The Chimarra lehibemavo species-group, new and endemic to Madagascar (Trichoptera, Philopotamidae)
Author
Gibon, François-Marie
text
European Journal of Taxonomy
2017
2017-05-18
319
1
31
journal article
22104
10.5852/ejt.2017.319
e352bb73-0c07-4e6d-af55-f369bdab1aab
2118-9773
3829226
256407D2-64CC-4B3C-8C24-FA7C8CBF50B2
Chimarra gensonae
sp. nov.
urn:lsid:zoobank.org:act:
D0D40DA2-B53D-4699-812D-A4BA6B5C80EF
Figs 8
,
18
Diagnosis
Chimarra gensonae
sp. nov.
is closely related to
C. tamara
sp. nov.
When viewed laterally, their tergum X are very similar, characterized by a thick and short dorsal branch and a thin ventral branch (
Figs 8A
,
14A
). The two species differ by the phallotheca, short and stout in
C. gensonae
sp. nov.
(
Fig. 8
D–E), long and slim in
C. tamara
sp. nov.
(
Fig. 14
D–E).
Etymology
It is a pleasure to dedicate this species to my colleague Gwenaelle Genson in recognition of her efforts for the barcoding of caddisflies.
Type material
Holotype
MADAGASCAR
:
♂
, mounted on 2 slides, remaining parts in alcohol,
Tamara River
,
4 km
from Ranomafana
,
21°14′45″
,
47°25′37″ E
,
850 m
,
24 May 1995
.
Paratypes
MADAGASCAR
:
3 ♂♂
, same data as
holotype
, in alcohol;
1 ♂
, Ambatoharanana River near Ranomafana,
21°15′15″ S
,
47°27′34″ E
,
850 m
,
23 May 1995
.
Other specimens
MADAGASCAR
:
1 ♂
, mounted on 3 slides, remaining parts in alcohol, Ranomafana National Park, tributary of the Namorona,
21°15′50″ S
,
47°25′15″ E
,
1230 m
,
7 Nov. 1996
.
Description
SIZE. Forewing
7.6 mm
, hind wing 6.0 mm.
TERGUM X. Dorsal branch wide and short, thumb-shaped when viewed laterally, toward the apex a small protuberance with two sensillae; ventral branch thin as long as dorsal branch; dorsal and ventral branches forming an angle of 65°.
INFERIOR APPENDAGES. Roughly triangular, anterior margin almost twice as long as ventral margin; dorsal part curved distad, inner lobe long, thin, slightly protruding.
PHALLIC APPARATUS. Short compared to other species of the group. Phallotheca split nearly from the base; ventral lamina as long as dorsal lamina, thinner and digitiform; when viewed dorsally, dorsal lamina with a lateral fold and a sudden narrowing after mid-length (
Fig. 8D
); internal sclerite short, stout,
bullet-shaped (
Fig. 8E
); phallotremal sclerite including an ovoid basal part, a thin spine and a pair of hooks.
Distribution
Madagascar
(endemic), Ranomafana National Park and surroundings areas.