Eukoenenia patrizii iberica, Barranco, P. & Mayoral, J. G., 2014

Barranco, P. & Mayoral, J. G., 2014, New palpigrades (Arachnida, Eukoeneniidae) from the Iberian Peninsula, Zootaxa 3826 (3), pp. 544-562 : 545-548

Eukoenenia patrizii iberica ssp. nov.

( Figs. 1 –11, Table 1 )

Material examined. Holotype ♂, Cova dels Encenalls [UTM 31TBE 638803], Sant Mateu, Castellón, Spain, 21- III-2003, leg. S. Montagud. Deposited in Museo Nacional de Ciencias Naturales de Madrid ( MNCN 20.02/17285).

FIGURES 8–11. Eukoenenia patrizii iberica ssp. nov., holotype. 8, basitarsi 3–4, leg I; 9, basitarsus, leg IV; 10, opisthosoma, ventral view (setae a1–4 foreshortened); 11, male genital region. Scale bars: 8 = 200 µm; 9–11 = 100 µm.

Description of male. Total length (without flagellum) 1841 µm. Prosoma. Frontal organ with 2 granulated branches and pointed tips, each 1.3 times longer than wide ( Fig. 1 ). Lateral organ with 11 blades, each granulate and distally pointed ( Fig. 2 ). Propeltidium with 10 + 10 setae. Metapeltidium with 3 + 3 setae. Hand of chelicera with 6 dorsal and one ventral seta, each finger with 9 teeth. Sternum with 10 deuto-tritosternal setae, two of them smaller than the others. Chaetotaxy of coxae: pedipalp with 17 setae; coxa I with 14 setae, coxa II with 16 setae, 11 normal + 5 thick, coxa III with 16 setae, 7 normal + 9 thick, coxa IV with 15 setae, 7 normal + 8 thick ( Figs 3–7 ). Leg I: basitarsus 3 with 3 setae, (Fig. 8) (this segment was damaged in the mounting process; drawing was made beforehand); Ibta4 with one trichobothrium, five long, thin setae and one forked seta at distal end. Leg IV: basitarsus 4 with 7 setae (2 esd, 2 esp, gla, grt and r) (Fig. 9), bta / ti 0.91; seta r more than 2.5 times shorter than dorsal edge of segment (268/108 µm, t / r = 2.48) and inserted slightly beyond the middle of the segment; esp setae inserted about 1/3 from base; gla inserted more or less at the same level as grt. Opisthosoma: Tergites II–VI with 3 + 3 setae each, two setae t and one slender lateral seta s on each half; tergite VII–VIII with 2 + 2 (a single t and s seta on each side). Sternites II–III each with 2 + 2 setae. Sternites IV–V with 6 + 6, inner ones (a1, a2, a3, a4) shorter than the others (s1,s2). Sternite VI with 5+4 setae. Sternites VII with 3 + 3 slender setae (Fig. 10). Segments VIII–XI with 9, 8, 8 and 8 setae, respectively. Total length of pedipalp, 1501; total length of Leg IV, 1455.

Genital region of the male (Figs. 11): With 3 pairs of lobes and a total of 42 setae. First lobe short and broad, continuous and without medial cleavage; 13 + 13 setae in four rows, first row 2 + 2 (ventrals), second row 4 + 4, third row 4 + 4, fourth row 3 + 3 (1 seta + 2 fusules at each side). Fusules long, close to each other, dilated in first 2/3 and setulose in last 1/3. Second lobe large, end thin and pointed, with 5 + 5 setae (a, b, c, c ′, d); third lobe with large, pointed apex, with 3 + 3 setae (x, y, z).

Female. Unknown.

Remarks. The chaetotaxy, shape of genital lobes and the morphometric data of this male resemble those of the male of E. patrizii Condé, 1993 , described from Sardinia ( Condé 1993). However, we found some differences between them that justify the recognition of a new subspecies for the male from Cova dels Encenalls.

