Pseudosinella gonzaloi Baquero & Jordana, 2021

Baquero, Enrique, Jordana, Rafael & Ortuño, Vicente M., 2021, Distinctive Collembola Communities in the Mesovoid Shallow Substratum: Entomobryomorpha of the Sierra de Guadarrama National Park (Central Spain), Zoosystema 43 (3), pp. 37-78 : 72-74

Pseudosinella gonzaloi Baquero & Jordana n. sp.

( Figs 8H ; 23 ; 24 ; 25 ; Table 6 )

urn:lsid:zoobank.org:act:F654BD91-F781-45FA-9918-ABF26C6C7EE4

TYPE MATERIAL. — Holotype. Spain • ♂; Segovia, Sierra de Guadarrama, Siete Picos-La Mujer Muerta , Umbría de la Mujer Muerta (North); 30 T 4068 45192; 1622 m a.s.l.; 17.XI.2015; Ortuño et al. leg.; pitfall SSD (since 21.V.2015); MZNA SSD-3 (slide 01).

Paratypes. Spain • 1 ♀; same data as for holotype, slide 01; Ortuño et al. leg.; MZNA • 6 juveniles; SSD-2 , slide 04; same data; MZNA • 1 ♀ on slide and 257 in ethyl alcohol; SSD-11 , slide 05; same data; MZNA • 10 specimens in ethyl alcohol; SSD-11 ; same data; MNHN .

TYPE LOCALITY. — Spain, Segovia, Sierra de Guadarrama, Siete Picos-La Mujer Muerta, Umbría de la Mujer Muerta (North); 30T 4068 45192; 1622 m a.s.l.

ETYMOLOGY. — This species is dedicated to the biologist Gonzalo Pérez-Suárez, member of the research team for this project and active participant in the sampling of the mesovoid shallow substratum.

ADDITIONAL MATERIAL. — Spain • 4 juveniles and 600 (approximately) in ethyl alcohol; SSD-16 , slide 08; Sierra de Guadarrama , Segovia; Ortuño et al. leg.; MZNA • 4 ♀, 1♂ and 19 in ethyl alcohol; SSD-25 , slides 05, 06; same data; MZNA • 2 juveniles; SSD-26 , slide 09; same data; MZNA .

DIAGNOSIS. — Body with blue pigment, including antennae and first leg segments, as in Figure 8H . Head with 6 + 6 eyes (A-F); Mc A 0, A 1 and A 2 present, A 1a present; t and p chaetae present (p as Mc); basomedian labial fields chaetae smooth; posterior labial row with M 1, M 2, R*, E, L 1 and L 2 Mc (R half to two thirds of M); two or three anterior postlabial chaetae as ciliated Mc. Th II- III without Mc; Abd II with chaeta a 2p present, a 3 forward from ‘as’ sensilla; a 2 as mes or short Mc, and m 3 as ciliated Mc; AbdIV with three median mac (C 1, B 5-6), four ciliated (some fan-shaped) mic behind anterior bothriotrichum and bothriothrichal complex mic D 1p present; claw with four internal teeth: two basal and two unpaired; empodium acuminate; manubrial plate with 3 internal and 6-9 external chaetae.

DESCRIPTION

Body

Body length up to 1.80 mm, head included (mean 1.55 mm, n = 8 adults), excluding antennae (holotype: 1.40 mm). Color blue dark, especially on Ant I-IV, head vertex, and posterior area of the tergites Abd I-Abd VI), coxae, dorsal and basal manubrium; ThII darker at front area. Scales absent on antennae and legs, present on ventral and dorsal head, thorax and abdomen dorsally, and furcula only ventrally.

