Chimarra braueri, Johanson, Kjell Arne & Oláh, János, 2012

Johanson, Kjell Arne & Oláh, János, 2012, Revision of the Fijian Chimarra (Trichoptera, Philopotamidae) with description of 24 new species, Zootaxa 3354, pp. 1-58 : 22-23

Chimarra braueri , new species

Figs. 11 , 60–64

Chimarra braueri resembles C. signata , C. schlingeri , C. nathani , and C. vitiensis in the presence of a large pale, hyaline spot on both the forewings and hind wings. The genitalia of C. braueri are unique in the shape of the gonopods, particularly the long, posterad oriented, tongue-shaped process.

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. 11 ). Forewings 4.6 mm (n=1), brown, with large, circular, pale hyaline spot centrally in wing, covering more than discoidal cell and median cell; relatively broad, ratio of length to breadth 3.4; R1 almost straight before crossvein r; radial sector produced anterad immediately before discoidal cell; discoidal cell originating at mid-length of wing, 2x longer than wide; median cell as long as discoidal cell; crossvein r situated at base of fork I; 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 as long as fork I, shorter than fork II; Cu2 well-separated from A at wing margin. Hind wings 3.7 mm (n=1), brown, with large, nearly circular pale hyaline spot covering more than discoidal cell and median cell; wings broad, ratio of length to breadth 3.2; fork I with footstalk about as long as crossvein s; wing margin slightly incurved at arculus, where Cu1 and Cu2 fused with margin; fork III slightly shorter than discoidal cell, and1/10th as long as wing; fork V as long as fork I; 1A+2A nearly 2x longer than 1A.

Male genitalia ( Figs. 60–64 ). Segment IX clearly shorter than high; anterodorsal and anteroventral apex of segment IX similarly 2-lobed in lateral view; anterior plate rectangular, oriented anteroventrad; posterior 1/2 of segment expanded dorsad and anterad; each anterodorsal margin deeply concave in lateral view; each ventral margin uniformly convex, without incision at vertical apodeme; each posterior margin expanded into sharply triangular plate at mid-height of segment, well below cercus. In dorsal view segment IX with long, slender anterior lobes; in dorsal view anterodorsal margin forming deep, narrow, U-shaped incision without anterad-orienting processes on posteromesal margins. In ventral view segment IX nearly quadrangular, except incised at transverse apodeme; anterior margin shallowly concave; posterior margin shallowly concave, with minute central projection. Tergum X divided into small dorsal and ventral branches, surrounding phallic apparatus. In lateral view dorsal and ventral margins of basal 3/4 parallel-sided, strongly narrowing into short, parallel-sided distal ventral branch. Pair of ventral branches of tergum X smooth, except pair of lateral sensillae on each side, near ventral margin. Cerci located well below dorsal margin of segment IX and tergum X; orienting dorsad in lateral view; sightly club-shaped and oriented posterad in dorsal view; covered by long setae. Gonopods rather slender along their length, slightly longer than segment IX, 4-branched. Each dorsal branch short, hook-shaped in lateral view, large and sharply triangular in dorsal view; long, tongue-shaped, posterad oriented lobe present immediately ventrally of dorsal branch, slightly curved mesad along its length; ventral brach minute, located at posteroventral edge of each gonopod, nearly triangular in lateral view, large and sharply triangular in ventral view; mesal branch hook-shaped, curved anteromesad in dorsal and ventral view. All gonopod branches clearly exceeding tergum X in lateral view. Phallic apparatus slightly longer than rest of genitalia, slightly curved ventrad along its length; phallotheca, in lateral and ventral view, with anterior part 1.5x thicker than posterior part; apicoventral spine absent on phallotheca; phallotremal sclerite not observed; 2 very long, slender, nearly black endothecal spines present, right spine slightly longer than left spine.

Female. Unknown.

Holotype male: VITI LEVU: Naitasiri Prov., Nakobalevu Mt., 24–29.x.2002, 18°03’S, 178°25’E [18.0500°S, 178.4167°E], 340 m, leg. M. Irwin, E. Schlinger & M. Tokota’a [loc#10] [ FNIC].

Paratypes: Same data as holotype, except 22.ix–9.x.2002 [loc#10] — 1 male [ NHRS, DNA voucher IL 6]. Naitasisri Prov., 4.8 km N Veisari Stlmt., Log Road to Waivudawa, Malaise trap 1, 12.xii.2002 – 3.i.2003, 18.075°S, 178.362°E, 300 m, leg. E. Schlinger & M. Tokota’a [loc#14] — 1 male [ BPBM]. Naitasiri Prov., 3.3 km N Veisari, logging rd. to Waivudava, Malaise trap, 8–31.iii.2003, 18.0592°S, 178.367°E, 300 m, leg. M. Tokota’a [loc#20] [ NHRS].

Etymology: Braueri , named after Friedrich Brauer, who described the first Trichoptera from Fiji. Distribution: Viti Levu.

Figures

FIGURES 6 – 13. Right wings, dorsal views. 6 — C. vanuensis, new species, holotype; 7 — C. macuatensis, new species, holotype; 8 — C. signata Banks, 1936, non-type; 9 — C. schlingeri, new species, holotype; 10 — C. nathani, new species, holotype; 11 — C. braueri, new species, holotype; 12 — C. vitiensis, new species, holotype; 13 — C. karoyanitensis, new species, holotype.

FIGURES 60 – 64. Chimarra braueri, new species, holotype. 60 — genitalia, left lateral view; 61 — genitalia, dorsal view; 62 — genitalia, ventral view; 63 — phallic apparatus, left lateral view; 64 — phallic apparatus, ventral view.