Chimarra hamatra, 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 : 19-20

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.3848167

persistent identifier

https://treatment.plazi.org/id/EA3CF81A-84AF-4AF0-8997-F48E8E00ADB4

taxon LSID

lsid:zoobank.org:act:EA3CF81A-84AF-4AF0-8997-F48E8E00ADB4

treatment provided by

Carolina

scientific name

Chimarra hamatra
status

sp. nov.

Chimarra hamatra sp. nov.

urn:lsid:zoobank.org:act:EA3CF81A-84AF-4AF0-8997-F48E8E00ADB4

Figs 10 View Fig , 17 View Fig

Diagnosis

The closest species to C. hamatra sp. nov. is C. makiorum sp. nov. The tergum X of these two species are relatively small (as in C. jejyorum sp. nov. and in C. gattolliati sp. nov.) but, their inferior appendages are roughly rectangular and not triangular or L-shaped as in all the other species of the group. Moreover, these appendages have a distinct and heavily sclerotized supplementary branch on the distal edge. This branch is inserted at mid-height in C. hamatra sp. nov. ( Fig. 10A View Fig ), whereas almost apically in C. makiorum sp. nov. ( Fig. 11A View Fig ).

Etymology

The name is a Malagasy adjective that means ‘uncommon’.

Type material

Holotype

MADAGASCAR: ♂, mounted on three slides, tributary of the Sahatandra River , near Moramanga, 18°56′27″ S, 48°29′12″ E, 800 m, 28 Apr. 1998, leg. J.-M. Elouard.

GoogleMaps

Description

SIZE. Forewing 7.1 mm, hind wing 5.6 mm.

TERGUM X. Lateral lobe reduced; dorsal branch straight (lateral view), relatively short with, at midlength, a small lateral bump bearing two sensillae; ventral branch short and thin.

INFERIOR APPENDAGES. Wide, roughly rectangular in lateral view; ventral branch weakly developed; median branch protruding, inserted on distal edge (lateral view), making the apex claw-shaped on dorsal view ( Fig. 10C View Fig ).

PHALLIC APPARATUS. Long, distal half of the phallotheca poorly sclerotized with the exception of a strip terminated by a triangular tip; internal sclerite long, with a basal triangular extension and curved apex; phallotremal sclerite relatively small, ending in a pair of hooks.

Distribution

Madagascar (Moramanga area).

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Trichoptera

Family

Philopotamidae

Genus

Chimarra