Chimarra naitasirensis Johanson & Oláh, 2012, new species
Creators: name: Johanson, Kjell Arne
name: Oláh, János
Publisher: name: Zenodo
Year: 2012
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Trichoptera
Philopotamidae
Chimarra
Chimarra naitasirensis

description: Chimarra naitasirensis, new species
Figs. 16, 85–89
Chimarra naitasirensis is similar to C. tokotaai and C. vuda in the presence of simple, dorsad-curved gonopods; a strongly enlarged phallotremal sclerite in the phallic apparatus; absence of large endothecal spines; and an endotheca with group of minute, strongly sclerotized spicules. Chimarra naitasirensis is distinguished from the other 2 species by having nearly drop-shaped gonopods in lateral view; a phallotremal sclerite that is about as long as the width of the posterior part of phallotheca; and by the presence of 3 groups of sclerotized spicules in the phallic endotheca.
Male. Body pale brown, dorsal part of meso- and metathorax brown. Large dark area between lateral and anterior ocelli. Foreleg anterior claw as long as foreleg spur.
Wings (Fig. 16). Forewings 4.5 mm (n=1), brown; broad, ratio of length to breadth 3.3; R1 nearly straight before crossvein r; radial sector slightly produced anterad immediately before discoidal cell; discoidal cell originating at mid-length of wing, about 3x longer than wide; median cell slightly longer than discoidal cell; crossvein r situated basally of fork I by length of crossvein r; fork I originating before crossvein s at distance equal to 1/2 length of crossvein s; nygma located near base of fork II; fork III 1 /6th as long as wing; fork V longer than fork I, shorter than fork II; Cu2 situated close to A at wing margin. Hind wings 3.4 mm (n=1), brown; broad, ratio of length to breadth 3.0; margin slightly incurved at arculus, where Cu1 and Cu2 fused with margin; fork III slightly longer than discoidal cell and 1/8th as long as wing; fork V nearly as long as fork I; 1A+2A 4x longer than 1A.
Male genitalia (Figs. 85–89). Segment IX about as long as high; parallelogram-shaped diagonal; each anterodorsal margin nearly straight in lateral view; each ventral margin convex, with strong incision at vertical apodeme; each posterior margin strongly produced posterad into sharply triangular lobe starting at top of cercus; ventral side of posterior 1/3rd of segment IX with setae (Fig. 87). In dorsal view with narrow anterior lobes; anterodorsal margin forming deep U-shaped incision in dorsal view. In ventral view segment IX with shallowly triangular anterior margin and deeply U-shaped posterior margin; posterior margin without central projection. Tergum X simple; tapering apically in lateral view (Fig. 85); orienting posteroventrad, nearly straight; divided into 2 lateral branches from base in dorsal and ventral view (Figs. 86, 87); each branch uniformly narrowing posteriorly in dorsal and ventral view, apically pointed, without processes; sensillae invisible. Cerci large, broad, located immediately below dorsal margin of segment IX and tergum X and oriented posterodorsad in lateral view; sharply triangular in dorsal view; covered by long setae. Gonopodsunbranched, about as long as segment IX, uniformly curved dorsad, almost drop-shaped in lateral view; anterodorsal margin nearly straight; ventral margin uniformly convex; posteroventral corner not produced into tooth in lateral view; in ventral view forming broad plates with uniformly convex lateral margins; mesal margins diverging, except with large, 1/2-circular lobes at mid-length; tapering from 1/2-length into rounded, slightly mesad-curved apex. Phallic apparatus slightly longer than rest of genitalia: phallotheca, in lateral view, with anterior part slightly more than 3x thicker than posterior part; and ventral view anterior part about 2x wider than posterior part; apicoventral spine absent on phallotheca; strongly enlarged phallotremal sclerite in phallic apparatus forming complicated structure nearly 1/3rd as long as phallic apparatus; large endothecal spines absent; endotheca with 3 groups of minute, strongly sclerotized, well separated spicules; all groups densely packed in lateral view, more scattered in ventral view; anteriormost group located ventrally of posterior part of phallotremal sclerite; posterior 2 groups in longitudinal line with anterior group.
Female. Unknown.
Holotype male: VITI LEVU: Naitasiri Prov., Nakobalevu Mt., 24–29.x.2003, 18°03’S, 178°25’E [18.0500°S, 178.4167°E], 340 m, M. Irwin, E. Schlinger & M. Tokota’a [loc#10] [FNIC].
Paratypes: S ame data as holotype [loc#10] — 2 males [NHRS]. Vuda Prov., Koroyanitu Pk., 1 km E Abaca Vlg., Malaise trap 1, 22.iv–5.v.2003, 17.667°S, 177.55°E, 800 m, leg. E. Schlinger & M. Tokota’a [loc#03] — 2 males [BPBM]. Vuda Prov., Koroyanitu Pk., 1 km E Abaca Vlg., Savuione Trail, Malaise trap, 7–12.x.2002, 17.667°S, 177.55°E, 800 m, leg. M. Irwin, E. Schlinger & M. Tokota’a [loc#03] — 1 male [BPBM]. Same data, except 21.ix–7.x.2002 [loc#03] — 2 males [FNIC].
Etymology: Naitasirensis, named after the Naitasiri Province, the type locality of the species. Distribution: Viti Levu.
description: Published as part of Johanson, Kjell Arne & Oláh, János, 2012, Revision of the Fijian Chimarra (Trichoptera, Philopotamidae) with description of 24 new species, pp. 1-58 in Zootaxa 3354 on pages 30-31, DOI: 10.5281/zenodo.210736