AnimaliaacceptedgenusAccepted
Amazhomidia
Cipola NG & Bellini BC, 2016
GBIF:8600787
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Species
PROFILE
Species Profile
Habitat
Terrestrial
ABOUT
Descriptions(8)
Key to Amazhomidia species
1 Cephalic groove with 1+1 surrounding scale-like chaetae (Fig. 10).............................................. 2
- Cephalic groove only with surrounding ciliate chaetae, scale-like chaetae absent (Figs 5D, 18E)....................... 3
2 Body dark blue; dorsal head with 4 mac on Gr. II (Fig. 18B); Th II with m2, m 2i and m4p mac (Fig. 6A); Brazil ...................................................................................... A. ducke Cipola & Bellini 2016
- Body dark yellow (Fig. 9); dorsal head with 5-6 mac on Gr. II (Fig. 13C); Th II without m2, m 2i and m4p mac (Fig. 14A); Brazil ................................................................................. A. thaisae sp. nov.
3 Antennal bulb absent (Fig. 3B); dorsal head with M1 and S1 mac respectively on median and sutural series (Fig. 5B); basomedian labial field with chaetae m1–2 (Fig. 5D); Abd II with 4 median mac (Fig. 6D); Abd IV with 29–30 median mac (Fig. 7A); Brazil ................................................................................ Amazhomidia sp. 1
- Antennal bulb present (Fig. 17B); head without M1 and S1 mac (Fig. 18B); basomedian labial field only with chaeta m1 (Fig. 18D); Abd II with 3 median mac (Fig. 19B); Abd IV with 17–19 median mac (Fig. 19C); Guyana ............................................................................................. A. guianiensis Womersley comb. nov.
New species, redescriptions and a new combination of Acanthocyrtus Handschin, 1925 and Amazhomidia Cipola & Bellini, 2016 (Collembola, Entomobryidae, Entomobryinae)MagnoliaPress via PlaziNo 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.
Description. Total length (head + trunk) of specimen 3.60 mm. Body mostly golden yellow except most of head, longitudinal bands on the trunk, coxae, distal tibiotarsi, collophore and distal dentes which are depigmented; purple pigment weakly present on distal half of the Ant IV, anterolateral head, Th II to Abd IV laterally forming a very narrow line, coxae and tibiotarsi medio-distally; eyepatches black (Fig. 2). Scales heavily ciliated, short or elongated and apically pointed on Ant I to two thirds of the Ant II, dorsal and lateral head, thorax and abdomen dorsally, femora and proximal half of ventral manubrium; other regions unscaled. Head. Antennae slightly longer than trunk length, ratio antennae: trunk = 1: 0.87; antennal segments ratio as I: II: III: IV = 1: 1.28: 1.13: 2.02 (Fig. 2). Ant IV annulated on distal four fifths, without apical bulb, with s-blunt sens of different sizes, 1 robust subapical s-blunt sens and ciliate chaetae (Figs 3 A ‒ B). Ant III sense organ with 2 rods, 2 spiny guard sensilla, s-blunt sens and ciliate chaetae; subapical scale-like chaeta present (Figs 3 C, 5 A). Ant I dorsally with 4 median mac, 4 distal mes and 3 smooth mic at base (Fig. 13 B). Eyes 8 + 8, G and H smaller, others subequal with 7 interocular chaetae (1 unnamed). Head dorsal chaetotaxy (Fig. 5 B) with 12 ‘ An’, 3 ‘ A’ (A 3 absent), 4 ‘ M’, 9 ‘ S’, 2 ‘ Ps’, 3 ‘ Pi’ (Pi 3 displaced forwards or backwards), 4 ‘ Pa’ (Pa 1 absent), 2 ‘ Pm’, 4 ‘ Pp’ and 3 ‘ Pe’ chaetae (1 of uncertain homology). Clypeal formula with 4 (l 1 ‒ 2), 20 (frontal), 3 (pf 0 ‒ 1) chaetae finely ciliate, l 1 ‒ 2, pf 0 ‒ 1 and three frontal larger, 7 frontal smaller and ciliate, others subequal (Fig. 5 C). Four prelabral smooth chaetae, internal pair bifurcated unequally (Figs 3 D, 5 C); labral formula with 4 (a 1 – 2), 5 (m 0 – 2), 5 (p 0 – 2) smooth chaetae, a 1 not thickest, p 0 – 2 largest. Labral papillae absent. Labial palp with five main papillae (A ‒ E) plus one hypostomal papilla (H) with 0, 5, 0, 4, 4, 2 guard appendages, respectively, lateral process (l. p.) of papilla E finger-shaped and not reaching the papilla base; labium with five smooth proximal chaetae (p. c.) (as in Figs 25 B ‒ C). Maxillary palp with smooth apical appendage (a. a.) and basal chaeta (b. c.) subtly ciliated, thicker and 1.11 longer than the apical; sublobal plate with tree smooth appendages (as in Fig. 18 C). Basomedian and basolateral labial fields with chaetae a 1 - 5, m 1 - 2, r, e, l 1 ‒ 2 smooth, m 2 and r smaller (Fig. 5 D). Ventral head with numerous chaetae finely ciliate of different sizes, 5 anterior postlabial chaetae; cephalic groove without scale-like chaeta and with about 14 surrounding chaetae finely ciliate, 1 median chaeta larger, 2 proximal smaller and 4 thin, others subequal (Fig. 5 D). Thorax chaetotaxy (Figs 6 A ‒ B). Th II (anterior chaetal collar omitted) series ‘ a’, ‘ m’ and ‘ p’ with 29 (21 of uncertain homology), 10 and 16 mac respectively. Th III, series ‘ a’, ‘ m’ and ‘ p’ with 5, 2 and 9 mac respectively. Ratio Th II: III = 2.21: 1. Abdomen chaetotaxy (Figs 4 A ‒ B, 6 C ‒ E, 7 A ‒ B). Abd I with 3 ‒ 4 central (m 2 ‒ 4, m 4 i may be absent) and 2 lateral (m 5, p 6) mac. Abd II, with 4 central mac (a 3, m 3 ‒ 3 e, 3 ep) and 3 lateral mac (m 5 ‒ 6, p 6), bothriotricha a 5 and m 2 with 7 and 10 accessory chaetae respectively. Abd III with 1 central mac (m 3) and 4 lateral mac (a 7?, am 6, pm 6 and p 6), bothriotricha a 5, m 2 and m 5 with 10, 12 and 11 accessory chaetae respectively. Abd IV with 18 ‒ 19 anteromedian mac, 11 posteromedian mac, 14 lateral mac, about 11 mes (2 anterolateral and 9 posterior), about 7 posterior sens (ps type I, others type II), and approximately 33 posterior mes. Abd V, series ‘ m’ and ‘ p’ with 4 and 3 mac respectively. Ratio Abd III: IV = 1: 9.60. Legs. Subcoxa I (outer side) with 4 chaetae plus 1 anterior chaeta and 2 psp; subcoxa II with an anterior row of 11 chaetae plus about 14 anterior chaetae, posterior row of 8 chaetae plus 4 anterior and 3 posterior chaetae and 3 psp; subcoxa III with one row of 8 chaetae, about 24 anterior chaetae and 2 posterior psp (Figs 8 A ‒ C). Trochanteral organ with about 39 spine-like chaetae, 7 arms posteriorly; anterior face with 6 spine-like chaetae (Fig. 8 D). Femora I ‒ III internally with 2 mac (proximal and median) and 1 distal mes finely ciliate and apically acuminate; tibiotarsi I ‒ III internally with 1 proximal mac and 1 median mes finely ciliate and apically slightly acuminate, others subequal (as in Fig. 11 A). Pretarsus with one minute smooth chaeta on anterior and posterior sides. Ungues outer side with a pair of large laterobasal teeth; inner side with 3 teeth, 2 paired basal and 1 unpaired median