Haematotropis melgacensis, 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 : 48-50

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.5653769
persistent identifier	https://treatment.plazi.org/id/03876671-FFDE-150D-13C5-C8EDFB1AA048
treatment provided by	Plazi
scientific name	Haematotropis melgacensis
status	sp. nov.

Treatment

Haematotropis melgacensis sp. nov.

Figs 1F View FIGURE 1 , 2F View FIGURE 2 , 34 View FIGURE 34 , 35 View FIGURE 35 , 49B View FIGURE 49 , 51 View FIGURE 51

Diagnosis. Adult males of H. melgacensis sp. nov. differ from other Haematotropis species based on the following combination of characters: gonopod with presence of VP2 ( Fig. 35A, C View FIGURE 35 ); LP1 long, tapered, inclined, apex projected towards the mesal region of acropodite ( Fig. 35A–D View FIGURE 35 ); solenomere long and taparared, projected towards the ventral region of the body ( Fig. 35A, C View FIGURE 35 ).

Material examined. Holotype ♂, Brasil, Pará , Melgaço, Estação Científica Ferreira Penna, 29.XI-03.XII.2012, C.S. Costa leg. ( IBSP 3640 View Materials ).

Paratypes: All from Brasil: 2 ♂♂, Pará , Melgaço , Estação Científica Ferreira Penna , 29.XI–03.XII.2012, C.S. Costa leg. ( IBSP 3640 View Materials ); 1 ♂, Pará , Melgaço, Estação Científica Ferreira Penna, FLONA Caxiuanã (01º44’18.02”S, 51º27’48.01”W), 06.IV.2002, A.B. Bonaldo leg. ( INPA); 1 ♂, Pará , Boca do Cuminá Mirim, 19–26.I.1968, E.P.A. leg. ( INPA) GoogleMaps .

Additional material: 1 ♂, Brasil, Pará , Melgaço, Estação Científica Ferreira Penna, 29.XI–03.XII.2012, C.S. Costa leg. ( IBSP 3640 View Materials ) .

Description.

Size and form (holotype ♂). Body length = 60 and wide = 7 mm. TL/GW = 8.5.

Coloration (long preserved in 70% ethanol). Head, prozonite, metazonite and telson brown, sides of metazonite, paranota, legs and posterior region of epiproct yellow, antennomeres orange ( Fig. 34A–D View FIGURE 34 ).

Head. Dorsal surface smooth and shiny, without microgranulations.

Trunk. Collum 2.7 mm long, 7.0 mm wide; dorsal surface of all rings smooth and shiny, without microgranulation; posterolateral margins slightly concave ( Fig. 34A, B View FIGURE 34 ). 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 View FIGURE 2 ). Lateral margins of ring 2 projected posteriad ( Fig. 34A, B View FIGURE 34 ). Gonopodal aperture elliptical, approximately 2.1 mm wide and 1.3 mm long at midpoints. Telson ( Fig. 34D View FIGURE 34 ) smooth and shiny, without microgranulations.

Legs. Smooth and shiny, without microgranulations.

Gonopods. Left gonopod structure as follows: coxa with lateral swelling at midlength absent ( Fig. 35A, C View FIGURE 35 ); acropodite elongated, about four times as long as prefemur; median region expanded, cup-shaped in ventral view, with a concavity and cavity ( Fig. 35D View FIGURE 35 ); distal region of acropodite strongly sinuous, not bifurcate, narrow, curved ventrally at a 75° angle ( Fig. 35A–D View FIGURE 35 ); VP1 and VP2 emarginated on posterior region, evident, VP1 not exceeding the width of ventral region of acropodite, in lateral view; VP2 exceeding the width of ventral region of acropodite, in lateral view ( Fig. 35A, C View FIGURE 35 ), VP2 greater than VP1 ( Fig. 35A, C View FIGURE 35 ); LP1 long, tapered, inclined and with apex projected towards the mesal region ( Fig. 35A–D View FIGURE 35 ), LP2, LP3 and DP absent. Opening of solenomere not located at distal end of acropodite. Solenomere long, tapered and projected towards the ventral region of the body ( Fig. 35A, C View FIGURE 35 ).

Remarks. This is the only species of the genus with VP2 ( Fig. 35A–C View FIGURE 35 ). Similar to H. octocentra with respect to the expanded distal region of the acropodite and size of solenomere ( Figs 14A–D View FIGURE 14 , 35A–D View FIGURE 35 ). However, it differs by the distal region being less ventrally curved and LP1 tapering ( Fig. 35A, C View FIGURE 35 ). The distal region of acropodite in H. octocentra is strongly curved and LP1 is wide ( Fig. 14A–D View FIGURE 14 ).

Variations. The metazonite and prozonite may be yellowish, with asymmetrical spots ranging from light brown to dark brown and paranota yellow in some specimens.

Distribution. Brazil: Pará ( Fig. 51 View FIGURE 51 ).

Etymology. The species name refers to the type locality: Melgaço, Pará State, Brazil.