Corythalia latior, 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 : 87-89

Corythalia latior sp. nov.

Figs 41 A–B, 59F, 66G, 69L

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Type material. Holotype: ♂: BOLIVIA: Departamento del Beni: Prov. Ballivián: Estación Biológica del Beni (Bio- sphere reserve), Forest Island I, 181 m a.s.l., 14°49’S, 66°51’W, A.D. Brescovit leg. 21 July 1993 by beating by day, Expedition SMNK / IBSP July 1993, SMNK-ARA 13643 .

Etymology. The specific name refers to the very broad embolus base circle, which is broader than in other Corythalia species (Latin adjective “latior” [comparative] means “broader”); adjective [comparative].

Diagnosis. Males distinguished from those of all other Corythalia species by the following characters in combination: embolus (E) (actual tubular section) quite long and strong [distinctly longer than width of tegulum (T) and at central section as broad as RTA and more than 1/3 the proximal width of ventral tibial bump (VTB), respectively, Figs 41A , 66G ], protruding from embolus base (EB) in a wide and large semicircle-shaped curve, but at very distal section with small curve distally, with small light tip having distal orientation; proximal to that tip with slight bulb (better recognisable in retrolaterral view, Figs 41B , 69L ); retrolateral margin of EB clearly recognisable in ventral view and not covered by E; EB moderately broad (almost as broad as 2/3 the width of T) ( Figs 41A , 66G ).

Description. Male: total length 7.1, carapace length 3.1, maximal carapace width 2.6, width of eye rectangle 1.9, opisthosoma length 3.1, opisthosoma width 2.3, fovea length 0.29. EYES: AME 0.62, ALE 0.35, PME 0.12, PLE 0.33, AME–AME 0.04, AME–ALE 0.08, PME–PME 1.65, PME–PLE 0.31, ALE–PLE 0.77, PLE–PLE 1.51, clypeus height at AME 0.33, clypeus height at ALE 0.76. Cheliceral furrow with 1 promarginal and 1 retromarginal teeth. SPINATION: palp without spines. Legs: femur I 1500, II–IV 1600; patella I–II 1000, III–IV 1010; tibia I 2005, II 3015, III–IV 3133; metatarsus I–II 2024, III 3134, IV 4134. MEASUREMENT OF PALP AND LEGS: palp 2.8 [1.0, 0.4, 0.3, 1.1], I 5.6 [1.8, 1.0, 1.2, 1.0, 0.6], II 5.6 [1.9, 1.0, 1.2, 1.0, 0.5], III 6.7 [2.1, 1.1, 1.4, 1.5, 0.6], IV 6.5 [2.0, 0.9, 1.4, 1.5, 0.7]. LEG FORMULA: 342&1 (&: legs connected with & exactly the same length). COPULATORY ORGAN: embolus (E) long [distinctly longer than width of tegulum (T)], quite broad (width of E at central section as broad as RTA and more than 1/3 the proximal width of ventral tibial bump (VTB), respectively), protruding from embolus base (EB) in a wide and large semicircle-shaped curve, but at very distal section with small curve distally, with tip having distal orientation and being lighter than subdistal section ( Figs 41A , 66G ); width of EB almost as broad as 2/3 the width of T and width of EB circle clearly broader than 4/5 the width of T; retrolateral margin of EB clearly recognisable; T slightly narrower than cymbium ( Figs 41A , 66G ); sperm duct double-stacked S-shaped, occupying about 3/4 of T from retrolateral; proximal tegulum lobe distinguished from remaining section of T; cymbium in ventral view distally conically converging, at distalmost section irregularly rounded; palpal tibia very short, clearly broader than long ( Figs 41 A–B, 66G, 69L) and ventral tibial bump in ventral view large, broad conical, distally rounded and located in prolateral half of distal half of palpal tibia; RTA in ventral view narrow, medium-sized, with retrolatero-distal direction and with dorsal serration ( Figs 41A , 66G ), in retrolateral view RTA clearly broader and dorsal serration (at distal section) clearly recognisable ( Figs 41B , 69L ). COLOURATION: see genus description for conservative aspects. Carapace dark (red-) brown ( Fig. 59F ). Legs dark brown to red-brown, except for some articles being lighter (see genus description, except distal sections of tibiae and distal sections of metatarsi) ( Fig. 59F ). Opisthosoma like noted in genus description under general dorsal colouration, chevron-like patch in central band present ( Fig. 59F ).

