Otiorhynchus

Rafał Gosik, Peter Sprick, Jiří Skuhrovec, Magdalena Deruś & Martin Hommes, 2016, Morphology and identification of the mature larvae of several species of the genus Otiorhynchus (Coleoptera, Curculionidae, Entiminae) from Central Europe with an update of the life history tr, Zootaxa 4108 (1), pp. 1-67: 53-54

publication ID

http://doi.org/10.11646/zootaxa.4108.1.1

publication LSID

lsid:zoobank.org:pub:B802F2B1-944E-4B84-A856-8091E60D88FC

persistent identifier

http://treatment.plazi.org/id/03EB857D-FFCD-AD3F-0592-FAC643A713BA

treatment provided by

Plazi

scientific name

Otiorhynchus
status

 

Key to larvae of selected Otiorhynchus  species

In this key, we included all species described in this paper and all species hitherto described, if chaetotaxy was considered sufficiently: Otiorhynchus ligustici  , O. porcatus  , O. salicicola  (see Gosik & Sprick 2012 a), O. nodosus  (see Willis 1964) and O. cribricollis  (see Grandi 1913), Lockwood & Keifer (1930) and Rosenstiel (1987). Further comments are reported in the following chapter.

1. Prs and pds 1, 2, 4 on abdominal segment I short, filiform, and pds 3,5 long or very long ( Figs. 156–171View FIGURES 155 – 166View FIGURES 167 – 174).................... 2

- Prs and pds 1, 2, 4 on abdominal segment I thorn-like, dark brown, and pds 3,5, filiform, medium long ( Fig. 155View FIGURES 155 – 166)............................................................................ O. (Cryphiphorus) ligustici (Linnaeus)  ( Fig. 205View FIGURES 203 – 210)

2. Postdorsum on metathorax with 5 pds ( Figs. 172–174View FIGURES 167 – 174)........................................................ 3

- Postdorsum on metathorax with 4 pds ( Figs. 175–186View FIGURES 175 – 183View FIGURES 184 – 190)....................................................... 6

3. Pds 3 on metathorax 2 times shorter than pds 2 ( Fig. 172View FIGURES 167 – 174). Pds 1 on abdominal segment I almost as long as pds 2 and pds 4 ( Fig. 156View FIGURES 155 – 166). Ds 2 on abdominal segment IX distinctly longer than ds 1 and ds 3 ( Fig. 188View FIGURES 184 – 190). Postlabium covered by cuticular processes..................................................................................................... 4

- Pds 3 on metathorax visibly longer than pds 2 ( Figs. 173, 174View FIGURES 167 – 174). Pds 1 on abdominal segment I 2–3 times as long as pds 2 and pds 4 ( Figs. 157, 158View FIGURES 155 – 166). Ds 2 on abdominal segment. IX shorter than ds 1 and ds 3 ( Figs. 189, 190View FIGURES 184 – 190). Postlabium smooth, covered by cuticular processes....................................................................................... 5

4. Pronotum with 7 prns, each thoracic segment with 5 pda, setae fine, rather short ( Fig. 2View FIGURES 1 – 6)................................................................................... Otiorhynchus (Arammichnus) indefinitus Reitter  ( Fig. 203View FIGURES 203 – 210)

- Pronotum with 9 prns, each thoracic segment with 7 pda, setae well visible, relatively massive............................................................................................. O. (Arammichnus) cribricollis Gyllenhal 

5. Pds 1 and pds 2 on metathorax equal in length ( Fig. 173View FIGURES 167 – 174). Meso- and metathorax with 2 as. Body greyish to brown, cuticle espe- cially on dorsal part covered with triangular cuticular processes and more pigmented than on lateral and ventral parts. Head dark brown, almost rounded. Surfaces of labrum densely covered by thorn-like cuticular processes...................................................................................... O. (Choilisanus) raucus (Fabricius)  ( Fig. 204View FIGURES 203 – 210)

- Pds 1 on metathorax 3 times longer than pds 2 ( Fig. 174View FIGURES 167 – 174). Meso- and metathorax with 1 as. Body white to yellowish, cuticular processes very fine. Head light yellow, distinctly narrowed bilaterally. Surface of labrum smooth........................................................................................ O. (Pendragon) ovatus (Linnaeus)  ( Fig. 217View FIGURES 211 – 219)

6. Meso- and metathorax with 4 pds, identical in length ( Figs. 175–183View FIGURES 175 – 183; 175 a – 183 a)................................... 7

- Meso- and metathorax with 4 pds, different in length ( Figs. 184–187View FIGURES 184 – 190; 184 a – 187 a).................................. 15

7. Meso- and metathoracic pds 1 and pds 2 equal in length (or almost equal length), both distinctly shorter than pds 3 ( Figs. 176–183View FIGURES 175 – 183)........................................................................................... 8

