Etheophanus optandus Broun, 1923, 1921

Davis, Steven R., Brav-Cubitt, Talia, Buckley, Thomas R. & Leschen, Richard A. B., 2019, Systematics of the New Zealand Weevil Etheophanus Broun (Curculionidae: Molytinae), Zootaxa 4543 (3), pp. 341-374 : 355

Etheophanus optandus Broun, 1923

( Figs 1C , 2C , 5C , 10 , 11 )

Etheophanus optandus Broun, 1923: 702 . Type locality: Hollyford, southwest Otago.

Diagnosis. Dorsal surfaces apunctate, alveolate microsculpture present. Pronotal vibrissae present. Procoxa without semi-lamellate process, primary dorsal setae adpressed. Eighth sternite of male with each sclerite bearing ca. 5 setae along apical margins; spiculum relictum slender. Aedeagus with setae present at apical ¼ of parameroid lobes; median lobe in dorsal view not narrowing to apex and rounded apically with simple edges, in lateral view narrow and elongate and not strongly curved ventrally near apex; apico-lateral margin of median lobe bearing a bundle of ca. 7 to 8 setae at each side. Female tergite VIII apically evenly arcuate; eighth sternite with arms of base parallel-sided, apices with 3 setae. Gonostylus with 4–5 apical setae. Spermatheca falciform without globular base.

Comments. Broun based the description on a single specimen that we confirmed as the holotype.

Distribution. South Island: MK, OL, WD, FD, SI.

Type material examined. Holotype ( BMNH): card-mounted, “ Type [round label with red border] // 4311 [ Broun number in pencil, unknown hand] // New Zealand. [red underline] Broun Coll. Brit. Mus. 1922-482. // Hollyford. 23.2.14. [in Broun’s hand] // Etheophanus optandus . [in Broun’s hand] // HOLOTYPE [printed] ♀ Etheophanus optandus Broun, 1923 det. R. Craw, 1987 [in Craw’s hand on orange dayglow label]”.

Dissected material (NZAC). South Island. FD. Lake Gunn, Eglington Val., 30 Oct. 1966, J.I. Townsend, litter under Nothofagus (2 males). WD. Fox Glacier, 12 Nov. 1968, J.I. Townsend, litter (1 male) ; Fox Glacier, Minnehaha Tr., 8 Feb. 1965, N.A. Walker, litter (1 female).

Figures

FIGURES 1A–G. Dorsal habiti of Etheophanus spp. A, E. kuscheli sp. n.; B, E. nitidellus; C, E. optandus; D, E. pingius; E, E. striatus.

FIGURES 2A–G. Lateral habiti of Etheophanus spp. A, E. kuscheli sp. n.; B, E. nitidellus; C, E. optandus; D, E. pingius; E, E. striatus.

FIGURES 5A–G. Key characters of Etheophanus spp. A, E. kuscheli sp. n., apical half of median lobe (dorsal view); B, E. nitidellus, apical half of median lobe (dorsal view); C, E. optandus, apical half of median lobe (dorsal view); D, E. pingius, apical half of median lobe (dorsal view); E, E. striatus, apical half of median lobe (dorsal view); F, E. nitidellus (female), internal view of abdominal ventrites showing pair of apodemes on fifth ventrite; G, E. kuscheli, showing semi-lamellate process on procoxa (arrow).

FIGURES 10A–D. Etheophanus optandus, male terminalia. A, aedeagus, dorsal view; B, aedeagus, lateral view; C, tegmen, dorsal view; D, sternites VIII and IX, showing spiculum relictum.

FIGURES 11A–D. Etheophanus optandus, female terminalia. A, sternite VIII; B, tergite VIII; C, gonocoxites; D, spermatheca.