Entomobrya atteneri, Baquero & Jordana, 2018

Baquero, Enrique & Jordana, Rafael, 2018, Entomobrya (Collembola, Entomobryidae) for the Canary Islands, Zootaxa 4461 (2), pp. 151-195 : 164-167

Entomobrya atteneri sp. nov.

http://zoobank.org/950BAD74-98DA-4885-AF02-A404D2B44CC5

Figs 2D –D’’, 4D, 4F, 8A–G, Table 3

Type material. Holotype: female, SPAIN, Canary Islands, Tenerife, La Laguna, meadow vegetation, 25.IV.1972, es 28.49329°N, 16.30695°W, 576 m a.s.l., (Loc. 33) A. Fjellberg leg. (MZLU-VAR00001095). Paratypes (A. Fjellberg leg.): same data as Holotype, one specimen in ethyl alcohol (MZLU-VAR00001096); Tenerife, Mte. de las Mercedes, moss/lichens, on tree stems, 12.IV.1972, coordinates 28.52536°N, 16.28899°W, 725 m a.s.l., (Loc. 37) one male on slide (MZLU-VAR00001077); in vegetation, laurisilva (sweepnet), 17.IV.1972, two females on slide (MZLU-VAR00001078 and MZLU-VAR00001079) and four specimens in ethyl alcohol (MZLU-VAR00001080 to MZLU-VAR00001083); Tenerife, Anaga. Chinamada trail, Aeonium etc., rock crevices, 12.III.1987, 202/88, coordinates 28.56359°N, 16.29728°W, 500 m a.s.l., (Loc. 36) one female on slide (MZLU-VAR00001117); Tenerife, Anaga-Solís, moss/bark, conifers, 36/ 87-1, 26.VII.1987, coordinates 28.53972°N, 16.32142°W, 750 m a.s.l., (Loc. 40) one female on slide (MZLU-VAR00001118); Tenerife, Mte. de las Mercedes, Casa Forestal, rotten bark, fallen tree, 01.VIII.1987, 41/87–1, coordinates 28.54201°N, 16.22956°W, 860 m a.s.l., (Loc. 37) one female on slide (MZLU-VAR00001119) and one male on slide (MZLU-VAR00001120); Tenerife, Anaga-Pico del Ingles, in vegetation, 7.VIII.1987, coordinates 28.53431°N, 16.26526°W, 950 m a.s.l., (Loc. 39) one female on slide (MZLU-VAR00001121) and five specimens in ethyl alcohol (MZLU-VAR00001122 to MZLU-VAR00001126); Tenerife, Anaga-Cruz del Carmen, laurisilva, 8.VIII.1987, 52a/87, coordinates 28.53361°N, 16.28236°W, 930 m a.s.l., (Loc. 38) two specimens in ethyl alcohol (MZLU-VAR00001127 and MZLU-VAR00001128); Tenerife, Anaga-Pico del Ingles-Hoya Larga, 24.VIII.1987, coordinates 28.53431°N, 16.26526°W, 950 m a.s.l., (Loc. 39) one female on slide (MZLU-VAR00001129) and two specimens in ethyl alcohol (MZLU-VAR00001130 and MZLU-VAR00001131); Tenerife, Cabezo Miraval, moss/ferns, Erica trunks, 26.VIII.1987, 90/87, coordinates 28.55026°N, 16.18434°W, 750 m a.s.l., (Loc. 34) one female on slide (MZLU-VAR00001132) and 15 specimens in ethyl alcohol (MZLU-VAR00001133 to MZLU-VAR00001147); Tenerife, Teno. Los Frailes, steep slopes, grass/ Centaurea , 5.XI.1987, 216/87, coordinates 28.36605°N, 16.88583°W, 230 m a.s.l., (Loc. 30) one female and one juvenile on slide (MZLU-VAR00001148 and MZLU-VAR00001149) and one specimen in ethyl alcohol (MZLU-VAR00001150); Tenerife, Anaga-Chinamada trail, rotten Euphorbia , 15.XI.1987, 247/87, coordinates 28.56697°N, 16.30151°W, 350 m a.s.l., (Loc. 36) one female on slide (MZLU-VAR00001151). Paratypes (W. Ellis leg.): Tenerife, Anaga, El Bailadero, 5 km N, San Andrés, 25.III.1984, coordinates 28.55004°N, 16.2 0437°W, 670 m a.s.l., (Loc. 43) one female on slide (MZLU-VAR00001097) and two specimens in ethyl alcohol (MZLU-VAR00001098 to MZLU-VAR00001099); Tenerife, Taganana, 2 km S, 30.III.1984, coordinates 28.5 4348°N, 16.21814°W, 495–800 m a.s.l., (Loc. 41) one female on slide (MZLU-VAR00001100).

