Poreuomena crassipes Karsch, 1890

Hemp, Claudia & Massa, Bruno, 2021, Biogeographical and evolutionary aspects of a Guineo-Congolian bushcricket tribe: Revision of the genera Cestromoecha Karsch, 1893 and Poreuomena Brunner von Wattenwyl, 1878, with the description of new species (Orthoptera, Tettigoniidae, Phaneropterinae), Deutsche Entomologische Zeitschrift 68 (1), pp. 45-79 : 45

publication ID	https://dx.doi.org/10.3897/dez.68.60193
publication LSID	lsid:zoobank.org:pub:227B7394-69C5-447F-B984-250DF1ADFBE1
persistent identifier	https://treatment.plazi.org/id/87E48235-8903-5E70-B9D4-27339316A9C9
treatment provided by	Deutsche Entomologische Zeitschrift by Pensoft
scientific name	Poreuomena crassipes Karsch, 1890
status	stat. rev.

Treatment

Poreuomena crassipes Karsch, 1890 stat. rev. Figs 36-40 View Figures 36–40

Poreuomena crassipes Karsch, 1890. Entom. Nachricht. 16: 364; Type locality: Cameroon ( MfN).

Material examined.

Central African Republic, Dzanga-Ndoki National Park , Ndoki, Lake 1, UV trap 1, 31.I.-2.II.2012 (♂) ; 11-12.II.2012 (♂) ; 20-23.II.2012 (♂); Central African Republic, Dzanga-Ndoki NP, Lake 1, camp 1, 15-16.II.2012 (♂) ; Central African Republic, Dzanga-Ndoki NP, Lake 1, UV trap 2, 15-16.II.2012 (♂) ; Central African Republic, Dzanga-Ndoki NP, Lake 1, 11-12.II.2012 (light) (3♂) ; Lake 3, 25-26.II.2012 (light) (1♂) (BMPC); Central African Republic, Dzanga-Ndoki NP, Lake 1, 29-30.XI.2010 (1♂, 1♀) ; 30.XI-1.XII. 2010 (light) (1♂) (PAPC).

Diagnosis.

Morphologically closely related to P. biaculeata sp. nov. and P. wilverthi . All three species share a similar 10th abdominal tergite that is flap-like, deeply divided into two lobes in P. biaculeata sp. nov. (Figs 33 View Figures 29–35 , 34 View Figures 29–35 ), with an indentation only at its posterior margin and a central furrow in P. wilverthi (Fig. 107 View Figures 101–107 ) and with only a shallow groove medially in P. crassipes (Fig. 40 View Figures 36–40 ). The cerci of the three species are also similar, stout at their bases, narrowed halfway into a sclerotised tip in P. biaculeata sp. nov. (Figs 33 View Figures 29–35 , 34 View Figures 29–35 ), evenly tapering into a tiny sclerotised tip in P. wilverthi (Figs 104 View Figures 101–107 , 106 View Figures 101–107 ) and stout in P. crassipes with two sclerotised dents at their apices (Figs 39 View Figures 36–40 , 40 View Figures 36–40 ).

Description.

Karsch (1890, p. 364, note 1) described very briefly only the female of C. crassipes from Cameroon. Massa (2013) described the male. The 10th tergite is apically rounded with a clear bilobate incision (Fig. 40 View Figures 36–40 ); the cerci are robust, up- and incurved, their apex is sharply narrowed and pointed (Figs 39 View Figures 36–40 , 40 View Figures 36–40 ). The subgenital plate is not long, but clearly bilobate (Fig. 40 View Figures 36–40 ). The stridulatory area of the left tegmen is black, short and straight (Fig. 37 View Figures 36–40 ) and the stridulatory file has ca. 40 teeth, apically upcurved (Fig. 38 View Figures 36–40 ).

Measurements

(mm). Males. Body length: 17.3-19.6; pronotum length: 3.8-4.1; pronotum height: 3.3-3.6; length of hind femora: 19.3-20.2; length of tegmina: 27.3-30.6.

Distribution.

P. crassipes is known from Cameroon ( Karsch 1890; Ragge 1968), the Central African Republic ( Massa 2013; Massa et al. 2020), the Democratic Republic of the Congo and the Ivory Coast ( Ragge 1967; 1968).