Tyrannoseira sex Bellini & Zeppelini, 2011

Tyrannoseira sex Bellini & Zeppelini, 2011

Figs 1F View FIGURE 1 , 29–34 View FIGURE 29 View FIGURE 30 View FIGURE 31 View FIGURE 32 View FIGURE 33 View FIGURE 34

Tyrannoseira sex Bellini & Zeppelini, 2011: 553 View Cited Treatment , figs. 4–6 (orig. descr.).

Type locality. Brazil, Paraíba State, São João do Cariri , Furna dos Ossos.

Other references: Abrantes et al. 2012: 13 (cat.). Bellini & Godeiro 2012: 84 (species compared). Zeppelini & Lima 2012: 41–43 (species compared).

Type material examined. Holotype male, paratypes 1 male and 5 females (MNRJ/2175).

Typological note. In the original description 6 paratypes deposited in MNRJ were reported but we counted a total of 9 specimens along with paratypes slides. All type material of T. sex deposited at MNRJ was destroyed in fire in September 2018.

Other material examined. 3 males, 4 females and 2 juveniles on slides ( MNRJ / 2175 ): same date of type series. All specimens destroyed in fire in September 2018 .

Diagnosis. Body with pigmentation reduced ( Fig. 1F View FIGURE 1 ); Ant III without sens type– f ( Fig. 29A View FIGURE 29 ); head chaetotaxy without An 3i and An 3i 2 mic, A4 present and with 2 posterior mac ( Pe3 and 1 uncertain) ( Fig. 29B View FIGURE 29 ); clypeus with l1 not apically acuminate, f2 normal ( Fig. 29C View FIGURE 29 ); outer labral papilla gently smaller (as Fig. 24D View FIGURE 24 ); postlabial formula with 2 chaetae below ‘J’ row ( Fig. 29D View FIGURE 29 ); Th II with 6 anterior mac ( a4+, a 4i, a5, a5p, a 5i, a 5i 2), m 1i, p 1i 2 and p1ip mac present, p1ip2 and p2ea2 mac present or absent ( Fig. 30A View FIGURE 30 ); Th III with 1 lateral mac ( m6) ( Fig. 30B View FIGURE 30 ); Abd IV with 5–6 antero-central mac ( A3, B1–3, C1, T1) and 4 mac ( Fe2–5) in Fe series ( Fig. 31A View FIGURE 31 ); trochanteral organ with 23–28 spine-like chaetae ( Fig. 32D View FIGURE 32 ); leg I of males with 8–11 thin femoral spines and 5 tibiotarsal spines finely ciliate ( Figs 32 View FIGURE 32 E–F); collophore anteriorly with 4 mac apically acuminate and 1 distal mac, posteriorly with 2 spines, 1 distal ciliate and 1 smooth chaetae ( Fig. 33A View FIGURE 33 ); manubrium ventral formula with 1, 0, 2, 2/ 4 and 12 ciliate chaetae, manubrial plate with 2 psp ( Figs 33 View FIGURE 33 B–C).

Redescription. Total length (head + body) of the holotype 1.96 mm. Colour pale yellow with light purple pigment on Ant II-IV and one dark blue spot on anterior head; eyepatches black ( Fig. 1F View FIGURE 1 ). Scales present on Ant I to basal one-third of Ant III, dorsal and ventral head, Th and Abd dorsally, legs (except claws), anterior collophore and manubrium and dens ventrally.

