Stenampyx viridiflavum, Hemp, 2020

Hemp, Claudia, 2020, A new species of Stenampyx Karsch, 1890 from East Africa (Orthoptera: Tettigoniidae, Pseudophyllinae, Phyllomimini) - evidence of a former connection of West-Central and East African forests, Zootaxa 4763 (4), pp. 593-599 : 594-595

publication ID	https://doi.org/ 10.11646/zootaxa.4763.4.9
publication LSID	urn:lsid:zoobank.org:pub:7B3AD348-2739-4CE3-9078-ACD004ADB74B
DOI	https://doi.org/10.5281/zenodo.3804770
persistent identifier	https://treatment.plazi.org/id/EC068788-FF84-FFA4-4F86-AFCDCF5DF091
treatment provided by	Carolina
scientific name	Stenampyx viridiflavum
status	sp. nov.

Treatment

Stenampyx viridiflavum sp. nov. Hemp C.

Figs. 1–7 View FIGURE 1 View FIGURE 2 View FIGURE 3 View FIGURE 4 View FIGURE 5 View FIGURE 6 View FIGURE 7

Holotype. Female. Uluguru Mountains , forest above Morningside (1800 m), March 2020.

Further paratype material: 2 females, 3 males, same data as holotype. 1 female, Tanzania, Magoroto Forest Estate, East Usambara Mountains, everygreen lowland wet forest, 850 m, S 5°07′00″ E 38°45′00″, August 2019. 1 female, Tanzania, Uluguru Mountains, forest above Morningside, March 2019. Depository: CCH.

Description. Female. General habitus and coloration. Medium-sized, of yellow-green colour with irregular set small and larger dark patches ( Fig. 1 View FIGURE 1 ). Head & antennae. Elongate fastigium verticis, sulcate ( Fig. 2 A View FIGURE 2 ), slightly longer than scapi. Frons of whitish colour ( Fig. 4 A View FIGURE 4 ). Eyes round, prominent, of light colour when alive ( Fig. 1 View FIGURE 1 ), reddish to dark when preserved ( Fig. 2 A View FIGURE 2 ). Antennae comparatively thick, yellowish-green with numerous dark rings along length; longer than body length. Thorax. Pronotum wider than long, anterior margin round, posterior margin truncate and slightly elevated ( Fig. 2 A View FIGURE 2 ) as typical for genus; with median carina, carina deeply interrupted by sulcus 2. Pronotal sternites unarmed, prosternum rectangular, mesosternum rhombic, metasternum wider than long, small ( Fig. 4 A View FIGURE 4 ). Tegmina elongate with rounded apices; medially where folded tegmina meet dark net-like and callous line. Legs. Fore femora with ventral double row of black-tipped spinules; mid femora only with outer ventral row of black-tipped spinules; hind femora also unarmed on inner ventral keel but with larger outer row of very broad-based spines, giving the femora a serrated appearance ( Fig. 4 B View FIGURE 4 ). Knees and hind tibiae of hind legs yellow. All tibiae quadrangular with four rows of small black-tipped spinules; fore tibiae with slightly inflated conchate tympana. Black marking on all legs at joint of tibia with femur and part of tarsi black. Abdomen. Subgenital plate with broad base, triangular, deeply U-shaped incised at posterior margin ( Fig. 2 C View FIGURE 2 ). Ovipositor with inflated whitish base, then elongate and sclerotized, only slightly curved ( Fig. 3 View FIGURE 3 , 4 B View FIGURE 4 ).

Male. Similar to the female but smaller ( Fig. 6 View FIGURE 6 A–D). Stridulatory file as in Fig. 7 C View FIGURE 7 , slightly curved with many very closely-set teeth. Cerci stout, tips inwardly curved and with small sclerotized indented at apex ( Fig. 7 A View FIGURE 7 ). Supra-anal plate almost round. Subgenital plate typical for Pseudophyllinae, stout shaft, divided into two lobes at apex ( Fig. 7 B View FIGURE 7 ).

Measurements (mm), female Magoroto Forest Estate (N = 1) body length 22.6; median length of pronotum 4.0; length of tegmina 36.3; width of tegmina 10.5; length of hind femur 12.5; ovipositor 8.5.

Measurements (mm), female, Uluguru Mountains (N = 3) body length 29.5–34.2; median length of pronotum 4.4–4.7; length of tegmina 42.5–43.6; width of tegmina 12.5–13.3; length of hind femur 12.8–13.7; ovipositor 9.7–11.5; length of antennae 52.2–57.5.

Measurements (mm), male, Uluguru Mountains (N = 3) body length 24.7–26.3; median length of pronotum 3.5–3.9; length of tegmina 34.0–37.6; width of tegmina 11.0–11.2; length of hind femur 11.1–11.5.

Etymology. From latin: - viridi = green and - flavum = yellow, since this new species has a very conspicuous green and yellow colour when alive.

Habitat. Lowland evergreen wet to montane forest (700–2100 m).

Distribution. Tanzania, East Usambara Mountains (Magoroto Forest Estate, 700 m) and Uluguru Mountains (forest above Morningside, 1800–2100 m).

Diagnosis. Similar to S. annulicornis but larger in body size ( Fig. 5 View FIGURE 5 ). Female subgenital plate with straight anterior margin and comparatively broad-based while S. annulicornis has a female subgenital plate that forms almost two wings ( Fig. 2 D View FIGURE 2 ). Male of both species with similar outer genitalic apparatus. The subgenital plate is shorter in S. viridiflavum n. sp. compared to S. annulicornis .

Remarks: Female individuals of S. viridiflavum n. sp. from the Uluguru Mountains are larger than the single female collected in the East Usambara Mountains. Studies on the bioacoutsics and molecular analysis should be conducted to determine whether more than one species is present in eastern Africa.