Seira barrai

Cipola, Nikolas Gioia, Arbea, Javier, Baquero, Enrique, Jordana, Rafael, Morais, José Wellington De & Bellini, Bruno Cavalcante, 2018, The survey of Seira Lubbock, 1870 (Collembola, Entomobryidae, Seirinae) from Iberian Peninsula and Canary Islands, including three new species, Zootaxa 4458 (1), pp. 1-66: 39-44

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Seira barrai

sp. nov.

Seira barrai  sp. nov. Cipola & Baquero

Figs 3C View Figure , 26‒29View FIGURE 26View FIGURE 27, Tables 1‒2

Diagnosis. Body black with legs yellowish ( Fig. 3C View Figure ); head macAbout mac M 4i, S4, Pa4 and Pp6 absent, eyepatches with 3 interocular chaetae (q and r absent) ( Fig. 26E View Figure ); labral papillae conical, outer papillae smaller ( Fig. 26D View Figure ); Th II with 4 medio-central macAbout mac (m1‒ 1i, m2‒ 2i) and PmA‒PmC groups with 6‒7, 2‒3 and 5 macAbout mac ( Fig. 27 A View Figure ); Th III ‒ AbdAbout Abd III with 14, 6, 4 and 1 central macAbout mac, respectively ( Figs 27B‒E View Figure ); AbdAbout Abd IV with 11‒12 central and 13‒14 lateral macAbout mac ( Fig. 28 A); unguis apical tooth absent ( Fig. 29E View Figure ); unguiculus outer edge serrated and with proximal tooth ( Fig. 29E View Figure ); manubrium ventrally with 0/2 subapical and 14‒16 apical chaetae ( Fig. 29G View Figure ).

Type material. Holotype female on slide (20141218-e/MZNA): Spain, Navarra Province, Viana municipality, Embalse de Las Cañas (42°29'20.3"N; 02°24'13.6"W), on Suaeda vera  ( Amaranthaceae  ), 383 m, 18.xii.2014, E. Baquero coll. Paratypes on slides (MZNA): 1 female and 1 juvenile, same data as holotype.

Description. Total length ( head + trunk) of adult specimens 2.14‒2.16 mm (n=2), holotype 2.16 mm. Specimens completely black, except forAbout for trochanters and femora slightly depigmented and tibiotarsi yellow; eyepatches black ( Fig. 3C View Figure ). Scales present on AntAbout Ant I to basal third of AntAbout Ant III, ventral and dorsal head, thorax and abdomen dorsally, legs (except empodia), anterior collophore, and manubrium and dentes ventrally.

Head. Antennae shorter than body length, antennal ratio as I: II  : III: IV = 1: 1.5 9‒1.72: 1.78‒1.82: 2.27‒2.82 (n=3), holotype 1: 1.60: 1.78: 2.34 ( Fig. 3C View Figure ). AntAbout Ant IV annulated, with apical bulb apically bilobed and blunt sens ( Fig. 26 A View Figure )  . Ant III apical organ with two rod-like sens, 3 guard sens and several blunt sens of different sizes ( Fig. 26B View Figure ). Clypeal formula with 4 (l1‒2), 2 (f), 5 (pf0‒2) ciliate chaetae, l1 acuminate, l2 largest, pf2 smaller and spine- like ( Fig. 26C View Figure ). Four conical labral papillae, outer papillae smaller ( Fig. 26D View Figure ). Maxillary palp with smooth apical appendage (a. a.) and basal chaeta (b.c.) weakly ciliated, thicker and 1.03 longer than apical  . Eyes A and B larger, G and H smaller, with 3 interocular chaetae (v, p, t)  ; head dorsal chaetotaxy ( Fig. 26E View Figure ) with 9 ‘An’ macAbout mac (An 1, An 2‒3), 4 ‘A’ macAbout mac (A 0, A 2‒3, A 5), 3 ‘M’ macAbout mac (M1‒2, M4), 7 ‘S’ macAbout mac (S0‒3, S5‒6), 1 ‘Ps’ macAbout mac (Ps 2), 4 ‘Pa’ macAbout mac (Pa 1‒3, Pa 5), 2 ‘Pm’ macAbout mac (Pm 1, Pm 3), 4 ‘Pp’ macAbout mac (Pp 1‒3, Pp 5)  , and 3 ‘Pe’ mac (Pe2‒3 plus Pe3p). Basomedian and basolateral labial fields with M1‒2, R, E, L1‒2, M1, R smaller. Postlabial ventral chaetotaxy with about 15 ciliate chaetae, postlabial formula 4 (G1‒4), 3 (H2‒4), 4 (J1‒4), J2 reduced, basal chaeta (b.c.) largest ( Fig. 26F View Figure ).

Thorax chaetotaxy ( Figs 27 A ‒B View Figure ). Th II, series ‘a’ with 4 macAbout mac (a5ip‒5p)  ; series ‘m’ with 7 mac (m 1i ‒1, m 2i ‒2, m 4i ‒4p); series ‘p’ with 14‒16 macAbout mac (p 1i 2p‒1p, p2a–2ep2, p3, p5), p1ip present or absent, p2a as macAbout mac or micAbout mic. Th III, series ‘a’ with 7 macAbout mac (a 1i ‒6)  ; series ‘m’ with 1 mac (m6); series ‘p’ with 10 macAbout mac (p 1i ‒1p, p2a‒2ea, p3, p5‒6). Th ratio as II  : III = 1: 0.5 5‒0.72 (n= 3), holotype 1: 0.72.