Additional material. A. Fjellberg leg.: La Gomera, Valle Gran Rey, Gravel slope, annuals, 3.XII.1987, 305/ 87, coordinates 28.08755°N, 17.32807°W, 600 m a.s.l., (Loc. 07) one female on slide (MZLU-VAR00001073); Tenerife, Teno, Monte del Agua, Barrio de Sibora, litter, hollow tree, 17.VIII.1987, 70/87, coordinates 28.33093°N, 16.80773°W, 950 m a.s.l., (Loc. 15) A. Fjellberg leg. (MZLU-VAR00001269), five specimens in ethyl alcohol (MZLU-VAR00001270 to MZLU-VAR00001274); Tenerife, Buenavista, lichens on rocks, 15.IV.1972, coordinates 28.35765°N, 16.84352°W, 352 m a.s.l., (Loc. 16) one female on slide (MZLU-VAR00001172) and 11 specimens in ethyl alcohol (MZLU-VAR00001173 to MZLU-VAR00001183). Tenerife, Aguamansa, litter under pine trees, 7.IV.1972, coordinates 28.36452°N, 16.49833°W, 1024 m a.s.l., (Loc. 27) one male on slide (MZLU-VAR00001168), and moss on rocks, two juveniles on slide (MZLU-VAR00001169 and MZLU-VAR00001170) and one specimen in ethyl alcohol (MZLU-VAR00001171); Tenerife, Ayosa, Adenocarpus litter, 9.XI.1987, coordinates 28.36054°N, 16.46703°W, 1980 m a.s.l., (Loc. 28) 229/87, one female on slide (MZLU-VAR00001275) and 10 specimens in ethyl alcohol (MZLU-VAR00001276 to MZLU-VAR00001285), and Ayosa-La Esperanza road, thick Sideritis litter, 2000 m, 233/87-2, one female on slide (MZLU-VAR00001286) and two specimens in ethyl alcohol (MZLU-VAR00001287 to MZLU-VAR00001288); Tenerife, Teide, fumarole E of summit, moss/grass at steam outlet, 17.V.1988, 366/88, coordinates 28.27134°N, 16.64147°W, 3530 m a.s.l., (Loc. 21) one juvenile on slide (MZLU-VAR00001289). C. G. Campos leg., all from Teide (Tenerife): 18.III.1984, coordinates 28.27324°N, 16.62521°W, 3050 m a.s.l., (Loc. 20) one female on slide (MZLU-VAR00001184) and 17 specimens in ethyl alcohol (MZLU-VAR00001185 to MZLU-VAR00001201); Bajo Alta Vista, pitfall under retama, 31.III.1984, coordinates 28.2 7324°N, 16.62521°W, 3050 m a.s.l., (Loc. 20) two females on slide (MZLU-VAR00001202 and MZLU-VAR00001230) and 27 specimens in ethyl alcohol (MZLU-VAR00001203 to MZLU-VAR00001229); Retamar, 21.IV.1984, coordinates 28.27324°N, 16.62521°W, 3050 m a.s.l., (Loc. 20) one female on slide (MZLU-VAR00001231) and 31 specimens in ethyl alcohol (MZLU-VAR00001232 to MZLU-VAR00001262); pitfall, 18.VII.1984, coordinates 28.27324°N, 16.62521°W, 3050 m a.s.l., (Loc. 20) two females on slide (MZLU-VAR00001263 and MZLU-VAR00001268) and four specimens in ethyl alcohol (MZLU-VAR00001264 to MZLU-VAR00001267). Tenerife, Aguamansa, 7.IV.1972, coordinates 28.36452°N, 16.49833°W, 1024 m a.s.l., (Loc. 27) in Eucalyptus bark, one specimen in ethyl alcohol (MZLU-VAR00001074), in litter/moss, one specimen in ethyl alcohol (MZLU-VAR00001075), in moss on rocks, one specimen in ethyl alcohol (MZLU-VAR00001076); Tenerife, Puerto de la Cruz, vegetation on sea cliffs, 19.IV.1972, coordinates 28.41695°N, 16.53605°W, 37 m a.s.l., (Loc. 29) one specimen in ethyl alcohol (MZLU-VAR00001084); Tenerife, Las Cañadas, 20.IV.1972, coordinates 28.22398°N, 16.63646°W, 2020 m a.s.l., (Loc. 22) Carex at water spring, six specimens in ethyl alcohol (MZLU-VAR00001085 to MZLU-VAR 00001090), under stones in vegetation, one female on slide (MZLU-VAR00001091) and three specimens in ethyl alcohol (MZLU-VAR00001092 to MZLU-VAR00001094); Tenerife, Las Cañadas-Mta. de Ganzarra, stony slope, plant litter, 11.VI.1988, 394/88–1, coordinates 28.21171°N, 16.68585°W, 2050 m a.s.l., (Loc. 22) one female on slide (MZLU-VAR00001153); Tenerife, Vilaflor-Las Cañadas, km 62-63, dry pine forest, litter, 11.VI.1988, 391/88–1, coordinates 28.18806°N, 16.66123°W, 2060 m a.s.l., (Loc. 22) one female on slide (MZLU-VAR00001154) and 11 specimens in ethyl alcohol (MZLU-VAR00001155 to MZLU-VAR00001165); Tenerife, Barrio de Igueste, left fork, Euphorbia balsamifera litter, 18.XII.1987, 371/87, coordinates 28.52801°N, 16.15216°W, 130 m a.s.l., (Loc. 32) one specimen in ethyl alcohol (MZLU-VAR00001152). C. G. Campos leg.: Tenerife, Teide, La Fortaleza, 19.V.1984, coordinates 28.31555°N, 16.59865°W, 2135 m a.s.l., (Loc. 19) one female on slide (MZLU-VAR00001101) and 15 specimens in ethyl alcohol (MZLU-VAR00001102 to MZLU-VAR00001116).