The ventral chaetotaxy on segments IV–V is identical in the two subspecies, but E. patrizii patrizii carries 2+2 setae on tergites II–V, whereas the new subspecies carries 3+3. E. patrizii iberica ssp. nov. has (5+4) setae on sternite VI, whereas E. patrizii patrizii has (6+6). E. patrizii iberica s sp. nov. has 8, 8, 8 setae on segments IX, X and XI, while E. patrizii patrizii has 6, 6, 8. The fact that the new subspecies carries three setae on each side on tergites II–V is quite significant: there are only two taxa of palpigrades with a dorsal chaetotaxy of 2+2, namely E. patrizii patrizii and E. gasparoi . In E. patrizii patrizii , both pairs of setae are of equal length on tergite II; but the external pair on tergites III–V is thinner than the medial pair and about half its length ( Condé 1956). E. gasparoi carries a pair of medial t3 setae between the s setae ( Condé 1988).

In the new subspecies setae r and grt on btaIV are longer than those of the male of E. patrizii patrizii (r 108 vs. 87; grt 170 vs. 132). In addition, the Spanish male carries 11 blades in the lateral organ, as opposed to 8–10 in in E. patrizii patrizii ( Condé 1956; Condé 1993). Both subspecies lack w setae on the third lobe of the genitalia.

Figures

FIGURES 1 – 7. Eukoenenia patrizii iberica ssp. nov., holotype. 1, frontal organ, dorsal view; 2, lateral organ, dorsal view; 3, pedipalp coxa; 4, coxa II; 5, coxa IV; 6, coxa III; 7, coxa I; Scale bars: 1 – 2 = 50 µm; 3 – 7 = 100 µm.

Tables

TABLE 1. Morphometric data (in micrometres) and ratios for adults of Eukoenenia patrizii iberica ssp. nov., Eukoenenia montagudi sp. nov., Eukoenenia sendrai sp. nov. and Eukoenenia valencianus sp. nov. Missing data due to damage or missing segments. Abbreviations: Imm, immature; CE, Cova dels Encenalls; CC: Cova Cirat; CM, Cova de las Meravelles; CD, Cova Dones; CA, Cova de l'Alt del Pi.

	E. p. iberica	E. montagudi	E. sendrai	E. valencianus
	♂ CE	♀ CC	♀ CM	♂ CD ♂ CD ♀ CD ♀ CD Imm. CA
L	1841	1357	1409	1504 1557 1525 1472 1462
B	479	357	352	384 384 405 395 368
Ptr	205	126	155	150 160 160 160 143
Pfe	273	184	230	235 238 255 228 212
Pge	237	137	155	177 168 175 170 148
Pti	292	155	200	195 200 210 190 185
Pbta1	95	58	73	70 65 68 70 70
Pbta2	150	78	103	93 93 115 95 88
Pta1	78	40	55	60 60 55 63 63
Pta2	80	43	63	70 68 70 60 63
Pta3	92	60	80	80 78 83 80 80
Itr	305	200	198	205 205 212 198 158
Ibf	357	226	250	255 260 268 250 225
Itf	252	152	188	175 178 183 168 160
Ige	326	179	245	233 240 240 223 203
Iti	298	180	240	225 233 240 220 215
Ibta1+2	-	145	188	192 185 193 188 163
Ibta3	-	78	105	113 110 120 103 105
Ibta4	-	58	68	65 68 68 65 58
Ita1	-	38	58	55 58 60 55 45
Ita2	-	43	65	63 60 60 63 58
Ita3	-	138	178	182 183 183 178 175
IVtr	158	110	120	130 130 143 130 128
IVbf	142	131	135	150 150 155 150 143
IVtf	205	194	190	200 205 210 195 195
IVge	184	158	172	186 185 188 180 178
IVti	293	165	193	190 195 210 180 187
IVbta	268	183	190	202 200 205 193 185
IVta1	95	63	75	68 68 70 70 73
IVta2	110	88	93	88 85 88 90 98
a	25	20	20	23 23 23 18 25
er	170	95	100	113 110 110 108 93
grt	170	90	108	110 105 113 113 100
gla	115	85	85	90 93 100 98 98
r	108	85	98	80 93 103 93 95
t/r	2.49	2.15	1.95	2.53 2.16 2.00 2.09 1.95
t/er	1.58	1.92	1.90	1.80 1.82 1.86 1.80 1.99
gla/grt	0.68	0.94	0.79	0.82 0.88 0.89 0.87 0.98
B/bta	1.79	1.96	1.85	1.90 1.92 1.98 2.04 1.99
bta/ti	0.91	1.11	0.99	1.06 1.03 0.98 1.07 0.99
Ofm	1.27	1.2	3.25