Haematotropis callipa (Peters, 1864)

Figs 2G, 3, 4, 47A, 50

Polydesmus (Euryurus) erythropus Peters, 1864: 541 [preoccupied name by Lucas (1858)].

Polydesmus (Euryurus) callipus Peters, 1864: 624, footnote 1 (replacement name).

Euryurus callipus: Attems (1899: 280) (list).

Aphelidesmus callipus: Attems (1937: 136) (type catalog, Berlin).

Polydesmus erythropus: Attems (1937: 136) (synonymy).

Aphelidesmus surinamensis Jeekel, 1950: 74, figs 10–12.

Polydesmus callipus: Moritz & Fischer (1978: 113) (list).

Haematotropis callipus: Jeekel (2000: 71) (redescription).

“ Haematotropis ” surinamensis: Jeekel (2000: 71) (synonymy).

Diagnosis. Adult males of H. callipa differ from other Haematotropis species based on the following combination of characters: gonopod with LP1 long and wide, projected towards the ventral region of the body, aculeate margins, slightly projected towards the distal end of acropodite (Fig. 4A, B, E); solenomere short and triangular, hemispherical apex, projected towards the coxa (Fig. 4A, B).

Material examined. Holotype ♂ (fixed by monotypy, MfN 121), without exact location.

Redescription.

Size and form. Body length = 39 and wide = 5 mm. TL/GW = 7.8.

Coloration (long preserved in 70% ethanol). Uniformly light brown (Fig. 3A–D).

Head. Dorsal surface not glossy, with microgranulations.

Trunk. Collum 3 mm long, 8 mm wide; dorsal surface (Fig. 3A, B) with microgranulatios; posterolateral margins straight (Fig. 3A, B). Rings 2–19: prozonite and metazonite not glossy (Fig. 3A–D) with dorsal microgranulations on all rings. Lateral margins of ring 2 not projected posteriad (Fig. 3A, B). Anterolateral teeth on paranota of rings 2–4 (Fig. 2G). Gonopodal aperture elliptical, approximately 1.6 mm wide and 0.9 mm long at midpoint. Telson not glossy (Fig. 3D), with microgranulations.

Legs. Not glossy, with microgranulations.

Gonopods. Left gonopod structure as follows: coxa with lateral swelling at midlength (Fig. 4A); acropodite elongated, about four times as long as prefemur; median region expanded, cup-shaped in ventral view, with a concavity and cavity (Fig. 4D); distal region wide, lightly sinuous, bifurcate, ventrally curved at a 70° angle (Fig. 4A, B); VP1 emarginated in posterior region, conspicuous, exceeding the width of ventral region of acropodite in lateral view (Fig. 4A); VP2 absent; LP1 long and wide, projected towards the ventral region of the body (Fig. 4A, B), with aculeate margins, slightly projected towards the distal end of acropodite (Fig. 4E); LP2, LP3 and DP absent. Opening of solenomere located at distal end of acropodite (Fig. 4A, B). Solenomere short and triangular, hemispherical apex, projected towards the coxa.

Remarks. Gonopods of H. callipa and H. bella present similar conformation (Figs 4A, B, 6A–D, 8A, B), but differ in the bifurcate distal region of acropodite of H. callipa (Fig. 4A), LP1 wide (Fig. 4A, B) and posterolateral margins of the first rings not projected posteriad (Fig. 3A, B). On the other hand, in H. bella, the distal region of the acropodite is not bifurcate (Figs 6A–D, 8A, B), LP1 is tapered and the posterolateral margins of the first rings project posteriad (Fig. 5A, B). Also, H. callipa is similar to H. macapa, but the former has LP1 wide and emarginate (Fig. 4E), while the latter has LP1 tapering (Fig. 12A–D). H. callyi sp. nov. and H. mosaica sp. nov. present the acropodite distal region bifurcate (Figs 4A, 23A–D, 37C), but differ from H. callipa by solenomere wider in H. callipa (Fig. 4A, B, E); solenomere narrower in H. callyi sp. nov. and H. mosaica sp. nov. (Figs 23B, 37A, C).

Variations. According to Jeekel (2000), P. callipus (= H. callipa) varies in colour from brownish to greyish or brownish grey, metazonite yellowish brown and legs yellow, antennae and paranota red (here, light brown, Fig. 3A– D). While Peters (1864) and Jeekel (2000) described P. callipus as having a smooth and shiny body, we observed microgranulations and striae throughout the body.

Distribution. Suriname: Saramacca, Paramaribo, Brokopondo (Kabelstation), Paloemen (Jeekel, 2000) (Fig. 50).