Description. Body length 2.41 mm, excluding antennae (mean 14 sp.). Ground colour white or very light blue, with blue pigment on lateral body (all segments), dorsolateral segments Th II to Abd IV, as two not complete stripes wider on posterior tergites, a central patch on Abd II with a truncated cone shape, other central patches on Abd I–II, and transversal bands on posterior tergites Th II—Abd III in many specimens; head with pigment on posterior lateral eyes and a dorsal V-shaped patch; on legs, pigment on distal femur and lateral tibiotarsus; antennae with pigment on Ant I tip and whole Ant II—IV ( Figs 2D –D’’ 4D, 4F).

Head. Eight eyes, GH smaller than EF. Antennae length 1.33 mm, 2.89 times the length of the head (n = 14); Ant IV with apical vesicle bilobed (trilobed in one specimen); relative length of Ant I/II/III/IV = 1/2.05/2.12/2.27. Prelabral chaetae ciliated. Labral papillae apparently with small denticulations or serrations, sometimes lateral papillae smooth ( Fig. 8E ). Lateral process of labial papilla E reaching the papilla end.

Body. Length ratio of Abd IV/III = 4.32 (n = 14). Trochanteral organ with 20–30 chaetae. Tibiotarsus not subsegmented, without smooth chaetae, except for smooth terminal chaeta on legs III. Claw with four teeth: paired at 50% (one of them larger and forward) and first unpaired at 80% from basis; dorsal teeth intermediate between basal claw and lateral teeth ( Fig. 8F ). Empodium lanceolate, with serrated external lamella in leg III from its last middle. Tenent hair clavate. Length of manubrium and dens 0.42 and 0.53 mm, respectively (n = 10). Manubrial plate with 4–6 chaetae and two pseudopores. Mucro with teeth similar in size, mucronal spine reaching tip of subapical tooth ( Fig. 8G ).

