Pyrops ducalis (Stål, 1863)

(Figs 5, 16B)

= Hotinus ducalis — Stål 1863: 576 [original description].

= Fulgora ducalis — Butler 1874: 100 [in section of species with blue-green wings, listed]; Lallemand 1963: 72 [keyed, described], pl. 10, figs. 17–19 [male genitalia illustrated].

= Laternaria ducalis — Metcalf 1947: 195 [catalogued].

= Pyrops ducalis — Nagai & Porion 1996: 24 [catalogued], pl. 13, fig. 184 [illustration]; Constant et al. 2016: 11 [recorded from Cambodia], fig. 3 F [live specimen]; Jiaranaisakul & Wonglersak 2021: 171 [catalogued], fig. 6 G [illustrated]; Constant & Pham 2022: 137–138 [listed, keyed], fig. 17 [habitus illustrated].

Diagnosis. (1) cephalic process dark red, orange ventrally and at apex (Fig. 5D–E); (2) tegmina greenish blue covered with milky white wax forming a cloudy pattern (Fig. A); (3) posterior wings pale blue or white basally, dark brown on apical margin (Fig. 5A); (4) abdomen pale brown dorsally and dark brown ventrally (Fig. 5A–B).

Mesurements and ratio. TL: ♁ (n = 3): 42.4 mm (41.8–43.3 mm); TL+process: ♁ (n = 3): 59.2 mm (55.5–62 mm); LTg/BTg = 2.59; BF/BPrH = 2.07; LPr/LF = 3.52; LPr/BPrH = 7.91.

Material examined. 1 ♁: Chanthaburi Province, Khao Khitchakut District, 21.VII.2020, K. Jiaranaisakul leg., KJ02-00142 (RBMF) ; 1 ♁: Nakhon Ratchasima Province, Mu Si District, 4.IV.2021, K. Jiaranaisakul leg., KJ02-00189 (RBMF) ; 1 ♁: Chanthaburi Province, Soi Dao District, 10.VII.2022, K. Jiaranaisakul leg., KJ02- 00307 (RBMF) .

Material examined from iNaturalist.

Chanthaburi Province: Khao Khitchakut Dist., 13°01’00.0”N 102°05’00.0”E, 4 specimens: 1 ex., 20.XII.2014, parinyaherp; 1 ex., 3.XI.2015, ian_dugdale; 2 ex., 21.VI.2020, k_jiaranaisakul; Pong Nam Ron Dist., 12°56’00.0”N 102°13’00.0”E, 1 specimen: 1 ex., 19.V.2016, ian_dugdale; Soi Dao Dist., 13°06’00.0”N 102°11’00.0”E, 2 specimens: 1 ex., 28.VII.2011, lennyworthington; 1 ex., 25.IV.2023, stefanie_de_win.

Nakhon Ratchasima Province: Pak Chong Dist., 14°26’00.0”N 101°24’00.0”E, 31 specimens: 2 ex., 17.VII.2012, markread; 1 ex., 14.VII.2015, k_jiaranaisakul; 1 ex., 13.X.2015, kingbird18; 1 ex., 29.VII.2016, naturegirlkh; 1 ex., 3.X.2016, niran_anurakpongsathorn; 1 ex., 12.X.2017, qin_huang; 1 ex., 7.VI.2018, jmaughn; 1 ex., 29.VII.2019, jiroiguchi; 1 ex., 10.VIII.2019, k_jiaranaisakul; 1 ex., 3.IV.2021, k_jiaranaisakul; 1 ex., 5.IV.2021, k_jiaranaisakul; 11 ex., 2.VII.2021, mmoraa; 2 ex., 17.VIII.2021, petereric; 1 ex., 5.IX.2021, noppawan1; 1 ex., 8.IX.2021, andaman; 1 ex., 5.VI.2022, joost_s; 1 ex., 26.VI.2022, patta-v; 1 ex., 26.VI.2022, doobird; 1 ex., 5.VI.2023, super_tz; 1 ex., 16.VIII.2023, atheist.

Prachinburi Province: Prachantakham Dist., 14°22’00.0”N 101°29’00.0”E, 1 specimen: 1 ex., 6.IX.2022, ioannism .

Distribution. Cambodia, Thailand and Vietnam (Jiaranaisakul & Wonglersak, 2021; Constant & Pham, 2022).

Notes. The specimens were collected and observed on Dimocarpus longan Lour. ( Sapindaceae) (new plant association) in Nakhon Ratchasima Province and Balakata baccata (Roxb.) Esser ( Euphorbiaceae) (new plant association) in Chanthaburi Province.