Ankylopteryx yangi
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Ordo: Neuroptera
Familia: Chrysopidae
Genus: Ankylopteryx
Name
Ankylopteryx yangi Ma & Yang & Liu, 2020 sp. nov. – Wikispecies link – ZooBank link – Pensoft Profile
Material examined
Holotype ♂, China, Guizhou, Libo, Maolan, Limingguan, 2013.X.14, Liu Xingyue (CAU). Paratypes 1 ♀, China, Guizhou, Libo, Maolan Limingguan, 2013.X.14, Liang Feiyang (CAU); 1 ♀, Taiwan, Pingtung, Lilungshan, 2013.VI.18, Liang Feiyang (CAU).
Diagnosis
Frons with three brownish small spots between antennae, and anteriorly with two arcuate markings, which are more or less connected with each other at posterior ends; gena with long brownish stripe; clypeal markings contiguous with frontal markings posteriorly and labial markings anteriorly; maxillary palp and labial palp pale green. Thorax with mesonotum entirely brown; protibia and mesotibia with median markings. Forewing with intramedian cell short and wide. Abdomen with brownish markings on terga 2–8.
Description
Measurements: Head width 0.7–1.0 mm; ratio of head width/eye width 1.72–1.74; prothorax 0.7–0.9 mm long and 0.85–1.0 mm wide. Forewing 11.5–13.9 mm long, 5.0–6.0 mm wide; length of first intramedian cell 0.98 mm; 12 radial cells; 4–5 Banksian cells (b cells), 4–5 lower Banksian cells (b' cells); 7–8 inner gradates, 7–10 outer gradates. Hind wing 10.0–13.5 mm long, 3.2–4.0 mm wide; 11 radial cells; 4–6 Banksian cells (b cell), 5–6 lower Banksian cell (b' cells); 4–6 inner gradates, 5–7 outer gradates.
Male. Head with vertex creamy yellow, immaculate; frons creamy yellow, with three small spots between antennae, brownish stripes below toruli, and a pair of median arcuate markings anteriorly, more or less connected with each other posteriorly; gena with long brownish stripe extending along inner ocular margin to posterolateral part of clypeus; tentorial pits with brownish margins; scape with brownish stripe; clypeus with brownish arcuate markings contiguous with frontal markings anteriorly and labial markings posteriorly; maxillary palp and labial palp pale green.
Prothorax almost pale green, with wide, brownish lateral stripe, and with white long setae. Mesothorax entirely brown dorsally, with sparse white long setae. Metathorax pale green, with sparse white long setae. Legs pale green, tarsomere 5 and pretarsal claws dark brown; protibia with a brownish median marking; mesotibia with a smaller median brownish marking.
Forewing broad, slightly tapering apically, hyaline; pterostigma brownish, extending over four crossveins; setae almost whitish; veins mostly pale green; costal crossveins at junctions with wing margin, radial crossveins at junctions with R and dcc brown; Radical sector (Rs) sinuated; transverse veins pale green; gradate series of crossveins almost brown; dcc closed. Hind wing narrow, more acutely tapering apically than forewing, hyaline; pterostigma faint, extending over three crossveins; transverse veins pale green; gradate series of crossveins almost brown.
Abdomen pale green, with brownish markings on terga 2–8, and tergal markings slightly wider than that on anteriorly neighbouring terga. Abdominal setae white, microsetae dense, and long setae sparse.
T9+ectoproct about half as long as tergum 8, with dorsal invagination shallow; ectoproct with rounded dorsal and posterior margins; callus cerci rounded, trichobothria densely ranged. S8+9 fused, as long as wide, with line of fusion not demarcated; lateral margin almost straight, posterior margin rounded. Only gonarcus, entoprocessus, and pseudopenis present. Gonarcus broadened at apex of lateral arms. Gonarcus with the general width normally broad; entoprocessus attached at about basal fourth of gonarcus, about half as long as gonarcus, medially fused forming an arch over pseudopenis; pseudopenis about twice as long as entoprocessus, broadened subapically, long and distinctly curved, and pointed apically; gonosaccus with sparse setae.
Female. External characters same as male. Sternum 7 distinctly convex posteromedially, setose posteriorly. Subgenitale and spermatheca with spermaduct present; subgenitale bilobed apically; spermatheca round, as wide as long; spermaduct coiled, much longer than spermatheca.
Distribution
China (Guizhou, Taiwan).
Etymology
This new species is dedicated to Professor Yang Chikun, who made tremendous contributions to the taxonomy of Chrysopidae from China.
Remarks
This new species appears to be closely related to A. octopunctata candida in having similar frontal markings, but it differs from the latter species by the presence of median arcuate frontal markings (absent in A. octopunctata candida), the ratio of gonarcus/entoprocessus (2.0 in A. yangi versus 1.0 in A. octopunctata candida), and the distinctly curved pseudopenis (moderately curved in A. octopunctata candida).
Key to Chinese species of Ankylopteryx (s. str.) (revised after Yang et al. 2005)1Original Description
- Ma, Y; Yang, X; Liu, X; 2020: Notes on the green lacewing subgenus Ankylopteryx Brauer, 1864 (s. str.) (Neuroptera, Chrysopidae) from China, with description of a new species ZooKeys, 906: 41-71. doi
Images
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Other References
- ↑ Yang X, Yang C, Li W (2005) Fauna Sinica: Insecta, Volume 39: Neuroptera: Chrysopidae.Science Press, Beijing, 398 pp. [+ 4 pls; In Chinese, with English summary]
