Trichillum hirsutum Boucomont 1928

Trichillum hirsutum Boucomont

(Figs. 3–4)

Trichillum hirsutum Boucomont, 1928: 187

Trichillum boucomonti Saylor, 1935: 208, syn. nov.

Trichillum hirsutum Boucomont:

HOLOTYPE: Ψ, on a triangular card, in MNHN. Labels: [1.] Brésil Sao Paulo / [2.] Ex Museo N. VAN DE POLL / [3. red label] TYPUS / [4. Boucomont handwritten] Trichillum hirsutum n. sp. / [5.] Muséum Paris Boucomont / [6. red label] HOLOTYPE Trichillum hirsutum BOUC. HOLOTYPE.

Trichillum boucomonti Saylor:

HOLOTYPE: Ψ, on a triangular card, in USNM. Labels: [1.] Horqueta Paraguay / [2. red label] HOLOTYPE Trichillum boucomonti L.W. Saylor / [3.] TYPE No. 54102 USNM / [4.] TYPE Trichillum boucomonti Saylor / [5.] = Trichillum hirsutum Boucomont compared w. TYPE Vaz­de­Mello det. 200 0. Examined.

Diagnosis: 3.2–4.0 mm. Externally similar to T. hystrix. However, differing in the shape of the posterior border of the eye (Fig. 3), the shape of the larger sclerite of the internal sac (with two dentiform projections instead of one in T. hystrix), and the apicoventral portion of the phallobase that bear a broad triangular tubercle that is divided medially.

Remarks: Both holotypes are females. Nevertheless, we feel confident in making this synonymy because all evidence based on the available morphological characteristic support it. Primary type specimens differ in size (T. boucomonti is smaller) and in the shape of tibial teeth (abraded in T. hirsutum), but all other characters coincide. These differences are variable amongst a large series of examined material of this species, from a wide distribution range that includes both type localities. Male genitalia (parameres and internal sac) of several specimens have also been compared and no differences were observed.