Bioacoustics of Camafroneta oku

Description Holotype ( holotype , ZMUC 00046889) SIZE . Total length 2.98. Cephalothorax 1.44 long, 0.98 wide. Sternum 0.85 long (0.76 without labium), 0.65 wide. Abdomen 1.70 long, 0.96 wide. AME diameter 0.04. Femur I 1.31 long, 0.91 times as long as cephalothorax. COLOUR (preserved specimen, Fig. 3B, E–F ). Cephalothorax and chelicerae yellowish brown mottled with grey. Legs and pedipalps yellowish white, without annulations. Black rings around eyes. Abdomen light grey, with white markings. BODY. Sternum shield–shaped with labium fused to sternum and long narrow extension of sternum between coxae IV (merged to carapace at the end) ( Fig. 3C, G ). Cephalothorax without setae. Fovea present, elongated, faint and shallow. Ocular area with several short thin setae between eyes. Clypeus height 5.5 times AME diameter. Subocular sulci present below ALE, long and wide, not clearly demarcated ( Fig. 3B , lines). CHELICERAE. With 3 large widely spaced prolateral teeth (middle tooth largest) ( Fig. 3B ). With faint stridulating ridges. Three small closely spaced retrolateral denticles, positioned between the two first prolateral teeth. LEGS. All femora with one short stout setae dorsally. Leg formula 1243 (legs 1, 2 of 4 almost same length). Tibial spinal formula 2222. Metatarsus I with 3 dorsal trichobothria. PEDIPALP ( Figs 1A–B , 2A–D ). Patella with long strong distal dorsal spine ( Figs 1A, D , 2A ). Tibia with two retrolateral and one prolateral trichobothrium ( Fig. 1A ). Cymbium with one distal ventral and three prolateral macrosetae. Paracymbium U-shaped, with large broad base and two basal hairs ( Figs 1A , 2A ). Protegulum elongated, triangular ( Figs 1A , 2A ). Suprategulum finger-like pointing retrolaterally. Radix drop-shaped with a tiny, in the light microscope almost invisible thorn on its retrolateral side ( Fig. 1B ). It resembles the radix retrolateral appendix described by Frick & Scharff (2014) for Metamynoglenes Blest, 1979 , but it is much smaller in Camafroneta gen. nov. Embolus long and thin embedded in the embolic membrane ( Figs 1B , 2B–C ). Embolic membrane moderately sclerotised and enlarged (compared to other African mynoglenines), exceeding the alveolus. Distal half peculiarly shaped with folds and seemingly fleshy sections. Female (allotype, ZMUC00046889) SIZE. Total length 3.22. Cephalothorax 1.43 long, 0.99 wide. Sternum 0.91 long (0.84 without labium), 0.66 wide, shield–shaped. Abdomen 1.69 long, 1.17 wide. AME diameter 0.04. Femur I 1.20 long, 1.19 times as long as cephalothorax. COLOUR (preserved specimen). As holotype , but abdomen darker, greyish black ( Fig. 3A, D ). BODY. Similar to male. Clypeus height 5.75 times AME diameter. Subocular sulci present below ALE, long and wide, not clearly demarcated ( Fig. 3A ). CHELICERA. Cheliceral teeth and stridulation file as in male ( Fig. 3A ). LEGS. Leg formula 1243. Metatarsus with 3 trichobothria ( Fig. 1E ). Spination of legs as in male. EPIGYNUM AND VULVA ( Figs 1C–D , 2F–H ). The epigyne has a large dorsal plate scape. It is almost as broad as the dorsal plate in ventral view ( Fig. 1C ), extending the posterior margin of the ventral plate almost entirely ( Fig. 1C–D ). The copulatory ducts are simple, curved and extend beyond the round receptaculum anteriorly. Variation Males (n = 5): total length 2.79–3.06, cephalothorax length 1.28–1.51, cephalothorax width 0.87–1.05, femur I length 1.20–1.41. Females (n = 5): total length 2.98–3.90, cephalothorax length 1.36–1.60, cephalothorax width 0.97–1.13, femur I length 1.13–1.41.