Skip to main page content
Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
, (160), 73-96

New Genus and Species of Broad-Nosed Weevils From Baltic Amber and Notes on Fossils of the Subfamily Entiminae (Coleoptera, Curculionidae)

Affiliations

New Genus and Species of Broad-Nosed Weevils From Baltic Amber and Notes on Fossils of the Subfamily Entiminae (Coleoptera, Curculionidae)

Nikolai N Yunakov et al. Zookeys.

Abstract

Arostropsis groehnigen. et sp. n. is described from Baltic amber and temporarily placed in the tribe Naupactini. It differs from all recent Naupactini genera with open corbels by very short and flattened scape, distinct lateral carina of the pronotum and elytra, and the rostrum distinctly narrower than the head capsule. The shape of head in the extinct genus is somewhat similar to that of the extant Naupactini genera with enclosed corbels (Platyomus Sahlberg, 1823 and Aptolemus Schoenherr, 1842), but differs in the slender body, open corbels, very short antennal scape and epifrons without a median sulcus (only a longitudinal depression is slightly visible). It is also similar to the Tanymecine genus Pandeleteius Schoenherr, 1834 in general appearance, but distinct by the straight anterior edge of the pronotum, lack of postocular spurs, lobes, and vibrissae, a slightly sloping elytral declivity, lateral ridges on the pronotum, subflattened antennal scape, elongate rostrum, and sparsely setose epistome. A new synonymy of the generic names Protonaupactus Zherikhin, 1971 and Sucinophyllobius Wanat & Borowiec, 1986, syn. n., is established. The Madagascan genus Corecaulus Fairmaire, 1903 is transferred from the tribe Naupactini to the Brachyderini because of its connate claws and the similarity in chaetotaxy of the epistomal area with African and Madagascar Brachyderini genera. A key to the identification of known Baltic amber genera of Entiminae is proposed. A checklist of the prepleistocene fossil Entiminae, based on V.V. Zherikhin's data, with remarks and corrections, is presented.

Keywords: Baltic amber; Naupactini; checklist; fossil Entiminae; key; new genus and species; new synonymy.

Figures

Figures 1–6.
Figures 1–6.
Arostropsis groehni gen. et sp.n. 1 body, dorsal view 2 body, lateral view 3 body, ventro-lateral view 4 head, dorsal view 5 protarsi 6 metatibia apex. Abbreviations: cb – corbel, ma – mandibular process. Body length: 6.4 mm.
Figures 7–8.
Figures 7–8.
Arostropsis groehni gen. et sp.n. 7 body outline, lateral view 8 idem, ventro-lateral view (anterior and middle limbs removed). Abbreviations: ed elytral declivity, hp humeral prominence, lr lateral ridge, ma mandibular process. Body length: 6.4 mm.
Figures 9–12.
Figures 9–12.
Arostropsis groehni gen. et sp.n. 9 head, antero-lateral view 10 idem, antero-dorsal view 11 head and prothorax, lateral view 12 antenna, lateral view. Abbreviations: lr lateral ridge, ma mandibular process. Scale bar: 1 mm.
Figures 13–18.
Figures 13–18.
Species ofArostropsis, Lepropus, and Naupactus, details. Figs 17 and 18 (modified from Thompson 1992). 1316. Arostropsis groehni sp. n. 13 base of pronotum and elytra 14 epistome 15 epipleural margin of elytra 16 protarsus 17 Lepropus rutilans (Olivier, 1807) (Tanymecini), mandibular processes dentate 18 Naupactus fatuus Boheman, 1833, mandibular processes simple (Naupactini). Abbreviations: dc dorsal carina of mandibular process, ibt interobasal tooth of mandibular process, es epistomal setae, ma mandibular process. Scale bar: 1 mm (Figs 13, 15); 0.5 mm (Figs 14, 16); not in scale (Figs 17, 18).
Figures 19–24.
Figures 19–24.
Protonaupactus sobrinus (Voss, 1972), holotype, male. 19 body, dorsal view 20 elytral declivity, posterior view 21 head and pronotum, dorsal view 22 body, lateral view 23 rostrum, dorsal view (transverse sulcus, indicated by dashed line, hidden by dense scale vestiture) 24 antennal club. Abbreviations: es epistomal setae, ts transverse sulcus. Body length: 4.5 mm.
Figures 25–30.
Figures 25–30.
Protonaupactus sobrinus (Voss, 1972), holotype, male. 25 head with antennal scape, dorsal view 26 idem, lateral dorsal view 27 epistomal area of rostrum 28 pronotum and elytral base, dorsal view 29 anterior right leg, dorsal view 30 elytral apex with pygidium and anal ventrite. Abbreviations: ts transverse sulcus, es epistomal serae, ep epistome, fr frons, pep parepistome. Scale bar: 1 mm (Figs 25, 26, 28, 30); 0.5 mm (Figs 27, 29).
Figures 31–34.
Figures 31–34.
Protonaupactus sobrinus (Voss, 1972), holotype, male. 31 metatibial apex and tarsus lateral view, and claws dorsal view 32 mesotarsus ventral view 33 posterior leg 34 antenna. Remark. Setose pelma (term after Doyen 1966) indicated by grey color. Scale bar: 0.25 mm (Figs 31, 32); 0.5 mm (Figs 33, 34).
Figures 35–39.
Figures 35–39.
Anypotactini, details. 35, 38 body, lateral view; 36, 39 body, dorsal view; 37 head, dorsal view. 3537 Anypotactus exilis Boheman, 1840, female (Venezuela); length 3,3 mm 38, 39 Hyphantus buccifer Germar, 1824, female (Brazil); length 8,2 mm. Abbreviations. isc incrustation scales, ep epistome, fr frons, ts transverse sulcus.

Similar articles

See all similar articles

Cited by 2 PubMed Central articles

References

    1. Alonso-Zarazaga MA, Lyal ChHC. (1999) A world catalogue of families and genera of Curculionoidea (Insecta: Coleoptera) (excepting Scolytidae and Platypodidae) Entomopraxis, Barcelona, 315 pp.
    1. Burmeister H. (1831–1832) Handbuch der Entomologie. Band I. G. Reimer, Berlin, xvi + 696 pp.
    1. Emden F van. (1944) A key to the genera of Brachyderinae of the world. Annals and Magazine of Natural History 11(11): 503–532, 559–586. 10.1080/00222934408527452 - DOI
    1. Doyen JT. (1966) The Skeletal Anatomy of Tenebrio molitor (Coleoptera: Tenebrionidae). Miscellaneous publications of the Entomological Society of America 5 (3): 103-150.
    1. Germar EF. (1849) Über einige Insekten aus Tertiargebildungen. Zeitschrift der Deutschen geologischen Gesellschaft 1: 52-66.

LinkOut - more resources

Feedback