Haematotropis dentata, 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 : 34-37

publication ID	https://doi.org/ 10.11646/zootaxa.5064.1.1
publication LSID	lsid:zoobank.org:pub:65B0A21A-8B8D-4B55-B6F0-8BE60EB8D3BC
DOI	https://doi.org/10.5281/zenodo.5653744
persistent identifier	https://treatment.plazi.org/id/03876671-FFD0-1518-13C5-CF67FECEA7FC
treatment provided by	Plazi
scientific name	Haematotropis dentata
status	sp. nov.

Treatment

Haematotropis dentata sp. nov.

Figs 24 View FIGURE 24 , 25 View FIGURE 25 , 48C View FIGURE 48 , 52 View FIGURE 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 View FIGURE 25 ); solenomere short, tapered and hooked, projected towards the basal region of acropodite ( Fig. 25A View FIGURE 25 ).

Material examined. Holotype ♂, Brasil, Maranhão, São Luís, IX.1952, Expedição Instituto Butantan ( IBSP 118 View Materials ).

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 View Materials ) ; 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 View FIGURE 24 ).

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 View FIGURE 24 ). 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 View FIGURE 24 ). Gonopodal aperture elliptical, approximately 1.4 mm wide and 0.8 mm long at midpoints. Telson ( Fig. 24D View FIGURE 24 ) 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 View FIGURE 25 ); acropodite elongated, about four times as long as prefemur; median region expanded, cup-shaped in ventral view, with a concavity and cavity ( Fig. 25D View FIGURE 25 ); distal region of the acropodite lightly sinuous, bifurcate, curved ventrally at a 70° angle ( Fig. 25A–D View FIGURE 25 ); VP1 emarginated on posterior region, not very evident, not exceeding the width of ventral region of acropodite, in lateral view ( Fig. 25A, C View FIGURE 25 ); VP2, LP1, LP2, LP3 absent and DP absent ( Fig. 25A–D View FIGURE 25 ). Opening of solenomere located at distal end of acropodite ( Fig. 25A View FIGURE 25 ). Solenomere short, tapering and hooked, projected towards the basal region of acropodite ( Fig. 25A View FIGURE 25 ).

Remarks. First record of anterolateral teeth on paranota of rings 2–17 in Haematotropis . As in H. divergens n. comb. ( Fig. 45A–D View FIGURE 45 ), H. dentata sp. nov. is peculiar by having neither LP1 nor LP2 ( Fig. 25A–D View FIGURE 25 ). Additionally, it corresponds to the smallest species of Haematotropis , with 30 mm in length, and the first recorded from Maranhão ( Fig. 52 View FIGURE 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 View FIGURE 52 ).

Etymology. Specific epithet derived from Latin dentatus, refering to the anterolateral teeth on paranota of rings 2–17. Adjective.