Corythalia antepagmenti, 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 : 29-31

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/F072C066-BEBB-4813-8679-580B6D5ED3E3
taxon LSID	lsid:zoobank.org:act:F072C066-BEBB-4813-8679-580B6D5ED3E3
treatment provided by	Plazi
scientific name	Corythalia antepagmenti
status	sp. nov.

Treatment

Corythalia antepagmenti View in CoL sp. nov.

Figs 14 View FIGURE 14 A–F, 57D, 61G, 64G, 68D, 72A–B, 76A–B urn:lsid:zoobank.org:act:F072C066-BEBB-4813-8679-580B6D5ED3E3

Type material. Holotype: ♀, BRAZIL: Acre: Xapuri: Com. de Pimenteira , 10°36’00”S, 68°30’00”W, about 150 m a.s.l., secondary forest, A.D. Brescovit, A.B. Bonaldo, H. Höfer & H. Metzner leg. 06 Apr. 1996, interim deposition SMNK-ARA 02853 , final deposition IBSP 209864 View Materials GoogleMaps . Paratypes: 1 ♂, 2 ♀ with the same data as for holotype GoogleMaps : ♂ (bad condition; IBSP 209865 View Materials ) , 2 ♀ (one in bad condition SMNK-ARA 13420 ; the second in very bad condition—only pieces SMNK-ARA 13419 ) .

Additional (doubtful) material examined. BRAZIL: Acre: Xapuri: Com. de Pimenteira , 10°36’00”S, 68°30’00”W, about 250 m a.s.l., secondary forest: 1 s.a. ♂, 2 juveniles, all in very bad condition, A.D. Brescovit, A.B. Bonaldo, H. Höfer & H. Metzner leg. 06 Apr. 1996, SMNK-ARA 13421 GoogleMaps .

Etymology. The specific name refers to the marginal area of the epigynal windows of the female holotype resembling a spectacle frame (Latin “antepagmenti” means “of the frame/of the framework”); noun in genitive case.

Diagnosis. Males distinguished from those of all other Corythalia species by the combination of the following characters: RTA in retrolateral view with distinct bend in central section, distal part directed ventrally (in almost 90° bend) ( Figs 14B View FIGURE 14 , 68D View FIGURE 68 ); spermduct very broad and large (occupying large part of tegulum; except for the prolateral fourth); embolus (E) distally pointed and embolus base (EB) without prolateral extension. Width of EB circle clearly less than half as the width of tegulum ( Figs 14A View FIGURE 14 , 64G View FIGURE 64 ). Females distinguished from those of all other Corythalia species by the combination of the following characters: epigynal windows (W) approximately round (or broader than long, meaning minimally transversal oval); distance between posterior margin of W and epigastric furrow less than one diameter of W, but more than 1/2 ( Figs 14C View FIGURE 14 , 72 View FIGURE 72 A–B); septum of W continuous. Spermathecal heads located latero-ventrally on secondary spermathecae (SS), thus only visible in frontal view ( Fig. 14E View FIGURE 14 ). Arising point of fertilisation duct (FD) medially but shifted far posteriorly [very close to the meeting point of connective duct (DST) with primary spermatheca (PS)] ( Figs 14D View FIGURE 14 , 76 View FIGURE 76 A–B).

