Oecanthus lineolatus Saussure

Zefa, Edison, Neutzling, Alexandre Schneid, Redü, Darlan Rutz, Oliveira, Gabriel Lobregat De & Martins, Luciano De Pinho, 2012, A new species of Oecanthus and Oecanthus lineolatus Saussure, 1897 from Southern Brazil: species description, including phallic sclerites, metanotal glands and calling song (Orthoptera: Gryllidae: Oecanthinae), Zootaxa 3360, pp. 53-67: 56-58

publication ID

http://doi.org/ 10.5281/zenodo.209856

DOI

http://doi.org/10.5281/zenodo.5661256

persistent identifier

http://treatment.plazi.org/id/C564AF41-FFEC-3B48-FF07-3D506240F815

treatment provided by

Plazi

scientific name

Oecanthus lineolatus Saussure
status

 

Oecanthus lineolatus Saussure  

Oecanthus lineolatus Saussure, 1897: 254   . Type locality: Brazil, Rio Grande do Sul. A male labeled as syntype in Muséum d'histoire naturelle de Genève.

Male ( Fig. 3 View FIGURES 3 – 4 ). Differs from O. pallidus   n. sp. by body color, being slightly darker as pale-green, pale-green head with yellow eyes ( Fig. 6, 8 View FIGURES 5 – 8 ); femur III translucent/pale-green variegated ( Fig. 10 View FIGURES 9 – 14 ); file teeth number 47 ± 2.2 (42–51, n = 18); hindwings non caudate; metanotal gland scutum with two pairs of bristles Fig. 16 View FIGURES 15 – 16 , tb; posterior median lobe of scutum as Fig. 16 View FIGURES 15 – 16 , pml; no bristles on scutum and scutellun at scutoscutellar suture ( Fig. 16 View FIGURES 15 – 16 , ss); scutellun as Fig. 16 View FIGURES 15 – 16 , St; supra-anal and subgenital plates as Fig. 17, 19 View FIGURES 17 – 20 , respectively; main lobe of pseudepiphallus lenticularshaped, projecting posteriorly ( Fig. 27 View FIGURES 26 – 30 ).

Male body measurements (in mm, n = 32). Body length 12.4 ± 1.3 (10.4–15.1); head width: 1.7 ± 0.05 (1.6–1.8); inter ocelli width: 0.7 ± 0.1 (0.5–0.8); pronotum length 2.2 ± 0.1 (2.02–2.5); pronotum width: 2 ± 0.1 (1.8–2.2); hind femur length: 7.8 ± 0.3 (7.4–8.4); hind tibia length– 8.3 ± 0.3 (7.7–8.9); tegmen length 12.1 ± 0.3 (11.4–12.6, n = 15). Male phallic sclerites ( Fig. 21–25 View FIGURES 21 – 25 ; 27–30). Similar to O. pallidus   n. sp., differing in main body of pseudepiphallus.

Calling song ( Fig. 32, 34 View FIGURES 31 – 36 ). 20.ii.2011, 21h; 16 °C; field recorded; dominant frequency 2570 Hz; chirp duration 0.88 s; chirp period 2.91 s; pulses per chirp 34; pulse rate 39; chirp rate 20.4. Individuals data, and relationship between frequency/pulse-rate and pulse-rate/temperature showed in Tab. 1 View TABLE 1 , Figs. 35–36 View FIGURES 31 – 36 , respectively.

Note: calling song of O. lineolatus   and O. pallidus   n. sp. showed intraspecific and individual variation in the chirp structure, including amplitude differences in the first pulse and/or failures along the chirp; some were highlighted in Figs. 33 View FIGURES 31 – 36 , a, b, c; 34, a, b, c).

Female ( Fig. 4 View FIGURES 3 – 4 ). Similar in color to male, slightly larger in size; ovipositor rather robust, tipped with black ( Fig. 38 View FIGURES 37 – 42 ); subgenital and supra-anal plates as Fig. 41–42 View FIGURES 37 – 42 , respectively; body measurements (in mm, n = 10): body length 11.9 ± 1.2 (10.1–13.3); head width 1.7 ± 0.1 (1.5–1.8); inter ocelli width 0.7 ± 0.04 (0.6–0.8); pronotum length 2.1 ± 0.1 (1.9–2.2); pronotum width 1.8 ± 0.1 (1.6–2.1); hind femur length 7.7 ± 0.2 (7.4–8.2); hind tibia length 8.4 ± 0.3 (7.7–8.9); ovipositor length 5 ± 0.2 (4.7–5.2).

Specimens examined. 36 males and 10 females, municipality of São Lourenço do Sul, district of São João da Reserva, State of Rio Grande do Sul, Southern Brazil 31 º 17 ’ 39.43 ’’S, 52 º09’02.76’’W, 13 /ii/ 2011. A.S. Neutzling leg.

Voucher specimes. 26 males and five females will be kept at collection of the Departamento de Zoologia e Genética, Instituto de Biologia, Universidade Federal de Pelotas (UFPel) and, 10 males and five females at Museu de Zoologia da Universidade de São Paulo ( MZUSP).

Habitat and behavior of O. pallidus   n. sp. and O. lineolatus   . Both species were found in the boundary between tobacco plantation and native shrubs ( Fig. 43 View FIGURES 43 – 46 ), preferably dwelling plants of tobacco ( Nicotiana tabacum   ) and erva-lanceta ( Solidago chilensis   ); hiding immobile during day among the tobacco sprouting leaves and S. chilensis   abaxial leaf surface; they were active at night, performing an omnivorous diet, including tobacco leaves, aphids and pollen, latter sometimes was accessed by chewing a hole in the corolla settled at anther position ( Fig. 44 View FIGURES 43 – 46 ); they also showed preference for inflorescence, fruits, as well as aphids from leaves of S. chilensis   ; males began their calling song at dusk, peaking between 21 h to 1 h, and reducing activity towards at dawn; preferentially folded tobacco leaves were used as calling song perch ( Fig. 45 View FIGURES 43 – 46 ); males also clewed an oval-shaped hole in the center of leaf setting the forewings against its edges to stridulate ( Fig. 46 View FIGURES 43 – 46 ); other species of trees and shrubs were also used as perch to stridulate.

MZUSP

Museu de Zoologia da Universidade de Sao Paulo

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Orthoptera

Family

Haglotettigoniidae

Genus

Oecanthus

Loc

Oecanthus lineolatus Saussure

Zefa, Edison, Neutzling, Alexandre Schneid, Redü, Darlan Rutz, Oliveira, Gabriel Lobregat De & Martins, Luciano De Pinho 2012
2012
Loc

Oecanthus lineolatus

Saussure 1897: 254
1897