Corythalia gasnieri, 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: 40-41

publication ID

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

publication LSID

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

persistent identifier

http://treatment.plazi.org/id/3C6B1838-302F-4C40-AA3C-D3FDEABFEACB

taxon LSID

lsid:zoobank.org:act:3C6B1838-302F-4C40-AA3C-D3FDEABFEACB

treatment provided by

Plazi

scientific name

Corythalia gasnieri
status

sp. nov.

Corythalia gasnieri   sp. nov.

Figs 19 View FIGURE 19 A–B, 57I, 65A, 68I

urn:lsid:zoobank.org:act:3C6B1838-302F-4C40-AA3C-D3FDEABFEACB

Type material. Holotype: ♂, BRAZIL: Amazonas : Manaus, Reserva Ducke, ca. 2°55’50”S, 59°58’30”W, non-in- undated primary forest, H. Höfer & T. Gasnier leg. 28 Sep. 1992, in a funnel trap on a tree trunk in approximately 2 m height above ground, field number BE I/1, interim deposition SMNK-ARA 02507, final deposition INPA. GoogleMaps  

Etymology. The specific name is a patronym in honour of the Brazilian project partner, arachnologist and cocollector of the holotype, Thierry Gasnier; noun (name) in genitive case.

Diagnosis. Males distinguished from those of all other Corythalia   species by the following characters in combination: embolus (E) subdistally slightly fusiformly broadened; tip of E prolatero-distally with very small and fine candle-flame-like protrusion ( Figs 19A View FIGURE 19 , 65A View FIGURE 65 ); in retrolateral view E centrally at distal half abruptly converging with distalmost fourth of E having only less than 1/3 the width of the central section ( Figs 19B View FIGURE 19 , 68I View FIGURE 68 ); Tegulum (T) broader than cymbium (even though minimally).

Description. Male: total length 4.5, carapace length 2.0, maximal carapace width 1.4, width of eye rectangle 1.3, opisthosoma length 2.0, opisthosoma width 1.5, fovea length 0.11. EYES: AME 0.42, ALE 0.26, PME 0.05, PLE 0.23, AME–AME 0.03, AME–ALE 0.04, PME–PME 1.12, PME–PLE 0.21, ALE–PLE 0.55, PLE–PLE 0.88, clypeus height at AME 0.18, clypeus height at ALE 0.45. Cheliceral furrow with 1 promarginal and 1 retromarginal teeth. SPINATION: palp: no spines. Legs: femur I–III 1500, IV 1600; patella I–II 1000, III–IV 1010; tibia I–II 2001, III–IV 2123; metatarsus I 2004, II 2014, III–IV 3134. MEASUREMENT OF PALP AND LEGS: palp 1.6 [0.6, 0.2, 0.2, 0.6], I 3.1 [1.0, 0.5, 0.7, 0.5, 0.4], II 3.0 [1.0, 0.5, 0.6, 0.5, 0.4], III 4.1 [1.3, 0.6, 0.8, 0.9, 0.5], IV 4.0 [1.3, 0.5, 0.8, 0.9, 0.5]. LEG FORMULA: 3412. COPULATORY ORGAN: embolus (E) medium-sized, hose-shaped, subdistally slightly fusiformly broadened and tip prolatero-distally with very small and fine candle flame-like protrusion ( Figs 19A View FIGURE 19 , 65A View FIGURE 65 ); E in retrolateral view pre-subdistally abruptly converging, with distal section distinctly narrower ( Figs 19B View FIGURE 19 , 68I View FIGURE 68 ); E arising at centro- to prolatero-proximal section of embolus base (EB); EB circle half as broad as tegulum (T) or slightly more; T compact, minimally broader than cymbium and without

clearly distinguished prolateral tegulum lobe but T rather blunt-rounded conically converging retrolatero-proximally ( Figs 19A View FIGURE 19 , 65A View FIGURE 65 ); sperm duct double-stacked S-shaped, occupying retrolateral 2/3 of T ( Figs 19A View FIGURE 19 , 65A View FIGURE 65 ). Cymbium distally blunt conically converging and distally rounded ( Figs 19A View FIGURE 19 , 65A View FIGURE 65 ). Palpal tibia about as broad as long ( Figs 19 View FIGURE 19 A–B, 65A, 68I) and ventral tibial bump not far reaching ventrally ( Figs 19B View FIGURE 19 , 68I View FIGURE 68 ). RTA quite slim and with dorsal serration ( Figs 19 View FIGURE 19 A–B, 65A, 68I) covering about distal 2/5 of RTA ( Figs 19B View FIGURE 19 , 68I View FIGURE 68 ). COLOURATION: see genus description for conservative aspects. Carapace dark brown to dark red-brown ( Fig. 57G View FIGURE 57 ). Legs dark brown to red-brown, except for some articles being lighter (see genus description) ( Fig. 57G View FIGURE 57 ). Opisthosoma like noted in genus description under general dorsal colouration, but as many hairs are rubbed-off and cuticle has separated from subcuticle it is impossible to make a statement on the existence of a chevron-like patch in central band ( Fig. 57G View FIGURE 57 ).

Female: unknown.

Remarks. It is difficult to predict possible relationships of C. gasnieri   sp. nov. In our opinion there are no Corythalia   species showing very similar characters as far as the male copulatory organ is concerned.

Distribution. Known only from the type locality in Central Amazonia, Brazil.

T

Tavera, Department of Geology and Geophysics

INPA

Instituto Nacional de Pesquisas da Amazonia

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Araneae

Family

Salticidae

Genus

Corythalia