subequal to basal teeth, apical tooth absent. Unguiculi acuminate, with one small proximal external tooth, other smooth edges; ratio unguis: unguiculus III = 1: 0.61. Tibiotarsus III distally with one inner smooth chaeta 0.83 smaller than unguiculus; tenent hairs not seen (lost in all legs). Collophore. Anterior side with about 32 chaetae finely ciliate, distally 4 mac; posterior side with numerous chaetae finely ciliate, 1 unpaired chaeta medially larger, one pair distally smooth; lateral flap with about 21 smooth chaetae (Fig. 8 E and as in Fig. 11 B). Furcula. Manubrium ventrally with 2 subapical and about 68 chaetae ciliate per side; manubrial plate with 16 ‒ 17 chaetae finely ciliate of different sizes and 3 psp; lateral side with 7 ‒ 8 long distal mac finely ciliate (Figs 8 F ‒ G). Basal two thirds of dens with 45 ‒ 49 dorsal spines striated on irregular inner row; dorsal side with three irregular rows of chaetae finely ciliate, proximal chaetae larger (Figs 4 C, 8 H). Mucro bidentate with apical tooth subequal to proximal, basal spine not surpassing the apex of the proximal tooth.
New species, redescriptions and a new combination of Acanthocyrtus Handschin, 1925 and Amazhomidia Cipola & Bellini, 2016 (Collembola, Entomobryidae, Entomobryinae)
Remarks. Since only one specimen was collected of Amazhomidia sp. 1, we think it's insufficient to describe a new species. In addition, in this description of Amazhomidia sp. 1 was able to track down very few variations (left to right) in chaetotaxy, as in central Abd I (m 4 i present or absent) and anteromedian Abd IV (9 ‒ 10 mac in different arrangements), and this could compromise the species diagnosis, especially in central Th II and antero and posteromedian mac of Abd IV, where there are often variations on number of mac in the genus (Figs 14 A, 15 B ‒ D). However, Amazhomidia sp. 1 is more similar to Amazhomidia guianiensis comb. nov. by cephalic groove without scale-like chaeta and dense dorsal macrochaetotaxy. However, Amazhomidia sp. 1 differs from this species by Ant IV without apical bulb (present in A. guianiensis comb. nov.), Ant III with subapical scale-like chaeta (absent in A. guianiensis comb. nov.), unguiculi I ‒ III acuminate (subexcavate in A. guianiensis comb. nov.), manubrium ventrally with about 68 apical chaetae and 7 ‒ 8 long distal mac on lateral side (33 apical and 5 lateral in A. guianiensis comb. nov.), and dental spines robust and striated (thin and finely ciliate in A. guianiensis comb. nov.). Also, the dorsal chaetotaxy of Amazhomidia sp. 1 differs by head with M 1, S 1 and S 2 e mac (absent in A. guianiensis comb. nov.) and Gr II ‒ III with 6 and 3 mac respectively (4 and 1 in A. guianiensis comb. nov.); Th II with 16 posterior mac (11 in A. guianiensis comb. nov.), Abd I with 2 lateral mac (1 in A. guianiensis comb. nov.), Abd II with 4 median mac (3 in A. guianiensis comb. nov.), and Abd IV with 18 ‒ 19 anteromedian mac (10 in A. guianiensis comb. nov.). Still, Amazhomidia sp. 1 differ by body mostly golden yellow with very feel dark blue or depigmented spots (Fig. 2), while in A. guianiensis comb. nov. is completely dark purple with yellow spots on appendages, posterior head and medio-dorsal part of Th II and Abd I ‒ IV. Other comparisons among species are presented in Table 1.
