Entomobrya airami, Baquero & Jordana, 2018

Baquero, Enrique & Jordana, Rafael, 2018, Entomobrya (Collembola, Entomobryidae) for the Canary Islands, Zootaxa 4461 (2), pp. 151-195 : 160-162

Entomobrya airami sp. nov.

http://zoobank.org/FB9E3BC 9-2945-4 AB1-95DE-856FD665DFC8

Figs 2B –B’’, 4B, 6A–G, Table 2

Type material. Holotype: female on slide, SPAIN, Canary Islands, La Palma, Cubo de Bejalga ( Cubo de La Galga ?), in vegetation, 15.XI.1987, coordinates 28.75599°N, 17.77124°W, 500 m a.s.l., (Loc. 05) A. Machado leg. ( MZLU-VAR00001033 ) . Paratypes: same data as the Holotype, two females on slide ( MZLU-VAR00001045 and MZLU-VAR00001046 ) and 11 specimens in ethyl alcohol MZLU-VAR00001034 to MZLU-VAR00001044 ).

Additional material. Tenerife, La Laguna, University area, on water tank, 16.II.1988, coordinates 28.48186°N, 16.31699°W, 548 m a.s.l., (Loc. 33) A. Fjellberg leg., three females on slide, (MZLU-VAR00001048 to MZLU-VAR00001050); Tenerife, Pta. del Hidalgo. El Anden Colorado, moss on cliffs, 19.VII.1987, 20/87, coordinates 28.56687°N, 16.31625°W, 135 m a.s.l., (Loc. 35) A. Fjellberg leg., one female on slide (MZLU-VAR00001047); La Gomera, Ermita N.S. de Lourdes - Los Aceviños, Moss, rotten wood, 292/ 88–1, 24.III.1988, coordinates 28.12971°N, 17.22621°W, 1070 m a.s.l., (Loc. 08) A. Fjellberg leg., female on slide (MZLU-VAR00001032). La Gomera, El Cedro, ex faya ( Morella faya ), 11.IV.1974, coordinates 28.13817°N, 17.21602°W, 860 m a.s.l., (Loc. 09) A. Machado leg., 25 specimens in ethyl alcohol (MZLU-VAR00001007 to MZLU-VAR00001031).

Description. Body length up to 2.15 mm, excluding antennae (average: 2.05, n = 4). Ground colour pale brown-yellow, with dark blue pigment following two different patterns: a) pale specimens, with lateral and dorsolateral longitudinal stripes starting as individual dots on posterior Th II and Th III, interrupted on Abd II; b) darker specimens, with more or less continuous pigment on the whole lateral body, and a dorsolateral longitudinal stripe, always with a dorsal area without pigment; head without pigment on its central area, pigmented on frontal and lateral areas; legs with lateral pigment from middle femur and central tibiotarsus; antennae progressively darker towards the tip ( Figs 2B and 4B ).

Head. Eight eyes, GH smaller than EF. Antennae length 1.32 mm, 2.96 times the length of the head (n = 3); Ant IV with apical vesicle bilobed; relative length of Ant I/II/III/IV = 1/1.80/1.79/2.02. Prelabral chaetae ciliated. Labral papillae multispinose ( Fig. 6E ). Lateral process of labial papilla E 1/3 shorter than the papilla.

Body. Length ratio of Abd IV/III = 5.25 (n = 4). Trochanteral organ with approximately 25 chaetae. Tibiotarsus not sub-segmented, without smooth chaetae, except for smooth terminal chaeta on legs III. Claw with four teeth: paired at 60% and first unpaired at 75% from basis; dorsal teeth basal ( Fig. 6F ). Empodium lanceolate, with serrated external lamella in leg III. Tenent hair clavate. Length of manubrium and dens 0.43 and 0.56 mm, respectively (n = 4). Manubrial plate with 6–7 chaetae and two pseudopores. Mucro with teeth similar in size, mucronal spine reaching the tip of the subapical tooth ( Fig. 6G ).

Macrochaetotaxy ( Figs 6A–D ). Simplified Mc formula: 3-3-0-4-2/2-4/2-4/1-2-1/2-3-3-2-2. Head: H1 area with Mc An2, An3a1 and An3; H2 area with three Mc (A5–A7); H4 area with four Mc (S1, S3, S4 and S4p); H5 area with Ps2 and Ps5 Mc. Mesothorax: area T1 with two Mc (m1 and m 2i); T2 with four Mc (m4, m 4i, a5 and m5, always is present a mesochaeta a5'). Abdomen: Abd II area A1 with two Mc (a2 and a3), area A2 with up to five Mc (m3, m3ep, m3ea and m3eai2); Abd III with one Mc each on areas A3 (a1) and A5 (m3e) and two Mc on A4 (a2 and a3); Abd IV with two Mc on A6 (B1 and B e2), three Mc on A7 (A2, B2 and C1), three Mc on A8 (A4, B4 and C2a), two Mc on A9 (A5 and B5) and A10 (A6 and B6).

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Ecology. Found in different biotopes and on different islands: La Palma, forestal areas of north-east; La Gomera, Lauro novocanariensis and Persea indica , also in peripheral areas, and in areas with Brachypodium arbuscular and Juniperus canariensis , or degraded areas with Pinus canariensis or Euphorbia berthelotii ; Tenerife, shrubland areas near the city of Punta del Hidalgo, and in a garden of the University area of the city of La Laguna.

Etymology. The name means ‘freedom’ and has its origin in the name (Airam) of a prince of the Guanche ethnic group born on La Palma Island.

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 and E. tuvinica Jordana, Potapov & Baquero, 2011 , and three more that are described in this paper ( Entomobrya achuteygai sp. nov., Entomobrya atteneri sp. nov., and Entomobrya guacimarae sp. nov.), share this formula. The chaetotaxy of the head and Th II separate it from E. arvensis , E. kultinalensis , E. mesopotamica , E. rothangensis and E. striatella . The lateral process of labial papillae E, reaching 1/3 of the papilla end, separates it from E. palmensis , E. atteneri sp. nov., and E. guacimarae sp. nov. Entomobrya achutegai sp. nov. is also separated by nine different characters, as shown in Table 2.

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 4. Entomobrya colouration pattern: A, E. achuteygai sp. nov.; B, E. airami sp. nov.; C, E. amelahuigei sp. nov. (C’. E. amelahuigei sp. nov., dark form); D, E. atteneri sp. nov.; E, E. nairae sp. nov.; F, E. atteneri sp. nov. (clear form); G; E. fainae sp. nov. (G’, E. fainae sp. nov., dark form); H, E. gazmirae sp. nov.; I, E. grimanesae sp. nov. (I’, E. grimanesae sp. nov., dark form); J, E. guacimarae sp. nov. (J’, intermediate colour form; J’’, pale form); K, E. guayarminae sp. nov.; L, E. icoae sp. nov.; M, E. irayae sp. nov.; N, E. multifasciata; O, E. nigrocincta male (O’, female); P, E. palmensis; Q, E. cf. quinquelineata; R, E. irayae sp. nov. dark form; S, E. unostrigata. Bar = 0.5 mm.

FIGURE 6. E. airami 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).