Macrochaetotaxy ( Figs 8A–D ). Simplified Mc formula: 3-2(3)-0-3-2/2-4/2-4/1-2-1/0-4-3-2-2. Head: H2 with two or three Mc (A5 and A6, A7 is sometimes absent or as mesochaeta). Mesothorax: area T1 with two Mc (m1 and m 2i); T2 with four Mc (m4, m 4i, a5 and m5). Abdomen: Abd II area A1 with two Mc (a2 and a3), area A2 with four Mc (m3, m3ep, m 3ei and m3ea); Abd III with one Mc each on areas A3 (a1) and A5 (m3), two on A4 (a2 and a3); Abd IV with four Mc on A7 (A3, B3, C1 and E1), three on A8 (A4, B4 and C2a), and two Mc on A9 (A5 and B5) and A10 (A6 and B6).

Ecology. In La Gomera, it has been found on a steep slope with herbaceous vegetation and low scrub and oriented towards the west. In Tenerife, it is common throughout the northern part of the island, over low scrub in areas of almost nude soil, and even in urban areas on the coast, although in the most eastern part of the island it has been found in forested areas ( Pinus ) and in shrubland ( Adenocarpus ), on lichens or in litter and on moss and grass in areas at high altitude near the summit of the Teide volcano.

Etymology. The name comes from the Guanche language and means ‘beautiful’.

Remarks. If the macrochaetotaxy of Abd II and Abd III is considered simultaneously, only seven species of the genus share the presence of the simplified formula for these tergites (2-4 and 1-2-1): E. arvensis Latzel, 1917 , E. kultinalensis Baijal, 1958 , E. mesopotamica Rusek, 1981 , E. palmensis Jordana & Baquero, 2010 . E. rohtangensis Baijal, 1958 sensu Yoshii, 1990 , E. striatella Börner, 1909 , E. tuvinica Jordana, Potapov & Baquero, 2011 along with three new species from the Canary Islands described in this paper ( E. achuteygai sp. nov., E. guacimarae sp. nov. and E. airami sp. nov.) Only E. arvensis , E. palmensis , E. achuteygai sp. nov., E. guacimarae sp. nov. and E. airami sp. nov. share with the new species the formula 2-4 for Th II; the new species can be differentiated from these species by the Mc formula for the Abd IV 0-0-3-2-2 for E. arvensis and 0-2-3-2-2 for E. palmensis , 0-2(3)-3-2-2 for E. achuteygai sp. nov. and E. airimii sp. nov. E. guacimarae (with identical principal chaetotaxy) is separated by five characters, and all are compared in Table 3. The colour pattern and the eye size on E. arvensis are quite different (no colour on Th II and Th III and large eyes on G&H). The colour of E. palmensis is similar but the Mc formula with chaetae on Area A6 of Abd IV is enough to separate the two species. The general colour pattern for this species could be confused with species such as E. multifasciata ( Tullberg, 1871) or the female of E. nigrocincta Denis, 1923 (both of which are present in the Canary Islands), but the Mc formula (included in this paper for the two species) allows the differentiation.

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Figures

FIGURE 2. Entomobrya habitus: A, E. achuteygai sp. nov.; B and B’, E. airami sp. nov. from La Palma; B’’, E. airami sp. nov. from Tenerife; C, E. amelahuigei sp. nov. (C’ dark form); D, E. atteneri sp. nov. (D’ dark form, D’’, clear form); E, E. fainae sp. nov. (E’ paler form); F, E. gazmirae sp. nov. (in small size intermediate colorations); G, E. grimanesae sp. nov. (G’ dark form); H, E. guacimarae sp. nov. (H’ paler form; in small size intermediate colorations). Bar = 0.5 mm.

FIGURE 8. E. atteneri sp. nov.: A, head chaetotaxy; B, Th II chaetotaxy; C, Abd II–III chaetotaxy; D, Abd IV chaetotaxy; E, labral papillae; F, claw and empodium of leg III; G, tip of dens and mucro (bar for E, F and G = 0.025 mm).