Haematotropis dentata De & Bueno-Villegas & Rafael 2021, sp. nov.
Creators: name: De, Thaís M.
name: Bueno-Villegas, Almeida Julián
name: Rafael, José A.
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Diplopoda
Polydesmida
Aphelidesmidae
Haematotropis
Haematotropis dentata

description: Haematotropis dentata sp. nov.
Figs 24, 25, 48C, 52
Diagnosis. Adult males of H. dentata sp. nov. differ from other Haematotropis species based on the following combination of characters: anterolateral teeth on paranota of rings 2–17. Gonopod without LP1, LP2 and LP3 (Fig. 25A–D); solenomere short, tapered and hooked, projected towards the basal region of acropodite (Fig. 25A).
Material examined. Holotype ♂, Brasil, Maranhão, São Luís, IX.1952, Expedição Instituto Butantan (IBSP 118).
Paratypes: All from Brasil: 1 ♂, Amazonas, Barcelos (sede), 20–26.II.2003, N.O. Aguiar leg. (UFAM); 2 ♂♂, Maranhão, São Luís, IX.1952, Expedição Instituto Butantan (IBSP 118); 1 ♂, Maranhão, São Luís, IX.1952, Expedição Instituto Butantan (INPA).
Description.
Size and form (holotype ♂). Body length = 30 and wide = 4 mm. TL/GW = 7.5.
Coloration (long preserved in 70% ethanol). Head, prozonite, metazonite and telson light brown, antennomeres and legs yellow and paranota salmon, yellowish hemispheric spot in posterior region of metazonite (Fig. 24A–D).
Head. Dorsal surface smooth and shiny, without microgranulations.
Trunk. Collum 1.3 mm long, 4 mm wide; dorsal surface of all rings smooth and shiny, without microgranulations; posterolateral margins slightly concave (Fig. 24A, B). Rings 2–19: prozonite and metazonite smooth and shiny, without microgranulation in dorsal region of all rings. Anterolateral teeth on paranota of rings 2–17. Lateral margins of ring 2 laterally not projected posteriad (Fig. 24A, B). Gonopodal aperture elliptical, approximately 1.4 mm wide and 0.8 mm long at midpoints. Telson (Fig. 24D) smooth and shiny, without microgranulations.
Legs. Smooth and shiny, without microgranulations.
Gonopods. Left gonopod structure as follows: coxa with inconspicuous lateral swelling at midlength (Fig. 25C); acropodite elongated, about four times as long as prefemur; median region expanded, cup-shaped in ventral view, with a concavity and cavity (Fig. 25D); distal region of the acropodite lightly sinuous, bifurcate, curved ventrally at a 70° angle (Fig. 25A–D); VP1 emarginated on posterior region, not very evident, not exceeding the width of ventral region of acropodite, in lateral view (Fig. 25A, C); VP2, LP1, LP2, LP3 absent and DP absent (Fig. 25A–D). Opening of solenomere located at distal end of acropodite (Fig. 25A). Solenomere short, tapering and hooked, projected towards the basal region of acropodite (Fig. 25A).
Remarks. First record of anterolateral teeth on paranota of rings 2–17 in Haematotropis. As in H. divergens n. comb. (Fig. 45A–D), H. dentata sp. nov. is peculiar by having neither LP1 nor LP2 (Fig. 25A–D). Additionally, it corresponds to the smallest species of Haematotropis, with 30 mm in length, and the first recorded from Maranhão (Fig. 52).
Variations. Some specimens from São Luís, Maranhão have hemispherical yellowish spots on the posterior midline of the metazonite and polygonal areas. In the prozonite, there is a midline that divides the light-coloured anterior region and the dark-coloured posterior region.
Distribution. Brazil: Amazonas, Maranhão (Fig. 52).
Etymology. Specific epithet derived from Latin dentatus, refering to the anterolateral teeth on paranota of rings 2–17. Adjective.
description: Published as part of 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, pp. 1-71 in Zootaxa 5064 (1) on pages 34-37, DOI: 10.11646/zootaxa.5064.1.1, http://zenodo.org/record/5653702