Guangxicalopteryx huashanensis, HUANG & LIU & LIAN & FU & NEL, 2022

HUANG, DI-YING, LIU, QI, LIAN, XIN-NENG, FU, YAN-ZHE & NEL, ANDRÉ, 2022, A new calopterygid damselfly (Odonata, Zygoptera) from the Oligocene Ningming Basin, Guangxi, South China, Palaeoentomology 5 (2), pp. 113-119 : 114-115

Guangxicalopteryx huashanensis sp. nov.

( Figs 1 , 2 ) urn:lsid:zoobank.org:act:03C70E49-70B3-431B-BE71-DBDB055E85B7

Material. Holotype NIGP179898 a, b, a forewing with basal part (petiole) missing.

Etymology. The specific name ‘huashanensis’ comes from the famous Huashan rock paintings at the Ningming County, dated 2,000 years ago.

Diagnosis. As for the genus.

Type locality and horizon. A locality near Ningming County; lower Oligocene .

Description. Wing base destroyed; wing completely darkened, possibly corresponding to a blue metallic original coloration as it frequently occurs among the Calopterygidae (especially in male specimens); length of preserved part 42.0 mm long, wing 14.2 mm wide, distance between base and nodus unknown, between arculus and nodus ca. 7.1 mm, between nodus and pterostigma 29.5 mm, between pterostigma and wing apex 5.0 mm; pterostigma short but strongly sclerotized, 2.1 mm long, 0.8 mm wide, covering five small cells; no pterostigmal brace; discoidal and subdiscoidal spaces not preserved; at least 14 antenodal crossveins preserved but they were probably much more numerous; ca. 60 postnodal crossveins between nodus and pterostigma; bases of RP3/4 and IR2 close to arculus but poorly preserved; base of RP2 two cells distad subnodus; RP3/4 apparently forked distally; no oblique vein ‘O’; base of IR1 (first longitudinal vein in area between RP1 and RP2) 11 cells distad that of RP2; two long supplementary longitudinal veins between RA and IR1, most basal one being midway between base of RP2 and pterostigma; two shorter intercalaries between these elongate intercalaries; two other such intercalary veins between IR1 and RP2; a strong elongate intercalary longitudinal vein between RP2 and IR2; area between IR2 and RP3/4 greatly broadened distally with several secondary longitudinal veins between them; area between RP3/4 and MA with two such veins in its distal half; postdiscoidal area rather narrow, with a very long intercalary longitudinal vein; 1-3 rows of cells in area between MP and CuAa; 2-3 rows of cells between CuAa and posterior wing margin, with only one row near its base; MP and CuAa weakly curved; CuA not secondarily forked into two strong branches CuAa and CuAb (CuAb very short and weak).

Figures

FIGURE 1. Fossil locality. A, Map of fossil locality. B, Photograph of fossil collecting.

FIGURE2.Guangxicalopteryx huashanensisgen.etsp.nov., holotypeNIGP179898,photographs.A, Counterpart(NIGP179898b). B, Counterpart under alcohol. C, Part (NIGP179898a), covered with a carbonaceous film. Scale bars = 5 mm.