Corythalia tribulosa, 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 : 97-98

publication ID

https://doi.org/ 10.11646/zootaxa.4806.1.1

publication LSID

lsid:zoobank.org:pub:722DB6C9-2C18-48EB-B202-7F2AFF47F49F

DOI

https://doi.org/10.5281/zenodo.6314128

persistent identifier

https://treatment.plazi.org/id/FFC97B40-39C0-437A-8E49-055E930C52D3

taxon LSID

lsid:zoobank.org:act:FFC97B40-39C0-437A-8E49-055E930C52D3

treatment provided by

Plazi

scientific name

Corythalia tribulosa
status

sp. nov.

Corythalia tribulosa View in CoL sp. nov.

Figs 47 View FIGURE 47 A–B, 60B, 67A, 70E

urn:lsid:zoobank.org:act:FFC97B40-39C0-437A-8E49-055E930C52D3

Type material. Holotype: ♂, COLOMBIA: Departamento de Putumayo: El Pepino , about 1000 m a.s.l., 01°03”N, 76°37’50”W, Prof. Dr Norbert Leist leg. 21 Feb. 1973, SMNK-ARA 12954 .

Etymology. The specific name refers to the thorn-like apophyses at the embolus of the male holotype of this species (Latin adjective “tribulosus” meaning “thorny”); adjective.

Diagnosis. Males distinguished from those of all other Corythalia species by the following characters in combination: embolus (E) quite strong, with two conspicuous apophyses centrally ( Figs 47A View FIGURE 47 , 67A View FIGURE 67 ) which are crossing in retrolateral view ( Figs 47B View FIGURE 47 , 70E View FIGURE 70 ) and distally with retrolatero-distal, relatively long and very narrow extension with tip having (disto-) retrolateral orientation ( Figs 47 View FIGURE 47 A–B, 67A) and prolatero-distally with stout, conical and very small process; distal margin of base of E (EB) in ventral view almost reaching distal margin of tegulum (T) (gap <width of RTA in ventral view) ( Figs 47A View FIGURE 47 , 67A View FIGURE 67 ); RTA medium-sized (shorter than width of T), without dorsal serration and with tip distinctly bent ventrally ( Fig. 47B View FIGURE 47 ).

Description. Male: total length 5.6, carapace length 2.5, maximal carapace width 1.9, width of eye rectangle 1.7, opisthosoma length 2.6, opisthosoma width 1.5, fovea length 0.28. EYES: AME 0.58, ALE 0.36, PME 0.08, PLE 0.33, AME–AME 0.03, AME–ALE 0.03, PME–PME 1.46, PME–PLE 0.22, ALE–PLE 0.61, PLE–PLE 1.19, clypeus height at AME 0.29, clypeus height at ALE 0.62. Cheliceral furrow with 2 (one of them slightly smaller, both located directly next to each other) promarginal and 1 retromarginal teeth. SPINATION: palp without spines. Legs: femur I 1500, II 1500 {1600}, III 1500, IV 1600; patella I 1000, II–IV 1010; tibia I 1003 {2004}, II 3013, III–IV 3133; metatarsus I 2014, II 2024, III 3134, IV 4143{4144}. MEASUREMENT OF PALP AND LEGS: palp 2.0 [0.8, 0.3, 0.2, 0.7], I 4.4 [1.5, 0.7, 0.9, 0.8, 0.5], II 4.6 [1.5, 0.7, 1.0, 0.9, 0.5], III 5.9 [1.9, 0.8, 1.3, 1.3, 0.6], IV 6.0 [1.8, 0.8, 1.3, 1.5, 0.6]. LEG FORMULA: 4321. COPULATORY ORGAN: embolus (E) (actual tubular section) moderately long [slightly shorter than width of tegulum (T)], quite broad [centrally (even without apophyses) slightly broader than RTA in ventral view], retrolatero-distally with quite long, light and very narrow extension with tip having (disto-) retrolateral orientation ( Figs 47A View FIGURE 47 , 67A View FIGURE 67 ) and prolatero-distally with stout, conical and very small process, centrally with thorn-shaped apophysis prolaterally and quite prominent and pointed apophysis retrolaterally ( Figs 47A View FIGURE 47 , 67A View FIGURE 67 ); width of embolus base (EB) circle> 1/2, but <2/3 the width of T; EB located centrally to prolatero-centrally at distal part of T; T narrower than cymbium ( Figs 47A View FIGURE 47 , 67A View FIGURE 67 ); sperm duct double-stacked S-shaped, occupying more than 2/3 of T from retrolateral; proximal tegulum lobe not recognisable as such, but T proximally moderately converging and proximal ending (very) broad rounded; cymbium in ventral view distally conically converging, at distalmost section rounded; palpal tibia short, broader than long ( Figs 47 View FIGURE 47 A–B, 67A, 70E) and ventral tibial bump in ventral view broad, distally almost truncated, located in proximal section of prolateral half of palpal tibia and having prolatero-distal orientation; RTA in ventral view quite narrow, medium-sized, with almost distal direction and without dorsal serration ( Figs 47A View FIGURE 47 , 67A View FIGURE 67 ), in retrolateral view RTA distally converging and with tip clearly bent ventrally ( Figs 47B View FIGURE 47 , 70E View FIGURE 70 ). COLOURATION: see genus description for conservative aspects. Carapace red-brown, proximal sections of lateral margins without broad bands of dense, light scale hairs ( Fig. 60B View FIGURE 60 ). Legs brown to red-brown, except for proximalmost articles, patellae and tarsi being lighter ( Fig. 60B View FIGURE 60 ). Opisthosoma like noted in genus description under general dorsal colouration, however central transversal band very narrow (just as narrow as posterior band) and quite even and straight, chevron-like patch in central band missing; posterior band distinctly separated medially ( Fig. 60B View FIGURE 60 ).

Female: unknown.

Remarks. Among the currently known Corythalia species, C. valida , without any doubt, is most similar to C. tribulosa sp. nov. Several crucial structures of the palp are very similar: embolus (E) quite broad and strong, centrally with apophyses (three in C. valida , two in C. tribulosa sp. nov.); similar distal section of E; tegulum without distinguished proximal lobe, but broad rounded proximally; slender RTA with (at least slight) bending ventrally. Consequently, we expect a close relationship between these two species.

Distribution. Currently known only from the type locality in Putumayo, Colombia.

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Araneae

Family

Salticidae

Genus

Corythalia

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