Female: unknown.

Remarks. Possible relationsships of C. latior sp. nov. to particular Corythalia species are hard to predict. There are similarities to C. xanthopa and C. blanda : embolus (E) retrolaterally clearly protruding from embolus base (EB) and running in a long and wide curve prolatero-distally; retrolateral margin of EB in ventral view (clearly) recognisable. However, regarding other structures these species are quite different: RTA in C. latior sp. nov. much broader ( Fig. 41B ); embolus at tip with special structures; tegulum with proximal lobe being distinguished from remaining section.

Distribution. Currently known only from the type locality in Beni, Bolivia.

Figures

FIGURE 41. Corythalia latior sp. nov., male holotype from Beni, Bolivia. A–B left palp (A ventral view; B retrolateral view).

FIGURE 59. Corythalia spp., photographic images of male specimens, dorsal view. Corythalia electa: A Lectotype from Colombia. Corythalia chalcea: B. Male AMNH-IZC 00327853 from Aragua, Venezuela. Corythalia metallica: C Holotype from St. Vincent Island. Corythalia blanda: D Paralectotype M-3 from Trinidad. Corythalia xanthopa: E Male AMNH-IZC 00326886-II from Aragua, Venezuela. Corythalia latior sp. nov.: F. Holotype from El Beni, Bolivia. Corythalia hadzji: G Lectotype from Upper Demerara-Berbice, Guyana. Corythalia trochophora Bayer, sp. nov.: H Holotype from Tungurahua, Ecuador. Corythalia lineata Bayer, sp. nov.: I Holotype from East Berbice-Corentyne, Guyana.

FIGURE 66. Corythalia spp., photographic images of left palps of male specimens, ventral view. Corythalia electa: A Lectotype from Colombia. Corythalia chalcea: Male AMNH-IZC 00327893 (B) and male AMNH-IZC 00327910-3 (C) from Aragua, Venezuela. Corythalia metallica: D Holotype from St. Vincent Island. Corythalia blanda: E Paralectotype M-3 from Trinidad. Corythalia xanthopa: F Male M-4, AMNH-IZC 00326903 from Aragua, Venezuela. Corythalia latior sp. nov.: G Holotype from El Beni, Bolivia. Corythalia hadzji: H Lectotype from Upper Demerara-Berbice, Guyana. Corythalia trochophora Bayer, sp. nov.: I Holotype from Tungurahua, Ecuador. Corythalia lineata Bayer, sp. nov.: J Holotype from East Berbice-Corentyne, Guyana. Corythalia hamulifera Bayer, sp. nov.: K Holotype from south-eastern part of Ecuador.

FIGURE 69. Corythalia spp., photographic images of left palps of male specimens, retrolateral view. Corythalia cincta: A Holotype from Presidente Hayes, Paraguay. Corythalia scutellaris Bayer, sp. nov.: B Holotype from south-eastern part of Ecuador. Corythalia waleckii: C Syntype MIZ 225794 from Cayenne, French Guiana. Corythalia tropica: D Holotype from Falcon, Venezuela. Corythalia foelixi Bayer, sp. nov.: E Holotype from Cayenne, French Guiana. Corythalia fulgipedia: F Male AMNH-IZC 00327329 from Aragua, Venezuela. Corythalia electa: G Lectotype from Colombia. Corythalia chalcea: H Male AMNH-IZC 00327893 from Aragua, Venezuela. Corythalia metallica: I Holotype from St. Vincent Island. Corythalia blanda: J Paralectotype M-1 from Trinidad. Corythalia xanthopa: K Male M-2, AMNH-IZC 00326903, from Aragua, Venezuela. Corythalia latior sp. nov.: L Holotype from Beni, Bolivia.