Chimarra manni Banks

Johanson, Kjell Arne & Oláh, János, 2012, Revision of the Fijian Chimarra (Trichoptera, Philopotamidae) with description of 24 new species, Zootaxa 3354, pp. 1-58 : 36-38

Chimarra manni Banks

Figs. 20 , 33 , 105 –110

Chimarrha manni Banks, 1924: 448 .

Chimarra indigota Mosely, 1941: 361 , new synonym.

The genitalia of this species, particularly the gonopods, resemble those of C. helomyzida , C. kimminsi , C. cartwrighti , C. lavensis , C. devoensis , C. cakaudrovensis , C. devoensis , C. malaisei , and C. vanuensis . It is easily distinguished from C. kimminsi , C. helomyzida , C. tipulida and C. cartwrighti by the presence of 2 pairs of endothecal spines (not 1 pair); from C. lavensis , C. devoensis , and C. vanuensis by the absence of a prominent dorsad-oriented process on each of the lateral lobes of tergum X; and from C. cakaudrovensis by its shorter segment IX and more prominent dorsal branches of tergum X.

Male. Body ( Fig. 33 ): 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. 20 ). Forewings 6.4 mm (lectotype), dark brown, iridescent. Forewings broad, ratio of length to breadth 3.0; R1 weakly undulating before crossvein r; radial sector not produced anterad immediately before discoidal cell; discoidal cell originating distally of mid-length of wing, 2.5x longer than wide; median cell slightly longer than discoidal cell; crossvein r originating from basis of R2; fork I originating immediately before crossvein s at distance equal to 1/5th 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 II; Cu2 ending in wing margin well separated from A. Hind wings 5.3 mm (lectotype), brown, iridescent; ratio of length to breadth 2.8; margin weakly incurved at arculus, where Cu1 and Cu2 fused with margin; fork I originating from anterodistal corner of discoidal cell; fork III slightly longer than discoidal cell and 1/7th as long as wing; fork V longer than fork I; 1A+2A about 4x as long as 1A.

Male genitalia ( Figs. 105–110 ). Segment IX nearly 1.2x taller than long; in lateral view each side produced anterad into rectangular ventral plate and 1/2 as high triangular dorsal plate; ventral margins slightly convex, slightly constricted at vertical apodeme; anterodorsal margin with deep, U-shaped concavity; each posterior margin slightly convex; segment IX ventrally with with setae restricted to band at posterior 1/3rd ( Fig. 107 ). Dorsal part of segment IX irregular in lateral view, slightly membranous before tergum X. In dorsal view segment IX with long, narrow ventral plates; dorsal plates narrow, triangular; gap between dorsal plates oval. In ventral view segment IX narrowing strongly at mid-length at transverse apodeme, anterior margin shallowly triangular, posterior margin slightly concave. Tergum X short, divided into pair of lateral branches; in lateral view each lateral branch with broad dorsal, rounded lobe, and short, nearly straight, tube-shaped ventral branch, with 2 apical sensillae. Each ventral branch with ventrolaterad directed, sharply triangular lateral process situated at mid-length, near ventral margin. In dorsal and ventral view, ventral processes broad at basis; slender distally of lateral processes. Cerci located dorsally on posterior margin of segment IX, about at mid-height of tergum X; wart-like in lateral and dorsal view; with long setae. Gonopods nearly as long as height of segment IX; in lateral view broad basal 1/2, strongly expanded ventrally into rounded lobe, narrowing distally; distal 1/2 almost straight, nearly parallel-sided; each gonopod apparentlyunbranched in lateral view. In lateral view anterodorsal margin of each gonopod nearly straight, smooth; posteroventral margin undulating, with mesal megasetae on posterior margin of ventral lobe; apex with marginal, mesad oriented megasetae. In ventral view, gonopods slightly broader at base than at distal part, with nearly straight, slightly undulating posterior margins; gonopods slightly curved mesad toward rounded apex. Phallic apparatus longer than rest of genitalia (with expanded endotheca), straight along its length; narrowest at midlength in lateral view; in lateral view phallotheca about 2x thicker than narrowest posterior part; in ventral view about 2x thicker than posterior part; apicoventral spine absent; phallotremal sclerite with 4 posterior rays originating from anterior plate, central rays very thin, situated closely; 4 nearly black, variously directed endothecal spines present, all shorter than diameter of narrowest part of phallotheca; endothecal spicules absent.

