Arantia (Arantia) simplicinervis Karsch, 1889

Hemp, Claudia & Massa, Bruno, 2017, Review of the African genera Arantia Stål and Goetia Karsch (Orthoptera: Tettigoniidae: Phaneropterinae), Zootaxa 4362 (4), pp. 451-498 : 464-466

Arantia (Arantia) simplicinervis Karsch, 1889 ( Figs. 14 , 53 , 82 )

http://lsid.speciesfile.org/urn:lsid: Orthoptera .speciesfile.org:TaxonName:464833

Karsch (1889). Berlin Ent. Z., 32: 433, 434, 438.

Type locality: CAMEROON. Chinchoxo and Kuako (Kimpoko). Depository: MfN, Berlin. Kind of type: syntypes males.

Syn. Arantia (Arantia) simplicinervis curvata Griffini, 1908

Griffini (1908). Mem. Soc. entom. Belgique, Bruxelles, 15: 212.

Type locality: CAMEROON. Mukonje Farm. Depository: RBINS, Bruxelles. Kind of type: holotype female.

Material examined. CAMEROON. Chinchoxo (1♂ syntype) . Victoria (2♀) (MfN). Mukonje Farm, R. Rohde (1♀ holotype of ssp. curvata ) (RBINS). TOGO. Bismarckburg 11–17.I.1893, L. Conradt (1♀) . ANGOLA. Dundo (1♂) . GUINEA. Fernando Póo, Biapa (1♂) ( MNCN) . Fernando Póo, Punta Frailes X–XI.1901, L. Fea (1♂) ( MSNG) . G. Bakoré 18.III.1981, C. Girard & M. Lamotte (1♂, 2♀) . Mt. Nimba (2♂) ( MNHN) . CENTRAL AFRICAN REPUBLIC. Dzanga-Ndoki National Park, Mboki 25.I.2012; Ndoki, Lake 1 , 10–11.II.2012; 11– 12.II.2012; 13–14.II.2012; 22–23.II.2012; 24–25.II.2012; 28–29.II.2012 (light trap), P. Moretto (10♂) (BMCP). Dzanga-Ndoki National Park, Ndoki, Lake 1, 14.II.2012, 21–22.II.2012 (light trap) (4♂) (PACT). IVORY COAST. Taï National Park, Res. Station 21.III.2017 (night), S. Danflous (1♀) . Taï National Park, Res. Station 16.III.2017, platform 40m (light trap), B. Massa (1♂) ( BMCP) . Man, Mt. Tonkoui (1171m) 12–18.VII.2015 (light trap), M. Aristophanous, P. Moretto, E. Ruzzier (1♂) ( NHM) . GABON. Petit Okano IX.1985, A. Pauly (1♂) . N’Toum 23.II.1982 , 22.VII.1984, 28.VII.1984, V.1985, 18.V.1985, 15.VII.1985, 16.VIII.1985, 5.IX.1985, 9.IX.1985, 5– 20.X.1985, 8.X.1985, A. Pauly (11♂, 1♀) . M’Paga 12.IV.1986, A. Pauly (1♀) . Capo Santa Clara 29.IX.1985, A. Pauly (1♀) . ZAIRE. Bamania VII–VIII.1980, R. Kiss (1♂) ( RBINS) .

Measurements of males. Body length: 29.8±2.5; pronotum length: 6.6±0.2; pronotum height: 6.4±0.2; hind femur: 28.1±1.1; hind tibiae: 33.2±1.5; tegmina: 44.2±1.6; tegmina width: 9.0±0.3; tegmina length/width: 4.9–5.0; tegmina width/pronotum length: 1.3–1.5.

Characters. A. simplicinervis is a medium-sized species (body length ♂ 28–31 mm, ♀ 36–39 mm). Karsch (1889) described both sexes from Chinchoxo and Kuako (Kimpoko, Cameroon). Later, Griffini (1906) recorded it from Fernando Póo ( Equatorial Guinea). It is characterized by whitish-yellowish paranota and more or less rectangular tegmina with thick veinlets ( Fig. 14 ). The metanotum is slightly dark and also the tympana of fore tibiae may be dark. The types and other specimens have two dark spots on the lateral sides of the pronotum. A small black spot is present on the base of the tegmina, more or less hidden by the pronotum. Some specimens have an additional second small black spot in that area. Fore femora are armed with 3–7 spines, mid femora have 4–7 outer spines, hind femora 4–7 inner and 0–7 outer ventral small black-tipped spines [according to Karsch (1889) outer ventral margin of hind femora is unarmed, but in some specimens spines are present]. The stridulatory file is short and consists of 48–50 teeth ( Fig. 53 ). Male cerci are long, comparatively slender, in-curved at their tips and slightly flattened, apically with or without a black swelling and with 2 black small dents ( Fig. 82 ) ( Karsch 1889; Brunner von Wattenwyl 1891). Styli are absent. The ovipositor is shorter than the pronotum.

Remarks. Arantia simplicinervis curvata was described as a variety of A. simplicinervis by Griffini (1908) on one female from Mukonje Farm ( Cameroon). According to Griffini (1908) dimensions of this taxon lie within those of A. simplicinervis (Tegmina width: 10.0; width tegmina/length pronotum: 1.5), with the exception of the larger size (39 mm), more curved apical hind tibiae, spines of hind femora green with dark apex (present also in A. simplicinervis ), the metazona of the pronotum being brown, with a concavity at the posterior margin, and a very short ovipositor (3.7 mm). Sjöstedt (1912) reported it as variety of A. simplicinervis from Buea ( Cameroon). Because of the absence of true differences, A. simplicinervis curvata has to be considered a synonym of A. simplicinervis .

Distribution. Widely distributed in West, Central and south-west Africa (records from Guinea, Togo, Ivory Coast, Cameroon, Central African Republic, Angola).

Figures

FIGURES 12–15. Habitus of Arantia (Arantia) leptocnemis (12: holotype female, 13: male), A. (Arantia) simplicinervis (14) and A.(Arantia) quinquemaculata n. sp. (holotype) (15).

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).