Key to species groups of Baldorhynchus (Di Marco & Osella, 2002)

1 Femora toothed (Fig. 1I)................................................................... B. chiarae group

1’ Femora edentate (Fig.1H)............................................................................... 2

2 Elytra with length/width ratio 1.50–1.85. Antenna with length scape/length funicle ratio> 1.............. B. ferrarii group

2’ Elytra with length/width ratio 1.85–2.10. Antenna with length scape/length funicle ratio = <1......................... 3

3 Species of small size. Total length 3.70–4.00 mm. Elytra with ten striae............................... B. kahleni group

3’ Species of medium or large size. Total length 3.80–6.00 mm. Elytra normally with eight/nine striae.................... 4

4 Species large size. Elytra oval. Total length 4.80–6.00 mm..................................................... 5

4’ Species medium or large size. Elongate ogival or oval. Total length 3.80–5.40 mm .................................. 6

5 Elytra with length/width ratio 1.93–2.05 and deep and dense punctation (Prealpi Orobie).............. B. moczarskii group

5’ Elytra with length/width ratio 1.87–1.88 and superficial and sparse punctation (Monte Grappa)............. B. danzii group

6 Pronotum length 0.80–1.10 mm with length/width ratio 1.10–1.25 (Prealpi Bresciane)................... B. blesioi group

6’ Pronotum length 1.00– 1.30 mm with length/width ratio 1.15–1.30 (Monte Baldo, Lessini).............. B. baldensis group