Head

Antennal head ratio 1.60 (n =2). Ant IV without apical bulb, apical organite and accessory sensilla present ( Fig. 23A ); three types of sensilla on Ant IV-II ( Fig. 23B ). Ant III sense organ with two rod-shaped sensilla, three spiny guard sensilla, sblunt sens, ciliated and weakly ciliated chaetae; 6+ 6 eyes (A-F). Head dorsal chaetotaxy with 10-12 antennal (An) ciliated Mc ( Fig. 23D ). 4/554 prelabral and labral chaetae: prelabral ciliated, labral row ‘a’ ciliated only on the final part, and rows ‘m’ and ‘p’ smooth. Labral papillae absent. Maxillary palp bifurcated with three smooth sublobal chaetae. Labial papilla (l.p.) E with finger-shaped process not reaching the base of apical appendage. Labial row with M 1, M 2, R*, E, L 1 and L 2 Mc (R half to two thirds of M). Postlabial chaetotaxy with 2-3 ciliated central Mc along the groove ( Fig. 23C ).

Thorax chaetotaxy

Th II and Th III without Mc.

5-6

Abdomen chaetotaxy ( Figs 24 ; 25 )

Abd II, mi and ml chaetae present over bothriotrichum (m 2) (sometimes an additional mic externally to mi); a (p) present as slightly ciliated mic; a 2 (a) as small Mc or mes, but not mic; m 3 (B) present as Mc; ‘as’ over m 3, and a 3 above a 2 and m 2; m 2e and p 4 (q 1 and q 2) present as slightly ciliated mic; lm and ll present as slightly broadened at tip ciliated mic over bothriotrichum (a 5) (additional mic interior to a 5 bothriotrichum; m 4 as slightly ciliated chaeta; m 5 as mes; a 6 (smooth), a 7 -a 8, m 6, p 5 -p 8 (slightly ciliated) as mic; Abd III, mi, ml and a 2 as slightly broadened ciliated mic over bothriotrichum (m 2); a 3, m 3, m 4 and p 3 as smooth mic; li, lm and a 6 as ciliated mic above bothriotrichum (a 5); im and am 6 as small ciliated mic under a 5 bothriotrichum; pm 6 and p 6 as Mc with d 3 as slightly ciliated mic between them; ‘ms’ (d 2) near p 5 as smooth mic; m 7a and p 8p as mes; p 8 as small ciliated mic; a 8, m 7 -m 9 and p 9 as smooth mic. Abd IV with three median mac (C 1, B 5-6; ratio between C 1 -B 5 /B 109/99= 1.10), and 7 lateral mac (D 3, E 2-4, F 1-3); T 5 and D 2 as mic; De 3, E 4p2, F 3p, Fe 5, T 6 and T 7 as mes; before T 2 bothriotrichum four ciliated mic (a, m, s and D 1), some fan-shaped; pi and pe as ciliated fanshape mic.

2p

Legs

Legs without scales. Trochanteral organ with about 15-20 spine-like chaetae ( Fig. 23E ). Claw with four teeth on inner edge: basal pair at 60% with respect to the internal claw edge length, respectively, first unpaired median at 75%, and one minute unpaired subapical at 85%; two lateral teeth at 20%, and one more basal dorsal tooth. Empodium acuminate, all with pe lamella serrated, other lamellae smooth (ae, ai, pi); claw: empodium ratio =1: 0.65. Tibiotarsus III distally with one inner smooth chaeta 0.50 longer than claw; tenent hairs capitate, smooth, and 0.90 shorter than claw ( Fig. 23F ).

Furcula

Manubrium and dens with scales only ventrally, and with the same length; manubrial plate (dorsally) with three internal, approximately eight external ciliated Mc, and 2 psp ( Fig. 23G ). Non-ringed area of dens 3.4 times the length of mucro (2.5-5.33, n= 8), with subapical tooth a little smaller than apical tooth. ( Fig. 23H ).

Macrochaetotaxy

Reduced formula (from Gisin 1965, 1967a, b): R 0 R 1 R 2000 /00/0201+2/s, pABq 1 q 2, M 1 M 2 R*EL 1 L 2 (* ½ to 2/3 of M).

