Arantia (Arantia) orthocnemis Karsch, 1890
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.6001432 |
persistent identifier |
https://treatment.plazi.org/id/C9352751-FF9B-FF86-FF4A-FC52FF02F839 |
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Plazi |
scientific name |
Arantia (Arantia) orthocnemis Karsch, 1890 |
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Arantia (Arantia) orthocnemis Karsch, 1890 View in CoL ( Figs. 8 View FIGURES 8–11 , 77 View FIGURES72–84 )
http://lsid.speciesfile.org/urn:lsid: Orthoptera .speciesfile.org:TaxonName:464832
Karsch (1890). Entom. Nachricht., 16 (23): 357.
Type locality: CAMEROON. Barombi Station . Depository: MfN, Berlin. Kind of type: syntypes male and female.
Material examined. CAMEROON. Barombi Station, Preuss (1♂, 1♀ syntypes) . (1♂, 1♀). Mundame, L. Conradt; Cameroon, Victoria (1♀). Isanga Lobaje Eays, Jainide , X.1894, G. Tessmann (1♀) ( MfN). (1♂, 1♀) ( MNCN). Mukonje Farm, R. Rohde (1♂, 1♀) ( MSNG). Mundame (2♂). Mukonje Farm, R. Rohde (4♂, 3♀) ( RBINS). DEMOCRATIC REPUBLIC CONGO . Congo, Urw.-Mawambi 1910, Grauer (2♂) ( NMW).
Tegmina width: 9.8–11; tegmina length/width: 4.6; tegmina width/pronotum length: 1.5 ( Heller et al. 2014).
Characters. A. orthocnemis is a species of medium size (body length ♂ 31 mm, ♀ 34 mm) ( Fig. 8 View FIGURES 8–11 ). Karsch (1890) described both sexes from Barombi Station ( Cameroon). Sjöstedt (1902) recorded it from Itoki ( Cameroon), Bolívar (1906) from Fernando Póo ( Equatorial Guinea), Griffini (1908) from Mukonje Farm ( Cameroon) and Bruner (1920) from Lolodorf ( Cameroon). It has narrow tegmina with reddish or ivory to white coloured spots, and with basal black markings. Tarsi in most specimens are black. Fore femora with 5–8 inner ventral spines (1 specimen from Mundame has 5 spines on the left femur, while the right is unarmed), mid femora are unarmed, hind femora with 6 outer and 8 inner ventral spines. Male specimens are easily distinguished from other Arantia species comparing the male cerci. The bases are swollen and a sclerotized ridge stretches from the base to the apex at the inner side. Basally at the inner side of the cerci a process is present, armed with an almost circular sclerotized ridge ( Fig. 77 View FIGURES72–84 ). Styli well developed. The ovipositor has two lateral protuberances. The subgenital plate of the female is short and slightly pointed.
Affinities. Karsch (1889) and Griffini (1908) pointed out its affinity with A. hydatinoptera . A. orthocnemis has morphologically completely different male cerci while in A. hydatinoptera the male cerci are apically compressed and the tips incurved and a basal process is lacking as well as the inner sclerotized ridge. A. hydatinoptera is probably more closely related to A. leptocnemis . A. orthocnemis has almost identical male cerci as A. dentata (see above).
Distribution. Widespread in Central and Western Africa ( Cameroon, Democratic Republic Congo, Equatorial Guinea).
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.
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