Charinus apiaca, 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 : 96-97

Charinus apiaca sp. nov.

urn:lsid:zoobank.org:act:259DB50B-0398-4321-81FD-60128AB7971D

Figs 5A–B , 43 , 47 ; Table 4

Diagnosis

This species may be separated from other Charinus in eastern South America by means of the following combination of characters: eight setae on anterior carapace margin ( Fig. 47A ); cheliceral claw with 11–14 teeth; female gonopods sucker-like, sclerotized basally, and curved posteriorly ( Fig. 5A–B ).

This species resembles other Charinus from the north of the state of Rio de Janeiro, but can be differentiated by its large size and the presence of an extra series of ventral spines on the pedipalp femur ( Fig. 47F ).

Etymology

Noun in apposition referring to Apiacá, a city near the type locality.

Type material

Holotype BRAZIL • ♀; Espírito Santo, Apiacá, Fazenda Santa Maria ; 21°09′13.68″ S, 41°33′59.04″ W; 12 Aug. 2003; R.L.C. Baptista leg.; lower corridor; MNRJ 9286 .

Paratype BRAZIL • 1 juv.; same locality as for holotype; Jan. 1989; R.L.C. Baptista leg.; under rotten bark; MNRJ 9074 .

Description

CARAPACE. Small granules densely scattered between ocular triads and among sulci. Median eyes well developed ( Fig. 47A, C ); median ocular tubercle weakly developed; pair of setae on median ocular tubercle; lateral eyes well developed, pale, seta posterior to lateral ocular triad; lateral ocular triad well separated from carapace margin; eight anterior setae; frontal process triangular.

STERNUM. Tritosternum projected anteriorly with typical setation, long, surpassing base of pedipalp coxae ( Fig. 47B ); other sternal platelets narrow and concave, with pair of setae anteriorly on plaque and some smaller setae posteriorly; pentasternum with ten setae anteriorly and four setae near membranous region.

OPISTHOSOMA. Ventral sacs and ventral sac cover absent.

GENITALIA. Female genital operculum with short setae posteromedially ( Fig. 5A–B ); gonopod suckerlike, markedly sclerotized basally ( Fig. 5A–B ); constriction present near apex, apex not broad, slightly wider than stem ( Fig. 5A–B ); sucker-like appendages separated from each other ( Fig. 5A–B ). Male unknown.

CHELICERAE. Teeth absent on retrolateral surface of basal segment, opposite to bifid tooth; retrolateral surface of claw with discontinous row of setae, long patch basally and another medially; claw with 11– 14 teeth; two rows of several setae on prolateral surface of basal segment; bifid tooth on basal segment with dorsal cusp larger than ventral cusp.

PEDIPALPS. Coxal dorsal carina with four (dextral) or six (sinistral) prominent setae encircled by round carina and four (dextral) or three (sinistral) setae on margin. Femur with six or seven dorsal spines and six ventral spines ( Fig. 47E–F ); femur with one spine between dorsal spines 2 or 3; three prominent setiferous tubercles between dorsal spine 1 and proximal margin ( Fig. 47E ); spine between ventral spine 1 and proximal margin ( Fig. 47F ); spine ventral to this extra spine; spine between spines 1 and 2 and spines 2 and 3 ( Fig. 47F ). Patella with six dorsal spines in primary series ( Fig. 47E ); prominent setiferous tubercle distal to spine I, one-third length of spine I; five ventral spines ( Fig. 47F ); small setiferous tubercle between spine I and distal margin. Tibia with ventral spine distally and two setae between spine and distal margin. Tarsus with two (dextral) or three (sinistral) dorsal spines, two larger spines subequal, third spine situated near base of proximal spine ( Fig. 47D ); cleaning organ with 28–30 setae in ventral row.

LEGS. Tibia of leg I with 23 articles; tarsus I with 41 articles; first tarsal article shorter than subsequent article. Leg IV basitibia with four pseudo-articles, with sclerotized, denticulate margin at apex of articles; trichobothrium bt situated in proximal third of pseudo-article; distitibia trichobothrium bc situated closer to sbf than to bf, sc and sf series each with six trichobothria.

Measurements

See Table 4 .

Distribution

Known only from the type locality.

Natural history

The holotype was collected inside a cave whereas the paratype was found under rotten tree bark.

Figures

Fig. 5. Charinus Simon, 1892, female gonopods, dorsal (left column) and posterior (right column) views. A–B. Charinus apiaca sp. nov. (MNRJ 9286). C–D. Charinus gertschi Goodnight & Goodnight, 1946 (AMCC [LP 10076]). E–F. Charinus miskito sp. nov. (SMNS). G–H. Charinus mocoa sp. nov. (SMF 68). Scale bars: A–B, F–H = 0.1 mm; C–E, I–L = 0.25 mm.

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

Fig. 47. Charinus apiaca sp. nov. (MNRJ 9286), 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, D–F = 1 mm; B–C = 0.5 mm.