Chimarra forcellinii, 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 : 10-11

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.3848175

persistent identifier

https://treatment.plazi.org/id/656986B7-7CBD-45A3-B73D-6C12058B2079

taxon LSID

lsid:zoobank.org:act:656986B7-7CBD-45A3-B73D-6C12058B2079

treatment provided by

Carolina

scientific name

Chimarra forcellinii
status

sp. nov.

Chimarra forcellinii sp. nov.

urn:lsid:zoobank.org:act:656986B7-7CBD-45A3-B73D-6C12058B2079

Figs 5 View Fig , 16 View Fig

Diagnosis

Chimarra forcellinii sp. nov. is a close relative of C. fenoevo sp. nov. These two species differ by the shape of the inferior appendages (lateral view), L-shaped in C. forcellinii sp. nov. ( Fig. 5A View Fig ), whereas triangular in C. fenoevo sp. nov. ( Fig. 4A View Fig ). Another useful diagnostic character is the maximum width of the phallotheca: that is at the apex in C. fenoevo sp. nov. ( Fig. 4D View Fig ), whereas in C. forcellinii sp. nov. it is in the middle of the tubular part ( Fig. 5D View Fig ).

Etymology

This species is dedicated to Maxence Forcellini in tribute to his work for the aquatic biomonitoring of La Réunion.

Type material

Holotype

MADAGASCAR: ♂, Sahatandra River near Ambodiriana, 19°01′32″ S, 48°20′28″ E, 980 m, 4 Apr. 1992, leg. J.-M. Elouard.

GoogleMaps

Description

SIZE. Forewing 6.3 mm, hind wing 5.3 mm. TERGUM X. Both dorsal and ventral branches elongated, ventral branch almost straight, dorsal branch slightly and regularly curved ventrad in lateral view, strongly angled inward in dorsal view ( Fig. 5B View Fig ).

INFERIOR APPENDAGES. L-shaped (lateral view), anterior branch twice as long as ventral one, distal margin sinuous.

PHALLIC APPARATUS. Ventral lamina shorter than dorsal lamina, digitiform (dorsal view); dorsal lamina with prominent median bulge and straight distal edge ( Fig. 5D View Fig ); internal sclerite strong and globular; phallotremal sclerite well developed including an indistinct dorsal element ( Fig. 5E View Fig ) and a broad plate ending in two hooks ( Fig. 5D View Fig ).

Distribution

Madagascar (endemic), Rianila River basin.

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Trichoptera

Family

Philopotamidae

Genus

Chimarra