Metallolophia stueningi Han and Xue, 2005

Han, Galsworthy, A. & Xue, 2005, A revision of the genus Metallolophia Warren (Lepidoptera, Geometridae, Geometrinae), Journal of Natural History 39 (2), pp. 165-195 : 193-194

publication ID	https://doi.org/ 10.1080/00222930310001657865
persistent identifier	https://treatment.plazi.org/id/907387D9-C008-FFC6-FEB4-FC44EEAACA8E
treatment provided by	Felipe
scientific name	Metallolophia stueningi Han and Xue
status	sp. nov.

Treatment

Metallolophia stueningi Han and Xue View in CoL sp. nov.

( Figures 42, 43 View Figures 22–43 , 67 View Figures 65–67 )

Description

Male. Length of fore wing: 26–28 mm. Very close to M. arenaria (Leech) . Frons and palpus black. Antennal branches distinctly shorter than diameter of flagellum. Abdominal crests on second abdominal segment very weak, on abdominal segments 3–4 normally developed, but without metallic gloss. Both wings with outer margin crenulate, the concavities between M 3 and Cu 1 deeper than the others. Wing colours as in M. arenaria , but with antemedian line on fore wing, and postmedian line on both wings much more sharply expressed; antemedian line of fore wing with a distinct inner, and postmedian line on both wings, a distinct outer white shade. Postmedian line on fore wing much more strongly curved than in M. arenaria . The large reniform discal spot on the fore wing broader, with the boundary weak and indistinct. Fringes olive green, mixed with a little white between veins. Underside: close to M. arenaria , but large reniform discal spot on both wings with the central white area reduced; purple postmedian band on fore wing stronger, with spot between Cu 1 and Cu 2 much expanded inwards, almost touching lower margin of cell. Trace of upperside postmedian line distinct between R 5 and Cu 1, distant from postmedian band. Postmedian band on hind wing underside much weaker. Subterminal band dark purple, interrupted under M 3, not extended to outer margin on fore wing.

Male genitalia ( Figure 67 View Figures 65–67 ). Socii thick and short. Valva narrower than that of M. arenaria , less produced at middle; basal lobe with the terminal half round, not peanut-shaped. Saccular process identical to that in M. arenaria . Aedeagus smaller, ‘Y’-shaped cornutus much narrower, a little shorter, the additional bubble-like sclerite very small and weak.

Female. Unknown.

Diagnosis

The new species is very closely related to M. arenaria (Leech) , but there are several distinct differences. The antennal branches are as long as the diameter of the shaft, while in M. arenaria the antennal branches are always longer than the diameter of the shaft. The postmedian line on the fore wing between M 1 and Cu 1 protrudes much more strongly than in M. arenaria . On the fore wing underside, the postmedian band has the spot between Cu 1 and Cu 2 much more expanded inwards to near the lower margin of cell, and the subterminal band on the fore wing not extending to the outer margin, while in M. arenaria the spot between Cu 1 and Cu 2 is not expanded inwards, and the subterminal band extends to the outer margin. In the male genitalia the valvae are narrower, and the terminal half of the basal lobe round, as against centrally constricted in M. arenaria ; the ‘Y’-shaped cornutus and the additional bubble-like sclerite are smaller than those in M. arenaria .

HOLOTYPE: „, Vietnam, Mt Fan-si-pan, Cha-pa, 1500–1800 m, 22 ° 159N, 103 ° 469E, 8–29 May 1993, coll. Sinjaev and Simonov, ex coll. A. Schintlmeister ( ZFMK).

PARATYPES: 3 „„, N. Vietnam: Mt Fan-si-pan, Cha-pa, 1500–1800 m, 22 ° 159N, 103 ° 469E, 8–29 May 1993, coll. Sinjaev and Simonov, ex coll. A. Schintlmeister; 1 „, N. Vietnam, Mt Fan-si-pan, western slopes, Cha-pa (5Sapa), 1600–1800 m, 22 ° 09N, 103 ° 09E, sec. forest/cult. area, 10 June to 6 July 1994, coll. V. Sinjaev and local collectors ( ZFMK); 1 „, N GoogleMaps . Vietnam: Mt Fan-si-pan, Cha-pa, 1500–1800 m, 22 ° 159N, 103 ° 469E, 8–29 May 1993, coll. Sinjaev and Simonov, ex coll. A. Schintlmeister ( IZCAS) .

Distribution

Vietnam.