Entomobrya bicyana, Viana & Morais & Cipola, 2024
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publication ID |
https://doi.org/ 10.11646/zootaxa.5452.1.1 |
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publication LSID |
lsid:zoobank.org:pub:093738EB-2BEE-4DFA-B930-FAC1FBF08FA4 |
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DOI |
https://doi.org/10.5281/zenodo.11232733 |
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persistent identifier |
https://treatment.plazi.org/id/062587E9-C711-FE79-FF7C-C261FD3F26A6 |
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treatment provided by |
Plazi |
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scientific name |
Entomobrya bicyana |
| status |
sp. nov. |
Entomobrya bicyana sp. nov. Viana & Cipola
Figs 48–53 View FIGURE 48 View FIGURE 49 View FIGURE 50 View FIGURE 51 View FIGURE 52 View FIGURE 53 , 72 View FIGURE 72 , Table 3
Type Material. Holotype male on slide ( INPA-CLL 0000354 ): Brazil, Tocantins state, Palmas municipality, Ecological farm of “Taquaruçu”, 10°15’S, 48°08’W ( Fig. 72 View FIGURE 72 ), 619 m, 13–20.v.2013, pitfall-trap, AS Lopes coll. Thirty four paratypes: 5 males and 8 females on slides and 9 specimens in alcohol ( INPA-CLL 0000355-368 ), 1 male and 4 females on slides ( CC / UFRN), 4 females on slides ( MNRJ), and 3 females on slides ( MZUSP), same date as holotype. GoogleMaps
Other examined material. One male on slide ( ABAM / UFMT): Mato Grosso state, Santa Cruz do Xingu municipality, State Park of “Xingu”, 09°51’22.50”S, 52°29’23.00”W ( Fig. 72 View FIGURE 72 ), 273 m, 11–13.ii.2021, pitfall-trap, I Fagner & M Penhavek coll. GoogleMaps
Diagnosis. Dark blue pigments on head, Th II to Abd I, distal 2/3 of Abd IV, Abd V with a thin transverse band of pigment ( Figs 48A–B View FIGURE 48 ); Ant IV with a bilobed apical bulb ( Fig. 49A View FIGURE 49 ); pl1–2 chaetae weakly serrated ( Fig. 49D View FIGURE 49 ); head macrochaetotaxy with 5–6 ‘ An ’, 4 ‘ A ’, 3–4 ‘ M ’, 7–8 ‘ S ’, 1 ‘ Ps ’, 4 ‘ Pa ’, 2 ‘ Pi ’, 2 ‘ Pm ’, 1 ‘ Pmp ’, 4 ‘ Pp ’, 1 ‘ Ppe ’ and 4 ‘ Pe ’ mac, respectively ( Fig. 50A View FIGURE 50 ); labral papillae apically rounded, inner eventually truncate ( Fig. 50B View FIGURE 50 ); labial papilla E l.p. finger-shaped and almost reaching the base of a.a. ( Fig. 50C View FIGURE 50 ); Th II internally with 6–7 anterior, 2–3 median and 13–16 posterior mac; Th III–Abd I with 21–27 and 9–12 mac, respectively; Abd II–III with 4–5 and 1–2 inner mac, respectively; Abd IV with 6–10 inner and 13–16 outer mac ( Figs 51A–C View FIGURE 51 ); unguiculus III ai and pi lamellae excavate, pe serrated ( Fig. 52E View FIGURE 52 ); collophore anteriorly with 3 distal mac ( Fig. 53A View FIGURE 53 ); dens distally only with regular chaetae; mucro proximal tooth larger than the distal one, basal spine surpassing the apex of the proximal tooth ( Fig. 53D View FIGURE 53 ).
Description. Total length (head + trunk) of specimens 1.00– 1.52 mm (n=4), holotype 1.00 mm. Specimens pale white to yellowish with dark blue pigments on head, Th II to Abd I entirely, distal 2/3 of Abd IV, Abd V with a thin transverse band of pigment; coxa I–III and collophore (except for the distal region) completely pigmented. Ant II proximal region and Abd VI with weak bluish pigments, eyepatches black ( Figs 48A–B View FIGURE 48 ).
Head. Antenna shorter than the trunk length ( Fig. 48B View FIGURE 48 ), ratio antennae: trunk = 0.57–0.84: 1 (n=3), holotype 0.77: 1; antennal ratio as I: II: III: IV = 1: 1.01–1.88: 1.34–1.83: 2.08–2.88 (n=4), holotype 1: 1.63: missing: 2.88. Ant IV weakly annulated on its distal 3/4, distally with a bilobed apical bulb, 1 lateral pin projection, at least 3 apical finger-shaped sens, and numerous sens of different sizes ( Fig. 49A View FIGURE 49 ). Ant III sense organ with 2 finger-shaped sens, 3 guard sens and numerous sens of different sizes ( Fig. 49B View FIGURE 49 ). Ant II dorsally with about 2 inner elongated sens, 3 dorsal and 2 ventral mac ( Fig. 49C View FIGURE 49 ). Ant I dorsally with 4 mac and 3 smooth mic at the base, without elongated sens ( Fig. 49C View FIGURE 49 ). Eyes A and B larger, G and H slightly smaller than the others, with 4 interocular mes (v, s, p, t); head dorsal chaetotaxy ( Fig. 50A View FIGURE 50 ) with 5–6 ‘ An ’, 4 ‘ A ’, 3–4 ‘ M ’, 7–8 ‘ S ’, 1 ‘ Ps ’, 4 ‘ Pa ’, 2 ‘ Pi ’, 2 ‘ Pm ’, 1 ‘ Pmp ’, 4 ‘ Pp ’, 1 ‘ Ppe ’ and 4 ‘ Pe ’ mac, respectively. Clypeal formula with 4 (l1–2), 10 (f), 5 (pf0–2) ciliate chaetae, l1–2 longer and ciliate, apically acuminate, 4 f and pf2 smaller than the others, others subequal ( Fig. 49D View FIGURE 49 ). Prelabral chaetae weakly serrated ( Fig. 49D View FIGURE 49 ). Four apically rounded labral papillae, inner papillae slightly truncated ( Fig. 50B View FIGURE 50 ). Labial papilla E l.p. finger-shaped and almost reaching the base of a.a. ( Fig. 50C View FIGURE 50 ). Maxillary palp b.c. 1.05 longer than t.a. Basolateral and basomedian labial fields with M1–2, R, E, L1–2 ciliate, M2 and R subtly smaller than the others, both present or absent. Cephalic groove with 8 ciliate chaetae of different sizes; postlabial formula with 4 (G1–4), 3 (X2–4), 4 (H1–4) chaetae ( Fig. 50D View FIGURE 50 ).
