Arantia (Arantia) ivoriana, Hemp & Massa, 2017

Hemp, Claudia & Massa, Bruno, 2017, Review of the African genera Arantia Stål and Goetia Karsch (Orthoptera: Tettigoniidae: Phaneropterinae), Zootaxa 4362 (4), pp. 451-498 : 460

Arantia (Arantia) ivoriana n. sp. ( Figs. 6 , 52 , 73a, b )

http://lsid.speciesfile.org/urn:lsid: Orthoptera .speciesfile.org:TaxonName:500639

Material examined. IVORY COAST. Taï National Park, Res. Station 21.III.2017 (light trap), B. Massa (♂ holotype) ( BMCP).

Measurements of male. Body length: 25.3; pronotum length: 5.3; pronotum height: 4.8; hind femur: 28.0; tegmina: 40.0; tegmina width: 7.2; tegmina length/width: 5.5; tegmina width/pronotum length: 1.3.

Diagnosis. A. ivoriana n. sp. is a small sized (♂ 25.3 mm), very characteristic species, with translucent tegmina. The stridulatory vein is elevated above the wing plane and the cerci have a lateral long spine and two apical spinules.

Description. Male ( Fig. 6 ). General habitus and colour pattern. Predominantly yellow-green, base of tegmina black, hidden by pronotum. Head and antennae. Eyes oval, fastigium of vertex sulcate. Antennal segments reddish with small brown rings. Head and legs yellow with brownish dots and stripes, face yellow. Thorax and legs. Fore coxa unarmed. Tympana on fore tibia open on outer and closed on inner side. Pronotum green, anterior margin slightly concave, posterior margin rounded. Tegmina oval, green with a dark spot at the base, 5.5 times longer than broad. The stridulatory area of the left tegmen is almost straight and elevated above the wing plane, the stridulatory file is straight and consists of ca. 85–90 evenly spaced teeth ( Fig. 52 ). Fore femora with 4 inner ventral spines, fore tibiae with 8 inner and outer ventral spines, and 6 dorsal outer spines. Mid femora with 3 outer ventral spines, mid tibiae with 14 outer and inner ventral spines, 12 spines on outer and inner dorsal margins. Hind femora with 6 outer and 7 inner ventral spines, hind tibiae slightly curved, with 20 outer and inner ventral spines. Abdomen. Male cerci with expanded apex with an inner broad-based stout spine and two outer spinules. Subapically with a long spine with sclerotized tip so that cerci almost look branched ( Fig. 73a ). Subgenital plate short and narrow, the apex is straight. Styli present ( Fig. 73b ).

Female. Unknown.

Etymology. Named after the country Ivory Coast.

Affinities. It is related to A. (Arantia) angustipennis , from which it may be separated by the different shape of the cerci.

Distribution. Known only from the type locality (National Park of Taï, Ivory Coast).

Figures

FIGURES 4–7. Habitus of Arantia (Arantia) angustipennis (holotype) (4), A. (Arantia) brevipes (syntype) (5), A. (Arantia) ivoriana n. sp. (holotype) (6) and A. (Arantia) fatidica (7).

FIGURES51–62.Stridulatory files of Arantia brevipes (51), Arantia ivoriana n. sp. (52), Arantia simplicinervis (53), Arantia quinquemaculata n. sp. (54), Arantia fasciata from Mt. Kilimanjaro (55), Arantia fasciata from South Africa (56), Arantia rectifolia (57), Arantia tanzanica n. sp. (58), Arantia regina (59), Arantia marmorata (60), Arantia congensis (61) and Arantia melanota (62).

FIGURES72–84.Cerci of Arantia angustipennis (72a) and original drawing of Chopard (1954) (72b), Arantia ivoriana n. sp. (dorsal and ventral view) (73a, 73b), Arantia fatidica (dorsal and lateral view) (74a, 74b), Arantia brevipes (75), Arantia dentata (76), Arantia orthocnemis (77), Arantia manca(lateral and dorsal view) (78a, 78b), Arantia gracilicercata (dorsal and lateral view) (79a, 79b), Arantia hydatinoptera (80), Arantia leptocnemis (81), Arantia simplicinervis (82), Arantia quinquemaculata n. sp. (83a, 83b), and Arantia bispinosa n. sp. (dorsal view and lateral view of left cercus) (84a, 84b).