Poreuomena sanghensis Massa, 2013 Figs 91-96

Poreuomena sanghensis Massa, 2013. J. Orth. Res. 22: 140; type locality: Central African Republic, Dzanga-Ndoki National Park (MSNG).

Material examined.

Central African Republic, Dzanga-Ndoki National Park, Lake 1, UV trap, 10-12.II.2012 (holotype ♂) (MSNG) ; same data 20-23.II.2012 (allotype ♀); same data 8-10.II.2012 (paratype ♂); same data 20-23.II.2012 (5 paratypes ♂); same data 31.I-2.II.2012 (1 paratype ♂) (BMPC); Central African Republic, Dzanga-Ndoki National Park, border of Lake 1, 13-14.II.2012 (2 paratypes ♂) (BMPC) ; Central African Republic, Dzanga-Ndoki National Park, Lake 1, camp 1, 14-15.II.2012 (paratype ♂) (BMCP) ; Central African Republic, Dzanga-Sangha SR, Camp 3, 4-6.II.2005 (2♂); 10-11.X.2008; Camp 1, 14-15.X.2008 (light) (2♂) (PAPC); Central African Republic, Dzanga-Ndoki NP, Lake 1, 30.XI-1.XII.2010 (light) (1♂); Central African Republic, Dzanga-Ndoki NP, Lake 1, 25-26.I.2012 (light), 9-10.II.2012, 10-11.II.2012, 14-15.II.2012 (light) (6♂) (BMPC & PAPC) . Cameroon, Campo Ma'an National Park (lowland rainforest) (950 m alt.) 10-22.III.2018 (MV Light Trap), Fotsing, Ishmael, Miles, Safian (1♂) ; Cameroon, Campo Ma'an National Park (lowland rainforest) (950 m alt.) 10-22.III.2018 (UV Cold Cathode Light Trap), Fotsing, Ishmael, Miles, Safian (2♂) ; Gabon, Mikongo (Rougier), Mts de Cristal (secondary forest) (430 m alt.) 28.VII-12.VIII.2019 (MV Light Trap), Albert, Aristophanous, Bie Mba, Dérozier, Moretto (3♂) (ANHRT).

Diagnosis.

Small and fragile species, green (alive) or brown (preserved) coloured, with a brown-reddish upper area of the abdominal tergites. The 10th abdominal tergite of P. sanghensis is similar to P. wilverthi, however, not downcurved, but produced posteriorly with a deep median fold. The male cerci are also similar between these two species, however, much more fragile-built in P. sanghensis .

Description.

Typical Poreuomena species with an elongate habitus (Fig. 91). Stridulatory area of the left tegmen short and straight (Fig. 92). The stridulatory file has ca. 40 teeth, of which 7-8 are proximally placed nearly perpendicularly to the others (Fig. 93). The ventral margins of the hind femora have 2 spines. The 10th tergite ends with two short reddish rounded flat lobes with an inner spine (Figs 94, 95); the cerci have a wide round base, with an inner spine, then becoming narrower; upcurved and pointed apically (Figs 94-96). The male subgenital plate is stout, the processes are slender and incurved, forming a circular space between them (Fig. 96).

Colour.

Predominantly green when alive, brown to tawny when preserved; dorsal area of abdominal tergites brown-reddish. A black marking is present at the base of the tegmina of the male, absent in the female.

Measurements

(mm). Males. Body length: 15.2-17.5; pronotum length: 3.0-3.2; pronotum height: 2.5-2.7; length hind femora: 16.0-18.8; length of tegmina: 23.6-24.8.

Female. Body length: 19.4; pronotum length: 3.3; pronotum height: 2.8; length of hind femora: 19.2; length of tegmina: 30.0; length of ovipositor: 3.9.

Distribution.

Central African Republic (Dzanga-Ndoki National Park and Dzanga-Sangha Special Reserve), Cameroon (Massa 2013; 2015), and Gabon (Massa, in press).