Antennal ratio as I: II: III: IV = 1: 1.43: 1.53: 1.79. 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. 29A View FIGURE 29 ). Eyes A larger, G smaller, others subequal ( Fig. 29B View FIGURE 29 ). Head dorsal chaetotaxy with 12 ‘An’, 6 ‘A’, 5 ‘M’, 5 ‘S’, 3 ‘Ps’, 6 ‘Pa’, 2 ‘Pm’, 6 ‘Pp’, 3 ‘Pe’ chaetae plus 1 mac of uncertain homology ( Fig. 29B View FIGURE 29 ). Clypeal formula with 4 ( l1–2), 4 ( f1–2), 3 ( pf0–1) ciliate chaetae, l1–2 larger, others subequal ( Fig. 29C View FIGURE 29 ). Outer labral papillae gently smaller than inner papillae (as Fig. 24D View FIGURE 24 ). Ventral chaetotaxy with 13 ciliate chaetae, anterior postlabial formula with 4 ( G1–4), 3 ( H2–4), 4 ( J1–4) plus 2 chaetae below ‘J’ series, basal chaeta ( b.c.) larger ( Fig. 29D View FIGURE 29 ).

Thoracic chaetotaxy ( Figs 30 View FIGURE 30 A–B) with Th II, series ‘a’, ‘m’ and ‘p’ with 8, 12 and 17–18 chaetae, respectively, m 1i, p 1i 2 and p1ip mac present, p1ip2 and p2ea2 mac present or absent. Th III, series ‘a’, ‘m’ and ‘p’ with 8, 6 and 7 chaetae, respectively. Th II: III ratio as 1.44: 1.

Abdominal chaetotaxy ( Figs 30 View FIGURE 30 C–E, 31 View FIGURE 31 A–B) with Abd I, series ‘a’, ‘m’ and ‘p’ with 5, 5 and 2 mic, respectively. Abd II, series ‘a’, ‘m’ and ‘p’ with 6, 7 and 3 chaetae, respectively; chaeta el absent or not seen, bothriotricha a5 and m2 with 7 and 4 accessory chaetae respectively. Abd III, series ‘a’, ‘m’ and ‘p’ with 6, 7 and 6 chaetae, respectively; 4 accessory chaetae around bothriotrichum m2, and 10 between bothriotricha a5 and m5. Abd IV with 9–10 medial mac of series ‘A’ to ‘T’ ( A3, A5, B1–6, C1, T1), and 14 lateral mac of series ‘E’ to ‘Fe’ ( E2–4p, Ee10, F1–3, Fe2–5); postero-median face with 6 sens and 4 posterior mes. Abd V, series ‘a’, ‘m’, ‘pa’, ‘p’ and ‘pp’ with 4, 6, 4, 7 and 4 chaetae, respectively. Abd III: IV ratio as 1: 3.27.

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 8 chaetae and 2 posterior psp ( Figs 32 View FIGURE 32 A–C). Trochanteral organ with 23–28 spine-like chaetae ( Fig. 32D View FIGURE 32 ). Femur I of males with 8–11 thin spines, holotype with 11 ( Figs 32 View FIGURE 32 E–F). Tibiotarsus I with one row of 10 inner chaetae, 5 proximal spines finely ciliate (3 short and 2 larger) and 5 distal spine-like mac heavily ciliate and apically acuminate ( Fig. 32E View FIGURE 32 ). Unguis with median tooth discretely larger than basal teeth, apical tooth smaller; ratio unguis: unguiculus = 1: 0.50. Tibiotarsus III with “smooth” chaeta 1.22 larger than unguiculus; tenent hairs 0.83 smaller than ungues outer face (as Fig. 12G View FIGURE 12 ).

Collophore ( Fig. 33A View FIGURE 33 ) with anterior face carrying 10 chaetae, 1 distal mac, 4 longer and acuminate, 2 acuminate mes and 3 proximal spine-like chaetae; posterior face with 4 chaetae, 2 spines and 1 distal ciliate and 1 smooth chaeta; lateral flap with about 6 smooth and 5 ciliate chaetae.

Furcula ( Figs 33 View FIGURE 33 B–C) with ventral manubrium of formula 1, 0, 2, 2/ 4 (subapical) and 12 (apical) ciliate chaetae, subapical chaetae of same size, apical inner chaeta smaller; dorsal manubrial plate with 4 ciliate chaetae and 2 psp.

Remarks. Tyrannoseira sex most resembles T. diabolica in having reduced pigmentation and general morphology. Differences are shown in Table 1 View TABLE 1 .