Charinus carinae, 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 : 101-103

Charinus carinae sp. nov.

urn:lsid:zoobank.org:act:188D8800-BFCB-4E25-912D-3BA2106651CE

Figs 3A–B , 4A–B , 43 , 49–51 ; Table 4

Diagnosis

This species may be separated from other Charinus in eastern South America by means of the following combination of characters: large size; cheliceral claw with 13 teeth; pedipalp coxae with seven setae encircled by dorsal rounded carina; secondary series of spines on pedipalp segments present ( Figs 3A– B , 49E ); distitibia of leg IV with sc and sf with six trichobothria.

The presence of seven setae encircled by the dorsal rounded carina of the coxa is otherwise observed only in C. goitaca sp. nov., from which C. carinae sp. nov. differs in the greater number of ventral spines on the pedipalp patella, i.e., six spines in C. carinae sp. nov. compared with three or four spines in C. goitaca sp. nov., and the greater number of cheliceral teeth, i.e., ten in C. carinae sp. nov. compared with thirteen in C. goitaca sp. nov.

Etymology

This species is a patronym honoring Carine C. Gonçalves Galvão for her immeasurable support to the first author during the preparation of this work.

Type material

Holotype BRAZIL • ♂; Rio de Janeiro, Arraial do Cabo, Ilha de Cabo Frio, Trilha do Farol Velho ; [22°52′53.29″ S, 42°00′17.17″ W]; E.H.W. leg.; MNRJ 9293 .

Paratypes BRAZIL • 4 ♂♂; same collection data as for holotype; MNRJ 9199 .

Description

CARAPACE. Frontal process large, subtriangular, not visible in dorsal view ( Fig. 49C ); median eyes and median ocular tubercle present ( Fig. 49A, C ); median ocular tubercle shallow, slightly higher than carapace surface, with pair of small setae ( Fig. 49C ); lateral eyes well developed, pale, small seta posterior to each lateral ocular triad ( Fig. 49A ); lenses directed anteriorly and dorsally.

STERNUM. Tritosternum projected anteriorly into blunt tubercle, surpassing base of pedipalp coxae ( Fig. 49B ); medial platelet (tetrasternum) and third platelet (pentasternum) with single convex platelet, with pair of large setae anteriorly, and several small setae posteriorly; metasternum with five large setae anteriorly at margin between membranous and sclerotized regions, and longitudinal row of several small setae, from anterior to posterior ( Fig. 49B ); four to six setae in posterior area.

OPISTHOSOMA. Ventral sacs and ventral sac cover absent.

GENITALIA. Male gonopod rectangular ( Fig. 50C ); LoL2 fimbriate with long projections ( Fig. 50B, D ); LoL1 acute, with spine-like projections ( Fig. 50E ); LaM long and thin, surpassing lateral lobes ( Fig. 50A–B ); fistula with small globular projection ventrally ( Fig. 50F ). Female unknown.

CHELICERAE. Small tooth in retrolateral row of basal segment; prolateral surface with transverse row of around eight small setae, from ventral to dorsal surface; three setae at dorsodistal margin, prolateral, retromedial and retrolateral, near membranous region of claw; claw with thirteen teeth and row of setae on retrolateral surface from base to near apex (dorsal side).

PEDIPALPS. Coxal rounded carina enclosing two to five small setae, and with four to five setae on anterior margin. Femur with three distinct setiferous tubercles proximal to spine 1 ( Figs 3A–B , 49E ); primary series with five dorsal spines, with smaller spine between spines 3 and 4, and another smaller spine between spines 4 and 5 ( Figs 3A–B , 49E ); five ventral spines, small spine between spines 1 and 2, two small between spines 2 or 3, and small spines between spines 3 and 4, and spines 4 and 5 ( Fig. 49F ); additional spine, situated prolateral to primary series, between spines 1 and 2; large spine proximal to ventral spine 1, with small spine near its base. Pedipalp patella with six dorsal spines ( Figs 4A–B , 49E ); large setiferous tubercle distal to spine I, about one-third length of spine I ( Fig. 4A–B ); six ventral spines; small spine between spines II and III; two to five setiferous tubercles between spine I and distal margin. Tibia with two dorsal spines, proximal spine two-thirds length of distal spine; ventral spine situated in distal half of tibia; three long setae between spine and distal margin. Tarsus with three dorsal spines, two distal spines subequal and one-fifth length of tarsus ( Fig. 49D ); proximal spine smaller, ca one-third length of other two spines, situated closer to large proximal spine and with long setae at its base; ventral row of cleaning brush with 27–29 setae.

LEGS. Tibia of leg I with 23 articles (up to 29 articles on regenerated legs), tarsus I with 41 articles (up to 49 on regenerated legs); tarsal organ situated close to base of claw ( Fig. 51A–B ); rod sensilla with six setae in shallow groove ( Fig. 51C ). 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 .

Distribution

Known only from the type locality ( Fig. 43 ).

Figures

Fig. 3. Charinidae Quintero, 1986, pedipalp femur, prolateral and dorsal views. A–B. Charinus carinae sp. nov. (MNRJ 9293). C–D. Charinus gertschi Goodnight & Goodnight, 1946 (AMCC [LP 10076]). E–F. Sarax bispinosus (Nair, 1934) (AMCC [LP 12298]). G–H. Sarax willeyi Gravely, 1915 (SMF). Scale bars: A–D, G–H = 1 mm; E–F = 0.5 mm.

Fig. 4. Charinidae Quintero, 1986, pedipalp patellar articles, dorsal and prolateral views. A–B. Charinus carinae sp. nov. (MNRJ 9293). C–D. Charinus gertschi Goodnight & Goodnight, 1946 (AMCC [LP 10076]). E–F. Sarax bispinosus (Nair, 1934) (AMCC [LP 12298]). G–H. Sarax willeyi Gravely, 1915 (SMF). Scale bars: A–D, G–H = 1 mm; E–F = 0.5 mm.

Fig. 43. Map plotting known distributions of species of Charinus Simon, 1892 in eastern South America, with inset for southeastern Brazil.

Fig. 49. Charinus carinae sp. nov. (MNRJ 9293), general morphology, ♂. A. Habitus, dorsal view. B. Sternum, ventral view. C. Frontal process. D. Pedipalp tarsus, frontal view. E. Pedipalp, dorsal view. F. Pedipalp, ventral view. Scale bars: A = 5 mm; B, D–F = 1 mm; C = 0.5 mm.

Fig. 50. Charinus carinae sp. nov. (MNRJ 9199), male gonopod. A. Ventral view. B. Posterior view. C. Dorsal view. D. Sinistral side of gonopod. E. Lateral lobe 1. F. Globular projection on dorsal margin of fistula.

Fig. 51. Charinus carinae sp. nov. (MNRJ 9199), antenniform leg I, ♂. A. Apex, ventral view. B. Apex, frontal view. C. Rod sensilla with olfactory setae.