Chimarra fenoevo, 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 : 8-10

Chimarra fenoevo sp. nov.

urn:lsid:zoobank.org:act:F13971CA-B594-4FDF-9A4D-FB32EDE20E78

Figs 4 , 15

Diagnosis

Chimarra fenoevo sp. nov. is closely related to C. forcellinii sp. nov. These two species are characterized by the curved dorsal branches of tergum X ( Figs 4B , 5B ). They differ by the shape of the inferior appendages: triangular in C. fenoevo sp. nov. ( Fig. 4A ), whereas L-shaped in C. forcellinii sp. nov. ( Fig. 5A ).

Etymology

The name is that of the nearest city to the type locality.

Type material

Holotype

MADAGASCAR: ♂, mounted on 6 slides, tributary of the Manampanihy River near Fenoevo, 24°41′00″ S, 46°53′39″ E, 72 m, 15 Apr. 1992, leg. J.-M. Elouard.

Paratypes

MADAGASCAR: 1 ♂, mounted on 4 slides, same data as holotype; 3 ♂♂, in alcohol, same data as holotype; 3 ♂♂, Manambolo River, seven kilometres from Berohanga, 24°35′07″ S, 46°35′11″ E, 440 m, 5 Jun. 1994.

Other specimens

MADAGASCAR: 1 ♂, tributary of the Rianila River, road to Lakato, 48°21′50″ E, 19°03′30″ S, 1075 m, 12 Mar. 1993; 1 ♂, Namorona River, Ranomafana, 47°27′18″ E, 21°15′37″ S, 725 m, 13 Nov. 1993 and 16 Apr. 1994; 1 ♂, tributary of the Namorona River, Ranomafana, 47°25′57″ E, 21°15′00″ S, 875 m, 14 Nov. 1993; 1 ♂, Ambatoharanana River, Ranomafana, 47°27′34″ E, 21°15′15″ S, 800 m, 17 Apr. 1994; 1 ♂, Tamara River, 4 km from Ranomafana, 47°25′37″ E, 21°14′45″ S, 850 m, 17 Apr. 1994; 1 ♂, Ambatandrano River at Ambatandrano, 47°26′32″ E, 21°14′45″ S, 775 m, 17 Apr. 1994; 1 ♂, tributary of the Namorona River, 47°25′11″ E, 21°15′47″ S, 1225 m, 18 Apr. 1994; 1 ♂, tributary of the Betsiboka River, 5 km from Mahatsinjo, 47°00′52″ E, 17°46′30″ S, 950 m, 1 Dec. 1994; 1 ♂, tributary of the Ankeniheny River, Manjakatompo, 47°18′46″ E, 19°21′23″ S, 1700 m, 6 Mar. 1995; 1 ♂, Vakoho River, road to Lakato, 48°23′57″ E, 19°07′13″ S, 820 m, 20 Mar. 1995; 1 ♂, Sahatandra River, Ambodirina, 48°20′28″ E, 19°01′32″ S, 980 m, 21 Mar. 1995; 1 ♂, tributary of the Rianila River, road to Lakato, 48°21′38″ E, 19°03′07″ S, 1050 m, 21 Mar. 1995; 1 ♂, Bezavo River, Iloty, 46°36′32″ E, 24°38′10″ S, 525 m, 06 Jun. 1994; 1 ♂, Bezavo River, Berohanga, 46°36′07″ E, 24°38′57″ S, 550 m, 6 Jun. 1994; 1 ♂, Tamara River, 4 km from Ranomafana, 47°25′37″ E, 21°14′45″ S, 850 m, 24 May 1995; 1 ♂, Maintimbahatra, ferry road to Ankarimbelo, 47°19′46″ E, 22°07′32″ S, 480 m, 20 Jun. 1995; 1 ♂, Sakamalio, Andohahela, 46°40′56″ E, 24°32′07″ S, 750 m, 2 Feb. 1996; 1 ♂, Manambaroa River, 24 km from Amborompotsy, 46°23′55″ E, 20°37′10″ S, 1100 m, 24 May 1996; 1 ♂, tributary of the Tsiribihina River, Tambaro, 45°43′10″ E, 20°25′40″ S, 187 m, 25 May 1996; 1 ♂, Manantenina River, Marojejy Camp I of the WWF expedition to the National Park, 49°46′20″ E, 14°26′02″ S, 450 m, 4 Oct. 1996; 1 ♂, Tsaratango River, Tsaratango, 47°31′50″ E, 21°16′33″ S, 585 m, 8 Nov. 1996; 1 ♂, tributary of the Namorona River, near Ranomafana, 47°26′36″ E, 21°15′07″ S, 780 m, 6 Nov. 1996; 1 ♂, Tsaratango River, 47°31′35″ E, 21°16′20″ S, 537 m, 13 Nov. 1996; 1 ♂, tributary of the Rianila River, road to Lakato 48°21′48″ E, 19°02′40″ S, 1050 m, 22 Apr. 1997; 1 ♂, Camp I of the WWF expedition to the Marojejy National Park, 49°46′33″ E, 14°26′20″ S, 430 m, 17 Oct. 1996.

Description

SIZE. Forewing 8.3 mm, hind wing 6.6 mm.

TERGUM X. Ventral branch short, directed ventrally; dorsal branch elongated and curved ventrally, apices crossing in dorsal view.

INFERIOR APPENDAGES. Triangular, hypotenuse sinuous, with half a dozen of small lobes (lateral view), internal lobe large, very apparent on the dorsal view ( Fig. 4C ).

PHALLIC APPARATUS. Distal part of dorsal lamina widened and rounded, ventral lamina digitiform, slightly longer than dorsal lamina; internal sclerite short with a rough surface and a small lateral extension ( Fig. 4D ); phallotremal sclerite relatively small and thin.

Distribution

Madagascar (endemic), quite widely distributed.

Figures

Fig. 4. Chimarra fenoevo sp. nov. A–B. Abdominal segments IX and X. A. Lateral view. B. Dorsal view. C. Inferior appendage, dorsal view. D–E. Phallic apparatus. D. Dorsal view. E. Lateral view. Scale bar = 0.5 mm.

Fig. 15. Chimarra fenoevo sp. nov., schematic distribution map and ecological profile of the capture sites in Madagascar.

Fig. 5. Chimarra forcellinii sp. nov. A–B. Abdominal segments IX and X. A. Lateral view. B. Dorsal view. C. Inferior appendage, dorsal view. D–E. Apex of the phallic apparatus. D. Dorsal view. E. Lateral view. Scale bar = 0.5 mm.