Morgenia lehmannorum Heller & 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 : 164-165

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scientific name

Morgenia lehmannorum Heller & Massa

sp. n.

Morgenia lehmannorum Heller & Massa sp. n. Figs 4 View Figures 1–4 , 12 View Figures 9–14 , 22 View Figures 19–22 , 30 View Figures 27–34 , 39 View Figures 39–44 , 40 View Figures 39–44

Material examined.

Uganda, Semliki Forest National Park (00°49 ’30” N, 30°03 ’40” E) 1-31.VIII.2014, A. and G. Lehmann (♂ holotype) ( MfN) GoogleMaps .


Presently known only from the type locality, Semliki Forest (Uganda).


Green, with the exception of tympana of fore legs that are brown and one black spot between tympana. Stridulatory area brownish. Black spots at the base of tegmina.


Males. Head and antennae. Fastigium of vertex narrow, sulcate above, not contiguous with fastigium of frons. Eyes rounded, well projecting. Legs. Fore coxae armed with a fine 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 4 small spines, fore tibiae with 2 spines + 1 spur on inner ventral side and 1 spine + 1 spur on outer ventral side, mid femora unarmed, mid tibiae with 2 outer and 2 inner ventral spines, inner ventral spur of mid tibiae long, up-curved, exceeding ¾ of the first tarsal article; its length is about 10% the length of tibia. On the outer ventral margin of mid tibiae, three close short spines are present (Fig. 30 View Figures 27–34 ). Hind femora armed with 3 small spines on outer and 3 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 straight, posterior rounded, humeral sinus well developed, lobes of pronotum rounded. Tegmina narrow with rounded apices (Figs 4 View Figures 1–4 , 12 View Figures 9–14 , measurements in Table 1), wings longer than tegmina. Stridulatory area of the left tegmen raised (Fig. 12 View Figures 9–14 ). Mirror of the right tegmen smaller than in M. hamuligera (Fig. 12 View Figures 9–14 ). Pattern of costal area of tegmina with a net of small cells; stridulatory file 1.8 mm long, arched and composed of ca. 100 teeth; the distal teeth of the stridulatory file are more widely spaced than the proximal ones, that are also more densely set together (Fig. 22 View Figures 19–22 ). Cerci club-shaped with an apical spine, the inner part is concave, the outer rounded. Subgenital plate with a small apical concavity in ventral view with tips straight in lateral view (Figs 39 View Figures 39–44 , 40 View Figures 39–44 ).


M. lehmannorum sp. n. is characterised by narrow tegmina (Table 1), club-shaped cerci, a long and up-curved spur on the mid tibia, the stridulatory area brown, the costal area of tegmina with a net of small cells and the stridulatory file that is 1.8 mm long, arched and composed of ca. 100 teeth, the distal teeth are more widely, the proximal ones more closed set. Differences to other species of the genus are summarised in Table 2.


We have the pleasure to dedicate this species to the German orthopterologists Arne and Gerlind Lehmann, who collected the only known specimen.