Chimarra tokotaai, 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 : 26-28

Chimarra tokotaai , new species

Figs. 14 , 75–79

Chimarra tokotaai is similar to C. vuda and C. naitasirensis 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 a group of minute, strongly sclerotized spicules. Chimarra tokotaai is distinguished from the other 2 species by having apically narrowed gonopods; a phallotremal sclerite that is 3x longer than the width of the posterior part of phallotheca; and the presence of only 1 group of sclerotized spicules in the phallic endotheca.

Male. Body dark pale brown, dorsal part of meso- and metathorax only slightly darker than rest of body. Large dark area between lateral and anterior ocelli. Foreleg anterior claw as long as foreleg spur.

Wing s ( Fig. 14 ). Forewings 4.2 mm (n=1), brown; broad, ratio of length to breadth 3.3; R1 slightly curved before crossvein r; radial sector slightly produced anterad immediately before discoidal cell; discoidal cell originating slightly distally of mid-length of wing, nearly 3x longer than wide; median cell slightly shorter than discoidal cell; crossvein r originating from R2+3, immediately before fork I; fork I originating before crossvein s at distance equal to 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 tangential with 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 as long as discoidal cell and 1/7th as long as wing; fork V about as long as fork I; 1A+2A 4x longer than 1A.

Male genitalia ( Figs. 75–79 ). Segment IX slightly shorter than high; each anterodorsal margin shallowly concave in lateral view; each ventral margin strongly convex; each posterior margin produced posterad into large, triangular lobe starting at mid-height of cercus; ventral side of posterior 1/2 of segment IX with scattered setae (ventral view). In dorsal view with narrow anterior lobes; anterodorsal margin with wide, deep incision in dorsal view. In ventral view segment IX with shallowly concave anterior margin and moderately deep, and widely Ushaped posterior margin; posterior margin without central projection. Tergum X simple; tapering apically in lateral view ( Fig. 75 ); orienting posteroventrad, nearly straight; divided into 2 slightly mesad-curved, lateral branches from base in dorsal and ventral view ( Figs. 76, 77 ); each branch slightly narrowing posteriorly in dorsal and ventral view, apically rounded, without processes; sensillae invisible. Cerci large, broad, located immediately below dorsal margin of segment IX and tergum X and oriented posterad in lateral view; very short in dorsal view; covered by long setae. Gonopodsunbranched, about as long as segment IX, curved dorsad and sickle-shaped in lateral view; anterodorsal margin concave; ventral margin nearly straight; posteroventral corner slightly produced into strongly sclerotized minute tooth; in ventral view forming broad plates widening posteriorly, each with strongly sclerotized apicomesal tooth; each mesal margin nearly straight, weakly undulating. Phallic apparatus nearly 2x longer than rest of genitalia: phallotheca, in lateral and ventral view, with anterior part 2– 3 x thicker than posterior part; apicoventral spine absent on phallotheca; strongly enlarged phallotremal sclerite in phallic apparatus forming paired rays and about 1/2 as long as phallic apparatus; large endothecal spines absent; endotheca with1 group of minute, strongly sclerotized, well separated spicules.

Female. Unknown.

Holotype male: VITI LEVU: Vuda Prov., Koroyanitu N.N.P. Kokabula Trail, Malaise trap, 26.x–5.xi.2002, 17°40’S, 177°33’E [17.3333°S, 177.55°E], 400 m, leg. M. Irwin, E. Schlinger & M. Tokota'a [loc#01] [ FNIC].

Paratypes: Same data as holotype, except 6–26.v.2003 [loc#01] — 2 males [ NHRS]. Vuda Prov., Koroyanitu N.M.P. Abaca Village, Malaise trap, 6–26.v.2003, 17°40’S, 177°33’E [17.3333°S, 177.55°E], 400 m, leg. M. Irwin, E. Schlinger & M. Tokota'a [loc#01] — 7 males [ BPBM]. Vuda Prov., Koroyanitu Pk., 1 km E Abaca Vlg., Savuione Trail, Malaise trap, 21.ix–7.x.2002, 17.667°S, 177.55°E, 800 m, M. Irwin, E. Schlinger & M. Tokota’a [loc#03] — 3 males [ BPBM]. Same data, except 7–12.x.2002 [loc#03] — 3 males [ BPBM]. Same data, except 12–19.x.2002, M. Irwin, E. Schlinger & M. Tokota’a [loc#03] — 8 males [ NHRS]. Same data, except 19–26.x.2002 [loc#03] — 3 males [ BPBM]. Same data, except 26.x–5.xi.2002 [loc#03] — 5 males [ BPBM]. Same data, except 26.xi–3.xii.2002, E. Schlinger & M. Tokota’a [loc#03] — 9 males [ FNIC]. Same data, except 10–17.xii.2002 [loc#03] — 2 males [ BPBM]. Same data, except 11–19.iii.2003 [loc#03] — 3 males [ NHRS]. Vuda Prov., Koroyanitu Pk., 1 km E Abaca Vlg., Kokabula Trail, Malaise trap, 2–10.vi.2003, 17.667°S, 177.55°E, 800 m, leg. M. Tokota’a [loc#05] — 2 males [ BPBM]. Vuda Prov., Koroyanitu Pk., 0.5 km N Abaca Vlg., Malaise trap 1, 26.x–5.xi.2002, 17.667°S, 177.55°E, 800 m, leg. E. Schlinger & M. Tokota’a [loc#06] — 3 males [ BPBM]. Naitasiri Prov., Sovi Basin, Wainivalau, Malaise trap, 8–15.v.2003, 17°54’S, 178°14’E [17.9000°S, 178.2300°E], 300 m, leg. M. Irwin, E. Schlinger & M. Tokota’a [loc#07] — 1 male [ BPBM]. Naitasiri Prov., 1.8 km E Navai Vlg., old trail to Tomaniivi, Malaise trap 4, 9–20.xii.2003, 17.521°S, 177.998°E, 700 m, leg. E. Schlinger, M. Irwin & M. Tokota’a [loc#08] — 1 male [ FNIC]. Naitasiri Prov., Eteni, Navai, Malaise trap, 6.vi–15.vii.2003, 17°37’S, 177°59’E [17.6167°S, 177.9833°E], 700 m, leg. E. Schlinger, M. Irwin & M. Tokota’a [loc#09] — 3 males [ NHRS]. Same data, except 13–18.ii.2004 [loc#09] — 1 male [ BPBM].

Etymology: Tokotaai , named after Dr. M. Tokota’a, one of the collectors of the holotype.

Distribution: Viti Levu.

Figures

FIGURES 14 – 21. Right wings, dorsal views. 14 — C. tokotaai, new species, holotype; 15 — C. vuda, new species, holotype; 16 — C. naitasirensis, new species, holotype; 17 — C. veisarensis, new species, holotype; 18 — C. fijiana, new species, holotype; 19 — C. abacensis, new species, holotype; 20 — C. manni Banks, non-type; 21 — C. cakaudrovensis, new species, holotype.

FIGURES 75 – 79. Chimarra tokotaai, new species, holotype. 75 — genitalia, left lateral view; 76 — genitalia, dorsal view; 77 — genitalia, ventral view; 78 — phallic apparatus, left lateral view; 79 — phallic apparatus, ventral view.