Arantia (Goetia) dimidiata ( Bolívar, 1906 ) 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 : 487-488

publication ID	https://doi.org/ 10.11646/zootaxa.4362.4.1
publication LSID	lsid:zoobank.org:pub:350690F1-97E4-4FF5-B51A-E32118F95FFF
DOI	https://doi.org/10.5281/zenodo.6001482
persistent identifier	https://treatment.plazi.org/id/C9352751-FFB5-FFA9-FF4A-FD5EFA93FED1
treatment provided by	Plazi
scientific name	Arantia (Goetia) dimidiata ( Bolívar, 1906 )
status	comb. nov.

Treatment

Arantia (Goetia) dimidiata ( Bolívar, 1906) View in CoL n. comb. ( Figs. 47–48 View FIGURES 45–50 , 70 View FIGURES63–71 , 102–103 View FIGURES 96–105 )

http://lsid.speciesfile.org/urn:lsid: Orthoptera .speciesfile.org:TaxonName:500649

Bolívar (1906). Mem. Soc. espan. Hist. nat. 1: 335.

Type locality: EQUATORIAL GUINEA. Fernando Póo and CAMEROON. Depository: MNCN, Madrid. Kind of types: syntypes male and females.

Syn. Arantia gestri Griffini, 1906

Griffini (1906). Ann. Mus. Civ. Stor. Nat. Genova, 3 (2): 384.

Type locality: GABON. N’Jolè (=Ndjole). Depository: MSNG, Genoa. Kind of type: holotype male.

Material examined. EQUATORIAL GUINEA. Bioco ( Fernando Póo ), Escalera (1♂, 1♀ syntypes) . CAMEROON. L. Conradt (1♀ syntype) ( MNCN) . CENTRAL AFRICAN REPUBLIC. Dzanga-Ndoki National Park, Lake 1, (light trap) 10–11.II.2012 (1♂) ; 11–12.II.2012 (2♂); 20–23.II.2012 (3♂); 24–25.II.2012 (6♂). Ndoki, border of Lake 1 (light trap) 13–14.II.2012 (6♂). Ndoki, Lake 1 (light trap) 2, 15–16.II.2012 (4♂). Ndoki, Lake 3 (light trap) 18–19.II.2012 (1♂). Ndoki, Lake 1, platform on the canopy, 35m (light trap) 4–5.II.2012 (1♂); 10– 11.II.2012 (1♂); Ndoki, Lake 1, platform on the canopy, 45m (light trap) 28–29.II.2012 (1♂). Ndoki, saltpans 25.I.2012 (1♂), P. Moretto (BMCP). A. gestri : GABON. Ndjolé XI–XII.1902, L. Fea (♂ holotype) ( MSNG) . DEMOCRATIC REPUBLIC CONGO . Kasai, Mange, V. Ferry (1♀) ( RBINS) .

Measurements. Males. Body length: 27.0–32.0; pronotum length: 7.0–7.2; pronotum height: 5.2–6.1; hind femur: 26.0–29.0; hind tibiae: 31.0–34.0; length of tegmina: 45.0–47.0; tegmina width: 9.5–10.5 ( A. gestri : 11.8); tegmina width/pronotum length: 1.3–1.4 ( A. gestri : 1.7). Females. Body length: 25.0–27.0 ( A. gestri : 27.4); pronotum length: 6.1–6.5 ( A. gestri : 6.4); pronotum height: 5.8–6.0 ( A. gestri : 5.8); hind femur: 28.5; hind tibiae: 27.5; length of tegmina: 44.0–47.0 ( A. gestri : 49.8); tegmina width: 10.5–10.6 ( A. gestri : 11.0); ovipositor: 3.8–4.2 ( A. gestri : 3.0); tegmina width/pronotum length: 1.6–1.7 ( A. gestri : 1.7).

Characters. A. dimidiata is easily distinguished from A. galbana View in CoL by the absence of hexagonal areas in the tegmina and by black spines present on the legs of A. galbana View in CoL ( Karsch 1891; Bolívar 1906) (compare Figs 48 and 49 View FIGURES 45–50 ). In addition, the cerci of A. dimidiata View in CoL are long, in-curved, dorso-ventrally compressed and end with a small black spine, while those of A. galbana View in CoL are sinuate and end with a round hairy bulge (compare Figs 102 and 104 View FIGURES 96–105 ). Further, some specimens of A. dimidiata View in CoL have a dark fascia on the posterior area of the pronotum, absent in A. galbana View in CoL . The stridulatory file consists of ca. 55–60 teeth, the central situated teeth are broader and more spaced ( Fig. 68 View FIGURES63–71 ). Griffini (1906) described the male of Arantia gestri View in CoL from the Democratic Republic Congo ( Fig. 47 View FIGURES 45–50 ) and later ( Griffini 1908) the female from Mange (Kassay, Congo). A peculiar character is the black velvet color of the hind margin of the pronotum. The fore coxae are armed with a very small spine (both in the male holotype and in the female), fore femora armed with 7–9 black-tipped small spines. The outer tympanum of the fore tibia is black. The mid femora are armed with 6 small ventral spines, and the hind femora with 6–8 ventral black-tipped spines. The anterior margin of the tegmina is straight with small black spots, and the stridulatory area of the left tegmen also has small black markings, as in A. dimidiata View in CoL . Further, a concavity on the lower margins of the pronotal lobes is present also in A. dimidiata View in CoL . Cerci of A. gestri View in CoL are long, hairy, with an enlarged apex and a very small dark spine, identical to those of A. dimidiata View in CoL (compare Figs 102 and 103 View FIGURES 96–105 ). Styli are absent. The ovipositor of the female is short and the last tergite has two tumescent bumps. A. gestri View in CoL and G. dimidiata View in CoL were described in the same year, thus authors of their descriptions probably were unaware of the respective described taxa. However, G. dimidiata was described on 1st August 1906, while A. gestri View in CoL on 5th August 1906 (cf. Poggi 2010). Thus, A. gestri Griffini, 1906 View in CoL is a junior synonym of G. dimidiata Bolívar, 1906 View in CoL .