Pyrops buomvoi, Constant & Pham, 2022

Constant, Jérôme & Pham, Hong Thai, 2022, The Lanternfly genus Pyrops in Vietnam: A new species from Central Vietnam, taxonomic changes, checklist, identification key (Hemiptera: Fulgoromorpha: Fulgoridae), European Journal of Taxonomy 813 (1), pp. 123-154 : 126-130

Pyrops buomvoi sp. nov.

urn:lsid:zoobank.org:act:2AFA915E-398C-4F10-A3B7-E68FA9DC2053

Figs 1–3

Diagnosis

The species can be separated from all other species of Pyrops by the following combination of characters: (1) posterior wings milky white with apex and area along sutural margin black brown, with brown area paler and narrower towards basosutural angle ( Fig. 1B );

(2) cephalic process elongate and very slender, moderately curved dorsad ( Fig. 1C–G );

(3) head yellow with dorsum and sides of cephalic process reddish ( Fig. 1 );

(4) tegmina with 3 irregular yellow bands on basal half, the two more distal ones formed from rows of elongate markings ( Fig. 1B ).

Differential diagnosis

The other species of Pyrops showing white posterior wings with dark brown or black apical portion are P. atroalbus ( Distant, 1918) , P. condorinus ( Lallemand, 1960) , P. connectens ( Atkinson, 1885) , P. dohrni (Schmidt, 1905) , P. horsfieldii ( Westwood, 1839) , P. lathburii ( Kirby, 1818) , P. vitalisius ( Distant, 1918) and P. watanabei (Matsumura, 1913) but none of them shows a black band along the posterior margin of the hind wing extending to the basosutural angle and none of them possess a very slender cephalic process.

All other species of Pyrops showing a very slender cephalic process, i.e., P. hamdjahi Nagai & Porion, 2002 , P. hashimotoi Nagai & Porion, 2002 and P. valerian Nagai & Porion, 2002 have brightly coloured base of posterior wings, red, blue and orange, respectively.

Etymology

The species epithet buomvoi is a Vietnamese name for the species of the genus Pyrops , with ʻ[con] buom ʼ meaning ʻbutterflyʼ and ʻ[con] voi ʼ meaning ʻelephantʼ. The name literally means ʻbutterfly-elephantʼ and is used as a name in apposition.

Material examined

Holotype VIETNAM • ♂ (dissected, portion of cephalic process missing); Annam , Cana; [11°22′16″ N, 108°51′11″ E]; 18–22 Aug. 1932; alt. 0–600 m; Pinus merhusii belt; M. Poilane leg.; “Annam-Cana, Prov. Phanrang, VIII-18-22-1932 ”, “ Pinus merkusii belt – alt. 0-600M”, “ M Poilane Coll”; VNMN.

Paratype ( Fig. 1 ) VIETNAM • ♀; same collection data as holotype; I.G. 34472 ; RBINS .

Measurements and ratios

TL: ♂ (n = 1): 29.6 mm, ♀ (n = 1): 30.9 mm; TL+process: ♀ (n = 1): 41.3 mm; LTg/BTg = 2.79; BF/ BPrH = 5.4; LPr/LF = 3.43; LPr/BPrH = 19.

Description

HEAD. Yellow with clypeus slightly darker; dorsum and sides of cephalic process reddish; back-side of head and markings around eyes, extending to ocelli, dark brown ( Fig. 1C, E–G ). Cephalic process elongate and very slender, strongly tapering basally, slightly less than 1.5 times as long as frons and clypeus combined in perpendicular view of frons ( Fig. 1G ), moderately curved anterodorsad and rather uniform in breadth in lateral view ( Fig. 1D ); distinct broadening visible in ventral and dorsal views at apical ¾ of process ( Fig. 1C, G ), at same level, ventral margin slightly sinuate in lateral view ( Fig. 1E ). Two longitudinal carinae on frons extending on sides of cephalic process up to apex ( Fig. 1E–G ). Median, ventral carina on apical ⅔ of cephalic process ( Fig. 1F–G ). Vertex with weak carina extending from middle of disc to base of cephalic process; straight carina along posterior margin ( Fig. 1C ). Frons subquadrate ( Fig. 1F ). Clypeus elongate, triangular, smooth with median carina on anteclypeus ( Fig. 1F–G ). Labium brown-black, elongate and slender, surpassing posterior trochanter ( Fig. 1A ). Antennae brown, short, with pedicel bulbous ( Fig. 1E–G ).

