Haematotropis disjunctoides, De & Bueno-Villegas & Rafael, 2021

De, Thaís M., Bueno-Villegas, Almeida Julián & Rafael, José A., 2021, Taxonomic review of the millipede genus Haematotropis Jeekel, 2000 (Diplopoda, Polydesmida, Aphelidesmidae, Aphelidesminae) with descriptions of thirteen new species, Zootaxa 5064 (1), pp. 1-71 : 37-40

Haematotropis disjunctoides sp. nov.

Figs 1B , 26 , 27 , 48D , 52

Diagnosis. Adult males of H. disjunctoides sp. nov. differ from other Haematotropis species based on the following combination of characters: gonopod with LP1 long and tapered, inclined, apex projected towards the mesal region of gonopod ( Fig. 27A–D ); presence of DP with the apex irregularly bifurcate ( Fig. 27A–C ); solenomere long, taperad, apex truncated, projected towards the ventral region of the body ( Fig. 27A–C ).

Material examined. Holotype ♂, Brasil, Pará , Melgaço , Estação Científica Ferreira Penna, FLONA Caxiuanã (01°44’18.02”S, 51º27’48.01”W), ( MPEG. MYR 082 ).

Paratypes: All from Brasil: Pará, Melgaço, Estação Científica Ferreira Penna , FLONA Caxiuanã (01º44’18.02”S, 51º27’48.01”W), equipe MPEG leg. ( INPA); 1 ♂ , Pará, Melgaço, Estação Científica Ferreira Penna , FLONA Caxiuanã, 09.IV.2002, C. Trinca leg. ( INPA); 1 ♂ , Pará, Melgaço, Estação Científica Ferreira Penna , FLONA Caxiuanã , 09.IV.2002, C. Trinca leg. ( MPEG. MYR 087 ); 1 ♂ , Pará, Melgaço, Estação Científica Ferreira Penna , FLONA Caxiuanã (01º44’15.5”S, 51º26’42.0”W), 10.XII.1997, J.A. R . Bernardi & R .A. T. Rocha leg. ( MPEG. MYR 101 ); 1 ♂ , Pará, Melgaço, Estação Científica Ferreira Penna , FLONA Caxiuanã , 2003, TF 3–4 ( MPEG. MYR 080 ); 1 ♂ , Pará, Melgaço, Estação Científica Ferreira Penna , FLONA Caxiuanã ( MPEG. MYR 080 ); 1 ♂ , Pará, Estação Científica Ferreira Penna, FLONA Caxiuanã ( MPEG. MYR 086 ); 1 ♂ , Pará, Estação Científica Ferreira Penna , FLONA Caxiuanã , 2003, TF 3–4 ( INPA); 1 ♂ , Pará, Estação Científica Ferreira Penna , FLONA Caxiuanã (01º44’18.02”S, 51º27’48.01”W, 2003), ( INPA); 1 ♂ , Pará, rio Xingu, margem esquerda, terra firme, Vitória do Xingu , 28.XI.2000, R . Santos et al. leg. ( MPEG. MYR 098 ); 1 ♂ , Pará, rio Xingu, margem esquerda, terra firme, Vitória do Xingu , 18.XI.2000, R . Santos leg. ( MPEG. MYR 111 ); 1 ♂ , Pará, Breves , RESEX Mapuá , 4–8.XII.2012, Cristiano Sampaio Costa leg. ( IBSP 3639 ); 1 ♂ , Pará, Breves , RESEX Mapuá , 4–8.XII.2012, Cristiano Sampaio Costa leg. ( IBSP 129 ); 1 ♂ , Pará, Breves, Santo Amaro , 03.XII.2012, Cristiano Sampaio & Cleidimar leg. ( IBSP 3646 ); 1 ♂ , Pará, Belterra , FLONA do Tapajós , 10–13.XII.2012, Cristiano Sampaio Costa, Janice F. de Lemos & Livia C.G.C.S. Chagas leg. ( MZUSP 981 ); 1 ♂ , Pará, Santarém, Fazenda Taperinha , 1–11.II.1968, Expedição P.A. leg. ( MZUSP 953 ); 2 ♂♂ , Pará, Boca do Cuminá-Mirim , 19–26.I.1968, E.P.A. leg. ( MZUSP 979 ); 2 ♂♂ , Pará, rio Xingu, margem esquerda, terra firme, Vitória do Xingu , 26.XI.2000, R . Santos et al. leg. ( MPEG. MYR 115 ); 1 ♂ , Pará, rio Xingu, margem esquerda, terra firme, Vitória do Xingu , 23.XI.2000, E.L. Oliveira leg. ( MPEG. MYR 121 ); 2 ♂♂ , Pará, Vitória do Xingu ( MPEG. MYR 118 ); 1 ♂ , Pará, rio Guamá , IAN, VIII .1952, Expedição Instituto Butantan ( IBSP 123 ); 1 ♂ , Pará, rio Guamá , IAN, VIII .1952, Expedição Instituto Butantan ( IBSP 129 ); 1 ♂ , Brasil, Pará, Belterra, Flona do Tapajós , 10–13.XII.2012, Cristiano Sampaio Costa, Janice F. de Lemes, Lívia C.G.C.S. Chagas leg. ( MZUSP 982 ); 3 ♂♂ , Brasil, Pará, Santarém, Fazenda Taperinha , Expedição P.A., 1–11.II.1968 ( MZUSP 953 ); 1 ♂ , Brasil, Pará, Santarém, fazenda Taperinha , X.1970, Experimento Perm. Amaz ( MZUSP 967 ); 3 ♂♂ , Brasil, Pará, Santarém, Fazenda Taperinha , 1–11.II.1968, Experimento Perm. Amaz. ( MZUSP 953 ); 3 ♂♂ , Brasil, Pará, Juruti, Base Capiranga (02º23’S, 56º20’W), S.C. Dias leg., 07.III.2006 ( MPEG. MYR 114 ); 1 ♂ , Brasil, Pará, Alter do Chão (2°31’40”S, 54°57’4.3”W), 1.XI.2014, 39 m, A. Coronato, D. Chirivi, J. Cabra & C. Sampaio leg. ( IBSP 3645 ); 2 ♂♂ , Brasil, Pará, Boca do Cuminá-Mirim , 23.IX.1969, E.P.A. leg. ( MZUSP 955 ); 1 ♂ , Brasil, Pará, Belterra, Flona do Tapajós , 10–13.XII.2012, Cristiano Sampaio Costa, Janice F. de Lemos & Livia C.G.C.S. Chagas leg. ( MZUSP 981 ); 2 ♂♂ , Brasil, Pará, Bôca do Curminá-Mirim , 19–26.I.1968. E.P.A. leg. ( MZUSP 979 ); 1 ♂ , Brasil, Maranhão, São Luiz , IX.1952, Expedição Butantan ( IBSP 118 ) .

