Bordoniola Osella, 1987

Baviera, Cosimo, Bellò, Cesare & Osella, Giuseppe, 2012, First record of the genus Bordoniola Osella, 1987 in Ecuador with description of five new species (Coleoptera: Curculionidae, Raymondionyminae), Zootaxa 3455, pp. 69-80 : 79

Key for the determination of species of Bordoniola Osella, 1987

1. Protibia toothed on the inner margin, not toothed on the outer margin, pronotum with midline without punctures, elytral intervals flat, with long bristles arranged perpendicularly at angle of about 90Ο. Length (with rostrum) 1.50–1.60 mm Venezuela........................................................................................... 2

- Protibia expanded, serrate on outer margin, with inner side more or less straight; pronotum with variable punctuation without smooth midline, elytral intervals two and three flat, elytral bristles usually present, raised at angle less than 90Ο. Length (with rostrum): 1.05–1.65 mm. Ecuador........................................................................ 3

2. Punctation of pronotum with large areolas between points, neatly arranged, first and second elytral striae with punctures present anterior to declivity, absent posterior to declivity; rostrum with two rows of punctures between the head and antennae. Length: 1.60 mm. Venezuela (Trujllo, Bocono)........................................ B. minutissima Osella, 1987

- Punctation of pronotum with areolas small and irregularly arranged, first elytral stria evanescent, punctation of second elytral stria regular up to the middle of disc. Length 1.50 mm. Venezuela (Parque Nacional Rancho Grande)... B. decui Osella, 1987

3. Rostrum between head and antennae, striped-rough, pronotum sub-cylindrical with dense, round punctures, elytral intervals two and three keel-like, striae two and three with well-defined punctures.......................................... 4

- Rostrum between head and antennae, smooth or with a hint of keels, pronotum cylindrical, elytral intervals two and three effaced.............................................................................................. 5

4. Rostrum more strongly striate, wrinkled, pronotum appreciably expanded-at midlength, with punctures separated; elytral intervals two and three visible, protibiae weakly serrate on the outer margin, elytra slightly expanded towards the middle, about 2.5 times longer than wide. Length 1.5 mm. Ecuador, San Jose de Minas (Pichincha).......... B. ecuadorialis n. sp.

- Rostrum only partially striate, pronotum sub-cylindrical, medially barely wider than at both ends, with various punctation; elytra about 3 times longer than wide. Length 1.65 mm. Ecuador, Otonga (Pichincha)................. B. otongana n. sp.

5. Elytral interval two impressed, body shining over entire surface, pronotum sub-parallel, elytra with short bristles. Length 1.30 mm. Chiriboga (Pichincha).................................................................. B. relicta n. sp.

- Elytral interval two not impressed, elytral bristles long........................................................ 6

6 Pronotum almost sub-cylindrical, with fine punctuation, punctures separated by flat spaces, rostrum slightly expanded apically. Length 1.10 mm. Nono (Pichincha).......................................................... B. simillima n.sp.

- Pronotum medially slightly expanded with large punctures, elytral striae two and three with small punctures, third elytral interval imperceptibly longer than the second, profemora slightly serrated on the outer margin. Length 1.06 mm. Nanegalito (Pichincha).............................................................................. B. minima n. sp.