Cenocorixa yuanjiangensis, Xie & Liu, 2021

Xie, Tong-Yin & Liu, Guo-Qing, 2021, A new species of the genus Cenocorixa (Hemiptera, Heteroptera, Corixidae) from China, ZooKeys 1055, pp. 89-94 : 89

publication ID	https://dx.doi.org/10.3897/zookeys.1055.63567
publication LSID	lsid:zoobank.org:pub:991016A4-3D48-4201-955D-194A28024F91
persistent identifier	https://treatment.plazi.org/id/88B196AD-A8AA-4000-AE62-9F5B58BC8345
taxon LSID	lsid:zoobank.org:act:88B196AD-A8AA-4000-AE62-9F5B58BC8345
treatment provided by	ZooKeys by Pensoft
scientific name	Cenocorixa yuanjiangensis
status	sp. nov.

Treatment

Cenocorixa yuanjiangensis sp. nov.

Figures 1 View Figure 1 , 2 View Figure 2

Type material.

Holotype ♂, China: Yuanjiang Wangxiangtai Nature Reserve [元江望乡台保护区], 23.38°N, 101.92°E, Yunnan Province, alt. 2020 m, 19.VII.2006, Ming LI leg. Paratypes: same date as holotype, 3♂ 9♀.

Diagnosis.

The new species is morphologically similar to C. crestiforma Ren & Zhu, 2010, from which it can be separated by the outline of the male pala (Figs 2A View Figure 2 , 3B View Figure 3 ), the distinct pronotal carina on anterior part of pronotum, the feature of strigil (Figs 2F View Figure 2 , 3E View Figure 3 ), and the right paramere (Fig. 2E, G View Figure 2 ). The Cenocorixa of China are somewhat smaller than species from the Nearctic, varying from 5.10 to 5.80 mm in length. The Nearctic Cenocorixa are distinguished by the presence of the abdominal strigil and by the narrower, more reticulate dark bands of the hemelytra, which tend to form longitudinal stripes ( Lauck 1979).

Description.

Measurements: Male: Length of body 5.35 mm, width of body 1.72 mm; length of head 0.4 mm, width of head 1.72 mm, width of an eye 0.8 mm, interocular space 0.61 mm; length of pronotum 0.88 mm, width of pronotum 1.53 mm; length of pala 0.50 mm, width of median 0.17 mm; length of front tibia 0.33 mm, length of front femur 0.61 mm; length of segments of mesoleg: femur: tibia: tarsus: claw = 1.88: 0.91: 0.63: 0.80. length of forewing 4.50 mm, length of claval suture 2.11 mm, length of pruinose area of claval suture 0.82 mm; length of prenodal pruinose area of embolium 1.81 mm, length of postnodal pruinose area of embolium 1.02 mm. female: length of body 5.37 mm and width 2.02 mm; length of head 0.33 mm, width of head 1.88 mm, width of an eye 0.82 mm, interocular space 0.68mm; length of pronotum 0.70 mm, width of pronotum 1.58 mm; length of pala 0.59 mm, width of median 0.17 mm; length of front tibia 0.32 mm, length of front femur 0.62 mm; length of segments of mesoleg: femur: tibia: tarsus: claw = 1.81: 0.90: 0.62: 0.79; length of forewing 4.6 mm, length of claval suture 2.12 mm, length of pruinose area of claval suture 1.03 mm.

Moderately large and hairy, varying from 5.10 to 5.37 mm in length. Pattern on hemelytra consisting of numerous small, irregular, broken and anastomosing figures. Postocular space narrow; face depressed in male (Fig. 1A, B View Figure 1 ); median pronotal carina evident only on anterior third (Fig. 2C View Figure 2 ). Male pala broad, with longitudinal ridge on outside, at least basally; abdominal asymmetry dextral; strigil moderately large (Fig. 2F View Figure 2 ).

Color.

Body brown, with yellowish patterns (Fig. 1 View Figure 1 ); transverse bands on pronotum yellow; corium and membrane separated by a pale line; Basal 3 segments brown except lateral and posterior margin in male whereas abdomen ventral yellowish in female.

Vertex of head rounded and broad in both sexes; 7-9 bands on pronotum, sometimes discontinuous, equal or slightly wider than dark interspaces; lateral angle of pronotum blunt; lateral lobes of prothorax narrow, sides almost parallel, apex rounded; pala of male broad, with inconspicuous ridge across face, bearing a curving peg row consisting of 28-29 pegs, distal 5-7 pegs longer and spiculate (Fig. 2A View Figure 2 ); upper palmar bristles separated into two parts, 5 anterior and 26 posterior (Fig. 2A View Figure 2 ); metaxyphus triangular, base narrower than long; hemelytron with vermiculate patterns but irregular at apex of clavus (Fig. 2B View Figure 2 ); antennae with four segments, segment I-II thick and short, segment III thick and longest, segment IV slender and half the length of segment III (Fig. 2D View Figure 2 ); strigil quadrate consisting of 5 combs (Fig. 2F View Figure 2 ); median setiferous lobe of 7th abdominal tergite narrow and curved, apex blunt(Fig. 2F View Figure 2 ); right paramere strongly curved at apical 1/3, with a small pointed lobe at tip (Fig. 2G View Figure 2 ); left paramere of male as shown in Figure 2E View Figure 2 .