Descriptions of 2 new genera and 13 new species of caddisflies from Australia (Trichoptera: Ecnomidae)
Author
Cartwright, David I.
text
Zootaxa
2010
2415
1
21
journal article
10.5281/zenodo.194387
512294f5-a88a-4d26-b7bf-d56ba038f5bd
1175-5326
194387
Absensomina weara
sp. nov.
Figs 1–6
Diagnosis.
Absensomina weara
is most similar to species of the genus
Agmina
from
New Caledonia
which also lack fork
3 in
the hind wing (
Ward and Schefter 2000
). It differs from
Agmina
species in several characters, including the forewings each having both forks 2 and 3 with relatively long footstalks (Fig. 1) and small details of the male genitalia.
Description.
Head, body and wings fawn; length of forewing: male
2.6–3.2 mm
, female 2.7–3.0 mm; wing venation: as in generic description (Fig. 1).
Male. Tergum X not apparent (Fig. 5). Superior appendages short and robust, in lateral view, subrectangular, length about twice height (Fig. 3), in dorsal view, length about same as width, each with 1 dorsal and 1 ventral mesal digitiform processes subapically (Fig. 5). Phallus tube-like with pair of long upturned dorsolateral processes near middle and short, partly retracted spine apically (Fig. 3). Inferior appendages in ventral view fused to form single, wide, strongly depressed semi-triangular plate, with short central process distally (Fig. 4); in lateral view slender, length about 5 times width (Fig. 3).
Female. Genitalia with abdominal sternite VIII relatively broad, basally with small mesal process, not well developed (Figs 6, 6a); segment IX long, broad-based, tapered distally, segment X relatively short, slender (Fig. 6).
Holotype
male
: Queensland,
1 male
, Gunshot Ck, Telegraph Crossing,
11°44'S
,
142°29'E
, Cartwright and Wells (
NMV
,
T-
20705).
Paratypes
. Queensland.
1 male
(specimen CT-439 figured), Bertie Ck,
1 km
SE Heathlands HS,
11°45'S
,
142°35'E
,
4 Feb 1992
, Cartwright and Wells;
2 males
,
2 females
, Yuccabine Ck, Kirrama State Forest,
18°12'S
,
145°45'E
,
5 Mar 1985
, R. Pearson;
1 male
, same loc.,
18°12'S
,
145°54'E
,
Mar 1986
, R. Pearson and L. Benson;
2 males
,
1 female
(specimen CT-498 figured), same locality and collector,
Dec 1985
;
1 male
, Camp Ck trib., Mt Spec State Forest,
18°57'S
,
146°10'E
, lt. tr.,
760m
,
27 Jan 1994
, A.L. Sheldon (
NMV
).
Etymology.
Weara
- North Queensland Aboriginal word for wide (inferior appendages- ventral view).
Remarks.
Absensomina weara
is a distinctive and uncommon species recorded from two widely separated areas of northeastern Queensland (latitudinal range 11°44'–
18°57'S
). This species has previously been referred to as
Ecnomina
sp. n.
A (
Wells and Cartwright 1993: 227
) and
Ecnomina
sp. nov.
PT-1590 (
Walker
et al.
1995
: 22;
Cartwright 1997
: 5).
FIGURES 1–6.
Absensomina weara
sp.
nov.
1: Forewing and hind wing. 2: Head and thorax, dorsal view. 3–5: Male genitalia in left lateral, ventral and dorsal views. 6: Female genitalia in ventral view. d.c., discoidal cell; i.a., inferior appendage(s); occ.w., occipital wart(s); pha., phallus; s.a., superior appendage(s); s.viii, sternite viii; R1, 1st radius; 2, fork 2; 3, fork 3; 4, fork 4; 5, fork 5.