Nimbanahita, Henrard & Jocqué, 2017

NIMBANAHITA View in CoL View at ENA GEN. NOV.

http://zoobank.org/rn:lsid:zoobank.org:act: 14E9A4E4- F1E3-4D3C-AF6E-83A715794399

Type species

Nimbanahita montivaga sp. nov.

Etymology

The generic name is a combination of ‘Nimba’ and ‘ Anahita ’ referring to the type locality of the type species.

Diagnosis

The diagnostic characters of the monospecific genus Nimbanahita are mentioned under the diagnosis of the type species. The gender of the genus is feminine.

Affinities

Nimbanahita shares some characters with Thoriosa : the eye position with AME small and close together, the endites with straight or convex retrolateral margins; the male palps share the short cymbium; females have a similar epigyne in which the LP and LS are only visible as short hooks behind the MS which is wider than long and folded [character 45 (1)]. It appears to be much more closely related to Anahita , which is reflected in both the morphological and the molecular analysis. It shares with Anahita a large MA with groove that accomodates the thin, long curved embolus and the LP of the epigyne behind the MS. Nimbanahita can be distinguished from Anahita by the absence of converging hairs between PME, the absence of a small retroapical spine on the palpal tibia and the presence of an RTA.

Description

Ecribellate ctenids. Medium size, body length (males and females) 7 – 10.5. Carapace ( Fig. 24 A – D View Figure 24 ) piriform, highest point at level of coxae IV, brownish with paler central and lateral bands; dispersed dark setae and pale setae along anterior margins; thoracic groove longitudinal, located in the posterior third of the carapace. Chilum divided. Clypeus with few erect black bristles. Ctenid eye pattern 2 – 4 – 2, with the anterior and posterior row recurved in dorsal view. Eyes round, except oval anterior lateral eyes. Chelicerae yellowish brown, with few hairs; promargin with three teeth, the median higher than the laterals; retromargin with four teeth, basal smallest; intermarginal denticles absent. Endites brown with lighter apical area, external lateral margin almost straight, distally bearing dense apical scopulae and subapical serrula. Labium brown, distally rounded, distal margin with row of bristles. Sternum medium to pale brown, shield-shaped, not extending between coxae IV. Legs brown; scopulae poorly developed, restricted to tarsi; numerous erect spines (at least in alcohol); male legs slightly more elongate and slen- der than female legs. Trochanters notched. Abdomen oval ( Fig. 24A – D View Figure 24 ), with dispersed short setae. Male palp ( Figs 25A, B, 26A, B View Figure 26 ): patella slightly swollen, as long as tibia; tibia short with distal crown of setae and small RTA, originating near distal margin; cymbium short, blunt, base with ventral hairy swelling; subtegulum prolateral; tegulum oval; MA with notch and median projection; embolus slender, cylindrical; locking lobes present; conductor short, straight with rounded distal margin, hyaline. Epigyne ( Figs 25C, 27A, B View Figure 27 ): broad MS, folded; LS situated far backward, behind MS, with LP only visible as short, blunt projections. Vulva ( Fig. 27C, D View Figure 27 ) with spermathecae far apart, almost perfectly globular.

Composition

Monospecific: Nimbanahita montivaga sp. nov.

Distribution

Only known from Mt. Nimba in Guinea.