Roncus (Zaragoza, 2008)

Zaragoza, Juan & Henderickx, Hans, 2009, Roncus elbulli (Arachnida, Pseudoscorpiones), a new species from Cap de Creus Nature Park (Catalonia, Spain), with a key to the Spanish species of the genus Roncus, ZooKeys 8 (8), pp. 19-34 : 30-31

Key to the Spanish species of the genus Roncus

Note: Roncus caballeroi Lagar, 1974 , is not included because the original description is insuffi cient and does not give measurements.

1 Species with roncoid facies, epigean or troglophile, eyes present with more or less flattened lenses, palps robust................................................................. 2

– Species with parablothroid facies, troglobitic, eyes reduced to spots or absent, palps slender ............................................................................................. 10

2 Palpal femur 2.89-3.54 times longer than broad ......................................... 3

– Palpal femur 3.80-4.80 times longer than broad ......................................... 7

3 Chela with microsetae proximal to trichobothrium eb .................................. ................................................................... Roncus lubricus L. Koch, 1873 (epigean; NW Europe; presence in Spain doubtful, due to misidentification).

– Chela without microsetae proximal to trichobothrium eb ........................... 4

4 Palpal chela about 1.80 mm long, femur about 1.00 mm long...................... ..................................................................... Roncus pugnax (Navás, 1918) (epigean; provinces of Barcelona, Castellón, Gerona, Tarragona, Valencia, Zaragoza and Balearic islands)

– Palpal chela 1.10-1.40 mm long, femur 0.56-0.82 mm long....................... 5

5 Carapace as long as broad, epistome prominent and pointed ........................ .............................................................. Roncus caralitanus Gardini, 1981 (epigean; Sardinia, Sicily; doubtful presence in Balearic islands).

– Carapace longer than broad (about 1.20×), epistome low or moderately prominent................................................................................................... 6

6 Chela about 3.00 times longer than broad and femur about 0.60 mm long in males, chela with 0-2 microsetae below trichobothria eb -esb.......................... .................................................................................... Roncus elbulli sp. n. (epigean; province of Gerona)

– Chela about 3.35 longer than broad and femur about 0.70 mm long in males, chela with 3-4 microsetae below trichobothria eb -esb .................................... .............................................................. Roncus cadinensis Zaragoza, 2007 (epigean; province of Barcelona)

7 Palpal femur longer than 1.00 mm (1.07-1.55), patella and hand about 1.00 mm long.......................................... Roncus neotropicus Redikorzev, 1937 (epigean and troglophilic; Balearic islands)

– Palpal femur 1.00 mm long or shorter, patella and hand about 0.80 mm long or less.......................................................................................................... 8

8 Chelal microsetae pattern with increased number of microsetae (8-10) below eb -esb ................................. Roncus judsoni Henderickx & Zaragoza, 2005 (troglophilic; province of Gerona)

– Chela with 2-5 microsetae below eb-esb ...................................................... 9

9 Palpal femur at most 4.00 times longer than broad in males (0.72-0.73 mm long); chela 1.17-1.28 mm long; chela with 4-5 microsetae below eb -esb ...... ................................. Roncus montsenyensis Zaragoza & Šťáhlavský, 2008 (epigean; province of Gerona)

– Palpal femur 4.24-4.30 times longer than broad in males (0.84-0.98 mm long); chela 1.47-1.69 mm long; chela with 2-4 microsetae below eb -esb ...... ................................................................... Roncus duboscqi Vachon, 1937 (epigean; France; doubtful records from Spanish provinces: Barcelona, Gerona)

10 Larger number of setae on carapace (about 50) ............................................ ............. Roncus setosus Zaragoza, 1982 (troglobitic; province of Alicante)

– Lower number of setae on carapace (maximum 25) .................................. 11

11 Small species, palpal femur 1.00 mm long or less...................................... 12

– Large species, palpal femur 1.18-1.83 mm long ........................................ 13

12 Palpal femur 4.65 times longer than broad and longer than chelal finger ...... .......................................................................... Roncus bellesi Lagar, 1972 (troglobitic; province of Lérida)

– Palpal femur 5.20 times longer than broad and as long as chelal finger ......... ....................................................................... Roncus juvencus Beier, 1939 (troglobitic; province of Tarragona)

13 Epistome low, chelal femur 6.20-6.50 times longer than broad (1.72-1.83 mm long), chela with pedicel 5.40 times longer than broad.......................... ........................................................................... Roncus lagari Beier, 1971 (troglobitic; province of Tarragona)

– Epistome prominent, chelal femur 4.09-5.40 times longer than broad (1.18- 1.59 mm long), chela with pedicel 3.41-5.10 times longer than broad...... 14

14 Palpal trochanter without tubercle ................. Roncus hibericus Beier, 1939 (troglobitic; province of Barcelona)

– Palpal trochanter with more or less prominent tubercle............................. 15

15 Palpal femur clearly shorter than the chelal finger, femur 5.10-5.40 times longer than broad (1.29-1.54 mm long), finger 1.40-1.60 mm long............. ............................. Roncus vidali Lagar, 1972 (troglobitic; Balearic islands)

– Palpal femur as long or longer than the chelal finger ................................. 16

16 Palps moderately slender: palpal femur longer than the finger and 4.09-4.49 longer than broad (1.26-1.33 mm long); patella 2.52-2.62 times longer than broad (0.99-1.15 mm long), chelal hand 1.55-1.59 times longer than broad (0.90-1.06 mm long) .............................. Roncus boneti boneti Beier, 1931 (troglobitic; province of Alicante)

– Palps slender: palpal femur same length as finger and 4.83-5.25 times longer than broad (1.42-1.48 mm long), patella 2.96-3.14 times longer than broad (1.18-1.23 mm long), chelal hand 1.87-2.01 times longer than broad (1.15 mm long)...................................... Roncus boneti tarbenae Mahnert, 1977 (troglobitic; province of Alicante)