Description. Male: total length 4.8, carapace length 2.4, maximal carapace width 1.7, width of eye rectangle 1.5, opisthosoma length 1.8, opisthosoma width 1.3, fovea length 0.16. EYES: AME 0.49, ALE 0.29, PME 0.07, PLE 0.25, AME–AME 0.03, AME–ALE 0.04, PME–PME 1.27, PME–PLE 0.18, ALE–PLE 0.60, PLE–PLE 1.03, clypeus height at AME 0.24, clypeus height at ALE 0.51. Cheliceral furrow with 1 promarginal and 1 retromarginal teeth. SPINATION: palp: no spines. Legs: femur I–II 1500, III–IV -; patella I 1000, II–IV -; tibia I–II 2005, III–IV 3133; metatarsus I -, II 2014, III -, IV 3144. MEASUREMENT OF PALP AND LEGS: palp - [-, 0.3, 0.2, 0.7], I - [1.3, 0.7, 0.8, -, -], II - [1.3, -, 0.8, 0.6, 0.5], III - [-, -, 0.8, -, -], IV -. LEG FORMULA: -. COPULATORY OR- GAN: embolus quite short, moderately narrow, with small and flat but pointed apophysis retrolatero-centrally, tip of embolus pointed, arising point at proximo-central section of embolus base ( Fig. 14A View FIGURE 14 , 64G View FIGURE 64 ); embolus base slightly more than 1/3 the width of tegulum. Tegulum as broad as cymbium, sperm duct double-stacked S-shaped, very broad, occupying largest part of tegulum (except of the prolateral 1/5 to 1/4); proximal tegulum lobe (PTL) broad and approximately rounded proximally and with prolateral bump ( Figs 14A View FIGURE 14 , 64G View FIGURE 64 ). Cymbium in ventral view ( Figs 14A View FIGURE 14 , 64G View FIGURE 64 ) distally conically converging and at distalmost section rounded to egg-tip-shaped. Palpal tibia very short, clearly broader than long ( Figs 14 View FIGURE 14 A–B, 64G), ventral tibial bump absent. RTA relatively broad and long, distinctly bent ventrally and without serration ( Figs 14 View FIGURE 14 A–B, 64G, 68D). COLOURATION (male paratype in bad condition, thus aspects listed here have to be read “with care”; as this species, however, is similar to C. drepane sp. nov., C. ricti Bayer , sp. nov., C. conferta sp. nov. and others, it is likely that its colouration corresponds to these mentioned species): see genus description for conservative aspects. Carapace dark red-brown ( Fig. 57D View FIGURE 57 ). Legs dark red-brown, except for some articles being lighter (see genus description) ( Fig. 57D View FIGURE 57 ). Opisthosoma like noted in genus description under general dorsal colouration, except for chevron-like patch in central band missing and not recognisable, respectively ( Fig. 57D View FIGURE 57 ).

