Amytta mramba Hemp & Heller, 2017, n. sp.
Creators: name: Hemp, Claudia
name: Heller, Klaus-Gerhard
Publisher: name: Zenodo
Year: 2017
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Orthoptera
Tettigoniidae
Amytta
Amytta mramba

description: Amytta mramba n. sp. Hemp
(Figs. 9, 10)
http://lsid.speciesfile.org/urn:lsid: Orthoptera.speciesfile.org:TaxonName:496657
Holotype male, Tanzania, North Pare Mountains, Mramba Forest, montane forest 1600 m, January 2016, -3.615422 37.606829. Depository MfN.
Paratypes. 1 female, same data as holotype; Depository MfN.
Further paratype material: 7 males, 7 females, same data as holotype and February 2015. Collection C. Hemp.
Description. Male. General body shape and colour: Flightless, small, uniformly light yellowish-green. Behind eyes two lateral yellow lines, which continue along the whole length of pronotum. Eyes brown-reddish. Tegmina abbreviated covering about half of dorsal abdomen; green with reddish margin (Fig. 9 A). Head and antennae: Fastigium of vertex smooth conical, conus between eyes about half the size of first antennal segment. Antennae thin, longer than body length and whitish. Eyes circular, prominent. Cuticle of pronotum shiny without hairs on surface, but with short hairs along pronotal margins. Tegmina shortened with reduced venation. Stridulatory area hidden under pronotum. Alae about length of tegmina. Thorax and legs: Fore and mid tibiae with open tympanum, with 4 outer and 4 inner spines, apical with a minute pair of spurs. Abdomen: Last abdominal tergite undifferentiated, broad (Fig. 10 A). Cercus long, laterally expanded forming hollow space along its length interrupted by constriction about halfway and then expanding again forming three-dimensionally lobe-like apices (Fig. 10 A, B). Complicated structure or titillator protruding at apex with umbrella-like expansion apically. Subgenital plate elongate with lobe-like compressed styli (10 B).
Female. General habitus and colour as in male but with generally longer tegmina and alae. Spination as male. Ovipositor of female slender and smooth, only slightly up-curved. Subgenital plate broad roundish as in Fig. 9 D, supra-anal plate with deep median groove similar to A. judithae n. sp. (Fig. 11 B).
Measurements
males (n = 6)
Body length 12–14 mm Median length of pronotum 4.7–5.0
Length of hind femur 8.0–8.5
Visible median length of elytra 3.7–4.5
females (n = 6)
Body length 11.5–12.5 Median length of pronotum 4.0–4.3
Length of hind femur 9.1–10.2 Visible median length of elytra 5.5–6.0
Length of ovipositor 8.0–9.5 Habitat. Canopy dweller of submontane to montane forest, 1450–1650 m.
Distribution. Tanzania, North Pare Mountains, Mramba Forest.
Diagnosis. An alate Amytta species with tegmina shorter than body length. Only A. judithae n. sp. also has tegmina and wings covering about 2/3 of the abdomen. However, A. judithae n. sp. has a strongly differentiated 10th abdominal tergite forming a strongly down-curved process while the 10th abdominal tergite is undifferentiated in A. mramba n. sp. Delimitation of females see at A. judithae n. sp.
Etymology. Named after Mramba Forest in the utmost west of the North Pare Mountains.
description: Published as part of Hemp, Claudia & Heller, Klaus-Gerhard, 2017, Revision of the genus Amytta (Orthoptera: Tettigoniidae, Meconematinae) and new species from East Africa, pp. 295-317 in Zootaxa 4263 (2) on pages 307-310, DOI: 10.11646/zootaxa.4263.2.5, http://zenodo.org/record/573109