Arantia (Euarantia) retinervis 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 : 481-482

Arantia (Euarantia) retinervis Karsch, 1889

http://lsid.speciesfile.org/urn:lsid: Orthoptera .speciesfile.org:TaxonName:464814

Karsch (1889). Berlin Ent. Z., 32: 433, 437. ( Figs. 32 , 63 , 95a, b )

Type locality: CAMEROON. Chinchoxo, Barombi and SIERRA LEONE. Depository : MfN, Berlin. Kind of type: syntypes males.

Material examined. CAMEROON. Chinchoxo (3♂ syntypes). Barombi Station (2♂ syntypes). Barombi Station , Preuss (2♂, 3♀). Victoria (1♀). John-Albrechtshöhe 27.V–3.VI.1896, L. Conradt (1♂, 2♀). Lolodorf, V. Heyne (2♀). Victoria (4♂, 11♀). (2♂) ( MNCN) . Staudinger (1♂). Mundame, Rohde (2♂, 1♀). Barombi Station , Preuss (1♂, 1♀). Mukonje Farm, R. Rohde (4♂, 9♀). TOGO . Bismarckburg, R. Büttner (1♂). Bismarckburg 15– 31.XII.1890, R. Büttner (1♂, 1♀); Togo 31.III.1894, E. Baumann (1♂) ; Togo, Misahöhe 1894, E. Baumann (2♂). Misahöhe XII.1893, E. Baumann (2♀) . SIERRA LEONE Staudinger (1♂) ( MfN) . Dohrn (2♀). GUINEA. Ebebeyin VII.1948, J. Mateu (1♀) . Rio Kongüe (Muni), Escalera (1♂). EQUATORIAL GUINEA . Fernando Póo, Basile VIII–IX.1901, L. Fea (1♂). Mt . Nimba VII–XII.1951, Lamotte & Roy (1♂, 1♀). DEMOCRATIC REPUBLIC CONGO . Fernand-Vaz X. 1902 (1♀). N’Jolé (= Ndjole ) XI.1902 (1♀) ( MSNG) . Sibiti XI.1963, A . Descarpentriès & A. Villiers (1♂) ( MNHN) . 27.III–5.IV.1975 (1♂) ( MZUF). CENTRAL AFRICAN REPUBLIC. Dzanga-Ndoki National Park, Ndoki , 26.I.2012; Lac 1, 20–23.II.2012; 13–14.II.2012; 15–16.II.2012 (light trap), P. Moretto (5♂); Ivory Coast, Man, Mt. Tonkoui (1200m) 28.VI–1.VII.2014 (light trap), P. Moretto (1♂) . IVORY COAST . Comoe, Kolomabira (228m) 11.XI.2014 (light trap), P. Moretto (1♂). Taï Nat. Park, Res. Station 19.III.2017 (light trap), B. Massa (1♂). Taï Nat. Park, Res. Station 4.IV.2017 (light trap), P. Moretto (4♂) (BMCP). Man, Mt. Tonkoui (1171m) 12–18.VII.2015 (light trap), M. Aristophanous, P. Moretto, E. Ruzzier (1♂). Telo Village (415m) 10–13.XI.2015 (light trap), M. Aristophanous, P. Moretto, E. Ruzzier (2♂) ( NHM) . Between Lambarene and the sea, E. Hang 1901 (1♂). Lamto 15–30.X.1968, C. Girard (light) (1♂). 15 km before Lamto 13.IX.1968, C. Girard (1♂, 1♀). Staudinger (1♂) . GABON. Ogoue (1♀) ( NMW) . GABON. N’Douamang 28.IX.1985, A. Pauly (1♀). N’Toum V. 1985 , 5–20.X.1985, A . Pauly (2♂). Assok Ngum 1.II.1986, A . Pauly (1♂) (RBINS).

Tegmina width: 13–16.20; tegmina length/width: 2.4–3.6; tegmina width/pronotum length: 1.9 ( Heller et al. 2014).

Characters. A. retinervis is a species of medium size (body length: ♂ 30 mm, ♀ 35 mm) ( Fig. 32 ). Karsch (1889) described the male from Cameroon and Sierra Leone. Karsch (1891, 1893) recorded it from Togo, Bolívar (1906), Griffini (1906) and Ebner (1943) from Fernando Pòo ( Equatorial Guinea), Sjöstedt (1929) from Democratic Republic Congo and Ragge (1968b) from the Ivory Coast. The anterior margin of the tegmina is slightly expanded. A small black spot is present at the base of the tegmina. The stridulatory file is arcuate and narrow and consists of ca. 60–65 teeth ( Fig. 63 ). Veinlets of tegmina form some hexagons ( Fig. 32 ) and may have small dark spots. Fore tibiae have a dark-reddish base and tympana are darkened. Fore femora have 4–7 inner ventral spines, mid femora unarmed or with 1–2 small spines, hind femora with 5 outer and 7 inner ventral small yellow spines. Male cerci are stout, long, slightly in-curved and show a bifid brown spatular and pointed apex ( Figs. 95a, 95b ). Male styli are absent. The ovipositor has two lateral pointed protuberances, the subgenital plate of the female is short and rounded. Probably green in life, preserved insect yellowish green.

Distribution. Widely distribution throughout West and Central Africa (records from Sierra Leone, Guinea, Togo, Ivory Coast, Equatorial Guinea, Democratic Republic Congo, Central African Republic and Cameroon).

Figures

FIGURES 30–33. Habitus of Arantia (Euarantia) melanota (holotype) (30), A. (Euarantia) mauritiana (holotype) (31), A. (Euarantia)retinervis (syntype) (32) and A.(Euarantia) bispinosa n. sp. (holotype) (33).

FIGURES63–71.Stridulatory files of Arantia retinervis (63), Arantia excelsior (64), Arantia scurra(65), Arantia tibiaspinosa n. sp.(66), Arantia griffinii n. sp. (67), Arantia bispinosa n. sp.(68), Arantia galbana (69), Arantia dimidiata (70) and Arantia purpurea (71).

FIGURES 85–95. Cerci of Arantia fasciata from South Africa (85a) and Tanzania (85b), Arantia regina (86, 87), Arantia rectifolia (dorsal and lateral view) (88a, 88b), Arantia incerata (lateral and dorsal view) (89a, 89b), Arantia latifolia (90), Arantia marmorata (91), Arantia congensis (92), Arantia melanota (93a, 93b), Arantia mauritiana (94) and Arantia retinervis (95a, 95b).