Australian Diplectroninae reviewed (Insecta: Trichoptera), with description of 21 new species, most referred to a new genus
Wells, Alice
Contents, Arturs Neboiss Table Of
Zootaxa
2018
2018-04-27
4415
1
1
44
Wells & Contents, 2018
Wells & Contents
2018
[151,388,605,631]
Insecta
Hydropsychidae
Austropsyche
GBIF
Animalia
Trichoptera
15
16
Arthropoda
species
acuta
sp. nov.
Material examined. Holotype ♂, New South Wales, Crystal CreekRainforest Resort, Upper Crystal Creek, 26– 27.xii.2016, A. Wells( ANIC). Paratypes, Queensland: 45♂ 13♀, Crystal CreekRainforest Resort, Upper Crystal Creek, 28°15'S 153°15'E, 26–27.xii.2016, A. Wells; data as for holotype ( ANIC); 4♂ 3♀, same locality, 26.xii.2006, A. Wells( NMV). Othermaterial examined. New South Wales: 1♂, Korumbyn Creek, 28°24'S 153°19'E, eastern slope of Mt Warning, 29.vi.1988, A. Neboiss; 2♂ 5♀, Orara West State Forest, Tucker's Knob, 29°41'S 152°48'E, 22.xi.1990, G. Theischinger; 13♂ 3♀, Upper Crystal Creekat Crystal CreekRainforest Retreat, 28°15'S 153°15'E, 24.xii.2006, A. Wells; 18♂ 13♀, same locality, 25.xii.2006, A. Wells; 1♀, same locality, 22.xii.2016, A. Wells; 4♂ 3♀, same locality, 22.xii.2016, A. Wells; 42♂ 6♀, ♀, same locality, 25–26.xii.2016, A. Wells. SE Queensland: 1♂, Coomera Creek, Lamington NP, 8.ii.1961, F.A. Perkins[TRI-13850]; 1♂, Queen Mary Falls, Killarney, 12.x.1973, A. Neboiss; 1♂, Teviot Brooknr Wilson’s Peak, 18.xi.1980, M. Schneider; 1♂ Conondale Range, Bundaroo Creek, rainforest, 1.xii.1983, G. Cassis& D. Bickel[TRI-39868]; 8♂, same data [TRI-39499].
Diagnosis.This species forms a set with Austropsyche ambigua, here termed the Au. acutaGroup, characterised by having the forewing median cell short, about equal in length to the discoidal cell; in the male genitalia, paired elongate sclerotised spines arise internally at the base of the deep apodeme connected to the gonopods and the mesal processes on the coxopodites arise apically, not subapically or basally. It is distinguished from Au. ambiguaby having the apicomesal process on the coxopodite at least half length of harpago, needle-like, and subtended dorsally by a small conical lobe.
Description.Length of each forewing: ♂ 9.2–11.1 mm(n = 10), ♀ 11.4–12.2 mm(n = 9); cross-vein r-manterad of cross-vein closing median cell. Male. Abdomen swollen, internal sacs all elongate, each sack extending length of two segments; on segment V lateral filament length slightly less than length of segment ( Fig. 83). Genitalia ( Figs 59–60): Segment IX subquadrate, tergites IX and X partly fused; gonopods each with coxopodite almost equal width throughout length, narrow sharp process apicomesally, small conical dorsal lobe at base, harpago about length of coxopodite, elongate digitiform; phallic apparatus cylindrical, dilated apically, without endothecal spines; pair of elongate slender spines lateral to phallus, arising at base of apodemes connected to gonopods, converging apically. Female. Abdominal segment VIII ( Figs 100–101) with sternal plates separated, but indistinctly, tapered distally with apicolateral angles triangular; cerci and apical papillae on segment X relatively large, as for Au. victoriana.
Remarks.Unlike males of most caddisfly species, males of Au. acutaare as large as, or larger than the associated females, and have sizeable, swollen abdomens. On dissection one finds that much of the abdominal cavity is occupied by the 2 pairs of reticulate-walled sacs. That, coupled with the fact that most of the light trap specimens collected in 2017 were male, leads to speculation that the sacs, which appear to be glands, may be involved in male-male attraction, in lekking behaviour.
1841138445
2016-12-26
2016-12-27
2016-12-26
ANIC
A. Wells
Upper Crystal Creek
Crystal Creek Rainforest Resort
Crystal Creek
15
16
1
1
New South Wales
holotype
1841138453
2016-12-26
2016-12-27
2016-12-26
ANIC
A. Wells
Crystal Creek Rainforest Resort
-28.25
Upper Crystal Creek
1233
153.25
Crystal Creek
15
16
58
13
45
Queensland
paratype
1841138449
[777,1362,820,845]
2006-12-26
2016-12-27
2016-12-26
NMV
A. Wells
Crystal Creek Rainforest Resort
-28.25
Upper Crystal Creek
1233
153.25
Crystal Creek
15
16
7
3
4
Queensland
paratype
1841138485
1988-06-29
Mt Warning & A. Neboiss
United Kingdom
-28.4
Korumbyn Creek
1232
153.31667
Other
15
16
1
1
New South Wales
1841138439
1990-11-22
G. Theischinger
United Kingdom
-29.683332
Tucker's Knob
1226
152.8
Orara West State Forest
15
16
7
5
2
New South Wales
1841138442
2006-12-24
A. Wells
United Kingdom
-28.25
Crystal Creek
1233
153.25
Upper Crystal Creek
15
16
16
3
13
New South Wales
1841138473
[266,799,964,989]
2006-12-25
A. Wells
United Kingdom
-28.25
Crystal Creek
1233
153.25
Upper Crystal Creek
15
16
31
13
18
New South Wales
1841138476
[811,1272,964,989]
2016-12-22
A. Wells
United Kingdom
-28.25
Crystal Creek
1233
153.25
Upper Crystal Creek
15
16
1
1
New South Wales
1841138426
2016-12-22
A. Wells
United Kingdom
-28.25
Crystal Creek
1233
153.25
Upper Crystal Creek
15
16
7
3
4
New South Wales
1841138467
[501,1274,999,1024]
2016-12-25
2016-12-26
2016-12-25
A. Wells. & SE Queensland
United Kingdom
-28.25
Crystal Creek
1233
153.25
Upper Crystal Creek
15
16
49
7
42
Queensland
1841138466
1961-02-08
Lamington NP & F. A. Perkins
United Kingdom
Coomera Creek
15
16
1
1
Queensland
1841138483
1973-10-12
A. Neboiss
United Kingdom
Killarney
Queen Mary Falls
15
16
1
1
Queensland
1841138486
[258,969,1071,1096]
1980-11-18
M. Schneider
United Kingdom
Wilson's Peak
Teviot Brook
15
16
1
1
Queensland
1841138472
1983-12-01
G. Cassis & D. Bickel
United Kingdom
Bundaroo Creek
Conondale Range
15
16
1
1
Queensland
1841138479
[810,1128,1108,1133]
1983-12-01
G. Cassis & D. Bickel
United Kingdom
Bundaroo Creek
Conondale Range
15
16
8
8
Queensland