Comibaena campolinea Xian & Han, 2022

Pan, Zhaohui, Xian, Chunlan & Han, Hongxiang, 2022, Two new species of the genus Comibaena Hübner, 1823 (Lepidoptera: Geometridae) from China, Zootaxa 5190 (1), pp. 147-150 : 147-148

Comibaena campolinea Xian & Han sp. nov.

( Figs 1–4 , 13–14, 19 )

Type material. Holotype ♂ ( TAAHU), CHINA: Tibet, Hanmi , 29.VI.2021, STS 34898, leg. Pan Zhaohui. Paratype ( TAAHU): Tibet, 1♀, Mêdog 80k, 19.VII.2017, STS 6927, leg. Pan Zhaohui.

Diagnosis. On the wing pattern, C. campolinea is similar to Comibaena tibetensis Han, Galsworthy & Xue, 2012 ( Figs 9–12 ) for sharing the slightly concave, white and broad postmedial line, and the whitish basal area on the forewing. However, the tornal patch on both wings and the apical patch on hind wing are much smaller than in C. tibetensis , and the forewing postmedial line below vein CuA 2 is distinct and separate from the tornal patch in C. campolinea but merges with the tornal patch in C. tibetensis . The male genitalia are also different: the dorsal process of the costal lobe is absent in C. campolinea but present in C. tibetensis ( Fig. 17 ), the apical part of the costal lobe is pointed in C. campolinea but blunt in C. tibetensis , and the vinculum of C. campolinea is more deeply concave than in C. tibetensis .

Description. Head. Antenna in male bipectinate for about basal two-thirds, filiform terminally, outer rami longer than inner rami; antenna filiform in female. Frons green. Labial palpus with first segment brown, second and third segments white. Vertex green.

Thorax. Dorsal side of thorax green, white ventrally. Patagia yellow-green. Tegula green, yellow-green sub-basally, corresponding with costal area of forewing. Hind tibia with two pairs of spurs in both sexes, that of male dilated with hair-pencil and terminal extension.

Forewing length: ♂ 15 mm, ♀ 16 mm. Wings green, diffused with white scales and short and white transverse stripes. Forewing with costal area a straw-yellow band, tapering towards apex; antemedial line white, oblique, almost straight; area between wing base and antemedial line green diffused with white scales; postmedial line white, broad, slightly concave, almost parallel to antemedial line above CuA 2, turning inwards at a blunt angle below CuA 2, then straight to inner margin; outside postmedial line tinged with white scales, which extends to apex; submarginal line weak, white and wavy; terminal line white; two dark rubineous patches present near tornal angle, the anterior one larger; discal spot a tiny dark-brown dot, very weak. Hind wing with two elongate reddish-brown patches at apex and tornal angle respectively; transverse lines absent, but terminal line white. Fringes on both fore- and hind wings with basal half green, terminal half paler, median part a narrow dull white band. Underside whitish, forewing discal spot clearer than on upperside.

Abdomen. Dorsal side of abdomen green in fresh specimen, with white intersegments and white dorsal line; ventral side of abdomen white. Characters of third sternite and eighth segment in male unknown.

Male genitalia. Uncus well divided, tapered. Socii longer than uncus, basal part broad, terminal part tapering and hooked. Costal lobe petal-like, terminal part pointed decorated with small spines; ventral margin strongly sclerotized, with two small teeth. Valva blunt and slightly expanded at apex, with setae, ventral margin concave. Vinculum concave at middle, lateral branches broad and blunt. Aedeagus slender, spinulose; cornutus absent.

Female genitalia. Ovipositor lobes short and wide. Apophyses posteriores and anteriores almost in same length. Sterigma large, quadrate and solid, with posterior margin flat. Ductus bursae long and slender. Corpus bursae small and weak, signum absent.

Distribution. China (Tibet).

Etymology. The specific name is from the Latin prefix campo- and Latin word linea, referring to the infolding postmedial line.

Figures

FIGURES 1–12. Adults of Comibaena. 1–4, C. campolinea sp. nov. 1, male, holotype, upperside; 2, ibidem, underside; 3, female, paratype, upperside; 4, ibidem, underside; 5–8, C. parallela sp. nov. 5, male, holotype, upperside; 6, ibidem, underside; 7, female, paratype, upperside; 8, ibidem, underside; 9–12, C. tibetensis. 9, male, holotype, upperside; 10, ibidem, underside; 11, female, paratype, upperside; 12, ibidem, underside. Scale bar = 1 cm.

FIGURES 13–20. Genitalia. 13–18, male genitalia, including aedeagus. 13–14, C. campolinea sp. nov., holotype; 15–16, C. parallela sp. nov., holotype; 17–18, C. tibetensis, holotype. 19–20, female genitalia. 19, C. campolinea sp. nov., paratype; 20, C. parallela sp. nov., paratype.