Capnia xiei Chen & Du

Chen, Zhi-Teng & Du, Yu-Zhou, 2017, Description of two new Capnia species (Plecoptera: Capniidae) from the Hengduan Mountains of southwestern China, Zootaxa 4273 (4), pp. 595-599 : 597-598

publication ID

https://doi.org/ 10.11646/zootaxa.4273.4.9

publication LSID

lsid:zoobank.org:pub:AB0E12C7-0F21-4716-868D-114FD994B0EF

DOI

https://doi.org/10.5281/zenodo.6042044

persistent identifier

https://treatment.plazi.org/id/0B6F9E00-4A1D-FFA3-479D-CD37FD70FC42

treatment provided by

Plazi

scientific name

Capnia xiei Chen & Du
status

sp. nov.

Capnia xiei Chen & Du View in CoL , sp. nov.

Figs. 13–20 View FIGURE 13 – 20 .

Male. Body length 4.0 mm. Forewings length 5.4 mm, hindwings length 4.5 mm. Body generally dark brown. Head rounded and slightly wider than pronotum; three ocelli pale, compound eyes black ( Fig. 13 View FIGURE 13 – 20 ). Pronotum subquadrate, anterior corners obtuse, posterior corners right-angled. Wings macropterous, hyaline with brown venation; R vein of forewing straight at its divergence with Rs; anal field of hindwing small and folded with three veins ( Fig. 14 View FIGURE 13 – 20 ). Tergal antecosta interrupted on terga 1–4, complete on terga 5–10 ( Fig. 13 View FIGURE 13 – 20 ). Legs brown to dark brown. Cerci incomplete, each segment enlarged distally ( Fig. 13 View FIGURE 13 – 20 ).

Male abdomen: Terga 2–10 with sclerotized anterior margins ( Fig. 13 View FIGURE 13 – 20 ). Tergum 9 strongly sclerotized, anteriorly indented, with an elevated posteromedial process, symmetrically triangular in lateral view ( Figs. 16–17 View FIGURE 13 – 20 ). Tergum 10 cleft with sclerotized margins. Main epiproct sclerite split mesally, basally with raised, subtriangular bilamellar structure, medially slightly widened, and apically with paired, slightly incurved, finger-shaped lobes; from lateral view, main epiproct sclerite gradually enlarged at basal ¾, then tapered to a finger-shaped apex ( Figs. 15–17 View FIGURE 13 – 20 ). Sternum 9 with an elliptical, hairy vesicle, the vesicle longer than wide, length is one third of the length of subgenital plate ( Fig. 18 View FIGURE 13 – 20 ); subgenital plate subtriangular with darkly sclerotized lateral margins; paraprocts unfused, elongated and curved ( Fig. 18 View FIGURE 13 – 20 ).

Female. Body length 5.0– 5.5 mm. Forewings length 5.5–6.0 mm, hindwings length 5.0– 5.5 mm. General color similar to male, abdominal terga 2–8 with a medial pale stripe ( Fig. 19 View FIGURE 13 – 20 ). Sternum 8 medially sclerotized; subgenital plate broad basally, then narrowed to a rectangular apex, not beyond the lateral sclerites of sternum 8; the lateral sclerites subtriangular with rounded angles ( Fig. 20 View FIGURE 13 – 20 ).

Type material. Holotype male, China: Qinghai Province, Maqin County, The Aemye Ma-chhen Range , 34°52'03'' N, 99°28'16'' E, 4500m, 8 July, 2013, Leg. Guang-lin Xie ( ICYZU). Paratypes: 8 females, same locality and data as holotype. GoogleMaps

Etymology. The species is named for Guang-lin Xie, who collected the types.

Remarks. This new species is also a member of the C. cordata species group sensu Zhiltzova (2001). It’s similar to C. yunnana in having a bifurcate epiproct, but can be distinguished by basal bilamellar structure of the high main epiproct sclerite, and by apex of epiproct shorter and not swollen. In addition, the subgenital plate of females in the new species has a rectangular apex, and posterior margin of this apex is much more flattened than that in C. yunnana (see fig. 4 in Li et al. 2011).

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Plecoptera

Family

Capniidae

Genus

Capnia

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