Tyrannoseira diabolica Bellini & Godeiro, 2012

Cipola, Nikolas Gioia, Morais, José Wellington De, Godeiro, Nerivania Nunes & Bellini, Bruno Cavalcante, 2019, Taxonomic revision of Brazilian genus Tyrannoseira Bellini & Zeppelini, 2011 (Collembola, Entomobryidae, Seirinae), Zootaxa 4586 (2), pp. 201-248: 224-229

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Tyrannoseira diabolica Bellini & Godeiro, 2012


Tyrannoseira diabolica Bellini & Godeiro, 2012 

Figs 1EView FIGURE 1, 19–23View FIGURE 19View FIGURE 20View FIGURE 21View FIGURE 22View FIGURE 23, 34View FIGURE 34

Tyrannoseira diabolica Bellini & Godeiro, 2012: 81  , figs. 1–13 (orig. descr.).

Type locality. Brazil, Rio Grande do Norte state, Parnamirim, Barreira do Inferno .

Other references: Zeppelini & Lima 2012: 41–43 (species compared).

Type material examined. Holotype female, paratypes 1 male, 8 females and 1 juvenile (MNRJ/3170), examined before of fire in September 2018.

Typological note. One paratype was designed as female in original description and we correct it here as it is a juvenile. All type material of T. diabolica  deposited at MNRJ was destroyed in fire in September 2018.

Diagnosis. Body pale with irregular purple pigment on Ant distally and Th II to Abd IV ( Fig. 1EView FIGURE 1); Ant III without sens type– f ( Fig. 19AView FIGURE 19); head chaetotaxy with An 3i mic, An 3i 2 and A4 absent and with 1 posterior mac (Pe3) ( Fig. 19BView FIGURE 19); clypeus with l2 acuminate, f2 smaller ( Fig. 19CView FIGURE 19); outer labral papilla subequal to inner papillae (as Fig. 8EView FIGURE 8); postlabial formula with 3 chaetae below ‘J’ row ( Fig. 19DView FIGURE 19); Th II with 6 anterior mac (a4+, a 4i, a5, a5p, a 5i, a 5i 2), m 1i and p 1i 2 mac absent, p1ip mac present, p2ea2 mic present ( Fig. 20AView FIGURE 20); Th III with 2 lateral mac (a6, m6) ( Fig. 20BView FIGURE 20); Abd IV with 4–5 antero-central mac (A3a, A3, B3, C1, T1) and 4 mac (Fe2–5) in Fe series ( Fig. 21AView FIGURE 21); trochanteral organ with 18 spine-like chaetae ( Fig. 22DView FIGURE 22); leg I of males with 6–8 thin femoral spines and 4 finely ciliate tibiotarsal spines ( Fig. 22EView FIGURE 22); collophore anteriorly with 3 apically acuminate mac and 1 distal mac, posteriorly with 1 spine and 1 distal smooth chaeta ( Fig. 23AView FIGURE 23); manubrium ventral formula with 1, 0, 2, 0/ 2 and 12 ciliate chaetae, manubrial plate with 3 psp ( Figs 23View FIGURE 23 B–C).

Redescription. Total length (head + body) of the holotype 1.25 mm. Colour pale yellow with purple pigment on distal Ant III–IV, one dark spot laterally on anterior head, and Th II to Abd I, and weakly on Abd II–IV; eyepatches black ( Fig. 1EView FIGURE 1). Scales present on Ant I to basal half of Ant III, dorsal and ventral head, dorsally on Th and Abd, legs (except claws), anterior collophore, and ventrally on manubrium and dens.

Antennal ratio as I: II: III: IV = 1: 1.89: 1.85: 2.96. Ant III apical organ with 2 sens type a, 3 guard sens (type d), sens of different sizes (type b –d) and chaetae types g –h; sens type– f absent ( Fig. 19AView FIGURE 19). Eyes A and B larger, G smaller, others subequal ( Fig. 19BView FIGURE 19). Head dorsal chaetotaxy with 11 ‘An’, 5 ‘A’, 5 ‘M’, 5 ‘S’, 3 ‘Ps’, 6 ‘Pa’, 2 ‘Pm’, 6 ‘Pp’ and 2 ‘Pe’ chaetae ( Fig. 19BView FIGURE 19). Clypeal formula with 4 (l1–2), 4 (f1–2), 3 (pf0–1) ciliate chaetae, l2 larger, l1 apically acuminate, f2 smaller, others subequal ( Fig. 19CView FIGURE 19). Outer labral papillae subequal to inner papillae (as Fig. 8EView FIGURE 8). Ventral chaetotaxy with 13 ciliate chaetae, anterior postlabial formula with 4 (G1–4), 2 (H2–3), 3 (J1–3) plus 3 chaetae below ‘J’ series, basal chaeta (b.c.) larger ( Fig. 19DView FIGURE 19).

