Chimarra fijiana 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 fijiana

description: Chimarra fijiana, new species
Figs. 18, 95–99
The genitalia of C. fijiana are unique among the Fijian Chimarra in having both the ventral branch and the distal part of each gonopod angled posteriorly at 90°, and both apices of the gonopods with apical megasetae.
Male. Body dark pale yellowish-brown, dorsal part of meso and metathorax slightly darker than rest of body. Large dark area between lateral ocelli. Foreleg anterior claw as long as foreleg spur.
Wings (Fig. 18). Forewings 5.4 mm (n=1), brown; Forewings broad, ratio of length to breadth 3.4; R1 slightly curved before crossvein r; radial sector not produced anterad immediately before discoidal cell; discoidal cell originating slightly before mid-length of wing, about 3x longer than wide; median cell as long as discoidal cell; crossvein r originating from basal part of R2; fork I originating before crossvein s at distance equal to length of crossvein s; nygma located near base of fork II; fork III1 /4 as long as wing; fork V slightly shorter than fork II; Cu2 ending in wing margin close to A. Hind wings 4.3 mm (n=1), brown; ratio of length to breadth 3.0; margin weakly incurved at arculus, where Cu1 and Cu2 fused with margin; fork I sessile; fork III more than 2x longer than discoidal cell and1/4 as long as wing; fork V about as long as fork I; 1A+2A more than 3x longer than 1A.
Male genitalia (Figs. 95–99). Segment IX slightly taller than long; anterodorsal margins strongly concave in lateral view; ventral margins slightly convex; each posterior margin weakly produced posterad, starting immediately below each cercus, margin slightly undulating; dorsal part of segment IX produced anterad into triangular; ventral side of posterior 1/2 of segment IX covered by setae (Fig. 97). In dorsal view with pointed anterior lobes; anterodorsal plates widely separated by rectangular incision in dorsal view. In ventral view segment IX with shallowly concave anterior and posterior margins; posterior margin with very short central projection. Tergum X divided into dorsal and ventral branches. Dorsal branches of tergum X oriented vertically immediately posteriorly of segment IX, narrowing dorsally in lateral view; tapering apically in lateral view (Fig. 95); in dorsal view divided into pair of broad plates with pointed mesal and lateral corners (Fig. 96). Ventral branches of tergum X originating from lower part of dorsal branches, slender, finger-like, curved posterad in lateral and ventral view, with pair of sensillae located near apex of each branch. Cerci very short, wart-like; located dorsally on segment IX, near dorsal margin; covered by long setae. Gonopods shorter than segment IX, uniformly slender in lateral view; nearly Ushaped, with dorsal and ventral branch. Dorsal branch of each gonopod long, each with basal 2/3rds oriented nearly vertically, bent 90° posteriorly at apical 1/3rd; with 3 ventromesad orienting megasetae originating from ventromesal pocket at apex; ventral part of posterior margin of dorsal branch with large setal tubercles. Ventral branch of each gonopod strongly curved posterodorsad at base; with row of megasetae. Phallic apparatus slightly longer than rest of genitalia; phallotheca, in lateral and ventral view, with anterior part about 2x thicker than posterior part; posterior part narrowing distally in ventral view; posterior part with rounded ventral process in lateral view; apicoventral spine absent; phallotremal sclerite forming 3 longitudinal rays in ventral view; endothecal spines not observed.
Female. Unknown.
Holotype male: VITI LEVU: Vuda Prov., Koroyanitu Natural Heritage Park, Savuione Trail, Malaise trap, 12–19.x.2002, 17°40’S, 177°33’E, 450 m, M. Irwin, E. Schlinger & M. Tokota’a [loc#04] [FNIC].
Paratypes: S ame data as holotype [loc#04] — 9 males [NHRS]. Same data as holotype, except 21.ix–7.x.2002 [loc#04] — 2 males [BPBM]. Vuda Prov., Koroyanitu Pk., 1 km E Abaca Vlg., Savuione Trail, Malaise trap, 26.x–5.xi.2002, 17°40’S, 177°33’E [17.3333°S, 177.55°E], 800 m, leg. M. Irwin, E. Schlinger & M. Tokota’a [loc#03] — 1 male [BPBM]. Same data, except 12–19.xi.2002 [loc#03] — 1 male [BPBM]. Same data, except 11–19.iii.2003, 17.667°S, 177.55°E [loc#03] — 1 male [BPBM]. Same data, except 22.iv–5.v.2003 [loc#03] — 15 males [BPBM]. Same data, except Kokabula Trail, 2–10.vi.2003 [loc#05] — 3 males [NHRS]. Vuda Province, 1 km SW Vaturu Dam, Malaise trap 3, 2–14.vii.2004, 17.754°S, 177.665°E, 620 m, leg. E. I. Schlinger & M. Tokota’a [loc#17] — 1 male [FNIC]. Sigatoka Prov., Sigatoka Sand Dunes National Park, Malaise trap in coastal forest, 22.ix–8.x.2002, 18°10’S, 177°30’E [18.1667°S, 177.5000°E], 30 m, leg. M. Irwin, E. Schlinger & M. Tokota’a [loc#18] — 1 male [BPBM]. Naitasiri Prov., Bakobalevu Logging Road, Malaise trap, 17.iii–9.iv.2003, leg. E. Schlinger & M. Tokota’a [loc#19] — 1 male [NHRS].
Etymology: Fijiana, named Fiji, the type country 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 33-34, DOI: 10.5281/zenodo.210736