Oecetis terania, Wells, 2004

Wells, Alice, 2004, The long-horned caddisfly genus Oecetis (Trichoptera: Leptoceridae) in Australia: two new species groups and 17 new species, Memoirs of Museum Victoria 61 (1), pp. 85-110 : 101

Oecetis terania sp. nov.

Figures 68, 69, 122

Material examined. Holotype, male, NSW, Terania Creek , N of Lismore, 28°25’S 153°18’E, 21 Jan 1986, G. Theischinger ( NMV T-18516) (slide).

Paratypes. 2 males, 1 female, same data as holotype ( NMV) (one male on slide) .

Diagnosis. Wings with dense vestiture of downy hair and male genitalia with inferior appendages bifurcate in lateral half, the ventral lobes curving and clasper-like, the dorsal lobes more slender and straight.

Description. Spurs 1, 2, 2. Male forewing length 6.0– 6.1 mm. Wings typical form, tapered distally; footstalk on fork 1 about half length of fork; t2 more distal than t1or t3. Genitalia, Figs 68, 69. Abdominal segment IX narrow. Preanal appendages discrete, about twice as long as wide in lateral view, more or less conical in dorsal view. Tergite X a short, narrow membrane, about length of preanal appendages. Inferior appendages in ventral view broad-based, bilobed in distal half, with the ventral lobes almost meeting mesially, dorsal arms slender and straight; in lateral view stout and irregular in shape basally, the dorsal arm almost straight, extending well beyond the ventral arm. Phallus curved ventrally.

Distribution. North-eastern NSW (Fig. 122).

Remarks. In shape the male inferior appendages of this species more closely resembles those of some complexa -group species, but the phallus lacks spines or parameres of the kind seen in that group. The species is known only from the type locality.

Etymology. For the creek at the collecting site.