revision of the genus Corythalia C. L. Koch, 1850, part 1: Diagnosis and new species from South America (Araneae: Salticidae: Salticinae: Euophryini), Zootaxa 4806 (1), pp. 1-144 : 40-41

Corythalia gasnieri sp. nov.

Figs 19 A–B, 57I, 65A, 68I

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Type material. Holotype: ♂, BRAZIL: Amazonas : Manaus, Reserva Ducke, ca. 2°55’50”S, 59°58’30”W, non-in- undated primary forest, H. Höfer & T. Gasnier leg. 28 Sep. 1992, in a funnel trap on a tree trunk in approximately 2 m height above ground, field number BE I/1, interim deposition SMNK-ARA 02507 , final deposition INPA.

Etymology. The specific name is a patronym in honour of the Brazilian project partner, arachnologist and cocollector of the holotype, Thierry Gasnier; noun (name) in genitive case.

Diagnosis. Males distinguished from those of all other Corythalia species by the following characters in combination: embolus (E) subdistally slightly fusiformly broadened; tip of E prolatero-distally with very small and fine candle-flame-like protrusion ( Figs 19A , 65A ); in retrolateral view E centrally at distal half abruptly converging with distalmost fourth of E having only less than 1/3 the width of the central section ( Figs 19B , 68I ); Tegulum (T) broader than cymbium (even though minimally).

Description. Male: total length 4.5, carapace length 2.0, maximal carapace width 1.4, width of eye rectangle 1.3, opisthosoma length 2.0, opisthosoma width 1.5, fovea length 0.11. EYES: AME 0.42, ALE 0.26, PME 0.05, PLE 0.23, AME–AME 0.03, AME–ALE 0.04, PME–PME 1.12, PME–PLE 0.21, ALE–PLE 0.55, PLE–PLE 0.88, clypeus height at AME 0.18, clypeus height at ALE 0.45. Cheliceral furrow with 1 promarginal and 1 retromarginal teeth. SPINATION: palp: no spines. Legs: femur I–III 1500, IV 1600; patella I–II 1000, III–IV 1010; tibia I–II 2001, III–IV 2123; metatarsus I 2004, II 2014, III–IV 3134. MEASUREMENT OF PALP AND LEGS: palp 1.6 [0.6, 0.2, 0.2, 0.6], I 3.1 [1.0, 0.5, 0.7, 0.5, 0.4], II 3.0 [1.0, 0.5, 0.6, 0.5, 0.4], III 4.1 [1.3, 0.6, 0.8, 0.9, 0.5], IV 4.0 [1.3, 0.5, 0.8, 0.9, 0.5]. LEG FORMULA: 3412. COPULATORY ORGAN: embolus (E) medium-sized, hose-shaped, subdistally slightly fusiformly broadened and tip prolatero-distally with very small and fine candle flame-like protrusion ( Figs 19A , 65A ); E in retrolateral view pre-subdistally abruptly converging, with distal section distinctly narrower ( Figs 19B , 68I ); E arising at centro- to prolatero-proximal section of embolus base (EB); EB circle half as broad as tegulum (T) or slightly more; T compact, minimally broader than cymbium and without

clearly distinguished prolateral tegulum lobe but T rather blunt-rounded conically converging retrolatero-proximally ( Figs 19A , 65A ); sperm duct double-stacked S-shaped, occupying retrolateral 2/3 of T ( Figs 19A , 65A ). Cymbium distally blunt conically converging and distally rounded ( Figs 19A , 65A ). Palpal tibia about as broad as long ( Figs 19 A–B, 65A, 68I) and ventral tibial bump not far reaching ventrally ( Figs 19B , 68I ). RTA quite slim and with dorsal serration ( Figs 19 A–B, 65A, 68I) covering about distal 2/5 of RTA ( Figs 19B , 68I ). COLOURATION: see genus description for conservative aspects. Carapace dark brown to dark red-brown ( Fig. 57G ). Legs dark brown to red-brown, except for some articles being lighter (see genus description) ( Fig. 57G ). Opisthosoma like noted in genus description under general dorsal colouration, but as many hairs are rubbed-off and cuticle has separated from subcuticle it is impossible to make a statement on the existence of a chevron-like patch in central band ( Fig. 57G ).

Female: unknown.

Remarks. It is difficult to predict possible relationships of C. gasnieri sp. nov. In our opinion there are no Corythalia species showing very similar characters as far as the male copulatory organ is concerned.

Distribution. Known only from the type locality in Central Amazonia, Brazil.

Figures

FIGURE 19. Corythalia gasnieri sp. nov., male holotype from Amazonas, Brazil. A–B left palp (A ventral view; B retrolateral view).

FIGURE 57. Corythalia spp., photographic images of male specimens, dorsal view. Corythalia latipes: A Neotype from Bahia, Brazil. Corythalia conferta sp. nov.: B Paratype M-1, IBSP 131451, from São Paulo, Brazil. Corythalia drepane sp. nov.: C Holotype from Amazonas, Brazil. Corythalia antepagmenti sp. nov.: D Paratype from Acre, Brazil. Corythalia ricti Bayer, sp. nov.: E Holotype from East Berbice-Corentyne, Guyana. Corythalia parva: F Lectotype from Brazil. Corythalia protensa sp. nov.: G Holotype from Amazonas, Brazil. Corythalia placata: H Male MCZ 20545-II (Paralectotype of Dynamius blandus) from Trinidad. Corythalia gasnieri sp. nov.: I Holotype from Amazonas, Brazil.

FIGURE 65. Corythalia spp., photographic images of left palps of male specimens, ventral view. Corythalia gasnieri sp. nov.:A Holotype from Amazonas, Brazil. Corythalia fimbriata: B Lectotype from Bahia, Brazil. Corythalia argentinensis: C Holotype from Misiones, Argentina. Corythalia luctuosa: D Lectotype from St. Laurent du Maroni, French Guiana. Corythalia cincta: E Holotype and F Male NHMB 1217a (holotype of Taeoma barbipes) from Presidente Hayes, Paraguay. Corythalia scutellaris Bayer, sp. nov.: G Holotype from south-eastern part of Ecuador. Corythalia waleckii: H Syntype MIZ 225794 from Cayenne, French Guiana. Corythalia tropica: I Holotype from Falcon, Venezuela. Corythalia foelixi Bayer, sp. nov.: J Holotype and K Paratype from Cayenne, French Guiana. Corythalia fulgipedia: L Male AMNH-IZC 00327822-1 from Aragua, Venezuela.

FIGURE 68. Corythalia spp., photographic images of left palps of male specimens, retrolateral view. Corythalia latipes: A Neotype from Bahia, Brazil. Corythalia conferta sp. nov.: B Paratype M-1, IBSP 131451, from São Paulo, Brazil. Corythalia drepane sp. nov.: C Holotype from Amazonas, Brazil. Corythalia antepagmenti sp. nov.: D Paratype from Acre, Brazil. Corythalia ricti Bayer, sp. nov.: E Holotype from East Berbice-Corentyne, Guyana. Corythalia parva: F Lectotype from Brazil. Corythalia protensa sp. nov.: G Holotype from Amazonas, Brazil. Corythalia placata: H Male MCZ 20545-II (Paralectotype of Dynamius blandus) from Trinidad. Corythalia gasnieri sp. nov.: I Holotype from Amazonas, Brazil. Corythalia fimbriata: J Lectotype from Bahia, Brazil. Corythalia argentinensis: K Holotype from Misiones, Argentina. Corythalia luctuosa: L Lectotype from St. Laurent du Maroni, French Guiana.