Female. Unknown.

Lectotype male (here designated): “Fijis: Taviuni, Somo Somo. W. M. Mann ”; “ Type 14825”; “ Chimarrha manni Type Bks”. [no date]. Abdomen macerated, in glycerol in micro vial on same pin as rest of animal [MCZ].

Paralectotypes (here designated): same data as lectotype — 2 males.

Additional material examined: Type material of C. indigota (examined); TAVEUNI: Cakaudrove Prov., Mt. Koronibuabua, 3.2 km NW Lavena, Malaise trap, 4–18.i.2004, 16°51’16.9’’S, 179°53’26.2’’W [16.8547°S, 179.8906°W], 234 m, leg. E. Schlinger & M. Tokota’a [loc#41] — 11 males [ NHRS]. Same data, except Malaise trap in rainforest, 24.x–19.xi.2003, 16°51’28.3’’S, 179°53’43.5’’W [16.8579°S, 179.8954°W], 233 m, leg. M. Irwin, E. Schlinger & M. Tokota’a [loc#42] — 3 males [ FNIC]. Cakaudrove Prov., Lavena, Malaise trap, 4–19.xi.2003, 16°51.283’S, 179°53.370’W [16.8579°S, 179.8936°W], 212 m, leg. M. Irwin, E. Schlinger & M. Tokota’a [loc#43] — 1 male [ BPBM]. Same data, except 16°51.322’S, 179°53.338’W [16.8553°S, 179.8890°W], 213 m [loc#40] — 1 male [ BPBM]. Cakaudrove Prov., Soqulu House in Soqulu Estate, Malaise trap 1, 27.xii.2002 – 3.i.2003, 16.833°S, 180°E, 140 m, leg. E. Schlinger & M. Tokota’a [loc#44] — 2 males [ FNIC]. VANUA LEVU : 0.3 km S Rokosalase Village, Malaise trap 1, 28.ix–15.xi.2004, 16.531°S, 179.019°E, 94 m, leg. I. Sakealevu [loc#30] — 2 males [ BPBM]. Macuata Prov., Dogotuki, 2.5 km E Nasavu River, Malaise trap, 7.vii.2003, 16.2519°S, 179.7833°E, 226 m, leg. M. Irwin, E. Schlinger & M. Tokota’a [loc#28] — 1 male [ BPBM]. Macuata Prov., Rokosalase, Malaise trap in forest, 8–21.vi.2004, 16°31.891’S, 179°01.147’E [16.5315°S, 179.0192°E], 105 m, leg. M. Irwin, E. Schlinger & M. Tokota’a [loc#27] — 1 male [ BPBM]. Macuata Prov., 0.4 km S Rokosalase Village, Malaise trap in forest, 23.iv–8.v.2004, 16.532°S, 179.019°E, 118 m, leg. E. Schlinger & M. Tokota’a [loc#31] — 7 males [ BPBM]. Macuata Prov., 0.6 km S Rokosalase Village, Malaise trap in forest, 23.iv–8.v.2004, 16.5333°S, 179.0181°E, 180 m, leg. E. Schlinger & M. Tokota’a [loc#26] 1 male [ NHRS].

Distribution: Taveuni and Vanua 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 32 – 34. Type specimens of Chimarra described by Banks. 32 — C. signata Banks, 1936, holotype; 33 — C. manni Banks, 1924, lectotype; 34 — C. obscurella Banks, 1924, holotype.

FIGURES 105 – 110. Chimarra manni Banks, 1924, lectotype. 105 — genitalia, left lateral view; 106 — genitalia, dorsal view; 107 — genitalia, ventral view; 108 — gonopods, caudal view; 109 — phallic apparatus, left lateral view; 110 — phallic apparatus, ventral view.