Chimarra koualeensis, Johanson, Kjell Arne & Mary, Nathalie, 2009

Johanson, Kjell Arne & Mary, Nathalie, 2009, Description of three new caddisfly species from Mayotte Island, Comoros Archipelago (Insecta: Trichoptera), Zootaxa 2089, pp. 1-9 : 6-7

publication ID

https://doi.org/ 10.5281/zenodo.187447

DOI

https://doi.org/10.5281/zenodo.6224068

persistent identifier

https://treatment.plazi.org/id/6E188799-217B-FFC8-ADDB-FC37FB7700A4

treatment provided by

Plazi

scientific name

Chimarra koualeensis
status

sp. nov.

Chimarra koualeensis , new species

Figs. 9–12 View FIGURES 9 – 12

Diagnosis. This species is separable from other Afrotropical Chimarra species by a combination of characters in the genitalia: in the lateral view by possessing anteriorly a strongly produced and tapering sternite IX; presence of a narrow, projecting ventral process at the posterior margin of sternite IX; in dorsal view by the unique shape of segment X; the presence of slender, median processes of inferior appendages directed mesad; and bilobed posterior margins of the inferior appendages. The species resembles C. bertrandi Scott, 1974 , from Zimbabwe; C. callasae Gibon, 1982 , from Mali; and C. sassandrae Gibon, 1982 , from West Africa, from which it is separated by the above characters.

Description. Male genitalia: Sternite IX strongly produced and tapering anterad in lateral view ( Fig. 9 View FIGURES 9 – 12 ); anterior margin uniformly concavely rounded; segment narrow and nearly parallel-sided dorsally, with minute dorsal apodeme; posterior margin nearly straight; ventral process present posteriorly on sternite IX ( Figs. 9, 11 View FIGURES 9 – 12 ); sternite in ventral view ( Fig. 11 View FIGURES 9 – 12 ) with weakly concave anterior and posterior margins; in dorsal view anterior margins shallowly concave ( Fig. 10 View FIGURES 9 – 12 ). Segment X forming pair of short, depressed, plate-like processes; in lateral view nearly straight with rounded apices ( Fig. 9 View FIGURES 9 – 12 ), each with small, subapical thorn-like process; in dorsal view uniformly curving laterad ( Fig. 10 View FIGURES 9 – 12 ); each process with apex pointing laterad, lateral tooth present at midlength ( Fig. 10 View FIGURES 9 – 12 ); cleft between processes V-shaped. Preanal appendages directed posterodorsad ( Figs. 9–10 View FIGURES 9 – 12 ), short, slightly club-shaped; covered by setae. Inferior appendages nearly rectangular in lateral view, apicodorsal corner slightly produced dorsad into rounded lobe ( Fig. 9 View FIGURES 9 – 12 ); posterior margin weakly incised at mid-height; in ventral view ( Fig. 11 View FIGURES 9 – 12 ) inferior appendages slightly diverging; each inferior appendage with smooth, cylindrical, median process basally directed posterad before sharply curving mesad, apices exceeding median margins of inferior appendages ( Fig. 11 View FIGURES 9 – 12 ). Phallus ( Fig. 12 View FIGURES 9 – 12 ) long, slender; dorsal margin uniformly convex; border between phallotheca and endotheca invisible; phallobase shallow, long; single endothecal spine present at left side of apex.

Holotype (male): MAYOTTE: Koualé river, affluent forêt 1 (DAF-19), 12°47’57.84’’S, 45°09’51.77’’E, 201 m, 18.v.2006. Abdomen slide mounted in Euparal, rest of body in alcohol ( MNHN).

Paratypes: Same data as holotype — 2 pupae (in alcohol, NRM).

Distribution. Comoros Archipelago.

Etymology. koualeensis , named after the type locality, Koualé on Mayotte Island.

MNHN

Museum National d'Histoire Naturelle

NRM

Swedish Museum of Natural History - Zoological Collections

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Trichoptera

Family

Philopotamidae

Genus

Chimarra

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