Chimarra cebegepi, 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 : 6-8

Chimarra cebegepi sp. nov.

urn:lsid:zoobank.org:act:F5486868-6EBC-46F2-97C8-9AE3A893C8B7

Figs 3 , 17

Diagnosis

Together with C. lehibemavo sp. nov. and C. saha sp. nov., Chimarra cebegepi sp. nov. forms a subgroup of three closely related species. C. lehibemavo sp. nov. is characterized by the short internal sclerite of the phallic apparatus ( Fig. 2 D–E), this latter is long and apically curved in the other two species. C. cebegepi sp. nov. differs from C. saha sp. nov. by the distal margin of the inferior appendage slightly concave and regularly rounded in lateral view ( Fig. 3A ). Moreover C. saha sp. nov. is characterized by the lateral deflection of the dorsal lamina of the phallotheca ( Fig. 13E ), which is more developed than in C. cebegepi sp. nov. ( Fig. 3E ).

Etymology

The name is designed from the acronym of the Centre de Biologie pour la Gestion des Populations.

Type material

Holotype

MADAGASCAR: ♂, mounted on 7 slides, camp I of the WWF expedition to the Marojejy National Park , 14°26′02″ S, 49°46′20″ E, 450 m, 13 Oct. 1996, leg. D. Randriamasimanana and J. Legrand.

Paratypes

MADAGASCAR: 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; 6 ♂♂, in alcohol, camp I of the WWF expedition to the Marojejy National Park, 14°26′13″ S, 49°46′17″ E, 460 m, 12 Oct. 1996, leg. D. Randriamasimanana and J. Legrand.

Description

SIZE. Forewing 8.5 mm, hind wing 6.8 mm.

TERGUM X. Lateral lobes not as deeply divided as in C. lehibemavo sp. nov., dorsal branch longer than ventral one (lateral view).

INFERIOR APPENDAGES. Dorsal branch elongate, regularly narrowing; ventral branch short; internal lobe constituted by six small indentations ( Fig. 3C ); distal margin concave and regularly rounded in lateral view ( Fig. 3A ).

PHALLIC APPARATUS. Phallotheca split from mid-length in two asymmetrical laminas of equivalent length; internal sclerite long (longer than the laminas of the phallotheca) with curved apex and, before midlength, short and triangular protuberance ( Fig. 3D ); phallotremal sclerite present with two lateral, hookshaped elements.

Distribution

Madagascar (endemic), Marojejy National Park.

Figures

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. 17. Chimarra fotobohitra sp. nov., Chimarra saha sp. nov., Chimarra hamatra sp. nov., Chimarra moramanga sp. nov. and Chimarra cebegepi sp. nov., schematic distribution map and ecological profile of the capture sites in Madagascar.

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. 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.