Revision of the genus Amytta (Orthoptera: Tettigoniidae, Meconematinae) and new species from East Africa
Author
Hemp, Claudia
Author
Heller, Klaus-Gerhard
text
Zootaxa
2017
4263
2
295
317
journal article
33086
10.11646/zootaxa.4263.2.5
0a5eaf77-8aa5-4527-9341-0afe6d0f62a3
1175-5326
573109
6B77DA06-E855-4909-9D52-5FFF6FCF0FEB
Amytta savannae
n. sp.
Hemp
(
Figs. 11
A, 12)
http://lsid.speciesfile.org/urn:lsid:
Orthoptera
.speciesfile.org:TaxonName:496658
Holotype
male,
Tanzania
, Mt
Kilimanjaro
, southern slopes,
Rau Forest
near
Moshi
, lowland forest,
800 m
,
July 2015
. Depository
MfN
.
Paratype
female,
Tanzania
, Mt
Kilimanjaro
,
Mabungu Hill
, savanna woodland,
910 m
,
July 2014
. Depository
MfN
.
Further
paratype
material:
1 male
,
Tanzania
, Mt
Kilimanjaro
,
Uchira
, savanna woodland,
870 m
,
July 2015
.
Collection C.
Hemp.
Description.
Male.
General body shape and colour
: Reduced tegmina and wings (
Fig. 12
A), uniformly light yellowish-green. Behind eyes two lateral yellow lines continuing to pronotum. Eyes brown to reddish-brown.
Head and antennae:
Fastigium of vertex smooth, about as long as half the length of scapus; with blunt apex. Antennae thin, whitish. Eyes circular, prominent. Cuticle of pronotum shiny. Elytra reduced to broad lobes. Stridulatory area hidden under pronotum. Alae tiny, narrow lobes.
Thorax and legs
: All femora unarmed. Fore and mid tibiae with open tympanum, with 4–5 outer and inner spines, apical with a minute pair of spurs.
Abdomen:
Last abdominal tergite with median process (
Fig. 12
B). Cerci thick with dorsal flange, ending in two laterally flattenend lobes (
Fig. 12
B, C). Subgenital plate longish, as in
Fig. 12
C. Titillator stout with central thin thorn-like hook.
Female. General body shape, size and colour as male with longer tegmina covering abdomen by about 2/3 of its length. Ovipositor slender and smooth, almost straight (
Fig. 12
D). Supra-anal plate divided into two parts (
Fig. 11
A). Subgenital plate shield-like broad.
Measurements
males (n = 2)
Body length 13–14 Median length of pronotum 5.2–5.4 Length of hind femur 8.6
Length of elytra 2.0–2.8
females (n = 1)
Body length 12.5
Median length of pronotum 4.1
Length of hind femur 9.1
Length of elytra 5.6
Length of ovipositor 9.0
Habitat
. Woodland savanna and lowland forest,
800–
910 m
.
Distribution
.
Tanzania
, Mt
Kilimanjaro
.
Diagnosis.
Males have shortened tegmina and a short process at the posterior margin of the 10th abdominal tergite. The only other
Amytta
species with shortened tegmina and a process on the last abdominal tergite is
A. kilomeni
n. sp.
The 10th abdominal tergite of
A. kilomeni
n. sp.
is longer and more strongly down-curved.
A. savannae
n. sp.
is found in the tree layer of lowland forest and savanna woodlands while
A. kilomeni
n. sp.
occurs in the herb layer of the submontane to montane zone in the North Pare Mountains.
The female of
A. savannae
n. sp.
is distinguished from other species with shortened tegmina by the supra-anal plate which is split into two lobe-like parts. In
A. judithae
n. sp.
the tegmina and wings are longer than body length and the supra-anal plate not split into two parts although it has a deep median depression and the lateral parts are strongly tube-like bulged giving the impression that also here two parts are formed.
Etymology.
Named after its habitat, genitive form of savanna.