The family Onychiuridae (Collembola) from karst caves of the Basque biospeleologic district, with description of four new species Author Beruete, Enrique 0000-0002-3240-8946 University of Navarra, Faculty of Sciences, Department of Environmental Biology, University Campus, 31080 Pamplona, Spain. eberuete @ yahoo. es; https: // orcid. org / 0000 - 0002 - 3240 - 8946 eberuete@yahoo.es Author Arbea, Javier I. c / Ría de Solía 3, ch. 39. 39610 El Astillero (Cantabria). Author Baquero, Enrique 0000-0002-3240-8946 University of Navarra, Faculty of Sciences, Department of Environmental Biology, University Campus, 31080 Pamplona, Spain. eberuete @ yahoo. es; https: // orcid. org / 0000 - 0002 - 3240 - 8946 & University of Navarra, Institute of Biodiversity and Environment (BIOMA), University Campus, 31080, Pamplona, Spain * corresponding author: ebaquero @ unav. es; https: // orcid. org / 0000 - 0002 - 2145 - 8606 eberuete@yahoo.es Author Jordana, Rafael 0000-0002-3240-8946 University of Navarra, Faculty of Sciences, Department of Environmental Biology, University Campus, 31080 Pamplona, Spain. eberuete @ yahoo. es; https: // orcid. org / 0000 - 0002 - 3240 - 8946 eberuete@yahoo.es text Zootaxa 2021 2021-09-21 5040 2 151 194 journal article 10.11646/zootaxa.5040.2.1 1175-5326 5531192 CC1289B1-4FF9-4369-A596-9FF260C8F314 Deuteraphorura boneti ( Gisin, 1953 ) Onychiurus handschini – Bonet, 1931 . Mem. R. Soc. Esp. Hist. Nat ., 14(4): 305 (non Denis, 1925 ) Onychiurus boneti Gisin, 1953 . Mitt. Schweiz . Entomol. Ges ., 26(1): 60 Deuteraphorura boneti (Gisin) : Arbea et al. , 2011 . Boletín de la Sociedad Entomológica Aragonesa (S.E.A.) , 48: 352 Figs 24−25 , Tables 6 and 10 Type material. Martinchurito I and II caves ( Loc. 41 ), 9.VIII.1929 , leg. Cándido Bolívar y Federico Bonet, as sintypes of Onychiurus boneti , Lectotype female, designated herein slide MNCN_Ent 89367; Paralectotypes : 1 female and 1 male on the same slide as lectotype ( Fig. 25 ); 9 paralectotypes on the slides MNCN89364 ( 1 male ), MNCN_Ent 89365 ( 1 female subadult and 1 juvenile ), MNCN_Ent 89366 ( 1 female ), MNCN_Ent 89368 ( 2 females ), MNCN_Ent 89371 ( 1 female ), MNCN_Ent 89372 ( 1 female ) and MNCN_Ent 89374 ( 1 male ). Redescription. Whitish body. Length (without antennae) 1.2–1.3mm (females and males). Cuticular granulation fine and uniform. Dorsal pso formula as 3,4/1,3,3/3–4,4–5,4,5,4; Abd III tergite with 4 pairs of pso (a, a’, b’, c). Ventral pso formula as 1,2/0,1,1/3 +1,1–2,1–2,2; Abd I sternite with 3 pso on each side of the VT, and 1 +1 anterior pso; Abd II–III with the medial pso sometimes missing. Each subcoxa 1 of the legs I−III with 2 pso. Neither psx nor psp could be distinguished. Head. Antennae slightly shorter than the head; ratio length of the antenna/cephalic diagonal 0.70–0.80. Ant IV with subapical organite, and ms basolateral located above the first proximal row of chaetae. AIIIO composed of 5 papillae, 5 guard chaetae, 2 small internal sensilla, and 2 curved, smooth and ribbed sensory clubs; the lateral ms is located just behind the sense organ. Ant I−III with 8, 13−14, and 16 ordinary chaetae, respectively. Poorly delimited antennal base, with finer granulation. PAO with 12–14 compound vesicles arranged in two rows. Dorsal cephalic chaeta d 0 present ( Fig. 24 ). Maxillary palp simple, with 1 basal and 2 sublobal chaetae. Labral formula 4/342. Labium type AB, with 6 proximal, 4 basomedial (E, F, G, f), and 5 basolateral (b, c, d, e, e’) chaetae. Postlabium with 4 +4 chaetae along the ventral groove . FIGURES 24−25. Deuteraphorura boneti . 24 , dorsal view of a lectotype; 25 , lectotype microscope slide. Scale: 0.2 mm. TABLE 6. Deuteraphorura boneti . Dorsal chaetotaxy. Abbreviations: me, meso-; mi, micro-; M, macrochaeta; s, chaeta-s (sensillum); “–“, absent; “()”, present or absent.

