Preussiini Karsch, 1890

Massa, Bruno, 2021, Orthoptera Tettigoniidae as indicators of biodiversity hotspots in the Guinean Forests of Central and West Tropical Africa, Zootaxa 4974 (3), pp. 401-458 : 439

Tribe Preussiini Karsch, 1890 ( Figs. 40c , 41-44 )

Remarks. When Ragge (1981) described Brycoptera lobata , he did not establish which tribe of Phaneropterinae it could belong to. Characters of this taxon are very peculiar and represent an extreme modification of the habitus towards a foliaceous aspect eroded by the possible mandibles of a caterpillar; all the legs are laterally expanded and this makes it objectively difficult to recognize the tribe it belongs to ( Fig. 40c ). Here it is proposed to ascribe this taxon to the tribe Preussiini Karsch, 1890 , characterized as follows: foliaceous aspect, large size (body length: 22.0-26.0 mm), fastigium of vertex narrow, pointed and furrowed, as large as first antennal segment, face large and short, fastigium of frons with a small furrowed horn. Eyes oval, moderately prominent, scapus placed within an area with raised margins. Pronotum flat and smooth, nearly as long as high, with evident lateral margins and well-developed humeral excision, lateral lobes rounded on hind and lower margins. Legs short and stout; fore coxae armed, fore femora short and laterally flattened, fore tibiae dorsally sulcate, tympana conchate. Tegmina well developed, slightly shorter than hind wings. Tenth tergite unmodified, subgenital plate concave, long and narrow, provided with styli. Cerci stout and in-curved ( Massa 2016).

Figures

FIG. 40. Leiodontocercus angustipennis Chopard, 1954: a) stridulatory file under the male left tegmen; b) cerci of the male; Brycoptera lobata Ragge, 1981: frontal view of head and fore legs.

FIGS. 41–44. Lateral view of Enochletica ostentatrix Karsch, 1896 (41); Preussia lobatipes Karsch, 1890 (42); Weissenbornia praestantissima Karsch, 1888 (43); Brycoptera lobata Ragge, 1981 (44).