Chimarra gensonae, Ird & Inra, 2017

Gibon, François-Marie, 2017, The Chimarra lehibemavo species-group, new and endemic to Madagascar (Trichoptera, Philopotamidae), European Journal of Taxonomy 319, pp. 1-31 : 15-16

publication ID

https://doi.org/10.5852/ejt.2017.319

publication LSID

lsid:zoobank.org:pub:256407D2-64CC-4B3C-8C24-FA7C8CBF50B2

DOI

https://doi.org/10.5281/zenodo.3848173

persistent identifier

https://treatment.plazi.org/id/D0D40DA2-B53D-4699-812D-A4BA6B5C80EF

taxon LSID

lsid:zoobank.org:act:D0D40DA2-B53D-4699-812D-A4BA6B5C80EF

treatment provided by

Carolina

scientific name

Chimarra gensonae
status

sp. nov.

Chimarra gensonae sp. nov.

urn:lsid:zoobank.org:act:D0D40DA2-B53D-4699-812D-A4BA6B5C80EF

Figs 8 View Fig , 18 View Fig

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 View Fig , 14A View Fig ). The two species differ by the phallotheca, short and stout in C. gensonae sp. nov. ( Fig. 8 View Fig D–E), long and slim in C. tamara sp. nov. ( Fig. 14 View Fig 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.

GoogleMaps

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 View Fig ); internal sclerite short, stout,

bullet-shaped ( Fig. 8E View Fig ); phallotremal sclerite including an ovoid basal part, a thin spine and a pair of hooks.

Distribution

Madagascar (endemic), Ranomafana National Park and surroundings areas.

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Trichoptera

Family

Philopotamidae

Genus

Chimarra