Additional material: 1 ♂, Brasil, Pará , Melgaço, Estação Científica Ferreira Penna, FLONA Caxiuanã , 2003, TF 3–4 ( MPEG. MYR 080 ) .

Description.

Size and form (holotype ♂). Body length = 44 and wide = 7 mm. TL/GW = 6.2.

Coloration (long preserved in 70% ethanol). Head, prozonite, metazonite and telson brown, antennomeres, sides of the metazonite, paranota, posterior region of epiproct and legs orange ( Fig. 26A–D ).

Head. Dorsal surface smooth and shiny, without microgranulations.

Trunk. Collum 2.4 mm long, 6.5 mm wide; dorsal surface of all rings smooth and shiny, without microgranulations; posterolateral margins slightly concave ( Fig. 26A, B ). Rings 2–19: prozonite and metazonite smooth and shiny, without microgranulation in dorsal region of all rings. Anterolateral teeth on paranota of rings 2–4 ( Fig. 2G ). Lateral margins of ring 2 projected posteriad ( Fig. 26A, B ). Gonopodal aperture elliptical, approximately 1.5 mm wide and 0.5 mm long at midpoints. Telson ( Fig. 26D ) smooth and shiny, without microgranulations.

Legs. Smooth and shiny, without microgranulations.

Gonopods. Right gonopod structure as follows: coxa with lateral swelling at midlength ( Fig. 27A, C ); acropodite elongated, about four times as long as prefemur; median region expanded, cup-shaped in ventral view, with a concavity and cavity ( Fig. 27D ); distal region of the acropodite strongly sinuous, not bifurcate, curved ventrally at a 75° angle ( Fig. 27A–D ); VP1 emarginated on posterior region, evident, not exceeding the width of ventral region of acropodite, in lateral view ( Fig. 27A, C ); VP2 absent; LP1 long and tapered, inclined with apex projected towards the mesal region of gonopod ( Fig. 27A–D ), LP2 and LP3 absent; presence of DP with the apex irregularly bifurcate and originating above the solenomere, projected to top ( Fig. 27A–C ). Opening of solenomere located at distal end of acropodite, at lateral region, above LP1 ( Fig. 27A–C ). Solenomere long, tapered, truncated apex, projected towards the ventral region of millipede body ( Fig. 27A–C ).

Remarks. H. disjunctoides sp. nov. resembles H. disjuncta in the conformation of the gonopods and presence of DP ( Figs 10A–D , 27A–D ). It differs by DP being bifurcate in the apical region and extending beyond the distal region of acropodite. Besides, H. disjunctoides sp. nov. occurs on the south shore of the Amazon River ( Fig. 52 ) while H. disjuncta occurs mainly on the north shore ( Fig. 50 ), supporting the separation of the two species.

Distribution. Brazil: Pará ( Fig. 52 ).

Etymology. The specific epithet is a combination of the name “ disjuncta ” and the Greek suffix “- oides ”, referring to the similarity of this species to H. disjuncta .

