Lepidocyrtoides hopkini, Bellini, 2017

Bellini, Bruno Cavalcante, 2017, The discovery of Lepidocyrtoides Schött, 1917 (Collembola, Entomobryidae, Entomobryinae) from the New World, including three new species from Brazil and one from Australia, Zootaxa 4324 (2), pp. 201-248 : 238-245

Lepidocyrtoides hopkini sp. nov. Cipola & Bellini

FigS 1I –J, 30–35

Diagnosis. Body completely black in adultS ( Fig. 1I); dorSal head with 4 median and 7 Sutural mac; labral papillae with 2 large teeth-like projectionS; baSomedian labial field with chaetae r abSent, M2 ciliate and Smaller; 5 anterior poStlabial chaetae ciliate pluS 2–4 Scale-like chaetae ( FigS 30E, 32C, E–F); Th II with about 68 anterior mac and 9 poSterior mac; Th III–Abd III with 5–6, 0, 3 and 1 median mac reSpectively; Abd IV with 20–25 median mac and 18 lateral mac ( FigS 33, 34A–B); trochanteral organ with about 130 Spine-like chaetae; ungueS without apical tooth; unguiculi acuminate with outer edge with proximal tooth; lateral flap of collophore with about 8 Smooth and 24 ciliate chaetae; manubrial plate with 5–6 blunt mac; dorSal denS with two inner proximal chaetae gently ciliate, without unilaterally ciliate chaetae ( FigS 31B, 35D–F, H).

Type Material. Holotype female on Slide (AMS): AuStralia, New South WaleS, Taree, Lorien Wildlife Refugee , 31°45'04"S, 152°32'03"E, 46 m., 17.i–04.ii.2015, MalaiSe trap, G. & B. WilliamS coll. Paratype on SlideS (AMS): 2 femaleS and 6 SpecimenS in alcohol, Same data aS holotype . ParatypeS on SlideS (AMS): 2 femaleS and 1 juvenile on SlideS and 6 SpecimenS in alcohol, Same data aS holotype, except 26.xi–14.xii.2011 .

Description. Total length (head + trunk) of SpecimenS 4.14–4.46 mm (n=4), holotype 4.37 mm. Adult SpecimenS with body completely black, except depigmented SpotS on head, tergal membraneS, Abd IV anteriorly, tibiotarSuS III and collophore and denteS diStally ( Fig. 1I). Subadult and juvenileS pale white with dark blue pigmentS on Ant I–IV, Th II, Abd I–II, Abd IV–V poSteriorly, tibiotarSi I–II, coxa to femura III, dorSal manubrium and proximal denteS ( Fig. 1J). ScaleS preSent on Ant I to proximal Ant IV, dorSal and ventral head, Th and Abd dorSally, legS (except empodia), collophore anteriorly, dorSal and ventral manubrium, and denteS ventrally.

Head. Antennae Shorter than trunk length ( Fig. 1I), ratio antennae: trunk = 1: 1.34–1.55 (n=4), holotype 1.55 mm; antennal SegmentS ratio aS I: II: III: IV = 1: 1.49–1.84: 1.2 4–1.57: 2.39–3.01, holotype 1: 1.49: miSSing: 2.68. Ant IV annulated on diStal four fifthS, with bilobed apical bulb, S-blun t SenS of different SizeS and ciliate chaetae ( Fig. 30A–B). Ant III SenSe organ with 2 elongated rodS, 2 Spiny guard SenSilla, S-blunt SenS and ciliated chaetae ( Fig. 32A). Ant I dorSally with 7 mac and about 26 Smooth mic at baSe ( Fig. 32B). Head dorSal chaetotaxy with 13 antennal (An), 5 anterior (A), 4 median (M), 7 Sutural (S), 1 poSt-Sutural (PS), 2 poStoccipital anterior (Pa) 1 poStoccipital poSterior (Pp) chaetae, pluS 1 extra mac of uncentain homology ( Fig. 32E). EyeS G and H Smaller, A and B larger, otherS Subequal, with 6 interocular chaetae, without ScaleS ( FigS 32E). Clypeal formula with 4 (l1–2), 21 (frontal), 3 (pf0–1) ciliate chaetae, l1–2 acuminate and long, pf0–1 larger, 6 frontal Smaller, otherS Subequal ( Fig. 32D). Prelabral chaetae Smooth; labrum with chaeta a1 not thick, p0–2 larger. Labral papillae with 2 large teeth-like projectionS apically acuminate and 1 Small outer projection ( Fig. 32C). Maxillary palp with Smooth apical appendage (a.a.) and baSal chaeta (b.c.) gently ciliate, thick and 1.06 larger in length than the apical; Sublobal plate with three Smooth appendageS. Labial palp with five main papillae (A–E) pluS one hypoStomal papilla (H) with 0, 5, 0, 4, 4, 3 guard appendageS, reSpectively, lateral proceSS (l.p.) apically pointed and not reaching the baSe of the papilla E. BaSolateral and baSomedian labial fieldS with chaetae M1–2, E, L1–2, M2 Smaller, r abSent (Similar to L. villasboasi , Fig. 26D). Ventral head with numerouS ciliate chaetae of different SizeS, 5 anterior poStlabial chaetae pluS 4 Scale-like chaetae; cephalic groove with about 27 Surrounding ciliate chaetae, 11 median mic, 2 larger baSal chaetae (b.c.), otherS Subequal ( FigS 30E, 32F).

