Seira dinizi Gama, 1988

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: 18-23

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Seira dinizi Gama, 1988


Seira dinizi Gama, 1988 

Figs 2B View Figure , 10‒13View FIGURE 10View FIGURE 11, Tables 1‒2

Seira dinizi Gama, 1988  (in Gama 1988a): 77, fig. 1, Canary Islands, Spain (orig. descr.), notAbout not examined. Yoshii, 1990: 535, figs 1A‒F, Ilha de São Miguel Island, Azores Macaronesia, Portugal (descr.). Baquero et al., 2014: 1577 (compared). Cipola et al., 2014a: 494 (cit.)

Diagnosis. Body bluish ( Fig. 2B View Figure )  ; head macAbout mac M 4i, S4, Pa 4 and Pp 6 absent, eyepatches with 3 interocular chaetae (q and r absent) ( Fig. 10E View Figure )  ; labral papillae conical, outer papillae reduced to square projection ( Fig. 10C View Figure ); Th II with 4 medio-central mac (m1‒ 1i, m2‒ 2i) and PmA‒PmC groups with 6‒7, 3 and 3‒5 mac respectively ( Fig. 11A View Figure ); Th III‒ AbdAbout Abd III with 1 1‒14, 5, 3 and 1 central macAbout mac respectively ( Figs 11 B‒E View Figure )  ; AbdAbout Abd IV with 12‒13 central and 17‒19 lateral macAbout mac ( Fig. 12A)  ; unguis apical tooth present; unguiculus outer edge serrated and without proximal tooth; manubrium ventrally with 2/4 subapical and 16 apical chaetae ( Fig. 13F View Figure ).

Examined material. 3 males, 8 females and 18 juveniles on slides and 119 specimens in alcohol ( EIC6001-2 / INPAAbout INPA and JIAP)  : Canary Islands, Province of Las Palmas, Isla of Montaña Clara (29°17'35''N; 13°31'59''W)GoogleMaps  , Veril, near and away from the sea to island southeast, 16 m,, pitfall-traps, B. Rodríguez coll  . 1 male, 4 females and 1 juvenile on slides (EIC6005-6/JIAP): idem, except volcanic pit (29°17'35''N; 13°32'05''W), 256 m, x.2001. 1 juvenile on slide (EIC4376/JIAP): El Hierro Island, Frontera municipality (27°45'14''N; 18°00'34''W)GoogleMaps  , near Cave, 141 m, 06.x.2000, P. Oromí coll.

Description based on the listed specimens. Total length ( head + trunk) of specimens 1.88‒2.00 mm (n=3). Specimens pale white with blue pigment heavily on AntAbout Ant I‒IV and diffuse on head, trunk and legs; eyepatches black ( Fig. 2B View Figure ). Scales present on AntAbout Ant I to basal half of AntAbout Ant III, ventral and dorsal head, thorax and abdomen dorsally, legs (except empodia), and manubrium and dentes ventrally. Collophore without scales ( Fig. 13E View Figure ).

Head. Antennae shorter than body length, antennal ratio as I: II  : III: IV = 1: 1.84‒1.9: 1.96‒2.01: 2.16‒2.71 (n=2). Ant IV not annulated, with simple apical bulb and blunt sens. Ant III apical organ with two rod-like sens, 3 guard sens and several blunt sens of different sizes ( Fig. 10A View Figure ). Clypeal formula with 4 (l1‒2), 3 (f), 3 (pf0‒1) ciliate chaetae, l1 acuminate, l2 largest, and 2 frontal smaller ( Fig. 10B View Figure ). Two inner labral papillae conical, outer papillae reduced to square projections ( Fig. 10C View Figure ). Maxillary palp with smooth apical appendage (a.a.) and basal chaeta (b.c.) weakly ciliated, thicker and 1.44 longer than apical ( Fig. 10D View Figure ). Eye A larger, H smaller, with 3 interocular chaetae (v, p, t); head dorsal chaetotaxy ( Fig. 10E View Figure ) with 6 ‘An’ macAbout mac ( An 1, An 2‒3), 3‒4 ‘A’ macAbout mac (A0, A2‒3, and A5, rarely as micAbout mic), 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 2 ‘Pe’ mac (Pe2‒3). Basomedian and basolateral labial fields with M1‒2, R, E, L1‒2, M1 and R smaller. Postlabial ventral chaetotaxy with about 17 ciliate chaetae, postlabial formula 4 (G1‒4), 3 (H2‒4), 4 (J1‒4), J2 and one proximal smaller; basal chaeta absent ( Fig. 10F View Figure ).

Thorax chaetotaxy ( Figs 11A‒B View Figure ). Th II, series ‘a’ with 4 mac (a 5i ‒5p and one unnamed anteriorly); series ‘m’ with 7 mac (m 1i ‒1, m 2i ‒2, m 4i ‒4p); series ‘p’ with 13‒16 macAbout mac (p 1i 2p‒1p, p2a‒2ep2, p3, p5), p 1i 2p and p2e rarely absent, p2ep2 generally as macAbout mac. Th III, series ‘a’ with 4‒6 macAbout mac (a 1i ‒5), a1 generally as macAbout mac and a5 present or absent; series ‘m’ without macAbout mac; series ‘p’ with 9‒10 macAbout mac (p 1i ‒1p, p2a‒2ea, p3, p5‒6), p2e generally as macAbout mac. Th ratio as II: III = 1: 0.6 1‒0.77 (n= 3). 