ECOLOGY

Species present in the MSS of the three mountainous ranges ( Fig. 1 A-C) but only verified from the supra-Mediterranean and oro-Mediterranean bioclimatic zones (in the forest strip), in the latter with records that suggest a more stable population. The largest number of specimens was collected with SSD-16, installed in the Canchal Las Revueltas-Los Horcos ( Fig. 4 G-H), site with strong influence of the pine forest ( Pinus sylvestris ), and where P. gonzaloi Baquero & Jordana n. sp. accounted for 67% of the 895 Entomobryomorpha (excluding Orchesella ) collected there ( Fig. 1E ). At this site, where this species is dominant, it is syntopic with four other Entomobryomorpha species ( Figs 1F ; 4H ).

REMARKS

The species that share the traditional formula of Gisin (1965, 1967a, b) with this species are, in addition to P. valverdei Baquero & Jordana n. sp., P. styriaca Neuherz & Nosek, 1975 and P. subcentralis . Table 6 shows the differences between these four species.

Of the 22 species of Entomobryomorpha ( Orchesella excluded), P. gonzaloi Baquero & Jordana n. sp. is the sixth most abundant, accounting for 4% of the specimens collected ( Fig. 1D ).

Figures

FIG. 8. — Habitus and color patterns of some species: A, Entomobrya guadarramensis Jordana & Baquero n. sp.; B, Entomobrya ledesmai Jordana & Baquero n. sp.; C, D, Lepidocyrtus labyrinthi Baquero & Jordana n. sp.; E, Lepidocyrtus purgatori Baquero & Jordana n. sp.; F, Lepidocyrtus paralignorum Baquero & Jordana n. sp.; G, Pseudosinella valverdei Baquero & Jordana n. sp.; H, Pseudosinella gonzaloi Baquero & Jordana n. sp. Scale bar: 0.25 mm.

FIG. 23. — Pseudosinella gonzaloi Baquero & Jordana n. sp.: A, organite on tip of Ant IV;B, three types of sensilla on Ant IV; C, area postlabial; D, head chaetotaxy; E, trochanteral organ;F, claw and empodium of leg 3; G, detail of the claw, ventral view;H, manubrial plate chaetae; I, tip of dens, mucro and mucronal spine. Abbreviations:see Material and methods.Symbols:●, Mc;○, mes or small/doubtful Mc;⦰, pseudopores.Scale bars:A,B, 0.005 mm;C, G, H, 0.02 mm;G,0.01 mm.

FIG. 24. — Pseudosinella gonzaloi Baquero & Jordana n. sp., Abd II-III dorsal macrochaetotaxy. Abbreviations: see Material and methods. Symbols: ●, Mc; ○, mes or mic; ⦰, pseudopores; ▣, bothriotricha. Scale bar: 0.02 mm.

FIG. 25. — Pseudosinella gonzaloi Baquero & Jordana n. sp., AbdIV dorsal macrochaetotaxy. Abbreviations: see Material and methods. Symbols: ●, Mc; ○, mes or mic; ⦰, pseudopores; △, special chaetae. Scale bar: 0.05 mm.

FIG. 1. — A, basic orography of the Sierra de Guadarrama National Park; B, location of the subterranean sampling devices (SSD) in the Sierra de Guadarrama National Park; C, collection sites of the species collected with the SSDs; D, relative abundance of Entomobryomorpha Börner, 1913 species (excluding Orchesella Templeton, 1835); E, relative abundance by SSDs; F, species richness by SSD. Abbreviations: exx, specimens; spp, species.Species authorships:see Index of species.

FIG. 4. — Places where new species have been collected more abundantly: A, C, E, G, photos of the sampled biotopes; B, D, F, H, exact installation point and brief card of the SSDs (location and collecting species of Entomobryomorpha Börner, 1913, excluding Orchesella Templeton, 1835). Species authorships: see Index of species.