0	1	2	3	4	5	6	7
Head
a	M
d	me	me	M	me	me	–	–
sd	–	me	me	me	me	M	–
sd’	–	me	me	–	me	me	–
v	–	me	M	me	M	–	–
ca	–	–	–	–	–	–	s
cm	–	–	–	me	me	M	me
cb	–	mi	M	–	–	mi	s
cp	–	mi	–	–	mi	–	mi
p	–	–	mi	M	mi	M	me
Th I
m	–	–	–	me	–	me	–
p	M	–	me	–	M	–	M
Th II−III
a	mi	me	me	(me)	me	me	M
m	–	M	–	me	–	M	s+ms
ca	mi	–	mi	–	s	mi	–
p	–	me	M	mi	M	me	M
Abd I
a	mi	–	–	me	–	–	me
m	–	M	–	me	–	M	–
ca	mi	–	–	–	s	–	–
p	–	me	mi	M	(me)	–	M
Abd II–III
a	mi	–	(M)	me	–	me	me
m	–	M	–	me	–	M	–
ca	mi	–	–	–	s	–	–
p	–	me	mi	M	me	M	M
Abd IV
a	–	me	–	me	me	–	M
m	mi	–	mi	–	me	–	–
ca	–	M	–	me	–	–	me
cp	–	–	–	–	s	–	me
p	me	mi	–	mi	–	M	me	M
Abd V
a	–	M	mi	me	me	M	–
m	mi	–	–	–	s	mi	–
p	–	M	s	–	M	–	M
Abd VI
a	M	mi	me	s
m	me	M
p	mi	M	M

Dorsal body chaetotaxy according to Table 6 and Fig. 24 . Chaetae-s not differentiated from ordinary ones. Th II–III tergites with lateral ms. The axial chaetotaxy of Th II to AbdV tergites as 2,2/2,2,2,2,1 pairs of pointed microchaetae. Abd IV tergite with an axial unpaired chaeta (p 0 ); AbdV without axial unpaired chaetae; AbdVI with a blunt axial macrochaeta (a 0 ) ( Fig. 24 ). AbdV tergite p 2 is a short macrochaeta; ratio p 2 :P 5 =0.69−0.80. Th I−III sternites without chaetae. VT with 6−8+ 6−8 distal chaetae, anterior and basal chaetae absent. Furcal vestige reduced to a finely granulated area, with 4 posterior dental microchaetae and two rows of manubrial chaetae; mm row with 1+1(2) and mp row with 2+2 chaetae, of which the outer ones are macrochaetae. Genital plate with 15−22 chaetae and 2 posterior microchaetae in females, and about 40 chaetae on males. Males with ventral organ formed by thick chaetae blunt and rough, in the males of big size: 2 on the Abd II sternite and 7−8 on the Abd III sternite. Anal valves with numerous acuminate chaetae; each lateral valve with a 0 y 2a 1 ; posterior valve with a 0 , 2b 1 , 2b 2 , c 0 , 2c 1 y 2c 2 . Legs. Subcoxae 1 of legs I−III with 3,4,4 chaetae, sub−coxae 2 with 0,3,3 chaetae, coxae with 2−3,10,12−13, trochanters with 9,8−9,7−8, and femurs with 14−15,14−15,13−14 chaetae, respectively. Tibiotarsi of the legs I−III with 18 (9,8,1), 18 (9,8,1) and 17 (9,7,1) chaetae, respectively. Claw without internal or lateral teeth. The empodial appendix reaches 60% of the inner edge of the claw, with a narrow basal lamella reaching 50% of its length. Discussion. D. boneti is identified by the combination of characters shown in Table 10 . It is separated from the closest species, D. akelaris , by the greater development of the posterior abdominal tergite chaetae, especially by the development of the p 2 AbdV macrochaeta, almost the same size as p 5 (see discussion in D. akelaris ). Distribution and ecology. Troglobiont species only known from the type locality, Martinchurito cave, in the Sierra de Aralar, Navarra ( Bonet 1931 as O. handschini ). All subsequent records of this species ( Jordana et al. 1997 , Beruete 2000a , Beruete et al. 2001 ) actually correspond to the species D. akelaris .