Abdomen chaetotaxy ( Figs 11C‒E View Figure , 12A‒B). Abd I, series ‘a’ without mac; series ‘m’ with 5 mac (m 2i ‒4). Abd II, series ‘a’ with 1 mac (a2); series ‘m’ with 3 mac (m3‒3e, m5). Abd III, series ‘m’ with 2 mac (m3, pm6); series ‘p’ with 2 mac (p6, p 7i). AbdAbout Abd IV with 12‒13 central macAbout mac of series ‘A’ to ‘T’ (A3‒6, Ae 7, B3‒6, C1, C4, T1, T7), T7 as macAbout mac or mes, and 17‒19 lateral macAbout mac of series ‘D’ to ‘Fe’ (D3p, E2‒4p, F1‒3p, Fe 2‒6), F3p and Fe 6 as macAbout mac or mes; at least 3 sens (as? and ps type I and one type II)  , and posteriorly with 6 mes present. Abd V, series ‘a’ with 1 mac (a5); series ‘m’ with 4 mac (m2‒3, m5‒5e); series ‘pa’ with 2 mac (p3a, p6ai); series ‘p’ with 6 mac (p0‒1, p3‒5, ap6). AbdAbout Abd ratio as III: IV = 1: 2.55‒3.57 (n= 3)  . Female genital plate with two pairs (superior and inferior) of small smooth chaetae ( Fig. 13H View Figure ).

Legs. Subcoxa I with 3 chaetae and 2 psp; subcoxa II with an anterior row of 10 chaetae, posterior row of 3 chaetae and 3 psp; subcoxa III with one row of 9 chaetae, 1 anterior chaeta and 2 posterior psp ( Figs 13A‒C View Figure ). Trochanteral organ with about 15 spine-like chaetae ( Fig. 13D View Figure ). Unguis with median and apical teeth with the same length, basal teeth smaller. Unguiculus with all lamellae acuminate, pe lamella serrated and without proximal tooth, other lamellae (ai, ae, pi) smooth; ratio unguis: unguiculus = 1: 0.59. Tibiotarsus III distally with inner smooth chaeta 1.08 larger than unguiculus; and outer tenent hair capitate, discretely ciliate, same length as unguis  .

Collophore ( Fig. 13E View Figure ). Anterior side with 12 ciliate chaetae, including 2 distal mac, 1 apically acuminate chaeta; posterior side with 1 thicker ciliate chaeta; lateral flap with 1 smooth chaeta and 12 ciliate chaetae.

Furcula ( Figs 13F‒G View Figure ). Manubrium ventrally with formula 1, 2, 2, 2/4 (subapical), 16 (apical) ciliate chaetae and approximately 4 elongated apical scales per side; manubrium dorsally with 5 subapical ciliate chaetae; manubrial plate with 4 ciliate chaetae and 3 psp.

Remarks. In the original description of Seira dinizi  the species was found in most of the Canary Islands and the characteristics reported were only the dorsal coloration and macrochaetotaxy pattern ( Gama 1988a). The specimens analyzed here from Isla de Montaña Clara and El Hierro corroborate with the characteristics of the original description and forAbout for this reason justify the redescription.

Gama (1988a) compared S. dinizi  with S. ferrarii  because of shared apparent reduction in dorsal macrochaetotaxy, but S. dinizi  differs more clearly from this species by body color with diffuse bluish pigment (with stripes on trunk of S. ferrarii  ), Th II without mac a5ip (present in S. ferrarii  ), Th II with 2 lateral mac (4 in S. ferrarii  ) and Abd I‒II without mac a3 and m3ep (present in S. ferrarii  ). Particularly, S. dinizi  is more similar to Seira dori  Gruia, Poliakov & Broza, 2000 from Israel and S. taeniata  (sensu Yoshii, 1990) from Cape Verde, Macaronesia, by head macrochaetotaxy reduced, Th II with 4 medio-central mac, Abd II‒III with 3 and 1 central mac, respectively; and Abd IV with 12 central mac (at least in S. dori  ). However, S. dinizi  differs from these species by Th II PmA and PmC groups with 6‒7 and 3‒5 mac, respectively (5 and 6 in S. dori  , 5 and 5 in S. taeniata  ); by the number of Th III with up to 14 central mac in S. dinizi  (p 1i and p1p present), while there are 12 central mac in S. dori  (p 1i and p1p absent) and only 8 in S. taeniata  , respectively; and by the number of Abd I with 5 central mac in S. dinizi  and 4 in S. taeniata  . Other characteristics that differentiate S. dinizi  from the mentioned species include the bluish body colour pattern (restricted to Abd III in S. dori  ); unguiculus with outer lamella serrated and without basal tooth, while this lamella is smooth in S. dori  and S. taeniata  and the basal tooth is present in S. dori  . Other comparisons among species are presented in Tables 1 and 2.


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