Miniterpnosia chorus, Lee, 2013

Lee, Young June, 2013, Description of a new genus, Miniterpnosia n. gen., and a new species of cicada (Hemiptera, Cicadidae, Cicadini, Leptopsaltriina) from Laos, Zoosystema 35 (1), pp. 5-10 : 7-9

Miniterpnosia chorus n. sp.

(Figs 1; 2)

TYPE MATERIAL. — Holotype: Laos, Xamneua , Ban Saleui , Mt Pan (Ph-Pan), 27.IV-2.V.2003, Harukie Karuba, ♂. The holotype is deposited in the collections of the Muséum national d’Histoire naturelle, Paris.

ETYMOLOGY. — The specific name is the Latin masculine noun “chorus” meaning “the chorus” in reference to the singing instinct of the cicadas.

DIAGNOSIS. — Postclypeus with a pair of longitudinal median fasciae from anterior margin to near to posterior margin of postclypeus. Mesonotum with sublateral longitudinal fascia continuous, not interrupted; with median longitudinal fascia always narrower than sublateral longitudinal fascia. Male operculum subquadrate. Basal lobes of male pygofer with rounded triangular apex of about 60°.

DESCRIPTION OF MALE

Head (Fig. 1A, B)

Head wider than mesonotum; reddish ochraceous (probably due to discolouration) with the following black marks: large median spot enclosing ocelli, reaching frontoclypeal suture but not reaching posterior margin of head; a pair of crescent moon shaped marks between the median spot and eye; a pair of small spots on posterolateral corners, touching posterior side of the crescent moon shaped marks; a pair of small transverse oblong spots on supraantennal plates.Gena each with thick transverse fascia between postclypeus and eye. Lorum mostly black except for ochraceous anterior and lateral margins. Postclypeus moderately swollen; ochraceous with the following black marks: a pair of longitudinal median fasciae from anterior margin to near to posterior margin of postclypeus; long fasciae along anterior three pairs of transverse grooves; short fasciae along inner parts of the rest of transverse grooves, with their medial ends connected with the longitudinal median fasciae. Anteclypeus mostly fuscous except for ochraceous median ridge and anterior part. Rostrum ochraceous but black apically, with apex reaching hind coxae.

Thorax (Fig. 1A, B)

Pronotum reddish ochraceous (probably due to discolouration). Inner area of pronotum with the following black marks: a pair of median longitudinal fasciae, with their anterior and posterior ends widened laterad; a fascia along margin of inner area, except postero-median part; irregular shaped fasciae along fissures; a pair of short oblique longitudinal fasciae between about middle of paramedian fissure and posterior end of lateral fissure. Pronotal collar without distinct marks. Lateral pronotal collar not dentate. Mesonotum slightly greenish ochraceous (probably due to discolouration) with the following black marks: longitudinal median fascia extending posteriad to reach anterior margin of cruciform elevation; a pair of curved fasciae along lateral margin of submedian sigilla; a pair of thick longitudinal fascia on lateral sigilla, with posterior end sharply curved laterad; a pair of short triangular spot between anterior end of the fasciae along lateral margin of submedian sigilla and anterior end of the longitudinal fascia on lateral sigilla, touching anterior margin of mesonotum; a pair of spots enclosing scutal depression. Cruciform elevation ochraceous with black anterior subapical parts. Thoracic sternites pale ochraceous.

Wings (Fig. 1A)

Wings hyaline with no infuscations and slightly tinged with light brown. Forewing ulnar cell 3 comparatively long, slightly longer than medial cell. Venation mostly fuscous but ochraceous basally. Radius and subcostal vein ochraceous. Basal cell hyaline. Basal membrane and hindwing jugum gray.

Operculum (Fig. 1C)

Operculum ochraceous with broadly fuscous anterior margin and with narrowly fuscous anterolateral and medial margins; slightly longer than broad, subquadrate, not extending beyond posterior margin of sternite II. Two opercula widely separated from each other with gap of about ∕₄ as wide as operculum. Meracanthus ochraceous.

Abdomen (Fig. 1A-C)

Abdomen cylindrical, about 1.14 times (n = 1) as long as head and thorax together.Tergite 1 ochraceous with black posterior margin. Tergites 2-4 ochraceous. Tergite 5 brown. Tergite 6 dark brown to fuscous.Tergites 7 and 8 black. Posterior margin of tergite 2 or 3 slightly narrower than mesonotum. Timbal cover semicircular, very short, its length about ⅓ the largest width; mostly black except for posterior margin. Sternites I and II black. Sternites III-V grayish ochraceous. Sternite VI fuscous to black. Sternite VII black. Sternite VIII grayish ochraceous with longitudinal narrow median fuscous fascia and fuscous anterior margin.

Genitalia ( Fig. 2 )

Pygofer elliptical with narrowed apex in ventral view. Distal shoulder dull triangularly pointed. Uncal lobe not bifurcate, short and narrow with round apex, incised triangularly at middle, in ventral view; half moon shaped in lateral view. Basal lobes of pygofer well developed, with rounded triangular apex of about 60°. Aedeagus slender near apex.

MEASUREMENTS (N = 1 MALE). — Median length of body: 15.8; median length of head and thorax together: 7.4; median length of abdomen: 8.4; width of head including eyes: 5.3; width of mesonotum: 4.8; width of posterior margin of abdominal tergite 2: 4.5; length of forewing: 23.1; width of forewing: 7.5; wing span: 48.8.

Miniterpnosia mega ( Chou & Lei, 1997) n. comb. ( Fig. 3 )

Terpnosia mega Chou & Lei in Chou et al. 1997: 210 , 367, pl. 9 (100), figs 9-61.

TYPE LOCALITY. — Hunan, China.

DISTRIBUTION. — China (Hunan).

DIAGNOSIS. — Postclypeus with a pair of longitudinal median fasciae short, only on anterior part of postclypeus. Mesonotum with sublateral longitudinal fascia interrupted in middle and divided into two; with median longitudinal fascia broader, especially in posterior part, than sublateral longitudinal fasciae. Male operculum circular. Basal lobes of pygofer with widely truncated apex.

Figures

FIG. 2. — Miniterpnosia chorus n. gen., n. sp., holotype, male pygofer, Xamneua, Laos: A, ventral view; B, lateral view. Scale bar: 1 mm.

FIG. 3. — Holotype of Miniterpnosia mega (Chou & Lei, 1997) n. comb. (Northwest A&F University,Yangling, China): A, dorsal habitus; B, ventral habitus. Body length: 19 mm.