Duplex horakae Fibiger, 2010

FIBIGER, MICHAEL, 2010, Revision of the Micronoctuidae (Lepidoptera: Noctuoidea) Part 3, Taxonomy of the Tactusinae, Zootaxa 2583 (1), pp. 1-119 : 86-87

publication ID	https://doi.org/ 10.11646/zootaxa.2583.1.1
persistent identifier	https://treatment.plazi.org/id/7C67FC6F-2D66-FFFE-FF28-FB7EEE9D76F8
treatment provided by	Felipe
scientific name	Duplex horakae Fibiger
status	sp. nov.

Treatment

Duplex horakae Fibiger View in CoL , new species

( Plate 10 View PLATE 10 , figure 6; male genit. plate 20, figure 1, 2; female genit. plate 25, figure 8)

Material examined. Holotype. Male, Australia, Northern Territory, Cobourg Peninsula, Black Point , 11’09S 132’09 E, 29.i.1977, leg. E. D. Edwards, genit. prep. 6077 M. Fibiger, coll. ANIC.

Paratypes. 10 males and 12 females. 2 males, 3 females, with same data as holotype, but 24.1.1977, 30.i.1977, 1.ii.1977, and 1 male genit. prep. 6076 M. Fibiger; 2 females, Australia, Northern Territory, East Point , 12º25S 130º49E, 5.iv.1991, leg. M. Horak & A. Wells GoogleMaps ; 1 male, Australia, West Australia, 4 km S by W Mining Camp, Mitchell Plateau , 14º52’S 125º50’E, 2–6.vi.1988, leg. I. D. Naumann, genit. prep. 6078 M. Fibiger GoogleMaps ; 1 male, 3 females, Australia, Western Australia, Mitchell River , 15º07’S 125º45’E, 27.v.1993, leg. E. D. Edwards, genit. preps 6079 and 6080 M. Fibiger GoogleMaps ; 3 females, Australia, Queensland, Keating’s Gap , 3 km SW Cooktown, 15º30’S 145º14’E, 21.v.1995, leg. M. Horak & M. Matthews, genit. prep. 6097 M. Fibiger GoogleMaps ; 1 female, Australia, Hann River Crossing, 15º12’S 143º52’E, 23.vi.1989, leg. E. S. Nielsen, M. Horak & E. D. Edwards, genit. prep. 6079 M. Fibiger. Colls ANIC, G. Cocking, and M. Fibiger GoogleMaps .

Diagnosis. Imago (external). Wingspan: 7.5–9 mm.

Labial palps: grey, third segment half length of second, third segment only slightly narrower than second.

Head, thorax, and ground colour forewing, including fringes: grey or blackish grey.

Reniform stigma: bright yellow, ovoid.

Crosslines: all lines present, black; antemedial line prominent, sharply angled subcostally; subterminal line prominent, waved; this line well marked, waved; terminal line marked by dense black interneural spots.

Hindwing: light grey, discal spot absent.

Underside: forewing dark grey; hindwing grey, with indistinct discal spot.

Abdomen: grey, with dark grey tuft on basal segment.

Male genitalia. Tegumen, vinculum: inconspicuous.

Saccus: apically round.

Juxta-anellus plate: totally fused; arched, semi-globular; with hole for phallus, prominently displaced to left; at dorsal edge two, long, spinelike, parallel, narrow processes.

Valvae: slightly asymmetrical.

Ampulla: asymmetrical; large; like two plates, medially separated by deep cleft; dorsal left plate: ventrally straight, dorsally slightly ovoid, rounded; dorsal right plate: same but less elongated than left; ventral left and right plate: pick-axe-like, upper lobe slightly smaller than lower (apo.).

Digitus: absent.

Phallus: long, narrow, tapered, curved 280º; coiled clockwise (apo.).

Vesica: unarmed.

Female genitalia. Posterior apophyses: 1.5 times as long as anterior apophyses.

8 th abdominal segment: short, ringlike; connected by membrane to 7 th segment dorsally and laterally; ven-

Antrum: narrow, conelike, 0.6 times shorter on ventral side (apo.).

Ductus bursae: membranous, very narrow, slightly more than twice as long as corpus bursae (apo.).

Corpus bursae: ovoid, with cross-shaped signum.

Differential diagnosis. D. horakae differs from other Duplex species in short and broad, grey or blackish grey forewing, shape of ampulla and antrum, and length of ductus bursae. It is smallest known Australian species.

Distribution. D. horakae is known from Australia, northern parts of Northern Territory and north-eastern part of Western Australia.