Arantia (Euarantia) syssamagalei Massa et Annoyer, 2020

Massa, Bruno, Annoyer, Philippe, Perez, Cyrille, Danflous, Samuel & Duvot, Guilhem, 2020, Orthoptera Tettigoniidae (Conocephalinae, Hexacentrinae, Phaneropterinae Mecopodinae, Hetrodinae) from some protected areas of Central African Republic, Zootaxa 4780 (3), pp. 401-447 : 423-425

Arantia (Euarantia) syssamagalei Massa et Annoyer , n. sp. Figs. 40–42

Material examined and depository. CAR. Dzanga-Sangha SR, camp 1 (platform 40m), 23–24.X.2008 (light), P. Annoyer (1♂ holotypus) ( MSNG) ; same data (2♂ paratypi) ; Camp 1, 17–18.X.2008 (light), P. Annoyer (1♂ para- typus) ; Sangha-Ndoki NP, Lake 1, 29–30.XI.2010 (light), P. Annoyer (1♂ paratypus) ( BMPC) ; Dzanga-Sangha SR, Bayanga-Lidjombo pk 15, 31.V–1.VI.1998 (light) (1♂ paratypus) ; Lake 1, 15–16.II.2012 (light), P. Annoyer (1♂ paratypus) ( PAPC) .

Diagnosis. A. syssamagalei n. sp. is similar to A. scurra . Both species share similar male cerci, their apices being club-shaped. With A. scurra it shares an almost identical colour pattern of pronotum and legs. The joints of the fore and mid legs are dark brown in both species. Styli are very minute in A. syssamagalei n. sp., the stridulatory file is different.

Description. Male ( Fig. 40 ). General habitus and colour pattern. Large to medium sized species with broad wings. Fastigium of vertex and fastigium of frons green while face dark brown or black. Posterior part of pronotum dark brown or black ( Figs. 40a, 40b ). Base of spines on femora black, hind legs with pattern of dark stripes, also joint of fore and mid legs of same dark brown colour. Tegmina yellowish-green with brown wide patches. Base of tegmina black. Styli brown or black. Head and antennae. Eyes oval-roundish, very dark. Antennae long and thin, brown. Fastigium of vertex forming a ridge with sulcus; fastigium of frons conical; both fastigia separated by deep gap. Thorax. Anterior margin of pronotum concave, posterior rounded. Metazona of pronotum dark brown. Tegmina broad with truncate margin. Stridulatory file on underside of left tegmen long, almost straight, with 105–110 teeth, in the inner part larger and more widely spaced than in the outer part ( Fig. 41 ). Legs. Fore coxa without spine. Tympana of fore tibiae open on outer side, conchate on inner side, whole area slightly inflated and marked dark brown in this area. Fore femora on inner side with 4–5 ventral spines, mid femora with 4–5 outer ventral black spines, hind femora with 7–8 black outer and 3–4 inner ventral spines. Fore tibiae with 2–3 inner dorsal spines and 4–5 inner and outer ventral spines. Mid tibiae with ventral row of 6–7 irregular set pairs of spines, 1–2 on both dorsal sides. Hind tibiae tetragonal with 4 rows of numerous spines; dorsal 1 pair of spurs, ventral 2 pairs. 2 spines on the outer knees of hind femora. Abdomen. Cerci long and slender club-shaped, sinuous at apical part and decussate ( Fig. 42 ). Club small, dark. Subgenital plate longer than wide and with very minute styli ( Fig. 42 ).

Female. Unknown.

Measurements (mm). Body length: 24.6–28.3; length of pronotum: 7.5–8.2; height of pronotum: 8.0–8.6; length of hind femora: 28.1–30.3; length of hind tibia: 31.0–33.1; length of tegmina: 49.5–51.4; width of tegmina: 14.0–14.4; length/width tegmina: 3.5–3.6; width tegmina/length pronotum: 1.7–1.9.

Etymology. A. syssamagalei n. sp. is dedicated to Jean Laurent Syssa Magalé, dean of Faculty of Sciences, University of Bangui, Central African Republic, who helped very much the SANGHA missions.

Affinities. A. syssamagalei n. sp. is related to A. scurra , from which it is easily separated by its colour, the absence of white and blackish spots on fore margin of tegmina, the presence of spines on fore and mid femora, the absence of styli and the stridulatory file much more long and with more teeth than in A. scurra , where they are only ca. 50 evenly spaced.

Distribution. A. syssamagalei n. sp. at present is known only from the Dzanga-Sangha Special Reserve and the Dzanga-Ndoki National Park in Central African Republic.

Figures

FIGURES 36–42. 36–39. Arantia (Arantia) gretae Massa, n. sp., male: habitus in lateral view (36), lateral view of last abdominal segments (37), ventral view of cerci and subgenital plate (38), lateral view of cerci (39); 40–42. Arantia (Euarantia) syssamagalei Massa et Annoyer, n. sp., male: habitus in lateral view (40), dorsal view of head, pronotum and stridulatory area (40a), lateral view of head and pronotum (40b), stridulatory file (41), dorsal view of cerci (42).