Thoracic chaetotaxy ( Figs 20View FIGURE 20 A–B). Th II, series ‘a’, ‘m’ and ‘p’ with 8, 11 and 17–18 chaetae, respectively (m 1i and p 1i 2 absent). Th III, series ‘a’, ‘m’ and ‘p’ with 8, 5 and 8 chaetae, respectively. Th II: III ratio as 1.43: 1.

Abdominal chaetotaxy ( Figs 20View FIGURE 20 C–E, 21View FIGURE 21 A–B). Abd I, series ‘a’, ‘m’ and ‘p’ with 5, 5 and 2 mic, respectively. Abd II, series ‘a’, ‘m’ and ‘p’ with 5, 7 and 3 chaetae, respectively; chaeta el present, bothriotricha a5 and m2 with 5 and 3–4 accessory chaetae, respectively. Abd III, series ‘a’, ‘m’ and ‘p’ with 6, 6 and 5–6 chaetae, respectively; 4 accessory chaetae around bothriotrichum m2, and 10 between bothriotricha a5 and m5. Abd IV with 8–9 medial mac of series ‘A’ to ‘T’ (A3a –3, A5, B3–6, C1, T1), and 12–14 lateral mac of series ‘E’ to ‘Fe’ (E2–4p, Ee10, F1– 3, Fe2–5); postero-medial face with 4 sens and 4 posterior mes. Abd V, series ‘a’, ‘m’, ‘pa’, ‘p’ and ‘pp’ with 4, 6, 3, 7 and 3 chaetae, respectively. Abd III: IV ratio as 1: 4.33.

Legs with subcoxa I carrying 3 ciliate chaetae and 2 psp; subcoxa II with an anterior row of 9 chaetae, posterior row with 3 chaetae and 3 psp; subcoxa III with one row of 7 chaetae and 2 posterior psp ( Figs 22View FIGURE 22 A–C). Trochanteral organ with 18 spine-like chaetae ( Fig. 22DView FIGURE 22). Femur I of males with 6–8 thin spines ( Fig. 22EView FIGURE 22). Tibiotarsus I with one row of 9 inner chaetae, 4 proximal spines finely ciliate (3 short and 1 larger) and 5 distal spine-like mac heavily ciliate and apically acuminate ( Fig. 22EView FIGURE 22). Unguis with median tooth marginally larger than basal teeth, apical tooth smaller; ratio unguis:unguiculus = 1:0.50. Tibiotarsus III with “smooth” chaeta subequal to unguiculus; tenent hairs 1.08 larger than ungues outer face (as Fig. 12GView FIGURE 12). Collophore ( Fig. 23AView FIGURE 23) with anterior face carrying 10 chaetae, 1 mac and 1 distal mes of unequal size, 4 longer and acuminate and 4 proximal spine-like chaetae; posterior face with 2 chaetae, 1 spine and 1 distal smooth chaeta; lateral flap with about 7 smooth and 7 ciliate chaetae. Furcula ( Fig. 23View FIGURE 23 B–C). with ventral manubrium of formula 1, 0, 2, 0/ 2 (subapical) and 12 (apical) ciliate chaetae, apical inner chaeta smaller; dorsal manubrial plate with 4 ciliate chaetae and 3 psp.

Remarks. Tyrannoseira diabolica  resembles T. sex  in having reduced pigment and in general morphology. Differences between these species are given in Table 1.














Tyrannoseira diabolica Bellini & Godeiro, 2012

Cipola, Nikolas Gioia, Morais, José Wellington De, Godeiro, Nerivania Nunes & Bellini, Bruno Cavalcante 2019