Corythalia hadzji Caporiacco 1947
Creators: name: Bayer, Steffen
name: Höfer, Hubert
name: Metzner, Heiko
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Araneae
Salticidae
Corythalia
Corythalia hadzji

description: Corythalia hadzji Caporiacco, 1947   
Figs 43 A–B, 59G, 66H, 70A  
 Corythalia hadzji Caporiacco 1947: 33 (description of ♂). Lectotype ♂ (designated by Ruiz & Brescovit 2008) from Guyana: Upper Demerara-Berbice: Kurukukari, Cumins Lodge (?); Campo VI (?)], ca. 04°40’N, 58°39’W, about 80 m a.s.l., Prof. Dr Beccari leg. Nov.–Dec. 1931, MZUF 587. Paralectotypes: 2 ♂, one of which with the same data as for lectotype, the other from Guyana: Potaro-Siparuni: at Konawaruk river (Conwarook), ca. 05°16’N, 59°00’W, about 70 m a.s.l., Prof. Dr Romiti leg. 18 May 1936; all type material examined; Caporiacco 1948: 721, figs 154–155 (description & illustration of ♂); Ruiz & Brescovit 2008: 491, figs 20–21 (description & illustration of ♂).   
 Corythalia hadzii— Roewer 1954b: 1102 (emendation, unjustified).   
 Diagnosis. Males distinguished from those of all other Corythalia species by the following characters in combination: embolus (E) (actual tubular section) quite short [shorter than width of tegulum (T)] and in ventral view proximally more than 2x but less than 2.5x broader than centrally; E distally irregularly bifurcated, with long, light, minimally curved and slender retrolateral extension and short, conical prolateral process (Figs 43A, 66H); ventral tibial bump (VTB) very large and with prolateral orientation; RTA with distinct dorsal serration but only at distal 1/4 (Figs 43 A–B, 66H, 70A).   
 Description. Male (measurements of lectotype first, those of paralectotype from Konawaruk river, which is very similar, in parentheses, if taken at all; other paralectotype male even more similar, thus measurements not taken): total length 5.1 (4.7), carapace length 2.3 (2.3), maximal carapace width 1.7 (1.8), width of eye rectangle 1.5 (1.5), opisthosoma length 2.4 (2.3), opisthosoma width 1.5 (1.4), fovea length 0.19. EYES: AME 0.50, ALE 0.31, PME 0.07, PLE 0.29, AME–AME 0.03, AME–ALE 0.04, PME–PME 1.28, PME–PLE 0.24, ALE–PLE 0.65, PLE–PLE 1.14, clypeus height at AME 0.13, clypeus height at ALE 0.49. Cheliceral furrow with 1 promarginal and 1 retromarginal teeth. SPINATION (spination patterns of the lectotype first, those of paralectotypes in parentheses, if differing): palp without spines. Legs: femur I 1500, II–IV 1600; patella I 1000, II–IV 1010; tibia I 3003 (3003, 3013), II 3024 (3124, 3124), III 3123 (3123), IV 3133 (3133); metatarsus I 2024 (2024), II 2125 (3134{3124}, 2124), III 3134 (3134), IV 4134 (4044). MEASUREMENT OF PALP AND LEGS: palp 1.9 [0.7, 0.3, 0.2, 0.7], I 4.2 [1.3, 0.6, 1.0, 0.8, 0.5], II 4.3 [1.4, 0.6, 0.9, 0.9, 0.5], III 5.6 [1.8, 0.8, 1.2, 1.3, 0.5], IV 5.8 [1.8, 0.7, 1.3, 1.4, 0.6]. LEG FORMULA: 4321. COPULATORY ORGAN: embolus (E) rather short [shorter than width of tegulum (T)], and in ventral view proximally more than 2x broader than centrally (Figs 43A, 66H); E distally irregularly bifurcated, with long, light and slender retrolateral extension and short, conical prolateral process; width of embolus base (EB) circle almost as broad as 2/3 the width of T; T slightly narrower than cymbium (Figs 43A, 66H); sperm duct double-stacked S-shaped, occupying about 3/4 of T from retrolateral, central loop very narrow; proximal tegulum lobe distinguished from remaining section of T and quite narrow; cymbium in ventral view distally conically converging, at distalmost section slightly truncated (Fig. 43A), in retrolateral view also slightly truncated due to a flat, rounded “corner” retrolatero-distally; palpal tibia short, broader than long (Figs 43 A–B, 66H, 70A) and ventral tibial bump in ventral view large, broad rounded, extending beyond prolateral margin of palpal tibia and located in prolateral half of distal 2/3 of palpal tibia; RTA in ventral view relatively narrow, medium-sized, with retrolaterodistal direction and with distinct dorsal serration but only at distal 1/4 (Figs 43A, 66H), in retrolateral view distinct dorsal serration of RTA recognisable only at tip (Figs 43B, 70A). COLOURATION: see genus description for conservative aspects. Carapace dark (red-) brown (Fig. 59G). Legs dark brown to red-brown, except for tarsi I–IV being lighter yellowish brown to beige (Fig. 59G). Opisthosoma like noted in genus description under general dorsal colouration, however central and anterior transversal bands inconspicuous, chevron-like patch in central band missing (Fig. 59G).   
 Female: unknown.   
 Remarks. An additional male type (paralectotype) from the same locality/collection event as listed for the lectotype exists and was originally in the same vial together with the lectotype (MZUF 587). In vial MZUF 588 (Conwarook, Romiti leg.) there should actually be only one male according to the original publication (Caporiacco 1947). However, at arrival at SMNK (Apr. 2018), two males were found in MZUF 588 that were still labeled as “ Syntypi ”. The paralectotype male that originated from vial MZUF 587 must have been transferred to the vial MZUF 588 without any remark/labelling. Hence, it remains unclear which paralectotype male came from which of the two localities mentioned above.   
 Corythalia hadzji is similar to C. ursina in having a quite short embolus (E) continuously converging from proximal to distal section, an embolus base located more or less centrally at distal section of tegulum, a similar RTA with dorsal serration only at distal 1/4 and a similar flat, rounded “corner” retrolatero-distally at cymbium. Accordingly, C. ursina might be closely related to C. hadzji. However, the reliability of this prediction depends strongly on the reliability of the illustrations of the male plap of C. ursina in Galiano (1962). The holotype of C. ursina was not available for the present study and the illustration in Mello-Leitão (1940) is not very helpful as it is very small and only shows retrolateral perspective. Assumed, Galiano (1962) had not forgotten (overseen) or misinterpreted any important details and the proportions were exact our prediction might come close to reality.   
 Distribution. Known only from Guyana.
description: Published as part of 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), pp. 1-144 in Zootaxa 4806 (1) on pages 90-92, DOI: 10.11646/zootaxa.4806.1.1, http://zenodo.org/record/3927380