New species, redescriptions and a new combination of Acanthocyrtus Handschin, 1925 and Amazhomidia Cipola & Bellini, 2016 (Collembola, Entomobryidae, Entomobryinae)
Examined material. Female on slide (066 / INPA): Brazil, Roraima, Caracaraí municipality, National Park " Serra da Mocidade ", 01 ° 36 ’ N, 61 ° 54 ’ W, Amazon forest, 1050 m, 25. i ‒ 06. ii. 2016, pitfall-trap, M Oliveira, FF Xavier & T Mahlmann coll.
New species, redescriptions and a new combination of Acanthocyrtus Handschin, 1925 and Amazhomidia Cipola & Bellini, 2016 (Collembola, Entomobryidae, Entomobryinae)
Diagnosis of genus. Heavily striate apically pointed scales on dorsal head, thorax and abdomen (Fig. 2), absent on antennae, legs, collophore and furcula; antennae with 4 segments, Ant. IV annulate, without apical bulb (Figs 10, 15); eyes 8 + 8; prelabral chaetae bifurcate; labral papillae absent (Figs 13 – 14); cephalic groove with scale-like chaetae (Figs 3, 20); macrochaetotaxy relatively dense; Abd. II – IV bothriotrichal formula 2, 3, 2; accessory microchaetae of bothriotrichal complexes elongated; ms and sens formula of Th. II – Abd. V as 1, 0 | 1, 0, 1, 0, 0 and 2, 2 | 1, 1, 2, 14, 3, respectively (Figs 13, 22 – 28); Abd. IV well developed, several times the length of Abd. III in the midline (Figs 1, 26 – 27); unguis with 3 inner (two basal paired and one median unpaired) and 2 large laterodorsal teeth; unguiculi I – II truncate, unguiculus III acuminate, with small external basal small tooth; tenent hairs capitate, slightly longer than unguis (Figs 33 – 35); tenaculum with 4 + 4 teeth and one basal, multi-laterally ciliate chaetae (Fig. 37); male genital plate papillate, surrounded by ciliate chaetae (Fig. 38); manubrium lateral face with long distal mac (Fig. 40); dental spines present and striated; mucro bidentate with basal spine reaching subapical tooth (Figs 41 – 42; Tab. 1).
A new genus of Entomobryinae (Collembola, Entomobryidae) from Brazilian Amazon with body scales and dental spines
Remarks. Amazhomidia gen. nov. is given generic status within the group of other Homidia - like genera because of a combination of characters. These are prelabral chaetae bifurcate, labial chaetae ciliated (except R sometimes smooth or absent), manubrium with long distal mac, and Abd. IV with two transverse rows of mac on anterior central region (Figs 3, 14, 19, 27, 40). These features combined with body scales, cephalic groove with very distinct scale-like chaetae and one row of ciliate spines on dens differ from all other genera of Entomobryinae.
A new genus of Entomobryinae (Collembola, Entomobryidae) from Brazilian Amazon with body scales and dental spines
Etymology. The genus was named after the region in which is was collected and because it is most similar to Sinhomidia in morphology.
A new genus of Entomobryinae (Collembola, Entomobryidae) from Brazilian Amazon with body scales and dental spines
Type species. Amazhomidia ducke sp. nov.
A new genus of Entomobryinae (Collembola, Entomobryidae) from Brazilian Amazon with body scales and dental spines
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GEOGRAPHY
Distribution Map
REGIONS
Geographic Distribution(6)
Amazon
native
N.E. & Central Brazilian
native
Venezuela & Guiana
native
Amazon
native
N.E. & Central Brazilian
native
Venezuela & Guiana
native
DATA
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CLASSIFICATION
Taxonomic Classification Tree
RELATED
Related Name Usages(10)
Matching names from other GBIF-indexed checklists and datasets.
