Chimarra schlingeri, 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 : 19-20

Chimarra schlingeri , new species

Figs. 9 , 50–54

Chimarra schlingeri has gonopods each with a small but distinct dorsal branch, as in C. signata , C. karoyanitensis , C. macuatensis , C. veisarensis , C. nathani , C. levuensis , and C. braueri . Among these, a large transparent spot located centrally in the forewings, as in C. schlingeri , is also present in C. macuatensis , C. signata , C. nathani , C. braueri , and C. vitiensis . It is easily distinguished from all those species by having a segment IX that is longer than high in lateral view; from C. veisarensis and C. levuensis by the presence of a large transparent spot centrally in the forewings; from C. levuensis , C. nathani , and C. veisarensis by the presence of a strongly hooked dorsal branch of each gonopod; and from C. braueri by the absence of a long, tongue-shaped process immediately below the dorsal branches of the gonopods.

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

Wings ( Fig. 9 ). Forewings 6.2 mm (n=1), brown; large pale, hyaline, nearly circular spot occupying central part of wing, including median cell and basal third of discoidal cell. Forewings broad, ratio of length to breadth 3.3; R1 nearly straight before crossvein r; radial sector strongly produced anterad immediately before discoidal cell; discoidal cell originating at mid-length of wing, about 2x longer than wide; median cell as long as 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 /5th as long as wing; fork V about as long as fork II; Cu2 ending in wing margin close to A. Hind wings 5.2 mm (n=1), brown, with large, nearly circular pale hyaline spot centrally on anterior 1/2 of wings, occupying basal 1/2 of discoidal cell; broad, ratio of length to breadth 2.9; margin slightly incurved at arculus, where Cu1 and Cu2 fused with margin; fork III as long as discoidal cell and 1/8th as long as wing; fork V about as long as fork I; 1A+2A as long as 1A.

Male genitalia ( Figs. 50–54 ). Segment IX slightly longer than high; anterodorsal margins strongly concave in lateral view; ventral margins slightly convex; each posterior margin produced posterad into large, rounded lobe below each cercus; ventral side of posterior 1/2 of segment IX covered by setae ( Fig. 52 ). In dorsal view with pointed anterior lobes; anterodorsal margin with wide, shallow incision in dorsal view. In ventral view segment IX with shallowly concave anterior and posterior margins; posterior margin without central projection. Tergum X simple; tapering apically in lateral view ( Fig. 50 ); distal 1/2 divided into 2 parallel branches in dorsal and ventral view ( Fig. 52 ); each distal branch nearly parallel-sided in dorsal and ventral view, apically nearly truncate with slightly posterad producing apicomesal corner and laterad producing apicolateral corner; pair of sensillae located at basal 1/ 2 of ventral face of each branch. Cerci large, located dorsally on segment IX and oriented slightly dorsad in lateral view and slightly laterad in dorsal view; covered by long setae. Gonopods shorter than segment IX, nearly quadrangular in lateral view; anterodorsal margin concave; ventral margin nearly straight, undulating; dorsal branch forming slender, ventral hook in lateral view, and broad plate with small, thorn-shaped apex in dorsal view; ventral branch in ventral view fused medially outside of segment IX; each mesal margin with 3 conical processes orienting mesad, the apical process with irregular margin. Phallic apparatus about 1.5x longer than rest of genitalia; phallotheca, in lateral and ventral view, with anterior part about twice as thick as posterior part; apicoventral spine absent; phallotremal sclerite not observed; pair of brown, posterad directed, nearly equal endothecal spines present, about as long as diameter of narrow part of phallotheca.

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, except 12–19.x. 2002, 450 m [loc#02] — 4 males [ NHRS]. Same data, except 17.667°S, 177.55°E, 26.xi–3.xii.2002, leg. E. Schlinger & M. Tokota’a [loc#02] — 2 males [ BPBM]. Same data, except 2–10.vi.2003, leg. M. Tokota’a [loc#02] — 1 male [ BPBM]. Vuda Prov., Koroyanitu Pk., 1 km E Abaca Vlg., Malaise trap 1, 22.iv–5.v.2003, 17.667°S, 177.55°E, 800 m, leg. E. Schlinger & M. Tokota’a [loc#03] — 3 males [ BPBM]. Same data, except 19–26.xi.2002 [loc#03] — 1 male [ FNIC]. Same data, except Savuione Trail, 17°40’S, 177°33’E [17.3333°S, 177.55°E], 26.x–5.xi.2002 [loc#03] — 1 male [ FNIC]. TAVEUNI: Cakaudrove Prov., 3.2 km NW Lavena Vlg., Mt. Koronibuabua, Malaise trap 5, 21.iv–6.v.2004, 16.856°S, 179.889°W, 229 m, E. Schlinger & M. Tokota’a [loc#35] — 1 male [ NHRS].

Etymology: Schlingeri , named after Dr. E. Schlinger, one of the collectors of the holotype.

Distribution: Viti Levu and Taveuni.

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 50 – 54. Chimarra schlingeri, new species, holotype. 50 — genitalia, left lateral view; 51 — genitalia, dorsal view; 52 — genitalia, ventral view; 53 — phallic apparatus, left lateral view; 54 — phallic apparatus, ventral view.