THORAX. Pronotum yellow with two small, impressed brown points on disc on each side of obsolete median carina, disc slightly wrinkled ( Fig. 1C ); pair of weak parallel carinae along lateral margin of pronotum and on dorsal portion of lateral lobe of pronotum ( Fig. 1E–F ); elongate lateral marking along anterior margin of lateral lobe of pronotum, not reaching ventral margin, brown behind eye, turning to black-brown ventrad, behind ocelli; subtriangular black-brown marking in middle of ventral margin of lateral lobe of pronotum ( Fig. 1E–G ). Mesonotum yellow with brown markings along anterior margin, small black-brown point near base of scutellum along posterior margin and elongate, oblique, blackbrown marking extending laterad from intersection between peridiscal carina and posterior margin; median and peridiscal carinae weak, median one stopped before base of scutellum; disc slightly wrinkled between peridiscal carinae; base of scutellum impressed; lateral fields smooth ( Fig. 1C ). Tegulae yellow ( Fig. 1C–F ).

TEGMINA ( Fig. 1B ). Brown with dense reticulum of pale yellow veins and cross-veins; corium with subbasal transverse yellow band followed by two transverse rows of slightly transverse yellow markings (markings can merge together), the more basal one irregular with the marking on disc along clavus, displaced distad (hence the two rows together more or less forming an X-shaped pattern); yellow markings more intensely margined with brown membrane with about 12 irregular round yellow spots (including 2 in costal cell), more distal ones smaller. Tegmina elongate, broadening from base towards apex, rather narrow, with costal margin broadly rounded in distal half, apical margin oblique and apical angles rounded.

HIND WINGS ( Fig. 1B ). Milky white with apex and sutural margin largely brown-black; brown-black area getting paler and narrower from apex towards base along sutural margin and stopping at basosutural angle; veins in brown-black area progressively turning from black-brown in distal portion, to whitish at basosutural angle; veins in milky white area concolourous. Hind wings strongly broader than tegmina.

LEGS ( Fig. 1A–B ). All coxae, trochanters and femora orangish; pro- and mesotibiae and all tarsi dark brown; metatibiae orangish basally progressively turning to brown on distal ⅓. Pro- and mesofemora broader than corresponding tibiae. Metatibiae with 5–6 lateral spines.

ABDOMEN ( Fig. 1A–B ). Terga yellowish; sterna black-brown, narrowly yellow along posterior margin; genital segments black-brown and yellowish.

MALE TERMINALIA ( Fig. 2 ). Pygofer higher than long, with posterior margin broadly rounded, sinuate on ventral ¼ in lateral view ( Fig. 2A ). Gonostyli ( Fig. 2 A–B, D–F ) elongate, 1.64 times as long as high in lateral view, not surpassing apex of anal tube; dorsal margin broadly rounded, with a small elongate lobe in middle; in lateral view, apical margin rounded and ventral margin straight; fused ventrally on basal ⅕; lateral hooks of gonostyli short, moderately curved and pointing anteroventrally. Aedeagus membranous with pair of elongate ventral endosomal processes widening on distal half ( Fig. 2 G–J ); connective rodshaped ( Fig. 2I ); tectiductus well-developed, subtriangular with anterior margin concave in dorsal view, strongly concave ventrally ( Fig. 2G–J ). Anal tube ( Fig. 2 A–C, F ) elongate and dorsoventrally flattened, 1.4 times as long as broad in dorsal view (about as broad as long in mid-length), broadest at ⅔ of total length ( Fig. 2C ); lateral margins broadly rounded ( Fig. 2C ) and apical margin deeply, roundly notched in dorsal view ( Fig. 2C ); anal column elongate and narrow, surpassing anal tube posteriorly ( Fig. 2A, C–D ).

Distribution

Vietnam, Ninh Thuan Province ( Fig. 3 ).

Biology

The species was collected at an altitude between 0–600 m above sea level, in a zone of Pinus merkusii Jungh. & de Vriese ( Pinaceae Spreng. ex Rudolphi ). However it seems very unlikely that this tree could be a host plant of the species as no species of Pyrops has ever been recorded feeding from conifers ( Bourgoin 2021).

Figures

Fig. 1. Pyrops buomvoi sp. nov., paratype ♀ (RBINS). A. Habitus, ventral view. B. Habitus, dorsal view. C. Head and thorax, dorsal view. D. Habitus, lateral view. E. Head and thorax, lateral view. F. Head and thorax, anterolateral view. G. Head, perpendicular view of frons. C, E–G = not to scale.

Fig. 2. Pyrops buomvoi sp. nov., holotype, male genitalia (VNMN). A–F. Pygofer, anal tube and gonostyli. A. Lateral view. B. Posterolateral view.C. Dorsal view. D. Ventral view.E. Posteroventral view.F. Caudal view. G–J. Aedeagus. G. Dorsal view. H. Laterodorsal view. I. Lateral view. J. Ventral view. An = anal tube; Ae = aedeagus; cv = connective; G = gonostyli; Pe = periandrium; Py = pygofer; td = tectiductus.

Fig. 3. Pyrops buomvoi sp. nov., distribution map.