Abdomen chaetotaxy ( Figs 27 C‒E View Figure , 28 A ‒B)  . Abd I, series ‘a’ with 1 mac (a3); series ‘m’ with 5 mac (m 2i ‒4). Abd II, series ‘a’ with 1 mac (a2); series ‘m’ with 4 mac (m3‒3e, m5). Abd III, series ‘m’ with 3 mac (m3, am6, pm6); series ‘p’ with 1 mac (p6). AbdAbout Abd IV with 11‒12 central macAbout mac of series ‘A’ to ‘T’ (A 3a‒6, Ae7, B3‒6, C1, T1)  , A 3a as macAbout mac or micAbout mic, and 13‒14 lateral macAbout mac of series ‘E’ to ‘Fe’ (E2‒4p, Ee 7, Ee 10, F1‒3, Fe 2‒5), E2p as macAbout mac or micAbout mic; at least 5 sens (ps type I and 4 type II), and posteriorly with 6 mes and 1 micAbout mic present  . Abd V, series ‘a’ with 1 mac (a5); series ‘m’ with 4 mac (m2‒3, m5‒5e); series ‘p’ with 5 mac (p1, p3‒5, ap6). AbdAbout Abd ratio as III: IV = 1: 3.21‒5.07 (n= 3), holotype 1: 3.21. 

Legs. Subcoxa I with 4 chaetae and 2 psp; subcoxa II with an anterior row of 10 chaetae and 1 anterior chaeta, posterior row of 4 chaetae and 5 psp; subcoxa III with one row of 9 chaetae and 2 posterior pspAbout psp ( Figs 29 A ‒C View Figure )  . Trochanteral organ with about 20 spine-like chaetae ( Fig. 29D View Figure ). Unguis with basal and median teeth with the same length, apical tooth absent. Unguiculus with all lamellae acuminate, pe lamella serrated and with small proximal tooth, other lamellae (ai, ae, pi) smooth; ratio unguis: unguiculus = 1: 0.53 ( Fig. 29E View Figure )  . Tibiotarsus III distally with inner smooth chaeta 1.10 larger than unguiculus; outer tenent hair capitate, discretely ciliate, and 0.93 smaller than unguis.

Collophore ( Fig. 29F View Figure ). Anterior side with 10 ciliate chaetae, including 2 distal mac and 1 large acuminate long chaetae; posterior side with 5 ciliate chaetae, 1 distal thickest; lateral flap with 3 smooth chaetae (one small posteriorly) and 12 ciliate chaetae.

Furcula ( Figs 29G‒H View Figure ). Manubrium ventrally with formula 1, 0, 0, 0/2 (subapical), 14‒16 (apical) ciliate chaetae and approximately 11 elongated apical scales per side; manubrium dorsally with 7 subapical ciliate chaetae; manubrial plate with 5‒6 ciliate chaetae and 4 psp.

Etymology. The species was named after Dr. Jean-Auguste Barra ( Louis Pasteur University, France), researcher of Seira  .

Remarks. Seira barrai  sp. nov. is most similar to S. maroccana Negri, Pellecchia & Fanciulli, 2005  and S. vanderheydeni  Jacquemart, 1974, both from Northern Africa, in head macAbout mac M 4i, S4, Pa4 absent, Th II with 4 medio-central macAbout mac (m1‒ 1i, m2‒ 2i) and 5 macAbout mac in PmC group, Th III-Abd III with 14, 6, 4 and 1 central macAbout mac, respectively; and AbdAbout Abd IV with about 11 central macAbout mac ( Table 2). However, S. barrai  sp. nov. differs from these species by chaetotaxy of the Th II with up to 7 macAbout mac ( generally) in PmA group (6 in S. maroccana  and S. vanderheydeni  ), and 13‒14 lateral macAbout mac in AbdAbout Abd IV (12 in S. maroccana  ). Seira barrai  sp. nov. differs also by AntAbout Ant IV with apical bulb apically bilobed ( simple in S. maroccana  ), unguis without apical tooth ( present in the other species), unguiculus with outer lamella serrated and with proximal tooth ( outer lamella smooth and without tooth in S. maroccana  ), and manubrium ventrally with 0/2 subapical and 14‒16 apical chaetae (0/4 and 12, respectively, in S. maroccana  ) ( see Tabs 1 and 2). Seira barrai  sp. nov. also differs from these species by body black with legs yellowish, while S. vanderheydeni  is depigmented (except eyepatches) and S. maroccana  hasAbout has transverse white strips on AbdAbout Abd I‒II, and anterior and posterior AbdAbout Abd IV. This color pattern of S. barrai  sp. nov. is similar to S. pallidipes Reuter, 1895  , butAbout but the newAbout new species differs from this last by reduction of dorsal macrochaetotaxy ( see Winkler & Dányi 2017, and remarks of S. burgersi  sp. nov.). Other morphological differences among the compared species are presented in Tables 1 and 2.


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