Corythalia verhaaghi, 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 : 45-46

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.6314122

persistent identifier

https://treatment.plazi.org/id/BD7B5694-90EA-4471-9BB3-C7319035A810

taxon LSID

lsid:zoobank.org:act:BD7B5694-90EA-4471-9BB3-C7319035A810

treatment provided by

Plazi

scientific name

Corythalia verhaaghi
status

sp. nov.

Corythalia verhaaghi View in CoL sp. nov.

Figs 22 View FIGURE 22 A–C, 62B, 72F, 76F

urn:lsid:zoobank.org:act:BD7B5694-90EA-4471-9BB3-C7319035A810

Type material. Holotype: ♀, BRAZIL: Ceará: 10 km SW of Barbalha , 7°22’S, 39°22’W, 600 m a.s.l., relict area of Caatinga-forest, dry brook, on tree trunk, M. Verhaagh leg. 23 Jan. 1995, SMNK-ARA 13414 . GoogleMaps

Etymology. The specific name is a patronym in honour of the collector of the holotype, our dear colleague Manfred Verhaagh, who always shows greatest dedication to tropical ecology and entomology.

Diagnosis. Females distinguished from those of all other Corythalia species by the combination of the following characters: anterior margins of epigynal windows (W) not continuous: extended and strongly diverging anterior margins of septum of W ending clearly before meeting the converging anterior sections of lateral margins of W; extremely converging extensions of both lateral margins antero-medially regularly transversely connected ( Figs 22A View FIGURE 22 , 72F View FIGURE 72 ); septum of epigynal windows narrow (about 1/10 the width of W) ( Figs 22A View FIGURE 22 , 72F View FIGURE 72 ). Heads of spermathecae more or less round and almost as large as secondary spermathecae (SS); connective duct between primary spermathecae (PS) and SS very narrow, just slightly curved and shorter than diameter of PS ( Figs 22B View FIGURE 22 , 76F View FIGURE 76 ).

Description. Male: unknown.

Female: total length 4.2, carapace length 2.0, maximal carapace width 1.5, width of eye rectangle 1.3, opisthosoma length 2.2, opisthosoma width 1.7, fovea length 0.14. EYES: AME 0.44, ALE 0.29, PME 0.07, PLE 0.23, AME–AME 0.02, AME–ALE 0.05, PME–PME 1.21, PME–PLE 0.21, ALE–PLE 0.56, PLE–PLE 1.04, clypeus height at AME 0.22, clypeus height at ALE 0.46. Cheliceral furrow with 1 promarginal and 1 retromarginal teeth. SPINATION: palp: no spines. Legs: femur I–III 1500, IV 0500; patella I–II 1000, III–IV 1010; tibia I 2003, II 3003, III–IV 3133; metatarsus I–II 2004, III 3134, IV 4144. MEASUREMENT OF PALP AND LEGS: palp 1.7 [0.6, 0.3, 0.3, 0.5], I 3.1 [1.0, 0.6, 0.7, 0.5, 0.3], II 3.2 [1.1, 0.6, 0.7, 0.5, 0.3], III 3.9 [1.3, 0.6, 0.8, 0.7, 0.5], IV 3.9 [1.2, 0.6, 0.8, 0.8, 0.5]. LEG FORMULA: 4&321 (legs III & IV with exactly the same length). COPULATORY ORGAN: epigyne with more or less oval epigynal windows (W) [however, anterior margin of W uncontinuous, with distinct longitudinal gap as extended, extremely converging lateral margins of W are situated clearly further anterior than strongly diverging extended margins of septum of W (SW)]; anterior margins of both W antero-medially connected; SW narrow ( Figs 22A View FIGURE 22 , 72F View FIGURE 72 ). Epigynal field clearly broader than long ( Figs 22A View FIGURE 22 , 72F View FIGURE 72 ). Vulva with large and round primary spermathecae (PS), touching each other medially ( Figs 22B View FIGURE 22 , 76F View FIGURE 76 ); secondary spermathecae (SS) distinctly small (diameter of SS clearly less than 1/4 the diameter of PS), carrying almost round and only slightly smaller heads of spermathecae laterally to slightly postero-laterally ( Figs 22 View FIGURE 22 B–C, 76F). Copulatory ducts with antero-lateral direction, very light and filmy, thus difficult to recognise in photographic image ( Fig. 76F View FIGURE 76 ). Connective ducts very narrow, from posterior to anterior direction diverging, not long and only slightly curved. Fertilisation ducts distinctly narrow, arising antero-centrally on PS, bent and directed laterally ( Figs 22 View FIGURE 22 B–C, 76F). COLOURATION: see genus description for conservative aspects. Carapace dark red-brown ( Fig. 62B View FIGURE 62 ), light scale hairs quite densely arranged, especially at clypeus (however material examined still quite freshly recorded and in good condition). Legs dark red brown, except for coxae, distal sections of tibiae and metatarsi, patellae III–IV and tarsi II–IV being light brown ( Fig. 62B View FIGURE 62 ). Opisthosoma (unfortunately posteriorly cuticle slightly separated from subcuticle) like noted in genus description under general dorsal colouration, except for chevron-like patch in central band missing ( Fig. 62B View FIGURE 62 ).

Remarks. This species is quite similar to C. argentinensis in general appearance of the epigyne and the vulva: very light and filmy copulatory ducts, comparatively short connective ducts and also very small secondary spermathecae (SS) and lacking SS respectively. All this possibly indicates close relationship between these two species.

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

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Araneae

Family

Salticidae

Genus

Corythalia

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