Thalera chlorosaria (Graeser, 1890)

Makhov, Ilya, 2023, Geometridae (Lepidoptera) of the Baikal region: identification keys and annotated catalogue with notes to DNA barcoding. Part 2. Archiearinae, Geometrinae, Sterrhinae, Zootaxa 5294 (1), pp. 1-120 : 40-41

11. Thalera chlorosaria (Graeser, 1890)

(adults Figs. 17D , 57F ; male gen. Figs. 34L–34N , 35A ; female gen. Fig. 38D )

Thalera chlorosaria: Gordeeva & Gordeev, 2007: 129 ; 2020: 67; Beljaev & Mironov, 2019: 254.

? Thalera fimbrialis , nec (Scopoli, 1763): Staudinger & Rebel, 1901: 264.

Material examined. Buryatia: Gusinoye , 1.VII.2016, 1 ♁ (GenBank ID: MW792357 ) ; Bayan, 6.VII.2016, 2 ♁ (GenBank ID: MW792360 , MW792359 ) ; M. Tasarkhay, 8.VII.2016, 1 ♀ (GenBank ID: MW792358 ) ; Tarbagatay , 13.VII.2018, 10 ♁ (GenBank ID: MW792361 , MW792362 , MW792366 , MW792368 , MW792369 , MW792371 – MW792373 , MW792375 , MW792376 ), 6 ♀ (GenBank ID: MW792363 – MW792365 , MW792367 , MW792370 , MW792374 ); same loc., 23.VII.2021, 11 ♁, 7 ♀ ; Tatarsky Klyuch, 13.VII.2020, 1 ♁ (GenBank ID: MW792411 ); I. Makhov; Ulan-Ude , 29.VII.1956, 1 ♀ , V. Kolmakova ; “ Selenga ”, 27. VI.1914, 1 ♁ (unknown collector) [ ZIN]; Petropavlovka, 27.VII.1974, 1 spm.; Novostroika, 24.VII.1976, 1 spm., A. Tarmaeva [ ISEA]; Sosnovo-Ozyorskoye , 11.VII.2007, 2 ♁; Dobo-Yenkhor, 15.VII.2008, 1 ♀ , T. Gordeeva [ IGEB].

Distribution. Siberian–Far Eastern, subboreal. In Russia T. chlorosaria inhabits Republic of Buryatia, Zabaikalsky Kray,Amurskaya Oblast, southern part of Khabarovsky Kray, Jewish Autonomous Oblast and Primorye. Outside Russia: E Mongolia, N and NE China, N and central Korea.

Hostplants: herbs and shrubs (mostly Asteraceae ), also Apiaceae , Polygonaceae , Fabaceae , Lamiaceae , Rubiaceae , Hypericaceae , Euphorbiaceae , Campanulaceae . Larvae were recorded on Prunus , Crataegus , Betula ( Beljaev 2016) .

Genetic note. There are two divergent sympatric mitochondrial lineages within Buryatian population with the minimal distance of 4.1%. No morphological differences between these lineages have been found; the mitonuclear discordance was found in these samples. At the same time, the sibling species T. fimbrialis demonstrates stable differentiation in mitochondrial COI and nuclear genes GADPH and RpS5. One of two haplogroups of T. chlorosaria were found in Southern Buryatia only and its occurrence is most likely associated with the secondary admixture of populations evolved allopatrically for a long time ( Makhov et al. 2021).

Figures

FIGURE 17. Adults of Siberian Geometrinae. A—Hemistola zimmermanni; B—H. chrysoprasaria; C—Thalera fimbrialis; D—T. chlorosaria.

FIGURE 34. Male genitalia of Siberian Geometrinae. A–C—Hemistola chrysoprasaria; D–F—H. zimmermanni; G, H— Hemithea aestivaria; I–K—Thalera fimbrialis; L–N—T. chlorosaria. A, E, G, I, M—genital segment; B, F, H, J, N—phallos; B, F—vesica everted; K—valva, dorsal view; L—dorso-lateral view of genital segment. Scale bar—1 mm.

FIGURE 35. Male genitalia of Siberian Geometrinae. A—Thalera chlorosaria; B, C—Dyschloropsis impararia; D, E, H, I—Chlorissa viridata; F, G, J—C. obliterata. A, B, D, F—genital segment; C, E, G—phallos; H–J—sternite A8. Scale bar—1 mm.

FIGURE 38. Female genitalia of Siberian Geometrinae. A—Jodis lactearia; B—J. putata; C—Thalera fimbrialis; D—T. chlorosaria; E—Dyschloropsis impararia; F—Chlorissa viridata; G—C. obliterata. Scale bar—1 mm.

FIGURE 57. Adults of some Siberian Geometrinae in live. A—Thetidia chlorophyllaria (male); B–D—H. zimmermanni (B— male, C, D—females); E—Chlorissa viridata (male); F—Thalera chlorosaria (male). Photos by Marya Dementyeva (Irkutsk).