Corythalia lineata Bayer, 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 : 94-95

Corythalia lineata Bayer , sp. nov.

Figs 45 A–B, 59I, 66J, 70C

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Type material. Holotype: ♂, GUYANA: East Berbice-Corentyne: Canje-Ikuruwa River, Forest Savanna , ca. 57°30’W, 05°42’N, about 25 m a.s.l., George Bentley leg. Aug.–Dec. 1961, AMNH-IZC 00327077 - II (ex. AMNH- IZC 00327077 ).

Etymology. The specific name refers to the central light transverse band on the opisthosoma of the male holotype, which is narrow and exactly straight (Latin subject “linea” means “line”; “lineatus” means “drawn after a straight line [or perpendicular]”); adjective.

Diagnosis. Males distinguished from those of all other Corythalia species by the following characters in combination: embolus (E) (actual tubular section) quite long [longer than width of tegulum (T)], centrally relatively broad (broader than RTA in ventral view), main section retrolaterally with semicircle course and distal third very narrow and with irregularly bifurcated tip having a quite long, light, minimally curved and slender retrolatero-distal extension and a tiny, conical prolateral process ( Figs 45A , 66J ); base of E (EB) in ventral view compressed round and moderately long [shorter than 2/5 the length of entire T (including EB)]; EB circle very broad,> 3/4 the width of T; proximal tegulum lobe covering more than 1/2 but less than 2/3 of palpal tibia ( Figs 45A , 66J ).

Description. Male: total length 6.7, carapace length 3.1, maximal carapace width 2.1, width of eye rectangle

2.0, opisthosoma length 2.9, opisthosoma width 2.0, fovea length 0.24. EYES: AME 0.67, ALE 0.43, PME 0.11, PLE 0.37, AME–AME 0.04, AME–ALE 0.07, PME–PME 1.75, PME–PLE 0.26, ALE–PLE 0.79, PLE–PLE 1.41, clypeus height at AME 0.39, clypeus height at ALE 0.81. Cheliceral furrow with 2 promarginal (including one additional, even smaller tooth then regular promarginal tooth, both directly in contact with each other) and 1 retromarginal teeth. SPINATION: palp without spines. Legs: femur I 1500, II 1600, III 1600 {1500}, IV 1600; patella I 1000, II–IV 1010; tibia I 2003, II 3013, III 3123, IV 3133; metatarsus I 2014, II 2024, III 3134, IV 5144. MEA- SUREMENT OF PALP AND LEGS: palp 2.5 [0.9, 0.3, 0.4, 0.9], I 5.5 [1.8, 0.8, 1.2, 1.1, 0.6], II 5.7 [1.9, 0.9, 1.2, 1.1, 0.6], III 7.2 [2.3, 1.0, 1.6, 1.7, 0.6], IV 6.6 [2.1, 0.8, 1.4, 1.7, 0.6]. LEG FORMULA: 3421. COPULATORY ORGAN: embolus (E) (actual tubular section) quite long, main section relatively broad and retrolaterally with semicircle course, distal third of E very narrow and with irregularly bifurcated tip having a quite long, light and slen- der retrolatero-distal extension and a tiny, conical prolateral process ( Figs 45A , 66J ); embolus base (EB) completely visible in ventral view, width of EB circle broader than 3/4 the width of T; EB located (almost) centrally at distal part of T; T about as broad as cymbium ( Figs 45A , 66J ); sperm duct double-stacked S-shaped, occupying about 2/3 of T from retrolateral; proximal tegulum lobe not distinguished from remaining section of T but T retrolatero-proximally conically converging with blunt-rounded (but irregularly rounded) ending; cymbium in ventral view distally conically converging, at distalmost section rounded; palpal tibia not distinctly short, just slightly broader than long ( Figs 45A , 66J ) and ventral tibial bump in ventral view very flat and located in central section of prolateral half of palpal tibia; RTA in ventral view moderately narrow, long, with retrolatero-distal to distal direction and with inconspicuous (prolatero-) dorsal serration ( Figs 45A , 66J ), in retrolateral view inconspicuous serration only recognisable at distal section of RTA ( Figs 45B , 70C ). COLOURATION: see genus description for conservative aspects. Carapace dark (red-) brown, proximal sections of lateral margins without broad bands of dense, light scale hairs ( Fig. 59I ). Legs dark brown to red-brown, except for proximalmost articles and tarsi being lighter ( Fig. 59I ). Opisthosoma like noted in genus description under general dorsal colouration, however central transversal band very narrow (even narrower than posterior band) and distinctly even and straight, chevron-like patch in central band missing ( Fig. 59I ).

Female: unknown.

Remarks. Several characters correspond well to C. trochophora Bayer , sp. nov.: semicircle course of embolus (E) retrolateral to embolus base (EB); (almost) round and long EB located (almost) centrally at distal part of tegulum; very narrow distal third of E; irregularly bifurcated tip of E, meaning with a retrolatero-distal extension on E; very flat ventral tibial bump; quite long RTA with (indistinct) serration only at distal 1/4. Despite the fact that the type localities of C. trochophora Bayer , sp. nov. and C. lineata Bayer , sp. nov. are far distant from each other, these similarities probably indicate a close relationship between these two species.

Distribution. Known only from the type locality in East Berbice-Corentyne, Guyana.

Figures

FIGURE 45. Corythalia lineata Bayer, sp. nov., male holotype from East Berbice-Corentyne, Guyana. 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 70. Corythalia spp., photographic images of left palps of male specimens, retrolateral view. Corythalia hadzji: A Lectotype from Upper Demerara-Berbice, Guyana. Corythalia trochophora Bayer, sp. nov.: B Holotype from Tungurahua, Ecuador. Corythalia lineata Bayer, sp. nov.: C Holotype from East Berbice-Corentyne, Guyana. Corythalia hamulifera Bayer, sp. nov.: D Holotype from south-eastern part of Ecuador. Corythalia tribulosa sp. nov.: E Holotype from Putumayo, Colombia. Corythalia valida: F Lectotype from Amazonas, Brazil. Corythalia flagrans sp. nov.: G Holotype from Acre, Brazil. Corythalia fragilis sp. nov.: H Paratype SMNK-ARA 02236 from Amazonas, Brazil. Corythalia grata: I Lectotype from São Paulo, Brazil. Corythalia vervloeti: J Male M-2 from Amazonas, Brazil. Corythalia opima: K Lectotype from eastern part of Guatemala. Corythalia spiralis: L Lectotype from Chiriquí, Panama.