Mirigryllus nigrus He, 2020
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publication ID |
https://doi.org/ 10.11646/zootaxa.4869.1.5 |
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publication LSID |
lsid:zoobank.org:pub:0EA4F9BF-8890-4440-B37C-18EC6AD94C13 |
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DOI |
https://doi.org/10.5281/zenodo.4443692 |
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persistent identifier |
https://treatment.plazi.org/id/03E92F47-FFD3-FFA7-2FBC-FAD4EC1664C2 |
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treatment provided by |
Plazi |
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scientific name |
Mirigryllus nigrus He |
| status |
sp. nov. |
Mirigryllus nigrus He View in CoL sp. nov.
Holotype: 1 male, CHINA, Zhejiang, Lin’an, Qingliangfeng Mt. (N 30°06'39" E 118°54'01"), alt. 920m, 12-v-2018, coll. HE Zhu-Qing. GoogleMaps
Paratypes: 3 males and 5 females, same data as holotype GoogleMaps .
Description. Male. Body medium size with pubescence. Head: frontal rostrum 2 times as wide as the 1st antennal joint ( Fig. 3C, D View FIGURE 3 ), vertex obviously flat, median ocellus flat, smaller than lateral ocelli and located lower than lateral ocelli ( Fig. 3C View FIGURE 3 ), maxillary palpi with 3rd–5th joints long and 5th slightly widened ( Fig. 3C View FIGURE 3 ); thorax: pubescent, disc of pronotum as wide as head ( Fig. 3A View FIGURE 3 ), anterior and posterior margin almost straight, rounded borders between disc and lateral lobes, tympanum on outside long and big, but very small on inner side, forewing not longer than 2 times of pronotum, 2 oblique veins curved, without crossvein between chord and mirror, mirror longitudinal elongated with 2 curved dividing vein, apical field short ( Fig. 3A View FIGURE 3 ). Legs strong, hind femur little longer than hind tibiae, 5 pairs of dorsal spines alternated on hind tibiae, 5 pairs of spines on basitarsomere ( Fig. 3E View FIGURE 3 ), epiproct triangle with apical part in arc-shape ( Fig. 3F View FIGURE 3 ). Genitalia: epiphallus transverse with posterior epiphallic lobes long and thin, without a medial lobe at posterior, ectoparameron transparent with basal part wide, as long as posterior epiphallic lobes ( Fig. 3H, I, J View FIGURE 3 ).
Female. Similar to male including epiproct, veins on dorsal field of forewing not parallel, more or less crossed ( Fig. 3B View FIGURE 3 ), ovipositor straight, without teeth on apical side ( Fig. 3G View FIGURE 3 ).
Coloration. Nearly black. One white transverse bar connecting lateral ocelli, but separated with median ocellus, maxillary palpi white, two vertical yellow line on occiput, indistinct yellow stripes behind eyes, tarsi and spurs brown ( Fig. 2 View FIGURE 2 G–J).
Variation. Macropterous form individuals appeared occasionally in lab cultures. Hindwing is two times as long as forewing ( Fig. 2G, H View FIGURE 2 ).
Nymph. Hatchling: Head brown, body yellow and legs pale ( Fig. 2A View FIGURE 2 ). Junior instar: Brown to black. Band between lateral ocelli appeared ( Fig. 2B View FIGURE 2 ). Penultimate instar: Total black. Length of ovipositor in dorsal view as long as one abdominal segment ( Fig. 2C, D View FIGURE 2 ). Ultimate instar: Total black. Length of ovipositor in dorsal view as long as 2–3 abdominal segments ( Fig. 2E, F View FIGURE 2 ).
Etymology. Species name nigrus means its black body color.
Measurements (in mm). Male: body length 13.62–14.08, pronotum length 2.60–2.81, hind femur length 8.63–9.16, hind tibiae length 6.46–6.63, forewing length 4.66–4.90.
Female: body length 14.20–15.53, pronotum length 2.81–3.01, hind femur length 8.55–9.19, hind tibiae length 6.20–6.51, forewing length 4.77–6.99, ovipositor length 6.97–7.55.
Songs. The calling song was about 8.63 cycle/min. Each cycle contained 12–16 pulses in 0.165± 0.013s from weak to strong ( Fig. 4 View FIGURE 4 ).
Life cycle. As we found many hatchlings in August, combined the adult appearance date, we infer that this species is univoltine with adult appeared from May to July and nymphs overwinter.
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.
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