Tychiini, Gistel, 1848

Caldara, Roberto, 2017, Morphological evidence from immature stages further suggests Lignyodina being close to Tychiina (Coleoptera, Curculionidae, Curculioninae, Tychiini), Zootaxa 4320 (3), pp. 426-446 : 441

Key to immature stages of the tribe Tychiini

ThE fOLLOWINg kEyS ARE bASEd ON ThREE (TEchNIcALLy, fOuR) kNOWN dEScRIPTIONS Of IMMATuRE STAgES Of ThE gENuS Lignyodes (SEE AbOvE KEy TO ThE IMMATuRES Of ThE SubgENERA Of ThE gENuS Lignyodes ), SIX Sibinia SPEcIES (SkuhROvEc et al. 2015) ANd 17 Tychius SPEcIES (SkuhROvEc et al. 2014). FuRThER cOMMENTS ARE REPORTEd IN ThE DIScuSSION (SEE ALSO TAbLE 4).

LARvAE

1. Frons with very long fs4 and short or very short fs5. Meso- and metathorax with 4 pds. Abdominal segments I–VII with 5 pds ............................................................................................. Lignyodes

- Frons with long fs4 and fs5. Meso- and metathorax with 2–3 pds. Abdominal segments I–VII with 2–4 pds .............. 2

2. Labium with 3 pms .............................................................................. Tychius

- Labium with only 2 pms .......................................................................... Sibinia