Description of eleven new Triplectides species (Trichoptera: Leptoceridae) from New Caledonia
Author
Malm, Tobias
Author
Johanson, Kjell Arne
text
Zootaxa
2008
1816
1
34
journal article
10.5281/zenodo.182902
4984277e-ff5f-4a5d-97f5-4b225cfa3921
1175-5326
182902
Triplectides noumeiensis
,
new species
Figs 25–32
,
92
.
Diagnosis.
This species is separated from many other
Triplectides
species by the spur formula 2:2:2. Unlike
australis
it lacks fork
1 in
the hind wings. It is separated from
sasali
and
koghiensis
,
new species
, by the shape of tergum X. It is similar in both genitalia and wings to
winstanleyi
,
mouiensis
,
minutus
and
abnormalis
, but is distinguished from the first by size, and from the latter three by the inferior appendages basoventral process size and orientation, and the forewing hair patterns. It is most similar to
tigrinus
,
new species
, from which it is distinguished by the shape of tergum X and the inferior appendages mesal lobe.
Male: Body colour light straw to light yellow (in alcohol). Tibial spur formula 2:2:2. Claws on all legs unmodified. Forewing (
Figs 25, 27
) length 8.0–9.0 mm (N=5); colour straw to yellow (in alcohol); diffusely banded, with rugged, darker, banded area around junction of R and Sc; lighter area present at base of S4 and crossvein m-cu; forks 1, 2 and 5 present; fork 1 and branching of m with stalks about half as long as fork lengths; Dc narrow, about 2/3 as long as Tc; distance between crossvein s and S4 equal to or shorter than length of S4, S4 meeting M close to crossvein m-cu.
Hind
wing (
Fig. 26
) forks 2, 3 and 5 present; S4 arising at apical 1/3 of Dc. Nygma present in all wings in fork 2.
Genitalia (
Figs 28–32
): segment IX narrowing ventrad, in ventral view (
Fig. 30
) with broad central posterior extension. Superior appendages (
Figs 28, 29
) slightly longer than half-length of tergum X, dorsoventrally flattened, broad, apically pointing posterad in lateral view, truncate to rounded in dorsal view. Tergum X with minute, simple, dorsobasal projection; in ventral view (
Fig. 30
) widening to broad apex, with rounded lateral corners and shallow mesal incision; apical margin with minute setae; ventrally with carinae tangent apicomesally (
Fig. 30
). Inferior appendages (
Figs 28, 30
) robust; apicodorsal lobes exceeding short harpagones; basoventral processes very short, rounded, directed laterad, not reaching posterior margin of mesal lobes; mesal lobes wide, bearing two ventral setae; mesal part slightly produced distad, folded dorsally; lateral corners prominently produced distad, deeply separated from major branch. Phallus (
Figs 31, 32
) bent ventrad immediately before half-length; in ventral view, apically narrowing before apex, with v-shaped ventral ridge covering lateral flanges at apex.
Distribution.
This species is found in the southeastern part of Grande Terre, around Noumea (
Fig. 92
).
Etymology.
Name derived from the limited distribution area of this species around Noumea.
Holotype
male:
New Caledonia
: Province Sud:
Mt Mou, stream crossing way to Sanatorium
2.3 km
E St. Laurent, ca
30 m
downstream bridge,
22º04.484’S
,
166º19.900’E
,
15.xi.2003
, light trap, loc #028 [KA Johanson].
Paratypes
:
Province Sud:
same data as
holotype
–
3 males
; Rivière Ouanéoue, at bridge crossing road to Koghi Mts., ca.
1.5 km
from road RT1 Noumea-Dumbea,
22º10.861’S
,
166º29.531’E
,
04.x.2006
, light trap, loc#024 [KA Johanson & M Espeland] –
1 male
.