Incisus mineirus Lemes, Siewert & O. Mielke, 2024

Lemes, José Ricardo Assmann, Siewert, Ricardo Russo, Mielke, Olaf Hermann Hendrik, Casagrande, Mirna Martins & Warren, Andrew David, 2024, Taxonomic revision of the Neotropical skipper genus Incisus Grishin, 2019 (Lepidoptera, Hesperiidae, Pyrginae), with the description of a new species, Zootaxa 5437 (1), pp. 64-86 : 80-82

Incisus mineirus Lemes, Siewert & O. Mielke , sp. nov.

zoobank.org:act: 6CFF8173-B0AC-4D6A-9851-4EDC2AC71270

( Figs 1 , 3O–R , 4M–P , 5D , 6 )

Diagnosis. Males of I. mineirus sp. nov. ( Fig. 3O–P ) are most similar to I. fasciatus ( Fig. 3E–F ) due to the presence of three hyaline spots in the apical area of the FW and similar wing length. But, as noted in the diagnosis of I. fasciatus , the upper distal margin of the ampulla is concave in I. mineirus ( Fig. 4M–N ), while is rounded in I. fasciatus ( Fig. 4E–F ). For females, the distal third of the ductus bursae is enlarged with a somewhat larger, rounded signum ( Fig. 5D ), very different when compared to the other species ( Fig. 5A–C ).

Description. Male ( Fig. 3O–P ) — FW length: 11 mm to 13 mm. DFW: Presence of three hyaline spots in the apical area. Presence of one hyaline cell spot. HW length: 8 mm to 9 mm. VHW: Presence of cream-white scales most abundant near the marginal area. Genitalia ( Fig. 4M–P ): Uncus tapering to the distal region. Valva longer than wide, with an upper distal concavity in lateral view; sacculus about three times longer than wide, rectangular; harpe very narrow, approximately four times longer than wide, with similar width throughout its extension and making a curve upwards at its distal portion; ampulla with general aspect similar to harpe, darker, bearing small denticles on its distal margin. Aedeagus with a spined cornutus. Female ( Fig. 3Q–R )—Differs from the male as follows: FW length: 13 mm. DFW: Brown with lighter and darker transverse bands, in some individuals the lighter bands are much more evident than on males ( Fig. 3O–P ). HW length: 9 mm. Presence of three small, white spots in the apical area, one hyaline cell spot, two additional spots can be present or absent, one between M 2 -M 3 and the other between M 3 -CuA 1. Genitalia ( Fig. 5D ): Lamella antivaginalis quadrangular in ventral view. Lamella postvaginalis as a semi-rounded plate. Distal third of ductus bursae enlarged, with a somewhat rounded signum.

Hostplants. No record.

Etymology. The epithet mineirus refers to the Brazilian word “mineiro”, which means a person born or inhabiting Minas Gerais (state of Brazil) where the type series was collected. The name is treated as a masculine noun in the genitive case.

Distribution ( Fig. 6 ). Brazil: Minas Gerais.

Temporal distribution. Incisus mineirus sp. nov. has been collected in the following months: April–August.

Type material. Holotype ( Fig. 3O–P ). Male deposited in DZUP with the following labels (labels separated by “/”) : / HOLOTYPUS / HOLOTYPUS — INCISUS MINEIRUS —Lemes, Siewert & Mielke 2022/ Corinto—M[inas]G[erais], 2–15.V.1979, C. Elias leg./ DZ 46.940/.

Allotype ( Fig. 3Q–R ). Female deposited in DZUP with the following labels (labels separated by “/”): / ALLOTYPUS/ ALLOTYPUS— INCISUS MINEIRUS — Lemes, Siewert & Mielke 2022/ 16–30.VI.1979, Corinto—M[inas]G[erais], C. Elias leg/ DZ 46.947/ DNA voucher JRAL-COI-73 José R. A. Lemes /.