Figures

FIGURE 1. General somatic features of Haematotropis Jeekel, 2000, non-type ♂♂. A. H. jurutiensis sp. nov. (MPEG), head (without antennae), anterior view. B. H. disjuctoides sp. nov. (MPEG), head, ventral view. C. H. jurutiensis sp. nov. (MPEG), antenna, lateral view. D. H. poranga sp. nov. (MPEG), antenna, evidencing the double invagination between the four sensory apical cones and a sensilla basiconica bacilliformia, distal view. E. H. jurutiensis sp. nov. (MPEG), sensory apical cones, distal view. F. H. melgacensis sp. nov. (IBSP), sensilla basiconica bacilliformia, distal view. Abbreviations: gs = gnathochilarial stipites; il = incisura lateralis; l = lingual lobes; m: mentum, sac: sensory apical cones; sbb: sensilla basiconica bacilliformia. Scale bars: 200 μm (A, B), 100 μm (C, D, G), 30 μm (E), 10 μm (F).

FIGURE 2. General somatic features of Haematotropis Jeekel, 2000. A. H. jurutiensis sp. nov., non-type ♂ (MPEG), body ring 7, ventral view. B. H. jurutiensis sp. nov., non-type ♂ (MPEG), body ring 9 (highlighting the microgranulations), ventral view. C. H. jurutiensis sp. nov., non-type ♂ (MPEG), body ring 7, red arrow indicates the wrinkles close to paranota, ventral view. D. H. jurutiensis sp. nov., non-type ♂ (MPEG), body ring 8, red arrow indicates rounded projections on ventral surfaces, ventral view. E. H. jurutiensis sp. nov., non-type ♂ (MPEG), metazonite of body ring 8, red arrow indicates the microgranulations on anterior and posterior margins, dorsal view. F. H. megalcensis sp. nov. non-type ♂ (IBSP), body ring 10, red arrow indicates the microgranulations on anterior and posterior margins, ventral view. G. H. callipa, holotype ♂ (MfN), head and body rings 1–4, red arrow indicates a depression on collum or anterolateral teeth, dorsalateral view. Scale bars: 300 μm (A, E), 200 μm (C, D, F), 100 μm (B), 1 mm (G).

FIGURE 10. Right gonopod of Haematotropis disjuncta Golovatch, Hoffman & Spelda, 2004, holotype ♂ (IEPA). A. Mesal view. B. Dorsal view. C. Lateral view. D. Ventral view. Yellow scale indicates when VP1 exceeds the width of ventral region of acropodite. Abbreviations: Ac = acropodite; Ca = cannula; Cx = coxa; DP = Distal Process 1; LP1 = Lateral Process 1; Pf = Prefemur; S = Solenomere; Sg = Spermatic groove; Ste = setae; VP1 = Ventral Process 1. Scale bars: 1.0 mm.

FIGURE 26. Somatic features of Haematotropis disjunctoides sp. nov., holotype ♂ (MPEG). A. Head and body rings 1–4, dorsal view. B. Head and body rings 1–6, dorsolateral view. C. Body rings 11–14, dorsal view. D. Body rings 18–20, dorsal view. Scale bars: 1.0 mm.

FIGURE 27. Right gonopod of Haematotropis disjunctoides sp. nov., holotype ♂ (MPEG). A. Mesal view. B. Dorsal view. C. Lateral view. D. Ventral view. Yellow scale indicates when VP1 exceeds the width of ventral region of acropodite. Abbreviations: Ac = acropodite; Ca = cannula; Cx = coxa; DP = Distal Process 1; LP1 = Lateral Process 1; Pf = Prefemur; Sg = spermatic groove; S = Solenomere; Ste = setae; VP1 = Ventral Process 1. Scale bars: 1.0 mm.

FIGURE 48. Gonopodal features of Haematotropis Jeekel, 2000 species. A. H. aripuanensis sp. nov., holotype (MZUSP), left gonopod, lateral view. B. H. callyi sp. nov., holotype (INPA), right gonopod, mesal view. C. H. dentata sp. nov., holotype (IBSP), right gonopod, mesal view. D. H. disjunctoides sp. nov., holotype (MPEG), right gonopod, lateral view. E. H. goeldii sp. nov., holotype (MPEG), left gonopod, lateral view. F. H. jurutiensis sp. nov., holotype (MPEG), right gonopod, lateral view. Scale bars: 1.0 mm.

FIGURE 50. Distribution of Haematotropis Jeekel, 2000. Black symbol = H. octocentra (Brölemann, 1905), blue symbol = H. aurorea Jeekel, 2000, orange symbol = H. callipa (Peters, 1864), pink symbol = H. disjuncta Golovatch, Hoffman & Spelda, 2004, red symbol = H. bella (Attems, 1937), white symbol = H. macapa Golovatch, Hoffman & Spelda, 2004, yellow symbol = H. roseicornis Jeekel, 2000.

FIGURE 52. Distribution of Haematotropis Jeekel, 2000. Black symbol = H. jurutiensis sp. nov., green symbol = H. dentata sp. nov., orange symbol = H. goeldii sp. nov., pink symbol = H. aripuanensis sp. nov., red symbol = H. amazonica sp. nov., white symbol = H. disjunctoides sp. nov., yellow symbol = H. callyi sp. nov.