Machima itatiaia Antunes & Takiya,

Antunes, André Fonseca & Takiya, Daniela Maeda, 2020, Machima itatiaia sp. nov.: a new species of lichen-mimic katydid (Orthoptera Tettigoniidae: Phaneropterinae) from the Brazilian Atlantic Forest, Zootaxa 4878 (3), pp. 589-594: 590-592

publication ID

https://doi.org/10.11646/zootaxa.4878.3.10

publication LSID

lsid:zoobank.org:pub:A457B12A-AA2E-405C-AAF8-576E7BD4AFB0

DOI

http://doi.org/10.5281/zenodo.4426085

persistent identifier

http://treatment.plazi.org/id/03A8F305-FFED-D27D-FF55-F8BBFEF9FC64

treatment provided by

Plazi

scientific name

Machima itatiaia Antunes & Takiya
status

sp. nov.

Machima itatiaia Antunes & Takiya  sp. nov.

( Figs. 1–2View FIGURE 1View FIGURE 2)

Diagnosis. Main lobe of male cercus strongly curved after 2/3 of length and abruptly narrowed preapically ( Fig. 2CView FIGURE 2); accessory lobe of cercus of directed dorsally and with rounded apex ( Fig. 2CView FIGURE 2).

Description. Head. Head ( Figs. 1C, DView FIGURE 1) weakly conical in frontal view; fastigium ( Fig. 1DView FIGURE 1) as long as escape and pedicel length combined. Thorax. Pronotum ( Figs. 1B, CView FIGURE 1) smooth with posterior margin weakly projected and lateral margins very pronounced; prosternum unarmed. Wings. Wings ( Fig. 1AView FIGURE 1) developed, hind wing surpassing tegmen; stridulatory files of left and right tegmina ( Figs. 2A, BView FIGURE 2) with 46 and 37 teeth, respectively. Legs. Legs ( Fig. 1AView FIGURE 1) armed; foreleg femur with anterior genicular lobe with elongate spine, posterior genicular lobe with short spine, and ventral margin with two spines, tibia with four ventral spines and a single dorsal near tympanum; tympanum covered by cuticle; midleg ( Fig. 1AView FIGURE 1) with femur with anterior genicular lobe with elongate spine, posterior genicular lobe with short spine, and ventral margin with two spines, tibia with four small spines, being two ventral smaller near apical portion and two larger near proximal portion; hindleg ( Fig. 1AView FIGURE 1) with femur with five pairs of ventral spines weakly curved and two apical spines, tibia with seven pairs of spines weakly curved. Male abdomen. Cercus ( Figs. 2C, DView FIGURE 2) developed, main lobe expanded at basal two-thirds; in dorsal view, with distinct accessory lobe in between basal and medial third directed dorsally with rounded apex; apical third abruptly narrowed and acute, directed inwardly; in lateral view, apex hook-shaped; subgenital plate ( Fig. 2EView FIGURE 2) with broad base, posterior margin with V-shaped emargination and two developed styles.

Coloration. Head ( Figs. 1View FIGURE 1 A–D) mostly light green. Pronotum ( Figs. 1View FIGURE 1 A–C) light green with black lines. Tegmen ( Fig. 1AView FIGURE 1) green with small black spots. Hind wing ( Fig. 1AView FIGURE 1) transparent with apex similar to tegmen. Legs ( Fig. 1AView FIGURE 1) green with mostly black thorns. Cercus ( Figs. 2C, DView FIGURE 2) and subgenital plate ( Fig. 2EView FIGURE 2) brownish-yellow with apical parts black and brownish-yellow.

Measurements (mm). Nine males (holotype): Total length 22–24 (22); Pronotum length: 6–6 (6); Tegmen: 34–37 (34); Foreleg: 17–19 (19); Hind leg: 54–61 (60).

Taxonomic notes. As mentioned by Rehn (1950), specific diagnostic characteristics among Machima  species are found only in the male genitalia. Machima itatiaia  sp. nov. stands out from all other species in the curvature of the main lobe of cercus. However, it seems to be more similar to M. scalprum  in the shape of the apex of the accessory lobe.

Unfortunately, no females are known for this species. The most recent specimens studied were collected attract-ed to lights between 2012 and 2018, and collecting efforts since then included several trips to the same place where these specimens were collected, especially during 2018 and 2019, but no additional specimens were collected.

Etymology. The species epithet is a reference to the type-locality, Parque Nacional do Itatiaia in Southeastern Brazil. It is treated as a noun in apposition.

Material examined. Holotype: ♂, Brasil, RJ, Itatiaia , Parque Nacional de Itatiaia , Casa do Pesquisador, Light, 7.XII.2018, Antunes, A, Ferreira, A.L.D. & Silva, V.C.L. leg. ( MNRJ)  . Paratypes: ♂, Brasil, RJ, Itatiaia , Parque Nacional de Itatiaia, Quiosque do Poço Azul, 22° 27’ 07” S 44° 36’ 45” W, Light, 17–18.XI.2012, Takiya, D.M. & Santos, A.P.M. leg. ( MNRJ)GoogleMaps  ; ♂, Brasil, RJ, Itatiaia , Parque Nacional de Itatiaia, Quiosque do Poço Azul, 22° 27’ 07” S 44° 36’ 45” W, Light, 18.XI.2012, Takiya, D.M. & Santos, A.P.M. leg. ( MNRJ)GoogleMaps  ; ♂, Parque Nacional de Itatiaia , Casa do Pesquisador, 22° 27’ 15.2” S 44° 36’ 35” W, Light, 17–18.XI.2012, Takiya, D.M. & Santos, A.P.M. leg. ( DZRJ ORT0010)GoogleMaps  ; ♂, Itatiaia , Estrada do Rio, 1300 m, 10–12.X.1950, Travassos, Albuquerque & Pearson leg. ( CEIOC)  ; ♂, Itatiaia , Estrada do Rio, 1300m, 10–12.X.1950, Travassos, Albuquerque & Pearson leg. ( CEIOC)  ; ♂, Itatiaia , 12.XI.1993, W. Macchon Silva leg. ( CEIOC)  ; ♂, Itatiaia , Estrada do Rio, 1300 m, 10–12.X.1950, Travassos, Albuquerque & Pearson leg. ( CEIOC)  ; ♂, Itatiaia , Estrada do Rio, 15.XI.1935, J.F. Zikán leg. ( CEIOC)  . Additional material: ♂, Itatiaia, XI /78, Dimitri leg. ( MNRJ)  ; ♂, Itatiaia , Estrada do Rio, 830m, 1.X.1954, Leonor Zikán leg. ( MNRJ)  .

MNRJ

Museu Nacional/Universidade Federal de Rio de Janeiro