Chimarra cakaudrovensis, 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 : 38-40

Chimarra cakaudrovensis , new species

Figs. 21 , 111–116

The genitalia of this species, particularly the gonopods, resemble those of C. helomyzida , C. kimminsi , C. cartwrighti , C. lavensis , C. devoensis , C. manni , C. devoensis , C. tipulida , and C. vanuensis . It is easily distinguished from C. lavensis , C. devoensis and C. vanuensis by the absence of prominent dorsad-oriented processes from the lateral lobes of tergum X; from C. kimminsi , C. helomyzida , C. tipulida and C. cartwrighti by the presence of 2 pairs of endothecal spines (not1 pair); and from C. manni by its strongly anterad produced segment IX. Tergum X somewhat resembles that of C. cartwrighti and C. manni , but the angle between the dorsal and ventral branches is much wider than in those 2 species, and the dorsal branches are more membranous than in C. manni .

Male. Head and thorax dark brown, dorsal part of meso- and metathorax slightly darker brown than rest of thorax. Area between ocelli nearly black. Foreleg anterior claw as long as foreleg spur.

Wings ( Fig. 21 ). Forewings 5.0 mm (n=1), brown. Forewings broad, ratio of length to breadth 3.2; R1 slightly curved 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 as long as discoidal cell; crossvein r originating on 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 /5th as long as wing; fork V slightly shorter than fork II; Cu2 ending in wing margin well separated from A. Hind wings 4.0 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 originating slightly before anterodistal corner of discoidal cell; fork III as long as discoidal cell and 1/7th as long as wing; fork V as long as fork I; 1A+2A about 3x as long as 1A.

Male genitalia ( Figs. 111–116 ). Segment IX longer than high, nearly boomerang-shaped in lateral view; anterodorsal margins slightly produced anterad, ventrum strongly produced anterad into triangular plate in lateral view; ventral margins irregularly convex; anterodorsal margin deeply concave; each posterior margin convex; segment IX ventrally with with setae restricted to row before posterior margin ( Fig. 113 ). Dorsal part of segment IX nearly straight in lateral view, central part membranous in dorsal view; anterior margin invisible in dorsal view. In ventral view segment IX with almost parallel lateral, undulating margins, anterior and posterior margin shallowly concave; posterior margin without central projection. Tergum X short, divided into pair of lateral branches; in lateral view each lateral branch with small dorsal rounded lobe, and tube-shaped, nearly straight ventral branch with 2 apical sensillae. In dorsal and ventral view, ventral processes oriented mesad, crossing. Cerci located immediately below tergum X; wart-like in lateral and dorsal view, darkly pigmented; covered by long setae. Gonopods about as long as height of segment IX; nearly triangular in lateral view, basal 1/2 narrowing in lateral view; distal 1/2 nearly parallel-sided; each gonopod unbranched in lateral view; with well-developed dorsomesal lobe and ventromesal lobe of mesal process in ventral view. Anterodorsal margin of each gonopod nearly straight, smooth; posteroventral margin of basal 1/2 with strongly expanded setal bases, distal 1/2 with shorter setal bases; ventral margin strongly convex; apical margin armed with small megasetae. In ventral view, gonopods broad at base, forming rounded lobes with undulating margins; gonopods slightly curved mesad toward rounded apex. Mesal branch of each gonopod divided into well-developed ventromesal and dorsomesal lobe; ventromesal lobe edged, darkly pigmented, covered by minute setae; dorsomesal lobe strongly curved ventrad, with pointed apex. Phallic apparatus about 1.5x longer than rest of genitalia, straight along its length, except slightly curved ventrad at posterior apex; phallotheca, in lateral view about 3x thicker than posterior part; in ventral view about 2x thicker than posterior part; apicoventral spine absent; phallotremal sclerite small, 2-rayed, pointing posterad; 2 pairs nearly black, long, posterad and anterad directed endothecal spines present, about as long as diameter of narrowest part of phallotheca; endothecal spicules absent.

Female. Unknown.

Holotype male: TAVEUNI: Cakaudrove Prov., Devo Forest Reserve, Malaise trap, 3–10.i.2003, 16°50’S, 179°59’E [16.8333°S, 179.9833°E], 800 m, leg. M. Irwin, E. Schlinger & M. Tokota’a [loc#37] [ FNIC].

Paratypes: same data as holotype [loc#37] [ NHRS] — 11 males. Same data as holotype, except 10–16.i.2003 [loc#37] — 9 males [ BPBM]. Cakadrove Prov., Davo Peak Radio Tower, Malaise trap in rainforest, 13–20.xii.2002, 16°51’S, 179°58’E [16.8500°S, 179.9667°E], 1200 m, leg. M. Irwin, E. Schlinger & M. Tokota’a [loc#36] — 9 males [ BPBM]. Same data, except 25.ix–7.x.2002 [loc#36] — 1 male [ BPBM]. Same data, except 10–17.x.2002 [loc#36] — 2 males [ BPBM]. Same data, except 31.x–21.xi.2002 [loc#36] — 1 male [ BPBM]. VITI LEVU: 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] — 2 males [ NHRS]. Vuda Prov., Koroyanitu Pk., 1 km E Abaca Vlg., Malaise trap 1, 12–19.xi.2002, 17.667°S, 177.55°E, 800 m, leg. E. Schlinger & M. Tokota’a [loc#03] — 1 male [ NHRS, DNA voucher IM4]. Same data, except 19–26.xi.2002 [loc#03] — 1 male [ BPBM]. Same data, except 22.iv–5.v.2003 [loc#03] — 10 male [ BPBM]. Naitasiri Prov., 3.2 km E Navai Vlg., Veilaselase Track, Malaise trap 2, 18–25.x.2004, 17.624°S, 178.009°E, 1020 m, leg. E. Schlinger & M. Tokota’a [loc#15] — 1 male [ FNIC]. Rewa Prov., 3.8 km N Veisari, Waivudava Log Rd., Malaise trap, 25.iv–25.v.2003, 18.0792°S, 178.3625°E, 300 m, leg. E. Schlinger & M. Tokota’a [loc#16] — 1 male [ NHRS].

Etymology: Cakaudrovensis , after Cakaudrove Province on Taveuni, the type locality of the species. Distribution: Taveuni and 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 111 – 116. Chimarra cakaudrovensis, new species, holotype. 111 — genitalia, left lateral view; 112 — genitalia, dorsal view; 113 — genitalia, ventral view; 114 — gonopods, caudal view; 115 — phallic apparatus, left lateral view; 116 — phallic apparatus, ventral view.