First record of shield-backed katydids in Madagascar with the description of a new genus and three new species (Orthoptera: Ensifera: Tettigoniidae: Tettigoniinae Arytropteridini)
Author
Hugel, Sylvain
text
Zootaxa
2019
2019-12-11
4706
4
546
560
journal article
24654
10.11646/zootaxa.4706.4.4
a5168d5b-f2f3-4ca9-be27-cf0a4b3421df
1175-5326
3616903
D5917547-D026-42E4-AE59-A891C30E756C
Toliaridectes meridionalis
n. gen.
n. sp.
Fig. 1, 4, 7
,
10, 13, 16, 19, 22
,
25–27
,
34–40
,
55
,
58–59
,
72
,
Tab. 1
.
Toliaridectes meridionalis
n. gen.
n. sp.
, here described.
Holotype
male.
Madagascar
, province
Toliara
,région
Anôsy
,
Réserve
de Berenty
;
25.0096°S
,
46.3079°E
,
26.iii.2005
,
N. Cliquennois
leg.,
MNHN
(MNHN-EO-ENSIF 10799).
Male
paratype
.
[
Madagascar
, province
Toliara
, region Androy, district Beloha],
Beloha
;
iii.56
. AR.
Female (not a
type
).
Madagascar
, province
Toliara
, région
Anôsy
,
Réserve
de Sainte-Luce
;
24.8028°S
,
47.1636°E
,
15.iii.2005
,
N. Cliquennois
leg., coll. SH
.
Remark: since the female has been collected in a relatively distinct area (ca.
90 km
apart), in a more humid and coastal environment, I prefer to exclude it from the
type
series since further specimens may prove it to belong to another species.
Other females possibly belonging to that species but from more northern localities: [
Madagascar
, province
Toliara
, region Atsimo-Andrefana,] Sakaraha, Lambomakandro,
III-56
A.R.,
MNHN
; Lohela, Mahala,
11.
VI
.1964
;
Madagascar
Sud, D
. Wintrebert Rec.,
MNHN
; LoHena, Mahala,
11.
VI
.1964
Madagascar
Sud, D
. Wintrebert Rec.,
MNHN
.
Diagnosis.
Color: hind femur with distinct shiny black longitudinal pattern on external (outer) field (
Fig. 22
, similar pattern in
T. wendenbaumi
n. gen.
n. sp.
, pattern weaker in
T. antsycurvis
n. gen.
n. sp.
). Male.
Xth
abdominal tergite emargination as deep as wide (
Fig. 36
; similar in
T. wendenbaumi
n. gen.
n. sp.
, wider in
T. antsycurvis
n. gen.
n. sp.
); paraprocts with a long digitiform projection (
Fig. 35
; wide and short projection in
T. wendenbaumi
n. gen.
n. sp.
, shorter digitiform projection in
T. antsycurvis
n. gen.
n. sp.
). Cercus median projection long (
Fig. 37
; as long as in
T. antsycurvis
n. gen.
n. sp.
, shorter in
T. wendenbaumi
n. gen.
n. sp.
). Subgenital plate wider than long (
Fig. 34
; similar in
T. antsycurvis
n. gen.
n. sp.
, longer than wide in
T. wendenbaumi
n. gen.
n. sp.
). Titillators distal end pointing (
Fig. 55
; similar in
T. wendenbaumi
n. gen.
n. sp.
, enlarged distally in
T. antsycurvis
n. gen.
n. sp.
). Female. Subgenital plate wider than long, with U shaped emargination (
Fig. 58
; wider than long in
T. antsycurvis
n. gen.
n. sp.
, about as long as wide in
T. wendenbaumi
n. gen.
n. sp.
). Ovipositor very long for the genus (
Fig. 59
,
Table 1
).
TABLE 1.
Measurements of
Toliaridectes meridionalis
n. gen.
n. sp.
(in mm).
| Body |
Pronotum |
Pronotum |
Fore femur |
Mid femur |
Hind femur |
Hind femur |
Ovipositor |
| length |
length |
width |
length |
length |
length |
width |
length |
| ♂ |
Holotype |
17.5 |
6.4 |
4.7 |
5.7 |
5.3 |
16.1 |
3.4 |
- |
| ♀ |
21.4 |
7.1 |
6.8 |
7.0 |
6.2 |
20.4 |
3.8 |
14.5 |
FIGURES 1–9.
Toliaridectes
n. gen.
male head and pronotum.
1–3: head and pronotum in dorsal view, before removing the forewings for examination. 4–6: head and pronotum in left side view. 7–9: face in frontal view. 1, 4, 7:
Toliaridectes meridionalis
n. gen.
n. sp.
2, 5, 8:
Toliaridectes wendenbaumi
n. gen.
n. sp.
3, 6, 9:
Toliaridectes antsycurvis
n. gen.
n. sp.
All pictured specimens are holotypes.
FIGURES 10–24.
Toliaridectes
n. gen.
legs.
10–12: left fore tibia inner view. 13–15: left fore tibia outer view. 16–18: left mid tibia anterior view. 19–21: left mid tibia posterior view. 22–24: left hind femur outer view. 10, 13, 16, 19, 22:
Toliaridectes meridionalis
n. gen.
n. sp.
11, 14, 17, 20, 23:
Toliaridectes wendenbaumi
n. gen.
n. sp.
12, 15, 18, 21, 24:
Toliaridectes antsycurvis
n. gen.
n. sp.
All pictured specimens are holotypes.
Description.
Size average for the genus (
Table 1
). Color (male
holotype
and females only; the male
paratype
is discolored): head genae without distinct black pattern; hind femur with distinct shiny black longitudinal pattern on external (outer) field (
Fig. 22
). Male.
Xth
abdominal tergite emargination as deep as wide (
Fig. 36
); paraprocts with a long digitiform projection (
Fig. 35
). Cercus dorsal lobe with angulose tip; median projection long, bilobate (
Fig. 37–40
). Subgenital plate wider than long; with shallow but distinct emargination; styli separated by less than styli length (
Fig. 34
). Titillators distal end pointing; internal part shaped as inverted narrow Y (
Fig. 55
). File with ca. 38 teeth (
Fig. 27
). Female. Subgenital plate wider than long, with U shaped emargination (
Fig. 58
). Ovipositor very long for the genus, ventral margin with a long strait area (
Fig. 59
,
Table 1
).
Deriviatio nominis.
After the distribution of the species, in the South of
Madagascar
.