Morgenia angustipinnata Massa, 2018

Massa, Bruno, Heller, Klaus-Gerhard, Warchalowska-Śliwa, Elzbieta & Moulin, Nicolas, 2018, The tropical African genus Morgenia (Orthoptera, Tettigoniidae, Phaneropterinae) with emphasis on the spur at the mid tibia, Deutsche Entomologische Zeitschrift 65 (2), pp. 161-175 : 165

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Morgenia angustipinnata Massa

sp. n.

Morgenia angustipinnata Massa sp. n. Figs 6 View Figures 5–8 , 16 View Figures 15–18 , 24 View Figures 23–26 , 31 View Figures 27–34 , 45 View Figures 45–50 , 46 View Figures 45–50

Material examined.

Central African Republic, Dzanga-Ndoki National Park , Mboki (5°18 ’31” N, 25°57 ’16” E), 24.I.2012 (light), Sangha 2012 team (1♂ holotype, MSNG); Dzanga-Sangha Special Reserve at 35m on canopy of Terminalia superba (02°20 ’03.0” N, 16°08 ’11.2” E, 375m) 9.II.2005, P. Annoyer (1♂ paratype, BMPC); same locality 13-23.II.2012 (light), Sangha 2012 team (2♂ paratypes, BMPC) GoogleMaps .


At the present time, known only from the type locality, Dzanga-Ndoki National Park (Central African Republic).


Head and pronotum yellow-green, antennae yellowish, abdomen yellow-brown, cerci yellow, tegmina with a black line at base, green with brownish stridulatory area. One black spot between tympana of fore tibiae.


Males. Head and antennae. Fastigium of vertex narrow, sulcate above, not contiguous with fastigium of frons. Eyes rounded, well projecting. Antennae longer than body. Legs. Fore coxae armed with a small spine. Fore tibiae furrowed on upper margin, distinctly widening above tympanum, conchate on inner, open on outer side. Fore femora armed on inner ventral side with 3-4 small spines, fore tibiae with 3 spines + 1 spur on inner side and 3 spines + 1 spur on outer ventral side, mid femora with 4-5 spines on outer ventral side, mid tibiae with 6-7 spines on outer and 3-4 on inner ventral sides. The inner ventral spur of mid tibiae is more apically located, short, up-curved and does not exceed the base of the first tarsal article; its length is about 2.5-3.0% the length of tibia. On the outer ventral margin of mid tibiae, three close short spines are present (Fig. 31 View Figures 27–34 ). Hind femora armed with 3-4 small spines on outer and on inner ventral sides, hind tibiae with many spines on ventral and dorsal sides + 3 spurs on each side. Thorax. Pronotum narrowing at the level of the humeral sinus, flat above, lateral margins rounded, anterior margin incurved, posterior margin rounded, humeral sinus well developed, lobes of pronotum rounded. Tegmina very narrow with rounded apices (Figs 6 View Figures 5–8 , 16 View Figures 15–18 , measurements in Table 1), wings longer than tegmina. Stridulatory area of the left tegmen raised and stout. Mirror of the right tegmen smaller than in M. hamuligera (Fig. 14 View Figures 9–14 ). Costal area of tegmina with a net of small cells (Fig. 16 View Figures 15–18 ); stridulatory file 1.7 mm long, arched, composed of ca. 70 widely spaced teeth (Fig. 24 View Figures 23–26 ). Cerci club-shaped with an apical spine, the inner part is concave, the outer rounded. Subgenital plate long and narrow, with a small concavity, interior margins undulate in ventral view with tips rather straight in lateral view (Figs 45 View Figures 45–50 , 46 View Figures 45–50 ).


Tegmina of M. angustipinnata sp. n. are very narrow (Table 1); their costal area has a net of small cells. The stridulatory file is 1.7 mm long, arched, composed of ca. 70 widely spaced teeth and the spur of the mid tibia is very short. Differences to other species of the genus are summarised in Table 2.


From Latin angusta = narrow, and pinnata = winged.