Thorax chaetotaxy ( FigS 33A–B). Th II with about 71 antero-median chaetae, 68 mac; poSteriorly with 9 median mac, and 1 latero-median (m4). Th III with 5–6 median mac (a1–2, p1–3, p2e may be abSent) and 2–3 lateral mac (m6, p5–6, p 5 may be abSent). Ratio Th II: III = 2.86–2.22: 1 (n=4), holotype 2.86: 1.

Abdomen chaetotaxy ( FigS 30C–D, 33C–D, 34A–C). Abd I without central mac. Abd II with 3 central mac (m3, m3e– 3ei) and 2 lateral mac (m5–6), 2 meS, bothriotricha a5 and m2 with 12 and 6 acceSSory chaetae reSpectively. Abd III with 1 central mac (m3) and 5 lateral mac (m7?, am6, pm6, p6–7), bothriotricha a5, m2 and m5 with 11, 8 and 8 acceSSory chaetae reSpectively, and 4 lateral meS. Abd IV with 20–25 median mac, 18 lateral mac, bothriotricha T2 and T4 with 10 and 6 acceSSory chaetae reSpectively, 12 poSterior SenS (ps type I, otherS type II), and aproximatelly 18 poSterior meS. Abd V with SerieS ‘a’, ‘m’ and ‘p’ with 4, 4 and 5 mac reSpectively. Ratio Abd III: IV = 1: 4.05–5.04 (n= 4), holotype 1: 4.84.

LegS. Subcoxa I (outer Side) with 7 chaetae on two rowS and 10 pSp; Subcoxa II with an anterior row of 15 chaetae pluS about 18 chaetae anteriorlly, poSterior row of 7 chaetae and 8 pSp; Subcoxa III with one row of 10 chaetae pluS about 15 anterior chaetae, and 2 pSp poSteriorlly ( Fig. 35A–C). Trochanteral organ with about 130 Spine-like chaetae ( Fig. 35D). Femora I–III with 2 inner chaetae (Submedian and diStal) gently ciliate. TibiotarSi I– III Subdivided or not on diStal two thirdS and with at leaSt 15 inner mac gently ciliate each; outer Side with ate leaSt 5 long ciliate apically acuminate chaetae ( Fig. 30F). UngueS outer Side with a pair of large laterobaSal teeth and one unpaired proximal tooth; inner Side with 3 teeth, 2 paired baSal and 1 unpaired median Smaller than baSal teeth, apical tooth abSent. Unguiculi I–III acuminate, with poSterior and outer edgeS Serrated, outer edge with one Small proximal tooth, inner edge Smooth; ratio unguiS: unguiculuS = 1: 0.59. TibiotarSuS III diStally with one inner Smooth chaetae 1.24 larger than unguiculuS; outer Side with tenent hair capitate, gently ciliate, and 0.77 Smaller than unguiS outer edge ( FigS 30G, 35E).

Collophore. Anterior Side with 28 ciliate chaetae, 6 diStally of different SizeS, 2 apically acuminate, 12 thin and 7 Smaller chaetae widely diStributed; poSterior Side with one unpaired proximal mac, 19 meS (3 unpaired), about 32 ciliate chaetae, and 26 ciliate mic widely diStributed, and diStally 1 thick Smooth chaeta; lateral flap with about 8 Smooth chaetae and 24 ciliate chaetae ( Fig. 35F).

Furcula. Ventral manubrium with 4 apical ciliate chaetae, 7 outer Scale-like chaetae and about 26 apical long ScaleS, and 13 Subapical ScaleS on one tranSverSe row per Side ( FigS 31A, 35G). Manubrial plate with 5–6 blunt mac gently ciliate and apically bullet-like, 15 ciliate chaetae of different SizeS, and 2 pSp. DorSal denS with two inner proximal chaetae gently ciliate, without unilaterally ciliate chaetae ( FigS 31B, 35H). Mucro bidentate with apical tooth Subequal to proximal tooth, baSal Spine not SurpaSSing the apex of the proximal tooth.

Etymology. The new SpecieS honorS Dr. Stephen P. Hopkin (in memoriam), reSearcher and author of the book “Biology of SpringtailS” ( Hopkin 1997) of great importance for Collembola SpecialiStS.

Remarks. Lepidocyrtoides hopkini sp. nov. reSembleS L. flavocinctus Schött, 1917 by body of adultS completely black, Ant IV with bilobed apical bulb, prelabral chaetae Smooth, Th II with 9 poSterior mac, Th III uSually with 6 central mac, Abd I devoid of mac, Abd II with 3 central mac, unguiculuS acuminate and manubrium with dorSal ScaleS (See Schött 1917: 42; WomerSley 1934: 120; YoShii & GreenSlade 1994: 11). However, L. hopkini sp. nov. differS from thiS SpecieS by baSomedian labial field without r chaeta and ungueS without apical tooth, both preSent in L. flavocinctus . Other differenceS of L. hopkini sp. nov. are trochanteral organ with about 130 Spine-like chaetae (about 40 in L. flavocinctus ); proximal unguiculuS with outer tooth (abSent in L. flavocinctus ); lateral flap of collophore with 8 Smooth chaetae and 24 ciliate chaetae (2 Smooth and 10 ciliate in L. flavocinctus ), and manubrial plate with 5–6 blunt mac (4 in L. flavocinctus ).