Leiodontocercus vicentae n. sp.

Figs. 18a, 18b, 19b, 19c, 19d, 22

urn:lsid:zoobank.org:act: 0C6A364B-7864-4EC8-A739-3B543C77FBB8

Material examined. Republic of Congo, Sangha prov., N-N NP, Mbeli Camp (Gibertiodendron forest) 02°12’48.5”N, 16°23’45.6”E (370m) 24–26.VI.2022, Actinic Light Trap, V. Dérozier (♁ holotypus); Republic of Congo, Sangha prov., N-N NP, Ndoki formation (secondary forest), 02°12’47.7”N, 16°23’45.8”E, 29.IX–1.X.2022, MV Light Trap, V. Dérozier, B. Fouka, A. Kirk-Spriggs, H. Takano (1♁ paratypus); Republic of Congo, Sangha prov., N-N NP, Bomassa camp (secondary for.) (341m) 02°12’36.9”N, 16°11’30.2”E, 10–16.X.2022, MV Light Trap, V. Dérozier, B. Fouka, A. Kirk-Spriggs, H. Takano (2♀ paratypi) (ANHRT); Republic of Congo, Sangha prov., N-N NP, Mbeli camp (Gilbertiodendron forest) (341m) 02°14’23.8”N, 16°23’52.1”E, 1–10.X.2022, MV light trap, V. Dérozier, B. Fouka, A. Kirk-Spriggs, H. Takano (1♁ paratypus) (BMPC).

Description. Male. General habitus and colour. Predominantly green-brown, two lateral black spots on anterior margin of pronotum and corresponding hind margin of head, black stripe on the posterior margin of pronotum, abdomen yellow, last abdominal tergite orange with anterior brown stripe, antennal segments yellowish and black, legs green-yellowish, hind tibiae yellowish with black rings (Figs. 18a, 18b). Head and antennae. Eyes oval-roundish, prominent, antennae long and thin. Thorax. Anterior margin of pronotum slightly concave, posterior margin straight (Fig. 18a). Lower margin of pronotal lobes rounded. Wings. Tegmina very narrow. Stridulatory file consisting of ca. 100 teeth, stridulatory area of the left tegmen reddish a little protruding backwards (Figs. 18a, 18b). Right tegmen without mirror. Legs. Fore coxae armed. Tympana on fore tibiae open on outer, closed on inner side. Fore femora with 8 inner ventral spines, fore tibiae with 5 inner and outer ventral spines. Mid femora armed with 7 outer ventral spines, mid tibiae with 3 inner and outer spines ventral margins. Hind femora with 7–8 outer and inner ventral spines, hind tibiae straight with many ventral spines + 3 spurs on each side. 2 pairs of small spines on the outer and inner knees of hind femora. Abdomen. Cerci stout and apically excavated, apex downcurved and its margins denticulate; from ventral view a small spine is visible at the base (Figs. 19b, 19c, 19d). Posterior margin of the subgenital plate nearly straight, styli absent.

Female. Same characters of the male, ovipositor very reduced, typical of the genus. Abdomen yellow with last tergite black.

Measurements (mm). Males. Body length: 14.7–14.8; length of pronotum: 3.3–3.4; depth of pronotum: 2.9– 3.0; length of hind femora: 21.3–21.5; length of tegmina: 27.3–27.9; width of tegmina: 2.8–3.2. Females. Body length: 15.4–15.8; length of pronotum: 3.3–3.4; depth of pronotum: 3.0–3.1; length of hind femora: 23.0–23.3; length of tegmina: 27.8–28.0; width of tegmina: 2.8–3.0.

Etymology. Leiodontocercus vicentae n. sp. is with pleasure named after Vicenta Llorente del Moral, distinguished Spanish entomologist, who has contributed very much to the knowledge of European and African Orthoptera.

Distribution. Presently it is only known from Nouabalé-Ndoki National Park (Republic of Congo). Fig. 22 summarizes the known distribution of all the species of this genus.

Affinities. Figs. 18a, 18c–18h, 19a, 19e, 15f, 20a–20f compare the characteristics of all the species of the genus Leiodontocercus, in particular, presenting the pattern of the stridulatory area and cerci (cf. Massa 2020).