Eukoenenia indalica Mayoral & Barranco, 2017, sp. nov.
Creators: name: Mayoral, J. G.
name: Barranco, P.
Publisher: name: Zenodo
Year: 2017
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Palpigradi
Eukoeneniidae
Eukoenenia
Eukoenenia indalica

description: Eukoenenia indalica sp. nov.
(Figs. 1‒15)
Material examined. Holotype ♀, Cueva de la Corraliza, T.M de Fondón, Sierra de Gádor, Almería (UTM 30SWF X515000 Y4087000 Z1710), 18 March 2000, D. Ortega & J. Amate leg. Deposited in Universidad de Almeria (UAL-Pp-006).
Description of female. Prosoma. Frontal organ with two elongated and granulate branches with subparallel borders, 1.6 times longer than wide (Fig. 1). Lateral organ with one pointed, granulate blade, more than 1.45 times longer than wide (32/~22; width of lateral organ distorted due to compression of the specimen during mounting). Propeltidium with 10 + 10 short setae. Metapeltidium with 3 + 3 setae, t1 (64) and t3 (74) shorter than t2 (120) (Fig. 2). Hand of chelicera with 6 dorsal and one ventral seta, each finger with 9 teeth. Basal segment of the chelicera with three setae in distal series (d1‒d3): d3> d2> d1; setae d1 and d3 tapering, with small setules along their length; d3 1.7 times longer than d1; d1 much thinner than d2 and d3; d2 (middle seta) thickened, with subparallel borders, tiny setules and a crown of spines on the truncated tip. Sternum with 11 deuto-tritosternal setae arranged in two irregular transverse rows: anterior row with 5 setae and posterior row with 6.
Chaetotaxy of coxae. Pedipalp coxa with 19 setae of different lengths (Fig. 3). Coxa I with 15 setae: 10 long, 3 shorter ones and 2 microsetae (Fig. 4). Coxa II with 13 setae: 4 thickened and 9 normal (Fig. 5). Coxa III with 11 setae: 4 thickened setae, one long macroseta and 6 normal setae (Fig. 6). Coxa IV with 14 setae: 2 thickened and 12 normal (Fig. 7). Thickened setae on coxae tapering, with a minute, obliquely projecting spine at the truncated tip.
Palp (Figs 8‒9): ta3 with 10 normal setae, 2 bifurcate setae (fs), 1 curved seta (cs), 4 macrosetae and seta r; ta2 with 3 normal setae and 3 macrosetae; ta1 with 2 normal setae; bta2 with 4 normal setae and 2 macrosetae; bta1 with 3 setae; ti with 9 setae; fe with 8 setae; tc with 7 setae.
Leg I (Figs 10‒12): ta3 with 15 normal setae, 3 macrosetae, 2 bifurcate setae (fs) with equal branches and r; ta2 with 5 normal setae, 1 trichobothrium (tb) and 1 bifurcate seta (fs) with equal branches; ta1 with 5 normal setae, one considerably smaller than the others; bta4 with 5 normal setae, 1 tb and 1 fs with unequal branches; bta3 with r, grt and 1 microseta; bta2 with 4 normal setae, 2 tb, and 1 fs with equal branches; bta1 with 2 normal setae, 2 tb and 1 fs with unequal branches; ti with 9 normal setae; pa with 9 normal setae and 1 tb; fe with 9 normal setae; tc with 11 normal setae, two of which are considerably smaller than the others.
Basitarsus of leg IV (IVbta) (Fig. 13) with seven setae: 2 esd inserted most distally; gla, 2 esp and r approximately in the middle of segment; esd and esp with a small spine at its base (characteristic of macrosetae); grt proximad of the other setae, with a small and sharp spine at its base. Lengths and ratios given in measurements below.
Opisthosoma. Tergites II–VII each with 3 + 3 dorsal setae: t1, t3 and one slender lateral seta s on each side. Sternite III with 2 + 2 setae. Sternites IV and V with 3 + 3 setae, inner ones (a1, a2) 75 long and s1 45 long. Sternite VI with a wart-like structure in medial plane of segment bearing 4 thickened setae, medial 2 setae (a1) 50 long and lateral ones (a2) 63 long. The setae s1 on each side of wart-like structure are 58 long (Fig. 14). Sternite VII with 3+3 setae, a1 80, a2 60 and s1 40 long. Segments VIII–XI with 10, 6, 6 and 8 setae, respectively. Flagellum not preserved.
Genital region. Two lobes with a total of 22 setae. First lobe with 9 + 9 setae in 5 transverse rows: 1 + 1, 1 + 1, 1 + 1, 1 + 1, and 4 + 4 on posterior margin of lobe; of these, a3 and a4 (34‒38) are approximately twice the length of a1 and a2 (18). Posterior margin of first genital lobe without serrations and with a rounded median indentation between a1 setae. The two halves of the second lobe each with 2 setae (y and z) of about the same length (33 and 30‒32) inserted near the tip (Fig. 15).
Measurements. Body: B 460, Palp: Pcx 140, Ptc 203, Pfe 238, Pti 213, Pbta1 80, Pbta2 83, Pta1 45, Pta2 50, Pta3 70. Leg I: Icx 192, Itc 278, Itfe 238, Ipa 238, Iti 213, Ibta1+2 180, Ibta3 88, Ibta4 70, Ita1 43, Ita2 53, Ita3 178. Leg IV: IVcx 150, IVtc 212, IVfe 330, IVpa 232, IVti 313, IVbta 270, IVta1 80, IVta2 85, a 20, er 125, grt 153, gla 120, r 73, esd 78‒80, esp 93‒95, t/r 3.69, t/er 2.16, gla/grt 0.78, B/bta 1.70, bta/ti 0.86.
Male. Unknown.
Etymology. This species is named after the Indalo, a Neolithic representation of an anthropomorphic figure holding a rainbow/arch, depicted at the entrance of a few caves in the northern part of the province of Almeria (Spain), in which the holotype was captured.
description: Published as part of Mayoral, J. G. & Barranco, P., 2017, A remarkable new palpigrade (Arachnida) of the Eukoenenia mirabilis group from Spain, pp. 357-366 in Zootaxa 4290 (2) on pages 358-361, DOI: 10.11646/zootaxa.4290.2.5, http://zenodo.org/record/829113