Calicnemia chaoi Wilson, 2004, SP. NOV.
Creators: name: Wilson, K. D. P.
Publisher: name: Zenodo
Year: 2004
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Odonata
Platycnemididae
Calicnemia
Calicnemia chaoi

description: CALICNEMIA CHAOI SP. NOV.
Figures 15-21
Material. — Holotype S: Pengshan (Dadingshan), Shikengkong,N Guangdong, China, 1 -VII-2000, K.D.P. Wilson leg. — Allotype: 9, ditto, 1 -VII-2000. — Paratypes; 1 3, Henglongbei, Shikengkong, 28- -Vl-2002; 7 3,1 ể Dadingshan, Shikengkong, N Guangdong, 30-V-2000; 1 3, Longtanjiao, N Guangdong, 2- VII-2000; I 9, Cheng Jia, N Guangdong, 5-VII-2000. Holotype willbe deposited at Tai Lung Experimental Station, Agriculture, Fisheries and Conservation Department, Lin Tong Mei, Sheung Shui, Hong Kong SAR. China.
Etymology, — Named in honour ofthe late Chao Hsiu-fu.
Description. — A Calicnemia with bright red coloured abdomen and amber tinted wings.
MALE. — Pale labium. Labrum, base of mandibles, genae, shiny orange red. Frons and clypeus carmine red. Irregular transverse line across front of head covering base of frons and base of antennae (Fig. 15). A pair of quadrate, carmine red spots above antennae almost linked below central ocellus. Top of head matt black with elongate, yellow, tear-- shaped postocular spots. Prothorax matt black with pale yellow lateral spots (Fig. 16). Synthorax black with broad, bright red dorsal stripe. Sidesof orange synthorax with a yellow stripe across metepistemum, covering the spiracle and lower metepimeron and metapostemum yellow (Fig. 16). Legs pale reddish brown. Wings uniformly tinted rich amber. Pterostigma greyish-brown, braced at proximal comer and subtending two to three cells (Fig. 21). Abdomen bright, bloodred with segment 1 pale orange and segment 10 blackish at distal border. Caudal appendages as figured in Figures 19-20 with long twice of 10th abdominal Inferior superior appendages length segment. appendages slightly longer than segment 10 with prominent downward and inward pointing basal pegs. Penile with simple, short, broad, quadrate lobes as illustrated in Figures 17-18. organ
FEMALE. — As male with red and red pattern of frontalhead replace with pale orange Dorsal thoracic stripe is fine yellow. Abdomenis uniformly dull red orange. orange apart from 1 which is pale yellow and dorsum of abdominal 8-10 which segment segments are coloured dark brown. Wings, like the male, are strongly tinted uniformly amber.
Measurements (mm): t?,abd. + app.31.5-33.0;hw.22.0-24.0; 2 abd. + app.27.5-29.0,hw22.0-24.0.
DIFFERENTIAL DIAGNOSIS. - LIEFTINCK (1984) divided all the members of Calicnemia into two main species according to the structure of their penile groups organs. Group I species a pair of recurved penile lobes ending in ribbon-like possess narrow, filaments whereas Group II species have a recurved penis with broadly expanded lobes. C. chaoi belongs to the latter group. Of the six Calicnemia species known from China and adjacent Vietnam four, comprising C. eximia (Selys), C. erythromelas (Selys), C. imitans Lieftinck, and C. sinensis Lieftinck, have Group I penile The remainorgans. ing two species, C. miles (Laidlaw), and C. uenoi Asahina have Group II penile organs. C. uenoi has a fine ventral and only the anterior half of the abdomen is coloured peg red (ASAHINA, 1997). C. miles (Laidlaw) is undoubtedly the closest and congener from the unique amber wings of chaoi it is difficult to separate the two species. apart The apical tips of the penile lobes of chaoi are reflexed and subacute, almost squarish, whereas the apical lobes of miles are curved, but not reflexed, and sharply pointed (cf. ASAHINA, 1985: 4-5, figs 9-16).
description: Published as part of Wilson, K. D. P., 2004, New Odonata from South China, pp. 423-432 in Odonatologica 33 (4) on pages 428-429, DOI: 10.5281/zenodo.3358876