Gnathifera fuscostriata, Gaedike, 2018

Gaedike, Reinhard, 2018, New data on the taxonomy, distribution and host plants of Australian Epermeniidae (Lepidoptera: Epermenioidea), Zootaxa 4524 (1), pp. 33-50 : 39-40

publication ID 10.11646/zootaxa.4524.1.2

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scientific name

Gnathifera fuscostriata

sp. nov.

Gnathifera fuscostriata sp. nov.

( Figs 11–12 View FIGURES 7–12 , 27–28 View FIGURES 22–27 View FIGURES 28–30 )

Type material. Holotype: ♂, Queensland: “ 27°34'S, 152°02'E, 400m, 6.5km E of Toowoomba , QLD, 6 Aug. 1985, [leg.] I. F. B. Common;” “Gen.präp. [genitalia slide] Gaedike Nr. 9197;” “ Holotypus ♂, Gnathifera fuscostriata sp. n., det. R. Gaedike 2018;” ANIC GoogleMaps , Paratypes: 1 ♀, “Murphys Creek nr. Toowoomba, Q. 18 Oct. 1982, [leg.] I. F. B. Common, “Gen.präp. [genitalia slide] Gaedike Nr. 9189;” ANIC, 1 ♀, “ 27°33'S, 151°55'E, Prince Henry Heights, 620m, Toowoomba , Q., 24 Feb. 1982, [leg.] I. F. B. Common;” “Gen.präp. [genitalia slide] Gaedike Nr. 9198;” SDEI. GoogleMaps

Description. ( Figs 11–12 View FIGURES 7–12 ). Wingspan 9–12 mm;

Head dark grey, tip of scales lighter; labial palpus lighter coloured, curved upwards, scales more or less stick out; antenna without pecten, nearly 2/3 of the length of forewing.

Thorax and tegulae dark grey basally, light grey apically; forewing narrow, dorsum without clear tuft of raised scales, with a thin whitish coloured stripe from base to 1/2, ground colour from light to dark grey; three short brown streaks from base to the end of cell, a fourth streak situated apically, a minute black dot between the each two streaks; forewing area between the first two streaks and dorsum with dark scales, apical ¼ of wing with dark scales, fringe along termen with two somewhat sickle-shaped scale-lines; hindwing light grey. Female with broader brown streaks (see Fig. 12 View FIGURES 7–12 ).

Male genitalia ( Fig. 27 View FIGURES 22–27 ). Tegumen laterally with bristled edges, uncus slightly curved, with pointed tip; gnathos broad, nearly rectangular, with rounded edges, with numerous minute bristles; valva narrow, more or less parallel, costal edge ending as a thin pointed process, ventral edge from apical fourth of valva directed obliquely upwards, ending in a bristled digital process, subapically with a strongly sclerotized pointed long thorn; apodeme prolonged to a long process of nearly the length of valva, apically with minute thorns; phallus basally rounded, apical half enlarged, inside with a small hook-shaped cornutus.

Female genitalia ( Fig. 28 View FIGURES 28–30 ). Ventral arms of anterior apophyses broadened, covered with minute thorns, ductus bursae with strongly sclerotized ring, corpus bursae covered with minute sclerotizations, signum more or less round, one edge with minute strongly sclerotized thorns.

Diagnosis. The thin whitish coloured stripe at dorsum is similar to the forewing pattern found in G. acacivorella , G. montana and G. queenslandi , with pale or whitish coloured stripe, but the four brown streaks from base along cell to apex make the new species distinguishable externally. Clear differences are seen in the male genitalia structure: broad, nearly rectangular gnathos, parallel-sided valva with apical thin pointed process, apodeme as long as valva and phallus with minute cornutus, while the above mentioned species with narrow ( queenslandi ) or broad rounded gnathos ( acacivorella , montana ), with shorter ( acacivorella ) or forked ( montana ) apodeme, and phallus without cornutus.

Distribution. Queensland.

Bionomics. The e arly stages and host plants are unknown.

Etymology. This species is named after the colouration of forewing (latin: fuscus = brown; striatus = streaky).


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