Otiorhynchus Germar 1822
Creators: name: Szénási, Valentin
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Curculionidae
Otiorhynchus

description: Provisional key to species of Otiorhynchus subgenus Anchorrhynchus
Most of the females of O. sabbadinii Pesarini, 1985; O. schlaeflini Stierlin, 1861, and O. solariorum Lona, 1922 are almost impossible to determine on the basis of external morphological characters without knowledge of the exact locality. Otiorhynchus cypricola Reiche & Saulcy, 1858 is not included in the key because no specimens were examined.
1. Elytral interstriae conspicuously narrower than striae, with large and deep punctures. Body elongate, rostrum longer and narrower, 1.8.–2.4 times longer than head, clearly longer than wide.............................................. 2
– Elytral interstriae as wide as striae, or wider. Body elongate oval to oblong oval. Rostrum length-width ratio variable...... 6
2. Body almost glabrous, without scales................................................... maderi dajtitensis Lona
– Body covered with more dense, metallic scales.............................................................. 3
3. Pronotum punctate......................................................................... roznerantii sp.n.
– Pronotum granulate................................................................................... 4
4. Elytral scales short oval. Funicle segments 3–7 elongate. Elytra longitudinally weakly convex...... muellerorum Colonnelli
– Elytral scales elongate and lanceolate, intermixed. Funicle segments of variable lenght Elytra longitudinally flat.......... 5
5. Body on average larger (6.0– 7.2 mm). Area between antennal insertions with conspicuous keel, epifrons with deep and fairly wide median sulcus. Funicle segment 3 elongate, 4 isodiametric, 5 transverse, 6-7 isodiametric, more globose and with conspicuously stout, dark brownish setae. Penis almost parallel-sided, slightly wider at apical third, distally widely truncate, shallowly excised (Figs 4 g –i)........................................................ maderi maderi Formánek
– Body on average smaller (5.4–6.8 mm). Area between antennal insertions without or weakly developed keel, epifrons with shallow and quite narrow median sulcus. Funicle segments 3-4 elongate, 5 isodiametric, 6-7 elongate, subtriangular. Penis weakly tapering to distal fifth, distally widely truncate (Figs 4 d–f)................................ endroedii Angelov
6. Funicle segments 1 and 2 subequal in length. Median sulcus of rostrum shallow or deep, with distinct keel. Dorsum covered with very sparse scales, almost glabrous..................................................................... 7
– Funicle segment 2 clearly longer than 1. Median sulcus without keel. Body covered with dense scales, or almost glabrous. 10
7. Elytral striae with conspicuously strong and deep punctures, funicle segment 4 transverse............ epiroticus Apfelbeck
– Elytral striae without conspicuously strong and deep punctures, funicle segment 4 isodiametric (Figs 2 a–b)............. 8
8. Penis parallel-sided and evenly tapering to apical fifth, its apex narrowly truncate (Figs 3 a–c). Rostral sulcus shallow. Funicle segments 4–7 of the female transverse....................................................... schlaeflini Stierlin
– Shape of penis and funicle segments of female different....................................................... 9
9. Penis parallel-sided, apical fifth regularly rounded, apex broadly truncate (Figs 3 d–f). Rostral sulcus shallow. Funicle segment 4 of the females isodiametric, 5 transverse, 6-6-7 isodiametric. Body covered with relatively dense, whitish, sometimes metallic spatulate scales......................................................................... sabbadinii Pesarini
– Penis subparallel-sided, lamella shaped, apex almost straight (Figs 3 g –i). Rostral sulcus deep. Funicle segment 4 of the females isodiametric, 5 transverse, 6-7 isodiametric. Without metallic scales, almost glabrous................... solariorum Lona
10. Elytra covered with dense metallic scales. Rostrum longer and narrower, 2.0–2.2 times longer than head, longer than wide or as long as wide....................................................................................... 11
– Body almost glabrous or glabrous, elongate, longitudinally flat. Rostrum shorter and broader, about as long as wide...... 13
11. Elytral scales broadly teardrop-shaped to subisodiametric, only very rarely more elongate. Funicle segment 1 of males 2.16 times as long as wide, 1.38 times shorter than segment 2, which is about 3 times as long as wide. Rostrum moderately wide......................................................................................... pelionis Penecke
– Elytral scales more elongate, short-oval and lanceolate intermixed, rarely drop-shaped. Rostrum moderately slender...... 12
12. Penis parallel-sided to apical fifth, tapering to broad, elongate apex, distally widely truncate (Figs 3 j–l). Dorsum of pronotum with less dense, convex, smaller granules. Hind tibiae weakly denticulate, with small granules.......... bischoffianus Lona
– Penis gradually tapering, distally widely truncate (Figs 3 m –o). Dorsum of pronotum with dense, larger, flatter granules. Hind tibiae not denticulate, without small granules................................................... excellens Kirsch
13. Elytra almost smooth, conspicuously flat and scarcely wrinkled...................................... beieri Penecke
– Elytra granulate and wrinkled, elytral setae recumbent or raised............................................... 14
14. Elytral setae recumbent, elytra strongly granulate and wrinkled................................................ 15
– Elytral setae more or less raised. Elytra more strongly granulate and wrinkled as to make striae hardly visible................................................................................................ parnassius Apfelbeck
15. Smaller (5.9-6.9 mm). Body elongate and longitudinally flat. Eyes moderately convex and larger. Elytral striae well-developed, wrinkled and with conspicuously strong and deep punctures. Interstriae narrower on the dorsum, widened on the sides, weakly wrinkled................................................................................ subfilum Reitter
– Larger (8.6-9.6 mm). Body oval to short-oval, longitudinally weakly convex. Eyes small and convex. Elytral striae with shallow punctures, striae and interstriae with larger and moderately convex granules, interstriae slightly wider than striae, more strongly wrinkled.......................................................................... pseudoschlaeflini sp. n.
description: Published as part of Szénási, Valentin, 2022, Two new species of Otiorhynchus Germar, 1822 of the subgenus Anchorrhynchus Reitter, 1914 from the Balkan Peninsula, with a key to species (Coleoptera Curculionidae: Entiminae), pp. 353-364 in Zootaxa 5209 (3) on pages 362-363, DOI: 10.11646/zootaxa.5209.3.4, http://zenodo.org/record/7329726