Coeliccia hayashii Phan & Kompier, 2016

Kompier, Tom, Dow, Rory A. & Steinhoff, Philip O. M., 2020, Five new species of Coeliccia Kirby, 1890 from Vietnam (Odonata: Platycnemididae), and information on several other species of the genus, Zootaxa 4766 (4), pp. 501-538 : 522-525

publication ID	https://doi.org/ 10.11646/zootaxa.4766.4.1
publication LSID	urn:lsid:zoobank.org:pub:2F8FEDC1-6891-46D1-B372-858CDCBE4051
DOI	https://doi.org/10.5281/zenodo.3803432
persistent identifier	https://treatment.plazi.org/id/AF6A87D5-4379-6168-FF6A-DC744B823CF8
treatment provided by	Carolina
scientific name	Coeliccia hayashii Phan & Kompier, 2016
status

Treatment

6. Coeliccia hayashii Phan & Kompier, 2016 View in CoL

( Figs 14c View FIGURE 14 , 16c View FIGURE 16 , 17c View FIGURE 17 , 18 View FIGURE 18 a–b, 19c, 20b, 22c, 28b–c)

Specimens examined. 1 ♂, 1 ♀ (in tandem), K’Bang District, Gia Lai Prov. (appr. 14.174N, 108.633E; alt. 710 m asl.), 13 v 2017, TK leg.

Description of female. Head ( Fig. 14c View FIGURE 14 ). Labrum shiny black, base of mandibles bluish white, anteclypeus bluish white with two blackish spots on its lower margin. Postclypeus shiny black. Genae pale yellow, the yellow con-

tinuing a quarter inward over the antefrons above the postclypeus, remainder of frons matte black. Dorsal surface of head matte black, apart from a broad pale yellow band between median and lateral ocelli, lateral ocelli and antennae, and thinner from antennae to edge of compound eye. Two oblong blue postocular spots. Antennae black, first segment and base of second segment pale grey. Compound eyes in life blackish brown dorsally, mint green below.

Thorax. Prothorax ( Figs 16c View FIGURE 16 , 17c View FIGURE 17 , 18 View FIGURE 18 a–b): black with large round yellow mark on either side on middle pronotal lobe, lower edge of middle pronotal lobe with black line not quite completely encircling yellow mark anteriorly. Propleuron yellow. The posterior pronotal lobe ( Fig. 18 View FIGURE 18 a–b) spectacular, central part expanding from base into two pointed arms directed outward and upward ( Fig. 18a View FIGURE 18 ), posterior margin between these arms smoothly convex in dorsal view ( Fig. 18b View FIGURE 18 ). Lapels small. Synthorax ( Figs 19c View FIGURE 19 , 20b View FIGURE 20 , 28b View FIGURE 28 ): mesepisternum black, with a distinct bluish white antehumeral stripe along almost its complete length. Mesepimeron and mesinfraepisternum black. Metepisternum yellow, but black line over metapleural suture. Metepimeron and metinfraepisternum yellow. Legs: coxae and trochanters yellow. Femur grey with black lines, remainder, claws and spines dark grey.

Wings. Hyaline, 19–20 Px in FW, 18 in HW. Pt brown, covering 1.5 cells.

Abdomen ( Fig. 28c View FIGURE 28 ). S1 yellow with posterior margin and dorsum narrowly black; S2 black dorsally and pale below, with apical black ring; S3–7 black, with S3–4 with blue basal annulus, and paler below, but apical margin black; S8 yellow, but lateral and dorsal basal half black; S9 yellow with small lateral black mark at apical margin; S10 black.

Anal appendages ( Fig. 22c View FIGURE 22 ). Cerci black, half as long as S10, ovipositor black, extending the length of S10 beyond S10, with dorso-apical pale spot.

Measurements (in mm). HW 30; abdomen incl. appendages 45.

Differential diagnosis. Although the general structure of the posterior pronotal lobe of the prothorax of C. hayashii is similar to that of C. coronata , C. diomedea , C. duytan and C. lecongcoi , the combination of a rounded outline of the posterior edge and the two elongated lateral extensions (‘wings’) raised at over 45 degrees separates it from these, except from C. duytan ( Fig. 18 View FIGURE 18 ; Phan 2017, 2019). The female of C. duytan illustrated in Phan (2017: Fig. 3 View FIGURE 3 c–d) has a prominent lower cervical spur as defined by Dow (2016). This spur is not prominent in C. hayashii ( Figs 16c View FIGURE 16 , 17c View FIGURE 17 ) and possibly may serve to separate these species. Coeliccia duytan may generally be smaller than C. hayashii (the female C. duytan in Phan (2017) has abdomen length of only 35 mm against 45 mm in our specimen of C. hayashii ), but the scarcity of specimens precludes a definite statement on the importance of this difference. Color differences between the females of both species are minimal.