Paratypes. BRAZIL. Minas Gerais — Corinto, 16–30.VI.1979, 4♂, 1♀, C. Elias leg., DZ 46.943*, DZ 46.944, DZ 46.945, DZ 46.946, DZ 46.949 ( DZUP) ; 14.VII.1979, 2♀, C. Elias leg., DZ 46.941, DZ 46.942* ( DZUP) ; VII.1979, 1♂, C. Elias leg., DZ 46.948 ( DZUP) ; IV.1980, 1♂, C. Elias leg., DZ 46.950 ( DZUP) . Jaíba, Mocambinho , 28.IV.1998, 1♂, Tangerini leg., Ex Coleção Nirton Tangerini , DZ 46.734* ( DZUP) . São Franciso, 5–10.IV.1982, 1♂, C. Elias leg., DZ 46.963 ( DZUP) ; VIII.1985, 1♂, C. Elias leg., DZ 46.559* ( DZUP) .

Figures

FIGURE 1. Relationships of species of Incisus Grishin, 2019 and other species of Carcharodini based on COI sequences obtained by Maximum likelihood inferred with IQTREE. The blue rectangle represents the genus Incisus. The type species of different genera used in the analysis are bold highlighted. The new species is red highlighted. Support values were considered sufficient when SH-aLRT ≥ 80, aBayes ≥ 0.5 and UFBoot ≥ 95.

FIGURE 3. Species of Incisus in dorsal and ventral views. A–D. I. angulata (Bell, 1937): (A–B) male (Brazil, Minas Gerais, Conceição dos Ouros, OM 83.262), (C–D) female (Brazil, Rio de Janeiro, Resende, Parque Nacional do Itatiaia, DZ 46.281). E–H. I. fasciatus (Hayward, 1933): (E–F) male [neotype of Staphylus ordinarius Hayward, 1933] (Argentina, Salta, Aguas Blancas, DZ 46.164), (G–H) female (Argentina, Jujuy, Calilegua, MGCL 1092134). I–N. Incisus incisus (Mabille, 1878): (I–J) male (Brazil, São Paulo, Campos do Jordão, DZ 46.504), (K–L) female (Brazil, Santa Catarina, São Bento do Sul, Rio Vermelho, DZ 46.454), (M–N) female (Brazil, Paraná, Foz do Iguaçu, Parque Nacional do Iguaçu, DZ 46.495). O–R. I. mineirus sp. nov.: (O–P) male holotype (Brazil, Minas Gerais, Corinto, DZ 46.940), (Q–R) female allotype (Brazil, Minas Gerais, Corinto, DZ 46.947). Scale bar = 1 cm.

FIGURE 4. Male genitalia of Incisus species in lateral, internal, dorsal and ventral views, respectively. A–D. Incisus angulata (Bell, 1937) (Brazil, Minas Gerais, Virgínia, Fazenda dos Campos, DZ 46.339). E–H. Incisus fasciatus (Hayward, 1933) (Brazil, Paraná, Guaíra, Parque Nacional de Sete Quedas, DZ 44.840). I–L. Incisus incisus (Mabille, 1878) (Brazil, Santa Catarina, Joinville, DZ 46.353). M–P. I. mineirus sp. nov. (Brazil, Minas Gerais, São Francisco, DZ 46.559). Scale bar = 500 µm.

FIGURE 5. Female genitalia of Incisus species, in ventral view. A. Incisus angulata (Bell, 1937) (Brazil, Rio de Janeiro, Itatiaia, Parque Nacional do Itatiaia, DZ 42.282). B. Incisus fasciatus (Hayward, 1933) (Argentina, Jujuy, Calilegua, RT. 83— 7.5km W of Rt 34, MGCL 1092134). C. Incisus incisus (Mabille, 1878) (Brazil, Paraná, Fênix, DZ 46.474). D. Incisus mineirus sp. nov. (Brazil, Minas Gerais, Corinto, DZ 46.942). Scale bar = 1 mm.

FIGURE 6. Distribution of Incisus species. The divisions of Brazilian states are represented. Solid circles represent collections studied records and open circles represent literature records of Incisus incisus.