Chimarra lehibemavo, 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 : 4-6

Chimarra lehibemavo sp. nov.

urn:lsid:zoobank.org:act:419A1C29-F941-42A7-9663-4FE9CBCF186B

Figs 2 , 16

Diagnosis

Chimarra lehibemavo sp. nov. is one of the largest Afrotropical species of the genus. Together with C. cebegepi sp. nov. and C. saha sp. nov. it forms a sub-group being characteristic in having a long and finger-shaped dorsal branch of tergum X ( Fig. 2A 1, B1 ) and a long dorsal branch of the inferior appendage ( Fig. 2A, C 3 ). Chimarra lehibemavo sp. nov. is characterized by the phallic internal sclerite

which is stout and shorter than the phallotremal sclerite, whereas longer in Chimarra cebegepi sp. nov. ( Fig. 3 D–E) and Chimarra saha sp. nov. ( Fig. 13 D–E).

Etymology

From the Malagasy ‘lehibe’ (= big) and ‘mavo’ (= yellow), referring to the colour and large size of the species.

Type material

Holotype

MADAGASCAR: ♂, mounted on 3 slides, remaining parts in alcohol, Andranomifitatra River , camp IV of the WWF expedition to the Marojejy National Park, 14°26′04″ S, 49°44′05″ E, 1625 m, 12 Nov. 1996, leg. D. Randriamasimanana and J. Legrand.

Paratypes

MADAGASCAR: 1 ♂, in alcohol, Andranomifitatra River, camp III of the WWF expedition to the Marojejy National Park, 14°26′02″ S, 49°44′05″ E, 1225 m, 25 Oct. 1996, leg. D. Randriamasimanana and J. Legrand; 3 ♂♂, in alcohol, camp II of the WWF expedition to the Marojejy National Park, 14°26′02″ S, 49°45′47″ E, 725 m, 16 Oct. 1996, leg. D. Randriamasimanana and J. Legrand; 1 ♂, mounted on 3 slides, remaining parts in alcohol, camp II of the WWF expedition to the Marojejy National Park, 14°26′10″ S, 49°45′37″ E, 750 m, 14 Oct. 1996, leg. D. Randriamasimanana and J. Legrand; 1 ♂, mounted on 2 slides, remaining parts in alcohol, camp I of the WWF expedition to the Marojejy National Park, 14°25′50″ S, 49°46′18″ E, 500 m, 12 Oct. 1996, leg. D. Randriamasimanana and J. Legrand.

Description

SIZE. Forewing 10.0 mm, hind wing 8.0 mm.

TERGUM X. Lateral lobes deeply divided, boomerang-shaped with long dorsal and ventral branches ( Fig. 2A ).

INFERIOR APPENDAGES. Roughly triangular, anterior margin length about twice the ventral margin length; hypotenuse sinuous; internal lobe small and thumb-shaped on lateral view, wide and sinuous on dorsal view.

PHALLIC APPARATUS. Little modified, ventral lamina separate and forming long digitiform plate ( Fig. 2 C–D), dorsal lamina wide and sub rectangular; internal sclerite short and stout, bifid lateral view; phallotremal sclerite with one central peaked element and two hook-shaped lateral elements.

Distribution

Madagascar (endemic), Marojejy National Park.

Figures

Fig. 2. Chimarra lehibemavo sp. nov. A–B. Abdominal segments IX and X. A. Lateral view. B. Dorsal view (partim). C. Inferior appendage, dorsal view. D–E. Phallic apparatus. D. Dorsal view. E. Lateral view. 1 = Lateral lobe of tergum X, dorsal branch. 2 = Lateral lobe of tergum X, ventral branch. 3 = Inferior appendage, dorsal branch. 4 = Inferior appendage, ventral branch. 5 = Inferior appendage, internal lobe. 6 = Phallotheca, ventral lamina. 7 = Phallotheca, dorsal lamina. 8 = Phallotheca, internal sclerite. 9 = Phallotheca, phallotremal sclerite. Scale bar = 0.5 mm.

Fig. 16. Chimarra lehibemavo sp. nov., Chimarra tamara sp. nov., Chimarra gattolliati sp. nov. and Chimarra forcellinii sp. nov., schematic distribution map and ecological profile of the capture sites in Madagascar.

Fig. 1. Chimarra jejyorum sp. nov., right wings. Scale bar = 2 mm.

Fig. 3. Chimarra cebegepi sp. nov. A–B. Abdominal segments IX and X. A. Lateral view. B. Dorsal view (partim). C. Inferior appendage, dorsal view. D–E. Phallic apparatus. D. Dorsal view. E. Lateral view. Scale bar = 0.5 mm.

Fig. 13. Chimarra saha sp. nov. A–B. Abdominal segments IX and X. A. Lateral view with ventral margin of sternite VIII. B. Dorsal view (partim). C. Inferior appendage, dorsal view. D–E. Phallic apparatus. D. Dorsal view. E. Lateral view. Scale bar = 0.5 mm.