Charinus euclidesi, Miranda & Giupponi & Prendini & Scharff, 2021

Miranda, Gustavo Silva de, Giupponi, Alessandro P. L., Prendini, Lorenzo & Scharff, Nikolaj, 2021, Systematic revision of the pantropical whip spider family Charinidae Quintero, 1986 (Arachnida, Amblypygi), European Journal of Taxonomy 772, pp. 1-409 : 110-111

publication ID

https://doi.org/10.5852/ejt.2021.772.1505

publication LSID

lsid:zoobank.org:pub:9B82A32F-0A07-47E3-8684-FED7C8EBF1E9

DOI

https://doi.org/10.5281/zenodo.5536798

persistent identifier

https://treatment.plazi.org/id/CFBC1532-31B7-4BAF-B313-28D02A28179E

taxon LSID

lsid:zoobank.org:act:CFBC1532-31B7-4BAF-B313-28D02A28179E

treatment provided by

Felipe

scientific name

Charinus euclidesi
status

sp. nov.

Charinus euclidesi sp. nov.

urn:lsid:zoobank.org:act:CFBC1532-31B7-4BAF-B313-28D02A28179E

Figs 6C–D View Fig , 9A–B View Fig , 43 View Fig , 61–63 View Fig View Fig View Fig ; Table 4 View Table 4

Diagnosis

This species may be separated from other Charinus in eastern South America by means of the following combination of characters: cheliceral claw with nine teeth; males with sexually dimorphic pedipalps ( Fig. 61A–D View Fig ); pedipalp coxae with three long setae on margin, and distinct seta encircled by round carina; pedipalp femur with five dorsal spines and five ventral spines ( Fig. 61A–B View Fig ); pedipalp tibia with distinct setiferous tubercle proximally and ventral spine distally; pedipalp tarsus with three dorsal spines ( Fig. 61C–D View Fig ); leg IV distitibia sc and sf series each with six trichobothria.

This species resembles C. diamantinus sp. nov., but bears more spines on the pedipalp femur and patella.

Etymology

Patronym honoring Euclides da Cunha, one of the foremost Brazilian writers, born in the region in which this species was collected.

Type material

Holotype BRAZIL • ♂; Rio de Janeiro, Cantagalo, Gruta da Pedra Santa, Fazenda da Mineiração Mauá (Euclidelândia); 21°56′16″ S, 42°15′16″ W; 13 Nov. 2005; M.S. Silva and R.L. Ferreira leg.; MNRJ 9099 View Materials . GoogleMaps

Paratypes BRAZIL • 2 ♀♀; same collection data as for holotype; MNRJ 9099 View Materials GoogleMaps .

Description

CARAPACE. Frontal process large, triangular, acute, not visible in dorsal view ( Fig. 61F View Fig ); median eyes large ( Fig. 61F View Fig ); median ocular tubercle shallow, with pair of setae, posterior to eyes; lateral eyes poorly pigmented, but with tapetum ( Fig. 61A View Fig ); small seta posterior to lateral ocular triad.

STERNUM. Tritosternum projected anteriorly into long tubercle ( Fig. 61E View Fig ); median and third platelet rounded, convex, with two setae medially and few small setae posteriorly; metasternum with several small setae anteriorly and three long setae posteriorly.

OPISTHOSOMA. Ventral sacs and ventral sac cover absent.

GENITALIA. Female gonopod sucker-like, with apex of gonopods converging ( Fig. 6C–D View Fig ); posterior margin of genital operculum straight, with few setae along margin and on surface ( Fig. 6C–D View Fig ). Male gonopod with LoL2 long and fimbriate ( Fig. 9A–B View Fig ); LoD projecting posteriorly and acuminate apically ( Fig. 9A–B View Fig ).

CHELICERAE. Small retrolateral tooth on basal segment. Prolateral surface of basal segment with vertical row of seven setae. Claw with nine small teeth; retrolateral surface of claw with row of setae from base to mid-apex.

PEDIPALPS. Coxal dorsal carina with one or two small setae and four or five setae on anterior margin of round carina. Femur with three distinct setiferous tubercles proximal to spine 1 ( Fig. 62A–B View Fig ); primary series with five dorsal spines and small spine between spines 3 and 4 ( Fig. 62A–B View Fig ); five ventral spines and small spine between spines 1 and 2, two small spines between spines 2 and 3, and small spine between spines 3 and 4 and 4 and 5 ( Fig. 62C–D View Fig ); large ventral spine proximal to spine 1 ( Fig. 62C–D View Fig ). Patella with five dorsal spines and small spine between spines 4 and 5 ( Fig. 62A–B View Fig ); large setiferous tubercle distal to spine I, about one-third length of spine I; five ventral spines ( Fig. 62C–D View Fig ). Tibia with two dorsal spines, basal spine two-thirds length of distal spine; ventral spine situated in distal half of tibia, with row of two setiferous tubercles near base of spine; three long setae between spine and distal margin. Tarsus with three dorsal spines, two distal spines subequal and one-fifth length of tarsus; proximal spine smaller, ca one-third length of other two spines, situated near large proximal spine, and with long seta at base ( Fig. 61C–D View Fig ); ventral row of cleaning brush with 27 setae.

LEGS. Tibia of leg I with 23 articles; tarsus I with 41 articles; tarsal organ situated close to base of tarsal claw ( Fig. 63C, E View Fig ); rod sensilla formed by six setae in shallow groove ( Fig. 63A–B View Fig ); slit sensilla situated opposite to tarsal claw ( Fig. 63D View Fig ). Leg IV basitibia with four pseudo-articles; trichobothrium bt situated in proximal third; distal apex of basitibial pseudo-articles with dark, denticulate projection; distitibia trichobothrium bc situated closer to sbf than to bf; sc and sf series each with six trichobothria; distitarsus with distinct white annulus distally on first article.

Measurements

See Table 4 View Table 4 .

Distribution

Known only from the type locality.

Natural history

The known specimens were collected exclusively inside caves.

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Amblypygi

Family

Charinidae

Genus

Charinus