Corythalia grata ( Peckham & Peckham, 1901 )

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 : 106-107

publication ID	https://doi.org/ 10.11646/zootaxa.4806.1.1
publication LSID	lsid:zoobank.org:pub:722DB6C9-2C18-48EB-B202-7F2AFF47F49F
persistent identifier	https://treatment.plazi.org/id/03D88781-FFFC-C13E-66AB-FB90658F4E88
treatment provided by	Plazi
scientific name	Corythalia grata ( Peckham & Peckham, 1901 )
status

Treatment

Corythalia grata ( Peckham & Peckham, 1901) View in CoL

Figs 51 View FIGURE 51 A–C, 60F, 67D, 70I

Dynamius gratus Peckham & Peckham 1901: 342 , pl. 25, fig. 8, pl. 26, fig. 10 (description & illustration of ♂). Lectotype ♂ (here designated) from Brazil: San Paolo, today: São Paulo; G.W. & E.G. Peckham Coll., No. 664. (obtained from Coll. Moenkhaus), MCZ 21497; 1 ♂ & 1 juvenile paralectotypes (here designated) with exactly the same data as for lectotype, MCZ 21497; all type material examined.

Corythalia grata View in CoL — Simon 1901: 654 (transfer from Dynamius to Corythalia View in CoL ).

Diagnosis. Males distinguished from those of all other Corythalia species by the following characters in combination: embolus (E) long (with almost 3/4 windings around embolus base and about 1.5x longer than width of tegulum) ( Figs 51 View FIGURE 51 A–C, 67D); base of E with longitudinal division (ridge) ( Figs 51A, 51C View FIGURE 51 67D View FIGURE 67 ) and in retrolateral view distinctly protruding from tegulum (T) ( Figs 51B View FIGURE 51 , 70I View FIGURE 70 ); Proximal section of T (proximal fourth) very narrow in comparison with broadest section of T (less than 2/3 the width of broadest section) ( Figs 51A, 51C View FIGURE 51 , 67D View FIGURE 67 ).

Description. Male (measurements of lectotype first, those of paralectotype in parentheses): total length 5.5 (4.6), carapace length 2.7 (2.3), maximal carapace width 2.0 (1.7), width of eye rectangle 1.6 (1.4), opisthosoma length 2.4 (1.9), opisthosoma width 1.9 (1.5), fovea length 0.195 (0.13). EYES: AME 0.51 (0.44), ALE 0.29 (0.26), PME 0.075 (0.065), PLE 0.27 (0.24), AME–AME 0.06, AME–ALE 0.09 (0.06), PME–PME 1.38 (1.24), PME–PLE 0.29 (0.24), ALE–PLE 0.66 (0.59), PLE–PLE 1.17 (1.03), clypeus height at AME 0.30 (0.20), clypeus height at ALE 0.57 (0.47). Cheliceral furrow with 1 promarginal and 1 retromarginal teeth. SPINATION: palp: no spines. Legs: femur I 1500, II–III 1600 (1500), IV 0600 (1600{0600}); patella I–II 1000, III 1000 (1010), IV 1000 (1010); tibia I 2005 (2004), II 3004 (3002), III 3133 (3133{2133}), IV 3133; metatarsus I 2024 (2004), II 2024 (2014), III 3134, IV 5144{4144} (4144). MEASUREMENT OF PALP AND LEGS: palp 2.2 (1.9) [0.9 (0.7), 0.3, 0.3 (0.2), 0.7], I 5.1 (4.0) [1.6 (1.3), 0.9 (0.6), 1.1 (0.9), 0.9 (0.7), 0.6 (0.5)], II 5.4 (4.4) [1.6 (1.4), 0.9 (0.7), 1.2 (1.0), 1.0 (0.8), 0.6 (0.5)], III 6.0 (4.9) [2.0 (1.5), 0.9 (0.7), 1.2 (1.1), 1.2 (1.0), 0.7 (0.6)], IV 5.8 (4.9) [1.8 (1.5), 0.8 (0.7), 1.2 (1.0), 1.3 (1.1), 0.7 (0.6)]. LEG FORMULA: 3421 (3&421; in paralectotype legs III & IV with exactly the same length). COPULATORY ORGAN: embolus (E) long [about 1.5x longer than width of tegulum (T)], in proximal half moderately broad, in distal half not broad, in distal fourth even slender (almost filiform) and with prolaterodistal direction ( Figs 51A, 51C View FIGURE 51 67D View FIGURE 67 ), arising point at prolateral section of embolus base (EB); EB longitudinally divided in basal and prolatero-distal part; width of EB circle> 2/3, but <3/4 the width of T; retrolateral margin of EB sometimes not covered by E ( Fig. 51C View FIGURE 51 ), EB> than 1/2 the width of T, but <2/3; EB located prolaterally at distal part of T; T (clearly) narrower than cymbium ( Figs 51A, 51C View FIGURE 51 67D View FIGURE 67 ); sperm duct double-stacked S-shaped, occupying more than 1/2 but clearly less than 2/3 of T from retrolateral; proximal tegulum lobe very narrow and covering only retrolateral half of palpal tibia and somewhat more than distal half of palpal tibia; cymbium in ventral view distally conically converging, at distalmost section rounded; palpal tibia not distinctly short, minimally longer than broad ( Figs 51 View FIGURE 51 A–C, 67D, 70I); ventral tibial bump in ventral view extremely small and inconspicuous, even in prolateral view hardly recognisable (not illustrated); RTA in ventral view medium-sized (shorter than width of tegulum, broad- er than embolus, even at proximal section), with retrolatero-distal direction and with inconspicuous dorsal serration ( Figs 51A, 51C View FIGURE 51 67D View FIGURE 67 ), in retrolateral view dorsal serration also inconspicuous and only present in distal third of RTA ( Figs 51B View FIGURE 51 , 70I View FIGURE 70 ). COLOURATION: see genus description for conservative aspects. Carapace red-brown ( Fig. 60F View FIGURE 60 ). Legs red-brown, except for several articles being lighter (see genus description) ( Fig. 60F View FIGURE 60 ). Opisthosoma like noted in genus description under general dorsal colouration, however all transversal bands moderately broad (posterior one narrow) and chevron-like patch in central band missing ( Fig. 60F View FIGURE 60 ).

Female: unknown.

Intraspecific variation of male copulatory organs. In lectotype ( Figs 51A View FIGURE 51 , 67D View FIGURE 67 ) embolus in distal half somewhat broader than in paralectotype ( Fig. 51C View FIGURE 51 ). Retrolateral division of embolus base in lectotype broader than in paralectotype. Additionally, tegulum in distal half in lectotype with fine transversal ridge ( Figs 51A View FIGURE 51 , 67D View FIGURE 67 ).

Distribution. Known only from an unspecified locality in the state of São Paulo, Brazil.