Corynoneura enormis Fu, 2022
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publication ID |
https://dx.doi.org/10.3897/zookeys.1082.73019 |
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publication LSID |
lsid:zoobank.org:pub:A0290B6E-A420-4EB1-B08B-496622662A2C |
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persistent identifier |
https://treatment.plazi.org/id/6D4BD075-EC3F-4BC2-9A53-D86F97A7202D |
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taxon LSID |
lsid:zoobank.org:act:6D4BD075-EC3F-4BC2-9A53-D86F97A7202D |
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treatment provided by |
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scientific name |
Corynoneura enormis Fu |
| status |
sp. nov. |
Corynoneura enormis Fu sp. nov.
Figure 1 View Figure 1
Type material.
Holotype, male (HNU: 17091206HJL), China: Hunan Province, Loudi City, Xinhua County, Xihe Town, Cushi Village, 27°51'45"N, 111°31'51"E, 315 m a. s. l., 29.Ⅶ.2016, sweep net, leg. Jingli Huang.
Etymology.
From Latin, Corynoneura enormis , immense, huge, vast, referring to lateral sternapodeme with a large attachment point.
Diagnosis.
The male imago is characterized by having an antenna with eight flagellomeres, AR 0.51; anterior margin of cibarial pump distinctly concave; hind tibia with hooked spur; superior volsella small rounded and undeveloped; inferior volsella narrow, with dented edge, along the inner margin of gonocoxite; phallapodeme apically curved, placed in lateral position of sternapodeme; sternapodeme curved into a U-shape, and lateral sternapodeme with large caudal attachment point.
Description.
Adult males (N = 1). Total length 0.92 mm. Wing length 0.53 mm. Total length/wing length ratio 1.74. Wing length/profemur length ratio 2.69.
Coloration. Head dark brown; thorax dark brown. Legs yellowish. Abdomen brown.
Head. Antenna with eight flagellomeres, AR 0.51, ultimate flagellomere 115 µm long, with many short apical sensilla chaetica (Fig. 1C View Figure 1 ). Tentorium and cibarial pump as in Figure 1B View Figure 1 , tentorium 110 µm long; 12 µm wide; Anterior margin of cibarial pump strongly concave. Clypeus with four setae.
Thorax. Five dorsocentral setae. Scutellum with two setae. One or two prealar setae.
Wing (Fig. 1A View Figure 1 ). VR 3.0. Cu/wing length ratio 0.54; costa 120 µm long, with five setae; Cu 288 µm long; wing width/wing length ratio 0.45.
Legs. Fore trochanter with dorsal keel. Most of fore- and mid-legs lost. Spurs of hind tibia 25 µm and 10 µm long. Width of hind tibia at apex (a) 29 µm, width of hind tibia 1/3 from apex (d) 18 µm, elongation length (b) 34 µm, length of maximum thickening (c1) 48 µm, total length of thickening (c2) 72 µm; hind tibial ratios: a/d 1.61; b/d 1.89; c1/d 2.61; c2/d 4.00. Hind tibia expanded with comb of 17 setae and S-shaped spur (Fig. 1D View Figure 1 ). Lengths and other proportions of legs given in Table 1 View Table 1 .
Hypopygium (Fig. 1E, F View Figure 1 ). Tergite IX medially incurved. Superior volsella small, with rounded margin, anteromedially fused. Inferior volsella along inner margin of gonocoxite with many glandular setae. Phallapodeme scalpel-like, apical curved, 35 µm long, and joint with sternapodeme placed lateral. Transverse sternapodeme 20 µm wide, inverted U-shaped, with small oral projection, lateral sternapodeme with very large attachment point placed and directed caudally. Gonostylus curved tapering, 29 µm long; megaseta 5 µm long. HR 2.31; HV 3.17.
Remarks.
This species is similar to Corynoneura ascensa Fu & Sæther, 2012 and Corynoneura sesquipedalis Fu & Fang, 2018 by having a large attachment point on the lateral sternapodeme. The new species can be separated from C. ascensa by having antenna with 8 flagellomeres, narrow and undeveloped inferior volsella; and differs from C. sesquipedalis by having a narrow inferior volsella, transverse sternapodeme present and with an oral projection (broad inferior volsella, transverse sternapodeme V-shaped,without transverse part in C. sesquipedalis ). The sequence of 16S rDNA from this species is highly similar to Corynoneura tumula Fu & Fang, 2018, but there are distinct morphological differences between them: in C. enormis the antenna has 8 flagellomeres, AR 0.51; inferior volsella narrow, lateral sternapodeme with large caudal attachment point, while C. tumula has an antenna with 9 flagellomeres, AR 0.46; inferior volsella relatively broad, lateral sternapodeme with small caudal attachment point.
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