MULTIMEDIA
Media Files(30)
FIGURE 3A–D. Amazhomidia SP. 1: hEAD;A, ANT IV, ARROW INDIcATES ThE bEGINNING Of ANNULATIONS;B, APEX Of ANT IV (DORSAL SIDE),ARROW INDIcATESRObUST SUbAPIcALS-bLUNT SENS;C, APEXOf ANT III (LATERALSIDE),ARROWINDIcATES SUbAPIcALScALE-LIKE chAETA; D, PRELAbRAL chAETOTAXY (DORSAL VIEW).ScALE bARS:A (0.1 MM), B‒D (0.02 MM).
Imageimage/png© Cipola, Nikolas Gioia;Morais, José Wellington De;Bellini, Bruno CavalcanteNew species, redescriptions and a new combination of Acanthocyrtus Handschin, 1925 and Amazhomidia Cipola & Bellini, 2016 (Collembola, Entomobryidae, Entomobryinae)
FIGURE5A–D. Amazhomidia SP.1: hEAD;A, ANT III APIcAL ORGAN (LATERAL SIDE);B, DORSAL cEPhALIc chAETOTAXY,ARROW INDIcATES VARIATION IN MAc PATTERN; C, chAETOTAXY Of PRELAbRUM AND cLYPEUS; D, chAETOTAXY Of bASOMEDIAN AND bASOLATERAL LAbIAL fIELDS, ANTERIOR POSTLAbIALAND cEPhALIc GROOVE REGIONS (LEfT SIDE),LATERAL chAETAE OMITTED.
Imageimage/png© Cipola, Nikolas Gioia;Morais, José Wellington De;Bellini, Bruno CavalcanteNew species, redescriptions and a new combination of Acanthocyrtus Handschin, 1925 and Amazhomidia Cipola & Bellini, 2016 (Collembola, Entomobryidae, Entomobryinae)
FIGURE 6A–E. Amazhomidia sp. 1: dorsal chaetotaxy; A, Th II; B, Th III; C, Abd I; D, Abd II; E, Abd III.
Imageimage/png© Cipola, Nikolas Gioia;Morais, José Wellington De;Bellini, Bruno CavalcanteNew species, redescriptions and a new combination of Acanthocyrtus Handschin, 1925 and Amazhomidia Cipola & Bellini, 2016 (Collembola, Entomobryidae, Entomobryinae)
FIGURE 7A–B. Amazhomidia SP.1: DORSAL chAETOTAXY;A, AbD IV, VARIATION IN MAc PATTERN IN DETAIL; B, AbD V.
Imageimage/png© Cipola, Nikolas Gioia;Morais, José Wellington De;Bellini, Bruno CavalcanteNew species, redescriptions and a new combination of Acanthocyrtus Handschin, 1925 and Amazhomidia Cipola & Bellini, 2016 (Collembola, Entomobryidae, Entomobryinae)
FIGURE 9. Amazhomidia thaisae sp. nov.: hAbITUS Of hOLOTYPE fIXED IN ALcOhOL (LATERAL VIEW).ScALE bAR:0.5 MM.
Imageimage/png© Cipola, Nikolas Gioia;Morais, José Wellington De;Bellini, Bruno CavalcanteNew species, redescriptions and a new combination of Acanthocyrtus Handschin, 1925 and Amazhomidia Cipola & Bellini, 2016 (Collembola, Entomobryidae, Entomobryinae)
FIGURE 10A–B. Amazhomidia thaisae sp. nov.: VENTRAL hEAD (LEfT SIDE); A, LAbIAL PALP, PROXIMAL chAETAE, bASOMEDIAN AND bASOLATERAL fIELDS AND PART Of ANTERIOR POSTLAbIAL chAETOTAXY; B, cOMPLETE chAETOTAXY, ARROWS INDIcATES ScALE-LIKE chAETAE ON cEPhALIc GROOVE ScALE bARS:0.05 MM.
Imageimage/png© Cipola, Nikolas Gioia;Morais, José Wellington De;Bellini, Bruno CavalcanteNew species, redescriptions and a new combination of Acanthocyrtus Handschin, 1925 and Amazhomidia Cipola & Bellini, 2016 (Collembola, Entomobryidae, Entomobryinae)
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