Haematotropis mosaica, 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 : 50-53

Haematotropis mosaica sp. nov.

Figs 36 , 37 , 49C , 51

Diagnosis. Adult males of H. mosaica sp. nov. differ from other Haematotropis species based on the following combination of characters: gonopod with LP1 long and tapered, strongly curved apically, apex projected towards the mesal region of gonopod ( Fig. 37A–D ); solenomere long and tapered, truncated apex, projected towards the ventral region region of the body ( Fig. 37A, C ).

Material examined. Holotype ♂, Brasil, Pará , Óbidos , Calha Norte , Estação Ecológica Grão-Pará, Floresta (0º37.831’’S, 55º43.701’’W), 31.I.2009, T. C.S. Ávila-Pires et al. leg. ( MPEG. MYR 123 ).

Paratypes: 1 ♂, Brasil, Pará , Óbidos , Calha Norte , Estação Ecológica Grao Pará, Floresta (0º37.831’’S, 55º43.701’’W), 31.I.2009, T . C.S. Ávila-Pires et al. leg. ( MPEG. MYR 123 ) ; 1 ♂, idem ( INPA) .

Description.

Size and form (holotype ♂). Body length = 42 and wide = 7 mm. TL/GW = 6.

Coloration (long preserved in 70% ethanol). Head, prozonite, metazonite and telson dark brown, polygonal areas in all rings of the metazonite, antennomeres, sides of metazonite, paranota, posterior region of epiproct and legs orange ( Fig. 36A–D ).

Head. Dorsal surface smooth and shiny, without microgranulations.

Trunk. Collum 2.7 mm wide, 7 mm long at midpoints; dorsal surface of all rings smooth and shiny, without microgranulations; posterolateral margins slightly concave ( Fig. 36A, 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 not projected posteriad ( Fig. 36A, B ). Gonopodal aperture elliptical, approximately 1.9 mm wide and 0.8 mm long at midpoints. Telson ( Fig. 36D ) smooth and shiny, without microgranulations.

Legs. Smooth and shiny, without microgranulations.

Gonopods. Right gonopod structure as follows: coxa with inconspicuous lateral swelling at midlength ( Fig. 37A, C ); acropodite elongated, about four times as long as prefemur; median region expanded, cup-shaped in ventral view, with a concavity and cavity ( Fig. 37D ); distal region of acropodite strongly sinuous, bifurcate, narrow, curved ventrally at a 70° angle ( Fig. 37A–D ); VP1 emarginated on posterior region, evident, exceeding the width of ventral region of acropodite, in lateral view ( Fig. 37A, C ); VP2 absent; LP1 long and tapered, strongly curved apically, apex projected towards the mesal region of gonopod ( Fig. 37A–D ), LP2, LP3 and DP absent. Opening of solenomere located at distal end of acropodite ( Fig. 37A, C ). Solenomere long, tapered, truncated apex and projected towards the ventral region of millipede body ( Fig. 37A, B ).

Remarks. Almost all Haematotropis species have polygonal areas on the dorsal region of the metazonites. However, H. mosaica sp. nov. is the only species that has polygonal areas on all rings of body, mainly on the collum ( Fig. 36A–D ). The acropodite distal region is bifurcate as in H. callipa . The difference is that in H. mosaica sp. nov. the solenomere is narrow and projected towards the ventral region of the body ( Fig. 37A, C ), whereas in H. callipa it is wide and projected towards the coxa ( Fig. 4A, B ). Gonopod conformation similar to H. callyi sp. nov., due to sinuosity of distal region of acropodite, but they are differentiated, mainly by the curved LP 1 in H. mosaica sp. nov. ( Fig. 37A–D ), while it is not curved in H. callyi sp. nov. ( Fig. 23A–D ).

Distribution. Brazil: Pará ( Fig. 51 ).

Etymology. The specific epithet mosaicus derives from Latin, making reference to an inlay of small pieces of various colors and patterns, with the polygonal areas on the metazonite of some body rings. Adjective.

Figures

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 4. Left gonopods of Haematotropis callipa (Peters, 1864). A. Holotype ♂ (MfN), lateral view. B, C. Holotype ♂ (MfN), mesal views. D. Holotype ♂ (MfN), ventral view. E. ♂ from Kabelstation, Suriname, dorsal view, modified from Jeekel (2000), without scale. Yellow scale indicates when VP1 exceeds the width of ventral region of acropodite. Red line shows a concavity and cavity in ventral region of the acropodite. Abbreviations: Ac = acropodite; Ca = cannula; Cg = cingulum; Cx = coxa; LP1 = Lateral Process 1; Pf = Prefemur; S = Solenomere; Ste = setae; VP1 = Ventral Process 1. Scale bars: 1.0 mm.

FIGURE 23. Right gonopod of Haematotropis callyi sp. nov., holotype ♂ (INPA). 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; LP1 = Lateral Process 1; Pf = Prefemur; S = Solenomere; Sg = spermatic groove; VP1 = Ventral Process 1. Scale bars: 1.0 mm.

FIGURE 36. Somatic features of Haematotropis mosaica sp. nov., holotype ♂ (MPEG). A. Head and body rings 1–4, dorsal view. B. Head and body rings 1–5, lateral view. C. Body rings 7–10, dorsal view. D. Body rings 18–20, dorsal view. Scale bars: 1.0 mm.

FIGURE 37. Right gonopod of Haematotropis mosaica 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; LP1 = Lateral Process 1; Pf = Prefemur; S = Solenomere; Sg = spermatic groove; Ste = setae; VP1 = Ventral Process 1. Scale bars: 1.0 mm.

FIGURE 49. Gonopodal features of Haematotropis Jeekel, 2000 species. A. H. driki sp. nov., holotype (MNRJ), left gonopod, dorsal view. B. H. melgacensis sp. nov., holotype (IBSP), right gonopod, mesal view. C. H. mosaica sp. nov., holotype (MPEG), right gonopod, mesal view. D. H. paraensis sp. nov., holotype (INPA), left gonopod, mesal view. E. H. poranga sp. nov., holotype (MPEG), right gonopod, mesal view. F. H. tysoni sp. nov., holotype (INPA), left gonopod, lateral view. Scale bars: 1.0 mm.

FIGURE 51. Distribution of Haematotropis Jeekel, 2000. Black symbol = H. paraensis sp. nov., blue symbol = H. poranga sp. nov., orange symbol = H. driki sp. nov., pink symbol = H. melgacensis sp. nov., red symbol = H. mosaica sp. nov., white symbol = H. tysoni sp. nov., yellow symbol = H. divergens comb. nov. (Chamberlin, 1918).