Nisitrus vittatus

Ecology This species can be found among shrubs and herbaceous plants (but not grasses) at the forest edge (Fig. 27 A). Similar to N. malaya sp. nov., the adults and nymphs of this species have been observed in Brunei Darussalam to feed on the flower parts of a varieties of native and exotic plant species (Tan et al. 2017).

Sumber: Revision of the cricket genus Nisitrus Saussure (Orthoptera: Gryllidae: Eneopterinae) and descriptions of five new species

Calling song (Kuala Belalong, n = 2 males, 20 echemes; MNHN-SO- 2020 - 2859 to MNHN-SO- 2020 - 2860) (Fig. 25 D – F) At 27.0 ° C, the calling song consists of long homogeneous bouts made of short echemes consisting of triplets of syllables; echeme duration is 32.47 ± 3.79 ms (27.00 – 38.65 ms); echeme period is 55.20 ± 5.90 ms (50.52 – 74.27 ms); downtime between consecutive echemes is 22.73 ± 7.26 ms (14.16 – 41.82 ms). Durations for the first to third syllables of the triplet are as follows: 6.93 ± 1.73 ms (4.57 – 9.95 ms), 7.51 ± 2.03 ms (4.80 – 11.67 ms) and 7.22 ± 2.82 ms (3.24 – 12.44 ms). The call spectrum consists of a series of harmonics with three distinct peaks corresponding to the first three harmonics: first harmonic (fundamental frequency) at 6.86 ± 0.28 kHz (6.46 – 7.15 kHz), is usually the dominant frequency; second harmonic peaking at 14.08 ± 0.39 kHz (13.35 – 14.64 kHz); third harmonic peaking at 19.96 ± 0.35 kHz (19.12 – 20.67 kHz).

Sumber: Revision of the cricket genus Nisitrus Saussure (Orthoptera: Gryllidae: Eneopterinae) and descriptions of five new species

Figs 1, 3, 5 – 6, 7 G, 9 E, 10 I, 11 I, 12 I, 13 G, 14 I, 16 G, 17 P – Q, 23 E – H, 24 D – F, 25 D – F, 26; Tables 1 – 2, 11

Sumber: Revision of the cricket genus Nisitrus Saussure (Orthoptera: Gryllidae: Eneopterinae) and descriptions of five new species

Redescription Size average (Figs 2, 23 E – H), similar to N. malaya sp. nov. but differs by slightly lighter colouration, male genitalia, female copulatory papilla and juvenile colouration. Male GENITALIA (Fig. 16 G). Pseudepiphallus relatively slender, slightly longer than broad, anterior margin straight, posterior margin indented in median area to faintly concave, lateral margins with basal half converge posteriorly, apical half somewhat parallel. Pseudepiphallic lophi slightly longer than wide (at base), sclerotized laterally only and covered with strong short setae; their apex slightly folded dorsally and sub-obtuse; moderately spaced apart from each other. Similar to N. malaya sp. nov. but differs by pseudepiphallus faintly more robust and broad, anterior margin more straight. Rami more straight. Female GENITALIA. Copulatory papilla conical, smaller and stout; apex folded ventrally, elongated, pointed; dorsal face with a sclerotized area; ventro-anterior end with an oblong rim, without truncated lobule (Fig. 17 P – Q). Juvenile (Fig. 24 D – F) Characterised by pale white or yellow colouration with numerous dark stripes all around body. Dorsum of head with three transverse black stripes that extends to gena. Eyes with numerous dark stripes. Fastigium with margin black; antennal black with pale rings; frons with a few black spots; palpal segments white with apices black. Pronotum with three thick, dark longitudinal stripes on dorsal disk, one very thick velvety black stripe between dorsal disk and lateral lobe; another curved stripe on lateral lobe ventral of the thick stripe; these stripes not reaching margins. Fore and middle legs with longitudinal dark stripes, two on each face, usually one dorsal and one ventral. FIII with longitudinal dark stripes, two dorsally, and two ventrally. Thoracic (excluding pronotum) and abdominal tergites typically dark or greyish, anterior margin dark, their posterior margin whitish forming a homogeneous light / dark striped pattern. Cerci whitish with a black stripe. Measurements See Table 11.

Sumber: Revision of the cricket genus Nisitrus Saussure (Orthoptera: Gryllidae: Eneopterinae) and descriptions of five new species

(Grylloidea, Gryllidae, Eneopterinae)

Sumber: Uncovering the Grylloidea and Tettigonioidea (Orthoptera: Ensifera) in the Forest Research Center (Sepilok) Entomological Collection

Ecology Found in syntopy with Nisitrus danum in some places in Sabah (Fig. 4 B).

Sumber: Notes on the Eneopterinae (Orthoptera, Grylloidea, Gryllidae) from eastern Sabah