Chlorissa obliterata (Walker, 1863)

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 : 42

14. Chlorissa obliterata (Walker, 1863)

(adults Figs. 17D , 57E ; male gen. Figs. 35F, 35G, 35J , 36E, 36F, 36K, 36L ; female gen. Fig. 38G )

Chlorissa viridata , nec (Linnaeus, 1758): Gordeeva & Gordeev, 2007: 129; 2020: 66.

Chlorissa obliterata: Makhov & Lukhtanov, 2021: 839 .

Material examined. Buryatia: Gegetuy, 11.VII.2016, 1 spm.; M. Tasarkhay, 8.VII.2016, 3 spms.; same loc., 7.VII.2016, 3 spms.; Senokosny, 26. VI.2016, 2 spms.; Mostovka, 28. VI.2015, 6 ♁; same loc., 26. VI.2016, 1 ♁ (GenBank ID: OK641943 ), I. Makhov; Ulan-Ude, 23. VI.1996, 1 ♀; same loc., 19. VI.1959, 1 ♀; same loc., 11. VI.1956, 1 ♁, V. Kolmakova [ ZIN]; Gartop, 26–27. VI.2016, 2 ♁ (GenBank ID: OK156233 , OK641942); Dobo-Yenkhor, 15.VII.2008, 2 ♁ (GenBank ID: OK641946 ); same loc., 2–3. VI.2009, 2 ♁ (GenBank ID: OK641944 , OK641945), T. V. Gordeeva [ IGEB].

Distribution. Siberian–Far Eastern, subboreal. Republic of Buryatia,?Zabaikalsky Kray, Amurskaya Oblast, Jewish Autonomous Oblast, southern part of Khabarovsky Kray, Primorye, Sakhalin Isl., Kuriles (Kunashir Isl.). Outside Russia in China (NE, N, Central, SW and SE), Korea, Japan (Hokkaido, Honshu, Shikoku, Kyushu, Tsushima, Okinawa Isl.).

Hostplants: Solidago , Vicia ( Beljaev 2016) .

Genetic note. The sibling species C. viridata and C. cloraria (Hübner, 1813) share their barcodes and sometimes present a problem for morphological identification. Hausmann and co-authors (2011, 2013) suppose that this species pair may represent a very recent speciation event whose slight, inconsistent morphological divergence is accompanied by a lack of differentiation at COI. Unlike the species pair Chlorissa viridata — C. cloraria , C. obliterata differs from them in the sequence of its DNA barcode and also, as we have shown ( Makhov & Lukhtanov 2021), in the structure of male genitalia. Hence, this species may be reliably distinguished at least by male genitalia structure.

Figures

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

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 36. Male genitalia of Siberian Geometrinae. A–D, I, J—Chlorissa viridata; E–H, K, L—C. obliterata. A, B, E, F—vinculum, lateral view; C, D, G, H—phallos; I–L—left valva. 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).