Oxyduronia, Popov †, George B., Fishpool, Lincoln D. C. & Rowell, C. Hugh F., 2019

Popov †, George B., Fishpool, Lincoln D. C. & Rowell, C. Hugh F., 2019, A review of the Acridinae s. str. (Orthoptera: Acridoidea: Acrididae) of eastern Africa with taxonomic changes and description of new taxa, Journal of Orthoptera Research 28 (2), pp. 37-105 : 60

Oxyduronia gen. n.

Type species.

- Oxyduronia anablepioides sp. n., here described and designated.

Description.

-Below medium size, of medium build. Integument finely rugulose, matt, weakly pilose. Antennae relatively thick, narrowly ensiform, somewhat shorter than length of head and pronotum. Head short, apex sharply pointed; frons oblique, straight to weakly convex in profile. Frontal ridge broad, deeply sulcate with thick margins divergent downwards and narrowly constricted at junction with fastigium. Fastigium of vertex broad, acutely parabolic, its surface convex, meeting the frons at acute angle, forming a projecting sharp overhang above antennal fossae; temporal foveolae absent; carinulae low but distinct, positioned along margin; arcuate sulcus weak, well in front of the middle. Compound eye small, narrowly pointed apically; sub-ocular distance greater than longest diameter of eye in both sexes. Pronotum weakly tectiform; dorsum finely pitted and ridged especially in metazona and anterior part of prozona; anterior margin straight to weakly curved, hind margin obtuse angular with slightly produced rounded apex. Pronotal carinae sharp and raised; lateral carinae straight to outflexed, particularly in female; parallel to weakly divergent caudad, particularly in male. Only typical sulcus distinct on dorsum, interrupting all carinae; metazona subequal to prozona in both sexes. Lateral pronotal lobes flat to weakly concave with irregular ridges and callosities; a submarginal ridge is present below its upper margin but is less marked than in Leopardia ; lower margin parallel to upper in its posterior part and ascending in its anterior half; lower hind angle sharp. Mesosternal lobes transverse with rounded angles, interspace wide. Tegmina narrow with parabolic, tapering and somewhat swept back apices; reticulation moderately dense; intercalary vein in medial area weak or absent. Hind wings narrow, pointed and distinctly shorter than tegmina. Hind femora moderately slender; hind knee with lower outer lobe short and rounded, inner subacute. Hind tibiae slender, slightly shorter than femora; inner spurs twice length of outer; arolia large. Abdominal appendages in male unspecialized, elongate and slender; concealed genital structures similar to those in Duronia and Leopardia (Figs 117-119). Epiphallic bridge (Fig. 119) moderately robust, arched and without median process; lophi digitiform, markedly widened and flattened but not upturned apically; posterior projections elongate and slender. Aedeagal valves as in Fig. 118. Ovipositor with short robust upturned valves; lower valves without basal tooth. Structure of spermathecal duct (Fig. 117) and spermatheca similar to that in Duronia ; subgenital plate with rounded median projection.

Discussion.

-Genus monotypic. In its general characteristics, and particularly its genital structures, it is like Leopardia , and is a fairly close relative of Duronia . However, the structure of head and pronotum in Oxyduronia is sufficiently distinctive to fully warrant generic recognition.