Trichillum heydeni Harold

(Figs. 1–2)

Trichillum heydeni Harold, 1868: 53 .

Trichillum (Trichillum) pereirai Martínez, 1968: 133, syn. nov.

Trichillum heydeni Harold:

LECTOTYPE here designated: ɗ, pinned, MNHN. Labels: [1. Harold handwritten] Heydeni T. Harold / [2.] Ex. Museo E. Harold / [3. green label] Muséum Paris ex. coll. R.

Oberthür 1952 / [4. red label] LECTOTYPE / [5.] Trichillum heydeni Harold LECTOTYPE Vaz­de­Mello det. 2000. Lectotype is designated in order to warrant the application of the name to a single species in the case that more specimens of the original series could represent other species.

PARALECTOTYPES: ɗ, pinned, MNHU. Labels: [1.] 26487 / [2. green] Brasil v. Olf. nr. 26487 / [3. green] Heydeni Harold / [4.] Zool Mus Berlin / [4. yellow label] PARALECTOTYPE / [5.] Trichillum heydeni Harold PARALECTOTYPE Vaz­de­Mello de s. 2001; Ψ, pinned, MNHU, same data but without third label.

Trichillum pereirai Martínez:

HOLOTYPE ɗ and ALLOTYPE Ψ, in BRBA, examined.

HOLOTYPE: ɗ, on a rectangular card, with aedeagus attached to a triangular card. Labels: [1., Martínez handwritten] BRASIL, Eo. Sao Paulo, Sao Paulo, Aclimação, Coll. Martínez, Dic. 962 / [2. orange label] HOLOTYPUS / [3. red label, Martínez handwritten] Trichillum heydeni n. sp. ɗ, A. MARTÍNEZ DET 19 67

ALLOTYPE: Ψ on a triangular card. Labels: [1.] Vicosa, MinasGeraes, Brazil 1931 / [2.] Van Dyke, Collection / [3.] Mrs. Y. Mexia, Collector / [4. orange label] ALLOTYPUS / [5. red label, Martínez handwritten] Trichillum heydeni n. sp. Ψ, A. MARTÍNEZ DET 19 67

Diagnosis: Differs from the other species of the genus by its large size (3.9–5.0 mm), combined with the characteristic head punctation (Fig. 1) and the unique externally dentate parameres (Fig. 2).

Remarks: In the original description, Harold (1868) does not specify the number of examined specimens. The designated lectotype and the two paralectotypes are the only specimens known to have been seen by Harold at the time of the description. The species diagnosed and figured by Martínez (1968) as T. heydeni is described below as T. tishechkini sp. nov., because it is actually a different species. Martínez (1968) apparently described T. pereirai after misidentifying T. heydeni and therefore not realizing that they were the same species.