Helionothrips pallidus, Xie & Li & Zhang, 2022
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publication ID |
https://doi.org/ 10.11646/zootaxa.5194.3.3 |
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publication LSID |
lsid:zoobank.org:pub:0060E81D-39DF-4B95-BA5A-8315B80A33CF |
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DOI |
https://doi.org/10.5281/zenodo.7154428 |
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persistent identifier |
https://treatment.plazi.org/id/F40287F8-6240-FFAA-63EF-DFE0296D7842 |
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treatment provided by |
Plazi |
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scientific name |
Helionothrips pallidus |
| status |
sp. nov. |
Helionothrips pallidus sp.n.
( Figs 8 View FIGURES 1–9 , 13 View FIGURES 10–19 , 20 View FIGURES 20–24 , 31–37 View FIGURES 31–42 )
Female macroptera. Body color dark brown ( Fig. 31 View FIGURES 31–42 ), head uniformly dark brown ( Fig. 35 View FIGURES 31–42 ); fore legs yellow with a slight brown tint; mid and hind femora dark brown, tibiae dark brown with extreme base and apical third yellow; all tarsi yellow; antennal segments I–II and VI–VII brown, III–V yellow, VIII light brown ( Fig. 13 View FIGURES 10–19 ); fore wing ( Fig. 8 View FIGURES 1–9 ) dark brown at base, with a sub-basal white band and apical half pale, but brown at anterior and posterior margins of distal area, extreme apex brown; clavus dark brown.
Head about 1.4–1.5 times as wide as long, with many wrinkles in polygonal reticles ( Fig. 35 View FIGURES 31–42 ); occipital collar arched medially, sculptured completely and posteromedian reticles with internal dots.Antennae 8-segmented, forked sense cones on segments III & IV long and curve, on III reaching to the midpoint of IV, on IV extending to the basal fourth of VI ( Fig. 13 View FIGURES 10–19 ), simple dorsal sense cone on VI beyond apex of VIII, microtrichia present on segments IV–VI. Mouth cone rounded and moderately long, maxillary palps 2–segmented.
Pronotum entirely reticulate and with numerous internal wrinkles throughout ( Fig. 20 View FIGURES 20–24 ); reticles of the anterior third, also posterolaterally, larger than those of the rest; discal setae long and slender. Mesoscutal median reticles and metascutal triangle reticles with weak internal wrinkles ( Fig. 33 View FIGURES 31–42 ); metascutum median setae wide apart and far from anterior margin, campaniform sensilla (CPS) and median setae almost being in a transverse line; metascutellum entirely reticulate, about 2.3 times as wide as long. Fore wing with distinct veinal setae ( Fig. 8 View FIGURES 1–9 ), first vein with 6–7 basal and 2 distal setae, second vein with 5–6 setae, posteromarginal cilia wavy; clavus with 4 veinal setae. Tarsi 1–segmented.
Abdominal tergites completely reticulate except for the posterior submedian smooth part, laterally reticles on tergites II–VII with distinct internal wrinkles; antecostal line of tergites III–VIII heavy and divided into a series of arches connected by a fine line; tergite VIII with posterior margin comb interrupted medially by lacking about 6 microtrichial teeth ( Fig. 37 View FIGURES 31–42 ); tergite IX with 3 pairs of needle-like marginal setae, S1 and S2 subequal in length, slightly longer than S3 ( Fig. 37 View FIGURES 31–42 ); tergite X with a complete dorsal longitudinal split. Sternites entirely sculptured with reticles longitudinally elongate posterior of antecostal line, three pairs of long and slender setae situated in front of posterior margin.
Measurements (holotype female in microns): Body length 1410. Head, length 103; width across genae 157. Eye, length 66; width 48. Pronotum, length 139; width 188. Fore wing length 940. Abdominal segments VIII–X median length 89, 103, 61. Antennal segments I–VIII length (width): 24(22), 34(29), 55(20), 45(22), 38(19), 26(18), 9(8), 35(4).
Male macroptera. Similar to female but smaller, abdomen more slender ( Fig. 32 View FIGURES 31–42 ).Abdominal tergite IX with two pairs of thorn-like setae, the posterior pair slender and closer to each other than anterior pair ( Fig. 36 View FIGURES 31–42 ); posteromedian of these setae with five wart-like tubercles; sternites VI–VIII each with a circular pore plate ( Fig. 34 View FIGURES 31–42 ).
Measurements (paratype male, in microns). Body length 1395. Head, length 100; width across genae 143. Eye, length 63; width 42. Pronotum, length 136; width 178. Fore wing length 912. Antennal segments I–VIII length (width): 22(21), 33(28), 51(20), 43(21), 38(19), 25(18), 8(7), 32(4). Anterior pair of thorn-like setae on tergite IX length 33. Pore plate on sternites VI–VIII diameter 20, 21, 22.
Specimens studied. Holotype female, CHINA, Yunnan Province, Pingbian County, Dawei Mountain Nature Reserve, from leaves of ferns- Drynaria roosii , 4.v.2017 (Kong Bo), in collection of Yunnan Agricultural University , Kunming.
Paratypes: Yunnan Province, 6 females, 2 males taken from same locality and plant as holotype; Wuding County, Lion Mountain, 4 males from grass, 25.x.2016 (Li Yajin), 1 female and 1 male from Stellaria saxatilis , 8.xii.2017 (Li Yajin); Kunming City , 1 female from Stellaria saxatilis , 29.v.2017 (Li Yajin) . Guizhou Province, Hezhang County, Yelang National Forest Park, 6 females, 4 males from Oplismenus compositus , and 2 females, 1 male from ferns, 13.viii.2016 (Yan Xueqiang) .
Deposited in Australian National Insect Collection , Canberra : Wuding County, Lion Mountain , 1 female from grass, 25.x.2016 (Li Yajin); Kunming City , 1 female from Stellaria saxatilis , 29.v.2017 (Li Yajin); Yushe National Forest Park , 1 male from Cyclosorus parasiticus , 12.ix.2017 (Li Yajin) .
Etymology. Latin epithet “ pallidus ” meaning pale, refers to the fore wing colour.
Comments. Body sculpture of this new species resembles that of cephalicus and rugatus with the pronotum entirely covered with reticles having numerous wrinkles, also head, meso- and metascutum reticulate with internal wrinkles. However, it can be distinguished easily by the uniformly dark brown of antennal segment VI ( Fig. 13 View FIGURES 10–19 ), versus the light brown and basal half yellow in cephalicus and rugatus ( Figs 12, 15 View FIGURES 10–19 ); also, the length ratio of female abdominal segment IX and X is about 1.7 in pallidus sp. n., but 2.1–2.4 in cephalicus , and 2.5–2.8 in rugatus . Fore wing color pattern of this new species is similar to that of parvus and errans with the apical half almost pale (apex brown), but parvus and errans both are without internal wrinkles in head and thorax reticles. Moreover, males of pallidus sp. n. have a distinct pore plate present on abdominal sternites VI–VIII ( Fig. 34 View FIGURES 31–42 ), but in parvus and errans , these are only on sternites VII–VIII.
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.