Linguisaccus minor, Han & Galsworthy & Xue, 2012

Han, Hongxiang, Galsworthy, Anthony C. & Xue, Dayong, 2012, The Comibaenini of China (Geometridae: Geometrinae), with a review of the tribe, Zoological Journal of the Linnean Society 165 (4), pp. 723-772 : 762

LINGUISACCUS MINOR SP. NOV.

( FIGS 48 , 101 , 149 , 171 , 204 )

Description: Antenna in male bipectinate with long rami, outer rami longer than inner rami; filiform in female. Frons green, with upper and lower margins white, mixed with a few red scales; female frons with a round reddish patch at the middle, mixed with green, margins white. Labial palpus with dorsal and lateral surfaces black mixed with white, ventral surface white; the third segment blackish-brown, in female distinctly elongate with white tip; the second segment in female white decorated with sparse reddish scales. Vertex green. Tegula green, with subbasal white patch bordered with red corresponding to costal band of forewing. Dorsal side of thorax and abdomen green; metathorax and the anterior four abdominal segments with small white patches, bordered with reddish-brown scales, very large on the fourth abdominal segment. Hind tibia in male with terminal extension almost of equal length with the first tarsus.

Forewing length: ♀ ♂ 11.5– 13 mm. Wing patterns similar to those of L. subhyalina . Costal band scattered with more reddish and brown scales, not purely a white band as in L. subhyalina . White patches smaller, especially the two patches on vein M 3, and the antemedial patch on the inner margin.

Third sternite in male with a pair of setal patches. Eighth segment in male modified, tergite with two stout lateral processes, sternite with a pair of widely divided triangular processes.

Male genitalia. Socii long and thin. Gnathos ring-like. Valva short and broad, costa swollen, setose ventrally. Saccus long and narrow. Aedeagus short, mostly sclerotized.

Female genitalia. Sterigma an oval sclerite. Ductus bursae and corpus bursae combined, incrassate.

Diagnosis: The species is externally similar to Chlorochromodes albicatena (Warren) ( India) , but the male genitalia obviously belong to a different type. Compared to L. subhyalina , the costa of the forewing is scattered with many more reddish scales, whereas it is purely white in L. subhyalina ; the white spots on M 3, the tornal patch on the forewing, and the white patch on the end of M 3 on the hindwing outer margin are smaller than those of L. subhyalina . The tornal patches on both wings are more rounded, but the one on the forewing is more or less triangular and the hindwing one is elongate in L. subhyalina . The male genitalia are quite similar to those of L. subhyalina , but the saccus is longer and the valva is shorter and broader. The male eighth tergite has much shorter lateral branches. The female genitalia are quite different in the two species ( Figs 203, 204 ).

Holotype ♂, China: Hainan: Lingshui, Diaoluoshan , 920 m, 3.v.2007, coll. Han Hongxiang ( IZCAS) . Paratypes ( IZCAS): China: 3♀, same locality as holotype, 2.v.2007, coll. Lang Songyun, Han Hongxiang, IZCAS slide no. Geom-01053 ; 1♂, same locality as holotype, 95 m, 10.xii.2007, coll. Li Jing, IZCAS slide no. Geom-01054 ; 1♀, Hainan: Ledong, Jianfengling Yulingu , 707 m, 21.v.2009, coll. Chen Fuqing, IZCAS slide no. Geom-01077 ; 1♀, Hainan: Jianfengling , 7.iv.1982, coll. Liu Yuanfu.

Distribution: China (Hainan).

Etymology: The specific name is the Latin word minor , which means smaller.

Figures

Figures 27–54. Comibaenini moths. 27, Comibaena nigromacularia; 28, Comibaena subdelicata; 29, Comibaena procumbaria; 30, Comibaena subprocumbaria; 31, Comibaena tenuisaria; 32, Comibaena cenocraspis; 33, Comibaena hypolampes; 34, Comibaena latilinea; 35, Comibaena swanni; 36, Comibaena birectilinea sp. nov., holotype; 37, Microbaena pulchra minor; 38, Thetidia albocostaria; 39, Thetidia correspondens; 40, Thetidia atyche; 41, Thetidia chlorophyllaria, 42, holotype of Thetidia pekingensis; 43–44, Thetidia kansuensis, 43, from Gansu, 44, from Tibet; 45, Thetidia smaragdaria; 46, Proteuchloris neriaria; 47, Linguisaccus subhyalina; 48, Linguisaccus minor sp. nov., paratype; 49, Chlorochromodes rhodocraspeda sp. nov., holotype; 50, Argyrocosma inductaria; 51, Protuliocnemis castalaria; 52, Protuliocnemis falcipennis; 53, Protuliocnemis candida sp. nov., paratype; 54, Protuliocnemis dissimilis sp. nov., paratype. Scale bar = 13 mm.

Figures 91–102. Male genitalia. 91, Microbaena pulchra; 92, Thetidia albocostaria; 93, Thetidia atyche; 94–95, Thetidia chlorophyllaria; 96–97, Thetidia kansuensis; 98, Thetidia smaragdaria; 99, Proteuchloris neriaria; 100, Linguisaccus subhyalina; 101, Linguisaccus minor; 102, Chlorochromodes rhodocraspeda. Scale bars = 1 mm.

Figures 132–155. Aedeagus. 132, Comibaena subdelicata; 133, Comibaena procumbaria; 134, Comibaena subprocumbaria; 135, Comibaena tenuisaria; 136, Comibaena cenocraspis; 137, Comibaena hypolampes; 138, Comibaena latilinea; 139, Comibaena swanni; 140, Comibaena birectilinea; 141, Microbaena pulchra; 142, Thetidia albocostaria; 143, Thetidia atyche; 144, Thetidia chlorophyllaria; 145, Thetidia kansuensis; 146, Thetidia smaragdaria; 147, Proteuchloris neriaria; 148, Linguisaccus subhyalina; 149, Linguisaccus minor; 150, Chlorochromodes rhodocraspeda; 151, Argyrocosma inductaria; 152, Protuliocnemis castalaria; 153, Protuliocnemis falcipennis; 154, Protuliocnemis candida; 155, Protuliocnemis dissimilis. Scale bars = 1 mm.

Figures 156–175. The male eighth segment. In Figures 156–174, the tergite is on the left and the sternite is on the right. 156, Comibaena fuscidorsata; 157, Comibaena apicipicta; 158, Comibaena ornataria; 159, Comibaena auromaculata; 160, Comibaena tancrei; 161, Comibaena nigromacularia; 162, Comibaena procumbaria; 163, Comibaena tenuisaria; 164, Comibaena cenocraspis; 165, Comibaena latilinea; 166, Thetidia chlorophyllaria; 167, Thetidia kansuensis; 168–170, Linguisaccus subhyalina; 171, Linguisaccus minor; 172, Chlorochromodes rhodocraspeda; 173, Protuliocnemis candida; 174, Protuliocnemis dissimilis; 175, tympanal organ of Pro. dissimilis. Scale bar = 1 mm.

Figures 200–210. Female genitalia. 200, Thetidia chlorophyllaria; 201, Thetidia smaragdaria; 202, Proteuchloris neriaria; 203, Linguisaccus subhyalina; 204, Linguisaccus minor; 205, Chlorochromodes rhodocraspeda; 206, Argyrocosma inductaria; 207, Protuliocnemis castalaria; 208, Protuliocnemis falcipennis; 209, Protuliocnemis candida; 210, Protuliocnemis dissimilis. Scale bars = 1 mm.