Clypeolus robustus (Broun), 1993

Brown, Samuel D. J., Leschen, Richard A. B. & Groenteman, Ronny, 2025, A new species of the New Zealand endemic weevil genus Clypeolus Broun (Coleoptera: Curculionidae: Cryptorhynchinae), found attacking an invasive weed, white horehound (Marrubium vulgare L. Lamiales: Lamiaceae), Zootaxa 5717 (4), pp. 544-570 : 560-561

Clypeolus robustus (Broun)

( Figures 66–68 )

Acalles robustus Broun, 1909: 148 . Type locality: Mt Te Aroha .

Clypeolus robustus (Broun) Lyal, 1993: 68 .

Diagnosis: Pronotum with a vase-shaped area circumscribed by raised scales on the disc; posterior margin curved. Elytra narrower at anterior margin than at midpoint; dorsal margin in lateral view strongly curved; narrow, elongate depressions present on the disc, these being readily visible in the somewhat abraded type specimen, but may be concealed by scales in fresh specimens; pale elytral maculae delimited posteriorly by a crest of raised scales.

The vase-shaped pattern on the pronotum is similar to C. lachrymosus , but this species differs by having the posterior margin of the pronotum curved (cf. straight in C. lachrymosus ), the elytra being narrower across the anterior margin than at the midpoint (cf. approximately of similar width across midpoint as at the anterior margin in C. lachrymosus and lacking a strongly pronounced carina on interstria 8 (that is present in C. lachrymosus ).

Distribution: North Island: BP.

Remarks: No other specimens attributable to C. robustus have yet been located in New Zealand collections, and this species is currently known only from the syntypes held in the NHM. Although Lyal identified a specimen in NZAC from Titirangi (AK) as this species, after examination of this specimen SDJB believes it is better attributed to C. pascoei .

Figures

FIGURES 66–68. Acalles robustus Broun, 1909, holotype. 66, dorsal view; 67, lateral view; 68, labels. Figures not at the same scale.