Charinus susuwa, 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 : 142-144

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.5570720

persistent identifier

https://treatment.plazi.org/id/2DD78A8B-3E54-4616-9425-B62D7B360D8E

taxon LSID

lsid:zoobank.org:act:2DD78A8B-3E54-4616-9425-B62D7B360D8E

treatment provided by

Felipe

scientific name

Charinus susuwa
status

sp. nov.

Charinus susuwa sp. nov.

urn:lsid:zoobank.org:act:2DD78A8B-3E54-4616-9425-B62D7B360D8E

Figs 80 View Fig , 82 View Fig ; Table 5

Diagnosis

This species may be separated from C. madagascariensis and other African species of Charinus by means of the following combination of characters: troglobitic habitus, with pale color, elongated pedipalp spines, and eyes extremely reduced, to eyespots below tegument ( Fig. 82A View Fig ); pedipalp femur with long spine between dorsal spines 1 and 2 ( Fig. 82E View Fig ); pedipalp patella with long ventral spine between spine I and distal margin ( Fig. 82F View Fig ); tarsus with one dorsal spine ( Fig. 82C View Fig ).

The tarsus and tibia of leg I are missing from the holotype.

Etymology

Noun in apposition referring to the type locality, Mt Susuwa.

Type material

Holotype KENYA • ♀; Mt. Susuwa ; [01°10′34.11″ S, 36°20′55.92″ E]; Mar. 1967; A.J. Sutcliffe leg.; in lava, tunnel 3 (dark zone); BMNH. GoogleMaps

Description

CARAPACE. Six anterior setae; frontal process triangular ( Fig. 82D View Fig ). Small granules densely scattered between ocular triads and among sulci. Median eyes reduced to eyespots below tegument; median ocular tubercle absent ( Fig. 82A View Fig ); pair of setae in place of median ocular tubercle; lateral eyes extremely reduced, present only as small yellowish eyespots below tegument.

STERNUM. Tritosternum projected anteriorly with typical setation, long, greatly surpassing base of pedipalp coxae; other sternal platelets narrow and concave, with pair of setae anteriorly on plaque and some smaller setae posteriorly; pentasternum with four setae anteriorly and without seta on membranous region.

OPISTHOSOMA. Ventral sacs and ventral sac cover absent.

GENITALIA. Female genital operculum with posterior margin straight; gonopod sucker-like with wide, rounded apex.

CHELICERAE. Small, flat tooth on retrolateral surface of basal segment, opposite to bifid tooth; retrolateral surface of claw with continous row of setae, basally to medially; claw with five teeth; row of twelve 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 prominent setae encircled by round carina and three setae on margin. Femur with three dorsal spines and three ventral spines ( Fig. 82E–F View Fig ); long spine between dorsal spines 1 and 2; two prominent setiferous tubercles between dorsal spine 1 and proximal margin; long spine between ventral spine 1 and proximal margin. Patella with four dorsal spines in primary series, proximal three spines long, fourth spine shorter ( Fig. 82E View Fig ); prominent setiferous tubercle distal to spine I, one-fourth length of spine I; three ventral spines ( Fig. 82F View Fig ); prominent spine between spine I and distal margin. Tibia with ventral spine distally and two setae between spine and distal margin. Tarsus with long dorsal spine, half length of tarsus ( Fig. 82C View Fig ); cleaning organ with 26 setae in ventral row.

LEGS. Leg IV basitibia IV with four pseudo-articles, with sclerotized, denticulate projection at apex of articles; trichobothrium bt situated submedially on pseudo-article; distitibia trichobothrium bc situated closer to sbf than to bf, sc and sf series each with five trichobothria.

Measurements

See Table 5.

Distribution

Known only from the type locality.

Natural history

This species was collected from a lava tunnel in the ancient volcano Mt Susuwa. The habitat and habitus indicate it is troglobitic. Phrynichus exophthalmus was also recorded from Mt Susuwa ( Weygoldt 1998b).

Key to the identification of the species of Charinus in western Africa

1. Median and lateral eyes reduced ( Fig. 93A View Fig ); cheliceral claw with four teeth; pedipalp femur with five ventral spines ( Fig. 93D View Fig ) ................................................. Charinus milloti Fage, 1939 ( Fig. 93 View Fig )

– Median and lateral eyes unmodified; cheliceral claw with more than four teeth; pedipalp femur with three or four ventral spines ................................................................................................................ 2

2. Cheliceral claw with nine teeth; pedipalp patella with four ventral spines ( Fig. 89C View Fig )........................ ........................................................................................... Charinus fagei Weygoldt, 1972 ( Fig. 89 View Fig )

– Cheliceral claw with fewer than six teeth; pedipalp patella with two or three ventral spines........... 3

3. Pedipalp patella with four dorsal spines and three ventral spines; pedipalp tarsus with three dorsal spines ......................................................................................... Charinus loko sp. nov. ( Figs 90–92 View Fig View Fig View Fig )

– Pedipalp patella with three dorsal spines and two ventral spines; pedipalp tarsus with two dorsal spines ................................................................................................................................................. 4

4. Cheliceral claw with six teeth; genital operculum with median projection......................................... ................................................................................ Charinus africanus Hansen, 1921 ( Figs 84–88 View Fig View Fig View Fig View Fig View Fig )

– Cheliceral claw with four teeth; genital operculum slightly convex but without median projection ............................................................................................ Charinus kakum Harms, 2018

Table 5. Measurements of all East African species of Charinus Simon, 1892.

              Pedipalp             Leg IV      
Species Additional information Source Sex Carapace length Carapace width Femur length Patella length Tibia length Tarsus length Claw length Femur I length Femur Basitibia article I Basitibia article II Basitibia article III Basitibia article IV Distitibia Basitarsus Other tarsal articles
C. madagascariensis MNHN, syntype This work 2.60 3.80 2.03 2.03 0.94 0.69 0.75 5.00 2.97 1.90 0.56 0.48 0.38 1.19 0.56 0.56
C. madagascariensis MNHN, syntype This work 2.80 4.00 2.19 2.18 1.13 0.72 0.83 5.28 3.40 1.50 0.40 0.46 0.56 1.78 0.68 0.66
C. madagascariensis MNHN, syntype This work no gonopod 3.35 4.75 4.75 4.75 1.43 1.10 0.90 8.60 5.00 2.60 0.68 0.88 1.13 2.38 0.95 0.83
C. madagascariensis MNHN, syntype This work no gonopod 3.32 5.00 3.85 3.80 1.38 1.08 0.85 9.20 5.56
C. madagascariensis MNHN, syntype This work no body, legs only                 2.59 0.88 0.94 1.16 2.53 1.06 0.88
C. madagascariensis MNHN, syntype This work 2.90 4.35 2.92 2.88 1.25 0.86 0.81 6.72 4.40 2.09 0.50 0.68 0.83 2.03 0.88 0.75
C. madagascariensis MNHN, syntype This work 3.65 5.44 4.50 4.60 1.66 1.18 0.87 9.49 5.63 2.92 0.83 1.00 1.25 2.75 1.04 0.80
C. madagascariensis MNHN, syntype This work 3.44 4.90 3.80 4.00 1.56 1.00 1.06 7.44 4.90 2.50 0.68 0.70 0.88 2.50 1.00 0.80
C. susuwa sp. nov. BMNH, holotype This work 3.13 4.88 3.92 3.88 1.85 1.20 0.90 11.41 7.36 4.15 1.09 1.38 1.53 4.10 1.88 1.13

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Amblypygi

Family

Charinidae

Genus

Charinus