Thorax chaetotaxy ( Fig. 51A View FIGURE 51 ). Th II a, m and p series (excluding the anterior collar) with 6–7, 2–3 and 13–16 mac, respectively. Th III a, m and p series with 7–9, 4–5 and 10–13 mac, respectively. Ratio Th II: III = 1.79–1.06: 1 (n=4), holotype 1.65: 1.
Abdomen chaetotaxy ( Figs 51B–C View FIGURE 51 ). Abd I a, m and p series with 2–3, 6–8 and 1 mac, respectively. Abd II a, m and p series with 1–2, 4 and 0 mac, respectively, plus el mac present. Abd III a, m and p series with 2, 3–4 and 1–2 mac, respectively, plus 3 extra mac or mes laterally.Abd IV with 6–10 inner mac of A–C series and 13–16 outer mac of T–Fe series; about 11 sens (ps type I and others type II) and 9 posterior mes. Abd V a, m, pa and p series with 4, 3, 2 and 4–6 mac, respectively. Ratio Abd III: IV = 1: 4.05–6.57 (n=4), holotype 1: 5.90.
Legs ( Figs 52A–E View FIGURE 52 ). Subcoxa I with 3 chaetae and 2 psp; subcoxa II with an anterior row of 7–8 chaetae and about 12 anterior chaetae; posterior row of 5 chaetae, 1 anterior and posterior chaeta and 2 psp; subcoxa III with one row of 8 chaetae, about 14 anterior chaetae and 2 psp ( Figs 52A–B View FIGURE 52 ). Trochanteral organ with 18 spine-like chaetae, 4 anterior, 3 posterior, 6 internal, 1 apical and 4 on the distal arm ( Fig. 52C View FIGURE 52 ). Tibiotarsus I–III with 6 inner finely ciliate mac. Unguis b.t. on proximal 1/3, m.t. on distal 1/3 and smaller than b.t., a.t. minute and on distal 1/7. Unguiculus I–III lamellae (ae, ai, pe, pi) smooth and acuminate, except unguiculus I and III ai and pi excavate, only unguiculus III pe serrated. Ratio unguis: unguiculus = 1: 0.61. Tibiotarsus III smooth chaeta 1.06 longer than the unguiculus; tenent hair 1.23 larger than the unguis ( Figs 52D–E View FIGURE 52 ).
Collophore ( Fig. 53A View FIGURE 53 ). Anterior side with about 13 ciliate chaetae, 3 distal mac and about 10 chaetae of different sizes widely distributed on the corpus; posterior side with about 19 ciliate chaetae of different sizes widely distributed on the corpus (3 unpaired) and distally with 1 smooth chaeta; lateral flap with 11–12 chaetae, 7 smooth and 4–5 ciliate.
Furcula ( Figs 53B–D View FIGURE 53 ). Manubrium ventrally with 2 subapical and about 10 distal ciliate chaetae of different sizes. Manubrial plate dorsally with 5 chaetae of different sizes and 3 psp ( Fig. 53C View FIGURE 53 ). Dens dental lobe with 2 (bs1 and bs2) thicker ciliate chaetae, bs1 subequal to bs2. Dens tightly crenulate on its distal 1/4; distally only with regular chaetae. Mucro proximal tooth larger than distal one, mucronal spine surpassing the proximal tooth apex ( Fig. 53D View FIGURE 53 ).
Distribution. Known from Tocantins and Mato Grosso State, Brazil ( Fig. 72 View FIGURE 72 ).
Etymology. Refers to the two blue pigmented regions of the body ( Figs 48A–B View FIGURE 48 ) present in new species (from Latin: bi —two, and from Greek: cyano —blue).
Remarks. Entomobrya byciana sp. nov. resembles E. ataquensis Arlé, 1959 from Serra da Mantiqueira (Minas Gerais and São Paulo states), by body almost completely pigmented ( Figs 48A–B View FIGURE 48 ), Ant IV apical bulb present ( Fig. 49A View FIGURE 49 ), and unguiculus ai lamella excavate ( Figs 52D–E View FIGURE 52 ). However, E. bicyana sp. nov. differs from this species by And II to Abd IV with a depigmented transverse band ( Figs 48A–B View FIGURE 48 ), while E. ataquensis has the body almost completely pigmented (sometimes Abd IV–VI depigmented). The new species also differs by Ant IV bilobed apical bulb ( Fig. 49A View FIGURE 49 ) (unilobed on E. ataquensis ), unguiculus III pe lamella serrated (smooth in E. ataquensis ), and proximal mucronal tooth larger than the apical one (subequal in E. ataquensis ) ( Figs 52D–E View FIGURE 52 ). Other differences between these species are summarized in Table 3.
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.