Female (measurements of holotype first, those of paralectotypes as range in parentheses): total length 5.2 (5.2–5.6), carapace length 2.5 (2.5–2.6), maximal carapace width 1.9, width of eye rectangle 1.6 (1.6–1.7), opisthosoma length 2.1 (2.1–3.1), opisthosoma width 1.5 (1.1–1.5), fovea length 0.14 (0.13–0.14). EYES: AME 0.53 (0.51–0.54), ALE 0.32 (0.28–0.32), PME 0.09 (0.08–0.09), PLE 0.27 (0.26–0.27), AME–AME 0.02, AME–ALE 0.05 (0.04–0.05), PME–PME 1.49 (-), PME–PLE 0.24 (0.18–0.24), ALE–PLE 0.68 (0.57–0.68), PLE–PLE 1.22 (1.15–1.22), clypeus height at AME 0.27 (0.22–0.27), clypeus height at ALE 0.62 (0.54–0.62). Cheliceral furrow with 1 promarginal and 1 retromarginal teeth. SPINATION: palp: no spines. Legs: femur I 1400 (1400, 1500), II–III 1500, IV 0500; patella I–II 1000, III–IV 1010; tibia I 2003 (2003, 3003), II 3004 (3003), III–IV 3133; metatarsus I 2004 (2014), II 2014 (2024), III 3134, IV 3144. MEASUREMENT OF PALP AND LEGS: palp 2.1 (2.1–2.3) [0.7 (0.7–0.8), 0.4, 0.4, 0.6 (0.6–0.7)], I 4.1 (3.8–4.1) [1.3 (1.2–1.3), 0.7, 0.9 (0.8–0.9), 0.7 (0.6–0.7), 0.5 (0.4–0.5)], II 4.2 (4.0–4.2) [1.3, 0.7 (0.7–0.8), 0.8 (0.8–0.9), 0.7, 0.5], III 5.1 (4.4–5.1) [1.7 (1.4–1.7), 0.8 (0.7–0.8), 1.1 (0.9– 1.1), 1.0 (0.9–1.0), 0.5 (0.5–0.6)], IV 5.3 (4.7–5.3) [1.7 (1.5–1.7), 0.8 (0.7–0.8), 1.1 (1.0–1.1), 1.1 (1.0–1.1), 0.6 (0.5–0.6)]. LEG FORMULA: 4321 (-). COPULATORY ORGAN: epigyne with approximately round W (or minimally broader than long); septum of W relatively narrow ( Figs 14C View FIGURE 14 , 72 View FIGURE 72 A–B) and continuous. Epigynal field clearly broader than long; structures of vulva visible through epigynal cuticle ( Figs 14C View FIGURE 14 , 72 View FIGURE 72 A–B); primary spermathecae (PS) filling almost entire W. Vulva with large, slightly diagonal oval PS ( Figs 14D View FIGURE 14 , 76 View FIGURE 76 A–B); secondary spermathecae (SS) approximately round (see frontal view, Fig. 14E View FIGURE 14 ) with heads of spermathecae located latero-ventrally ( Fig. 14 View FIGURE 14 E–F). Connective ducts between both spermathecae (DST) narrow, quite short and medially longitudinally in contact with each other, distal section minimally broader than proximal section, meeting PS medially ( Figs 14D, 14F View FIGURE 14 , 76 View FIGURE 76 A–B). Copulatory duct very short and neither in dorsal nor in frontal view clearly recognisable, with anterior direction ( Fig. 14F View FIGURE 14 ). Fertilisation ducts (FD) narrow arising medially on primary spermathecae, but shifted far posteriorly [very close to the meeting point of connective duct (DST) with primary spermatheca (PS)]; FD bent and directed laterally to postero-laterally ( Figs 14 View FIGURE 14 D–F). COLOURATION (female holotype not in very good condition, but basic colouration more or less recognisable): see genus description for conservative aspects. Carapace dark redbrown ( Fig. 61G View FIGURE 61 ). Legs brown to red-brown, except for some articles being lighter (see genus description) ( Fig. 61G View FIGURE 61 ). Opisthosoma like noted in genus description under general dorsal colouration, except for chevron-like patch in central band missing (at least not recognisable as opisthosoma shrunken and at this section with deep fold) ( Fig. 61G View FIGURE 61 ).

Intraspecific variation of female copulatory organs. Female holotype with approximately round epigynal windows (W) and relatively dark and well developed epigynal field ( EF) ( Figs 14C View FIGURE 14 , 72B View FIGURE 72 ) whereas in paratype SMNK-ARA 13420 W slightly broader than long ( Fig. 72A View FIGURE 72 ) and thus even more resembling a glasses (spectacle) frame, and EF not as conspicuous as in holotype. Secondary spermathecae in holotype ( Figs 14D View FIGURE 14 , 76A View FIGURE 76 ) reaching slightly further anteriorly than in paratype 13420 ( Fig. 76B View FIGURE 76 ). Additionally, primary spermathecae ( PS) slightly more elongated in holotype ( Figs 14D View FIGURE 14 , 76A View FIGURE 76 ) than in paratype 13420 ( Fig. 76B View FIGURE 76 ), having PS almost as long as broad .

Remarks. The present new species is quite similar to C. ricti Bayer , sp. nov., C. drepane sp. nov., C. insularis and C. conferta sp. nov. as far as the males are concerned. All share a similar embolus, embolus base (apart from prolateral extension being only present in C. ricti Bayer , sp. nov.), sperm duct course and general shape of tegulum with PTL distinct and (at least sometimes) with prolateral lobe. A close relationship between these species seems likely. As far as the females are concerned C. antepagmenti sp. nov. is similar to C. conferta sp. nov. and C. concinna sp. nov. From the latter species the male is unknown which impedes a statement on relationship.

Distribution. Known only from the type locality in Acre, Brazil.