Chimarra cakaudrovensis 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 cakaudrovensis

description: 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.
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 38-40, DOI: 10.5281/zenodo.210736