Barynema paradoxum, Wells & St Clair, 2021

Wells, Alice & St Clair, Rosalind, 2021, Review of the Australian endemic odontocerid genus Barynema and status of Australian Marilia (Trichoptera), Memoirs of Museum Victoria 80, pp. 101-112 : 104-107

Barynema paradoxum sp. nov.

http://zoobank.org/urn:lsid:zoobank.org:act:62A5E978-BCFE-49A3-829D-4F08FB542881

Figures 2, 9–12

Material examined. Holotype. male, New South Wales, 8 km N of Nowra , 21.x.1966, N.D. ( NMV Tri-27118, PT-1646).

Paratypes. New South Wales: 2 males, data as for holotype, 21.x.1966, N.D. ( NMV Tri-27113) ; 4 males, data as for holotype, 21.x.1966, N.D. ( NMV Tri-27115) ; 1 male, Minnamurra Falls , N of Kiama, 25.iii.1973, A. Neboiss ( NMV Tri-27114) ; 2 males, Mumbulla Creek, near Bega , 20.xi.1978, I. Campbell ( NMV Tri-27110) ; 3 males, 1 female, Minnamurra Falls , 22.x.1982, G. Theischinger ( NMV Tri-27139) ; 2 males, Bundanoon , 34° 39' S 150° 18' E, ix.1983, G. Theischinger ( NMV Tri-27137) .

Other material. New South Wales: 1 male [pinned], Brown Mountain , 2.xii.1956, E.F. Riek ( ANIC) ; 2 males [pinned], Macquarie Falls , 14.ix.1960, D.H. Colless ( ANIC) ; 3 males [pinned], upper Kangaroo Valley , 24.ix.1960, E.F. Riek ( ANIC) ; 1 male, eastern Fall, Clyde Mountain , 26.x.1960, E.F. Riek ( ANIC) ; 2 males, 1 female, Minnamurra Falls , 23.x.1962, D.K. McAlpine ( NMV Tri-27062 ; 2 males, 1 female, Minnamurra Falls ( NMV TRI-27062 ) ; 1 male, 1 female, New South Wales, Macquarie Pass , 13x.1986, “ G. Thei. & L. Mu. ” [G. Theischinger and L. Muller] ( NMV Tri-27133) ; 1 male, New South Wales, Macquarie Rivulet , W of Shell Harbour, 34° 34' S 150° 41' E. 4.i.1990, G. Theischinger ( NMV Tri-27134) ; 1 male, same data ( NMV Tri-27070) ; 1 male, Bundanoon, Fairy Bower , 35° 39' S 150° 18' E, ix.1991, G. Theischinger ( NMV Tri-27135) ; 2 male, same data ( NMV TRI-27137 ) ; 1 male, same data ( NMV TRI-27138 ) ; 1 female, New South Wales, Yadboro Creek, Budawang Range , 40 km SW of Nowra, 35° 22' S 150° 03' E, xi.1991, G. Theischinger ( NMV Tri-27136) ; 1 female, Yadboro Creek, Budawang Range, 40 km SW of Nowra, xi.1991, G Theischinger , 35° 22' S 150° 03' E ( NMV TRI-27136 ) ; 1 male, South East Forests National Park, trail near Monaro Highway, malaise in Hopping Joe Creek , 37° 12' 58'' S 149° 18' 37'' E, 5.xii.2004 – 12.i.2005, C. Lambkin, N. Starick ( ANIC) ; 16 males 1 female, East Boyd State Forest, Anteaters Road , 55 km SE Bombala Forest, 37° 12' 18'' S 149° 42'24'' E, 6.xii.2004 – 12.i.2005, C. Lambkin, N. Starick ( ANIC) ; 1 male, New South Wales, Polblue Creek, Barrington Tops Forest Road, 31° 57' S 151° 26' E, 2.xii.2007, A. Glaister, J. Dean and R. St Clair ( NMV Tri-54560) ; 1 male, tributary of Macquarie Rivulet off Clover Hill Road , 29.ix.2017, Z. Billingham ( NMV Ento 2018-246, JOS-424) ; 1 male, Minnamurra Creek, off Minnamurra Rainforest Walk , 3.x.2017, Z. Billingham ( NMV Ento 2018-246, JOS-423) ; 13 males, 1 female, Budawang National Park, Mount Budawang Road , 35.4563 S 149.4455 E, 16.i.2019, K.M. Bayliss, J. Lumbers and D.K. Yeates ( ANIC). Victoria: Coopracambra National Park, malaise trap over Beeline Creek , 27 km NNE of Cann River, 5.xii.2004 – 12.i.2005, C. Lambkin, N. Starick ( ANIC).

Diagnosis. Males of Barynema paradoxum resemble those of B. costatum in having distinctive black wings with a median white band across the area of vein anastomoses and a band of bright yellow hairs between veins Cu2 and A1. But in B. paradoxum , the white band is slightly curved, not angled, and the area of golden setae is smaller. Like B. costatum , B. paradoxum shares with B. dilatum sp. nov., B. lorien sp. nov. and B. dolabratum sp. nov. the absence of setate warts on the mesoscutellum and, as with those three species, the male of this new species has a rounded club of short, stout black setae apically on the distal extremity of each inferior appendage, not an elongate brush as in B. costatum . Together with B. lorien and B. lobatum sp. nov., B. paradoxum has the ventrolateral lobes of the upper penis cover tapered apically, rather than expanded. Barynema paradoxum is characterised by the coxopodite of each male inferior appendage subquadrate, not longer than wide in ventral view and not produced to form a rounded lobe at its apicomesal angle.

Description. Mesothorax without mesoscutellar setate warts. Body and wings black, each forewing with slightly curved band of white setae across vein anastomoses.

Male. Length of each forewing 6.2–9.7 mm (n = 10). Abdominal segment VII bearing small, sharp, sclerotised median spur. Genitalia: Pre-anal appendages stout, apices narrowly rounded in dorsal view; lobes of upper penis cover in ventral view tapered to acuminate apices; inferior appendages, each with coxopodite in ventral view stout, subquadrate basally, harpago about length of coxopodite, slender with a cluster of short, bristle-like dark setae on rounded club-shaped apex.

Female. Length of each forewing 9.0 mm (n = 1). Terminalia: Distal abdomen bearing pair of short apical lobes, stout basally, rounded laterally and tapered to rounded apices; striated plates ventrally on segment IX.

Distribution. Widespread in eastern New South Wales, extending into far eastern Victoria, possibly overlapping with B. costatum .

Etymology. Named for the past confusion over this species, and the paradox presented by the variability in male genitalic structures. Most specimens were identified previously as B. costatum .