Seira lepidochaetosa,

Cipola, Nikolas Gioia, Morais, José Wellington De & Bellini, Bruno Cavalcante, 2018, Three new species of Seira Lubbock (Collembola, Entomobryidae, Seirinae) from Madagascar with Lepidocyrtus - like habitus, Zootaxa 4524 (2), pp. 151-173: 152-155

publication ID

publication LSID

persistent identifier

treatment provided by


scientific name

Seira lepidochaetosa

sp. nov.

Seira lepidochaetosa  sp. nov. Cipola & Bellini

Figs 2–6View FIGURE 2View FIGURE 3View FIGURE 4View FIGURE 5View FIGURE 6, 17View FIGURE 17, Table 1

Diagnosis. Body with violet pigments on Th II anteriorly ( Fig. 2View FIGURE 2); clypeal chaetae l1–2 apically acuminate; outer labral papillae smaller than inner; labial papilla E with lateral process pointed ( Figs 3View FIGURE 3 B–D); dorsal head with A5 and M1 mac, S3 as mic; postlabial chaetae G2–3 normal ( Figs 3View FIGURE 3 E–F); Th III–Abd II with 11, 0, 0 and 3 central mac, respectively; Abd IV with 8 central mac and 15–16 lateral mac, without mes group ( Figs 4View FIGURE 4, 5BView FIGURE 5); unguiculus truncate; collophore anteriorly with 7 proximal spine-like chaetae, posteriorly with 4 spines and lacking smooth chaetae; manubrium ventrally with 2/2 subapical chaetae; manubrial plate without blunt chaetae ( Figs 6View FIGURE 6 E–G).

Type material. Holotype female in slide (54926/ CAS): Madagascar, Toliara Province, Atsimo-Andrefana Region, Ambohimahavelona village , 23°26.45'S, 43°53.98'E ( Fig. 17View FIGURE 17), dry forest, 45 m, 16–27.vii.2010, Malaisetrap, M. Irwin & R, Harin'Hala coll.GoogleMaps  Paratype in slide (54926/ CAS): 1 female, same data as holotypeGoogleMaps  . Paratypes in slides (54922/ CAS): 3 females, same data as holotype, except 01–08.iv.2009GoogleMaps  . Paratypes in slides (059/ INPA): 2 females and 2 specimens in alcohol, same data as holotype, except 01.ix–03.x.2010GoogleMaps  . Paratypes in alcohol (54914/ CAS): 2 specimens, same data as holotype, except 10–  . Paratypes in alcohol (54923/ CAS): 7 specimens, same data as holotype, except 29.v–  .

Description. Total length (head+trunk) of specimens 2.21–2.88 mm (n=4), holotype 2.88 mm. Specimens pale white with dark violet pigments on anterior head, anterior to lateral edges of Th II, one latero-distal spot on Abd IV and distal half of femur III; and light pigments on Ant II–IV, Abd III laterally, Abd V, and femur II distally; eyepatches black ( Fig. 2View FIGURE 2). Scales present from Ant I to one basal third of Ant III, all head, thorax and abdomen, legs (except empodia), anterior side of collophore, both sides of the manubrium and dentes ventrally.

Head. Ratio antennae: trunk=1: 1.72–1.82 (n =3), holotype 1: 1.82; antennal segments ratio as I: II: III: IV=1: 1.32–1.50: 1.16–1.45: 1.75–2.15, holotype 1: 1.32: 1.28: 1.75. Ant IV not annulated, with apical bulb apically bilobed. Ant III distally with 1 apical sensory rod elongated and 1 rounded, 3 guard sens, some blunt sens of different sizes and ciliate chaetae ( Fig. 3AView FIGURE 3). Clypeal formula with 4 (l1–2), 2 (f), 3 (pf0–1) ciliate chaetae, l1–2 larger and apically acuminate, frontal chaetae gently smaller ( Fig. 3BView FIGURE 3). Four labral papillae apically pointed, outer papillae smaller ( Fig. 3CView FIGURE 3). Labial papilla E with lateral process (l.p.) apically pointed and exceeding the base of the papilla ( Fig. 3DView FIGURE 3). Maxillary palp with smooth apical appendage (a.a.) and basal chaeta (b.c.) weakly ciliated, thicker and 1.09 longer than the apical. Eyes A and B larger, G and H smaller, with 5 interocular chaetae (q, s, p, r, t); head dorsal chaetotaxy ( Fig. 3EView FIGURE 3) with 11 ‘An’ (An1a –3, An2a mic present), 4 ‘A’ (A4 mic present), 2 ‘M’ (M1, M4), 1 ‘S’ mac (S6), and 1 ‘Pa’ (Pa5) mac. Ventral chaetotaxy with about 14 ciliate chaetae, postlabial formula 4, 2 (H2 absent), 4 chaetae; basal chaeta (b.c.) largest ( Fig. 3FView FIGURE 3).