- Meso- and metathoracic pds 1 as long as pds 3, both distinctly longer than pds 2 ( Fig. 175View FIGURES 175 – 183)............................................................................................... O. (Pocodalemes) crataegi Germar  ( Fig. 218View FIGURES 211 – 219)

8. Abdominal segment VIII with 5 pds (3 short and 2 long)...................................................... 9

- Abdominal segment VIII with 4 pds (2 short and 2 long) (Fig. 199).. O. (Metopiorrhynchus) singularis (Linnaeus)  ( Fig. 208View FIGURES 203 – 210)

9. Abdominal segments I –VII with only 1 long sps (Figs. 191, 192)............................................... 10

- Abdominal segments I –VII with 1 long and 1 minute sps (Figs. 193–197)....................................... 11

10. Head light yellow. Body slender, milk-white. Clypeus with 1 cls ( Fig. 63View FIGURES 62 – 66).... O. (Otiorhynchus) armadillo (Rossi)  ( Fig. 210View FIGURES 203 – 210)

- Head dark yellow. Body rather massive, yellowish. Clypeus with 2 cls ....... O. (Otiorhynchus) salicicola Stierlin  ( Fig. 216View FIGURES 211 – 219)

11. Lms 2 slightly longer (maximum 1.33 times) than lms 1 and lms 3 ( Figs. 85View FIGURES 84 – 88, 96View FIGURES 95 – 99, 107View FIGURES 106 – 110, 118View FIGURES 117 – 121).............................. 12

- Lms 2 distinctly longer (2 times) than lms 1 and lms 3 ( Fig. 74View FIGURES 73 – 77)................. O. (Otiorhynchus) aurifer Boheman  ( Fig. 211View FIGURES 211 – 219)

12. Setae of abdomen fine, transparent............................... O. (Otiorhynchus) meridionalis Gyllenhal  ( Fig. 212View FIGURES 211 – 219)

- Setae of abdomen rather massive, brown or dark yellow.................... O. (Otiorhynchus) tenebricosus  complex. 13

13. Eps 2 on abdominal segment I –VIII distinctly longer than eps 1 (at least 2 times, usually 3 times or more) (Fig. 197). Pms 3 dis- tinctly shorter than pms 1 and pms 2 ( Fig. 121View FIGURES 117 – 121)..................................... O. lugdunensis (Herbst)  ( Fig. 215View FIGURES 211 – 219)

- Eps 2 on abdominal segment I –VIII slightly longer than eps 1 (no more than 2 times, usually 1.33 times or less) (Figs. 195, 196). Pms 3 slightly shorter or of the same length as pms 1 ( Figs. 99View FIGURES 95 – 99, 110View FIGURES 106 – 110)............................................. 14

14. Pms 3 as long as pms 1 ( Fig. 99View FIGURES 95 – 99). Pronotum with 4 long and 4 medium long prns ( Fig. 90View FIGURES 89 – 94)... O. clavipes (Bonsdorff)  ( Fig. 213View FIGURES 211 – 219)

- Pms 3 slightly shorter than pms 1 ( Fig. 101View FIGURES 100 – 105). Pronotum with 4 long and 5 medium long prns ( Fig. 110View FIGURES 106 – 110)............................................................................................... O. fuscipes (Olivier)  ( Fig. 214View FIGURES 211 – 219)

15. Abdominal segment VIII with 4 (2 long and 2 short) pds (Figs. 197, 199)........................................ 16

- Abdominal segment VIII with 5 (2 long and 3 short) pds ( Fig. 28View FIGURES 23 – 28).............................................. 17

16. Labral rods short, reniform ( Fig. 53View FIGURES 51 – 55). Epipharynx with nodular cuticular processes. Clypeus with 2 very short, poorly visible cls ( Fig. 53View FIGURES 51 – 55)...................................................... O. (Nehrodistus) armatus Boheman  ( Fig. 209View FIGURES 203 – 210)

- Labral rods elongated ( Fig. 152View FIGURES 150 – 154). Epipharynx covered by thorn-like cuticular processes. Clypeus with 2 medium long cls ( Fig. 152View FIGURES 150 – 154)......................................................... O. (Zustalestus) rugosostriatus (Goeze)  ( Fig. 219View FIGURES 211 – 219)

17. Setae on body elongated, fine, transparent. Body elongated. Abdominal segment IX mostly with 4 ds (Fig. 201)......... 18

- Setae on body relatively massive, yellow or brownish. Body moderately elongated. Abdominal segment IX with 3 ds (Fig. 202).......................................................... .. O. (Dorymerus) sulcatus (Fabricius)  ( Fig. 206View FIGURES 203 – 210)

18. Clypeus with 1 medium long seta and 1 sensillum............................. O. (Postaremus) nodosus ( O.F. Müller) 

- Clypeus with 2 setae and 1 sensillum................................... O. (Lolatismus) porcatus (Herbst)  ( Fig. 207View FIGURES 203 – 210)