Species of Seira 

Characteristics lepidochaetosa  semicaerulea  metafemurata 

sp. nov. sp. nov. sp. nov.

Clypeal l2 chaeta acuminate normal acuminate

Postlabial G2 normal smaller smaller

chaetae G3 normal smaller smaller

Process lateral of pointed finger-like finger-like

labial papilla E

Head dorsal A 4 m – m

chaetotaxy A5 M M m

M1 M m M

S 3 m M M

S 5 m – –

S6 M M m

Pe 3 m M m

Th II mac m 2i M M m

m4 M M m

p1 M M m

p2 M M m

p3 M M m

Th III mac p 2 m M M

p 3 m M m

Abd IV mac central 8 8 7

lateral 15–16 13 15

lateral mes group – – 14

Subcoxa I 5 5 5

Subcoxa II a row 11 11 12

p row 5–7, 4psp 4, 2psp 5, 3psp

Subcoxa III 11 10 11

Metatrocanteral organ 33 39 31

Collophore anterior side 7sp 7sp 5sp

chaetotaxy posterior side 4sp, 3C 3sp, 1C 4sp, 1C, 1S

lateral flap 2S, 16C 4S, 14C 5S, 15C

Subapical chaetae of 2 4 4

Ventral manubrium

Blunt chaetae on – – 4

manubrial plate

Symbols used to represent the morphological characteristics: (C) ciliated chaeta; (S) smooth chaeta; (M) mac; (m) mic; (psp) pseudoporus; (–) absent.

Thorax chaetotaxy ( Figs 4View FIGURE 4 A–B). Th II a, m and p series with 4 (a 5i 2–5p), 4 (m1, m2– 2i, m4) and 3 (p1–3) mac, respectively; apex distally with numerous mic and scales interspersed. Th III a, m and p series with 0, 1 (m6) and 0 mac, respectively; p2ea mic absent. Ratio Th II:III =2.90–2.65: 1 (n =3), holotype 2.90: 1.

Abdomen chaetotaxy ( Figs 4View FIGURE 4 C–D, 5A–C). Abd I without mac, a, m and p series with 5 (a1–3, a5–6), 5 (m2–6) and 2 (p5–6) mic, respectively, m 4i absent. Abd II a, m and p series with 1 (a2), 3 (m3–3e, m5) and 0 mac, respectively, a2p and m3ep mic present. Abd III a, m and p series with 0, 3 (m3, am6, pm6) and 1 (p6) mac, respectively, a2 and p3 as accessory mic. Abd IV with 8 central mac of A –T series (A3–5, B3–6, C1) and 15–16 lateral mac of E –Fe series (E2–4p, Ee10, F1–3, Fe1–5); 7 sens (ps type I, others type II) and 8 posterior mes present. Abd V a, m and p series with 1 (a5), 4 (m2–3, m5–5e) and 5 (p1, p3–6) mac, respectively. Ratio Abd III:IV=1: 2.65–4.41 (n= 3), holotype 1: 4.41.

Legs. Subcoxa I with 5 chaetae and 2 psp; subcoxa II with an anterior row of 11 chaetae, posterior row of 5–7 chaetae and 4 psp; subcoxa III with one row of 11 chaetae and 2 posterior psp ( Figs 6View FIGURE 6 A–C). Trochanteral organ with about 33 spine-like chaetae ( Fig. 6DView FIGURE 6). Tibiotarsus III generally subdivided on distal two thirds. Unguis with basal and median teeth with the same length, apical tooth smaller. Unguiculus with ai lamellae truncate, others acuminate, all lamellae smooth (ai, ae, pi, pe); ratio unguis:unguiculus=1: 0.55. Tibiotarsus III distally with one inner smooth chaeta 1.32 larger than unguiculus; tenent hair capitate, finely ciliate, and 0.80 smaller than unguis outer edge (as Figs 11View FIGURE 11 E–F).

Collophore ( Fig. 6EView FIGURE 6). Anterior side with 15 chaetae, basally 7 spine-like chaetae, 1 thin mic, 2 inner mic and 2 long ciliate chaetae apically acuminate, distally with 2 mac and 1 long ciliate chaetae apically acuminate; posterior side distally with 7 chaetae per side, 4 reduced spine and 3 ciliate chaetae; lateral flap with 2 smooth and 17 ciliate chaetae.

Furcula ( Figs 6View FIGURE 6 F–G). Manubrium ventrally with formula 1, 2, 2, 2/2 (subapical), 16–18 (apical) ciliate chaetae and approximately 17 elongated apical scales per side; manubrial plate with 8 ciliate chaetae of different sizes and 3 psp. Furcula lacking blunt chaetae.

Etymology. Refers to the similarity with the genus Lepidocyrtus Bourlet, 1839  in the habitus and reduction of macrochaetae ( Fig. 2View FIGURE 2).


California Academy of Sciences


Instituto Nacional de Pesquisas da Amazonia