Gonioctena (Brachyphytodecta) fulva (Motschulsky, 1861)

Lee, Chi-Feng & Hsieh, Chia-Hung, 2022, Integrative taxonomy of the leaf-beetle genus Gonioctena Chevrolat, 1836 in Taiwan (Coleoptera, Chrysomelidae, Chrysomelinae, Gonioctenini) reveals new synonymies and one new species, ZooKeys 1120, pp. 1-46 : 1

Gonioctena (Brachyphytodecta) fulva (Motschulsky, 1861)

Figs 8D-F , 22

Spartophila fulva Motschulsky, 1861: 41 (China: Heilongjiang).

Phytodecta fulva : Kraatz 1879: 136 (catalogue of Heilongjiang); Heyden 1887: 262 (Korea); Weise 1893: 1127 (key); Chûjô 1941: 74 (Korea).

Phytodecta (s. str.) fulvus : Weise 1916: 177 (Catalogue); Chen 1935: 127 (catalogue)

Phytodecta fulvus : Winkler 1930: 1294 (catalogue).

Gonioctena (Brachyphytodecta) fulva : Gressitt & Kimoto, 1963: 364 (China: Jilin, Sichuan, Fujian, Zhejiang, Russia: Siberia); Takizawa 1980: 5 (Korea); Lee and An 2001: 101 (Korea); Cho and Lee 2008: 105 (Korea); Kippenberg 2010: 432 (China: Guandong, Hubei, Jiangxi; Russia: East Siberia, Far East); Yang et al. 2015: 52 (China: Hebei, Shanxi, Jiangsu, Hunan).

Gonioctena fulva : Takizawa 1985: 6 (Korea); Sergeev 2019: 14 (Russia: Popov Island).

Types.

Lectotype ♀ (here designated, ZMUM): "Type [h, w] // Amur. [p, r] // Spartophila / Spartophila fulva Motsch / Amur. mu. [h, w] // LECTOTYPUS / Spartophila fulva / Motschulsky, 1861 / des. H.W. Cho 2014 [p, r] // (Russian letters) // No ZMMU Col 03055 / Zool. Mus. Mosq. Univ. / (Mosquae, ROSSIA) / ex coll. V. I. Motschulsky [p, pink label]". The paralecrotype it is badly damaged, and its internal parts are destroyed by dermestids: " Spartophila / Spartophila fulva Motsch. / fl. Amur. [h, w] // PARALECTOTYPUS / Spartophila fulva / Motschulsky, 1861 / des. H.W. Cho 2014 [p, r]. The lecotype and paralectotype were designated in Cho’s dissertation (2016), but not published.

Other material (n = 17).

China. Heilongjiang: 1♂ (NMHUK), Erlungshan , 29.V.1966, leg. P. M. Hammond ; 1♀ (NMHUK), Habrin City (哈爾濱市), 10.VI.1950 ; 5♂, 1♀ (NMHUK), same but with “22.VI.1952”; 1♂, 1♀ (NMHUK), same but with “29.VI.1952”; North Korea. 2♂ (TARI), Husen-Valley, Kankyo-Nando , 14.VII.1937, leg. Y. Yano ; 5♂, 2♀ (TARI), Mt. Myoko (= Mt. Myohyang , 妙香山), 25.VII.1937, leg. M. Yamada ; South Korea. 1♀ (TARI), Suigen , Keiki-Do, 3.VI.1933, leg. D. Okamoto ; Russia Far East . 1♀ (MNHUK), Primorskii krai Lazovski Zapovehik , 3-14.V.2001, leg. M. Quest.

Redescription.

Length 4.3-5.0 mm, width 2.8-3.5 mm. Body color (Fig. 8D-F ) black; antennomeres I-IV, pronotum and elytra yellowish brown. Antennae (Fig. 22A ) with antennomere III-V slender, VI slightly swollen, VII and VIII moderately swollen, IX and X strongly swollen, XI elongate oval, length ratios of antennomeres I-XI 1.0: 0.5: 0.5: 0.4: 0.4: 0.3: 0.4: 0.4: 0.5: 0.5: 0.7, length to width ratios of antennomeres I-XI 2.5: 1.9: 2.8: 2.2: 1.6: 1.0: 1.1: 1.0: 1.0: 1.0: 1.5. Pronotum 2.2-2.3 × wider than long, lateral margins widest at base, convergent anteriorly, anterior angles strongly produced. Anterior and lateral margins bordered, lateral margins barely visible in dorsal view. Trichobothria absent on both anterior and posterior angles. Disc covered with sparse fine punctures and mixed with finer punctures; both sides covered with much larger, denser punctures. Scutellum distinctly wider than long, narrowed posteriorly. Elytra 1.2 × longer than wide; lateral margins slightly wider posteriorly, widest near middle; humeral calli well developed; disc covered with regular coarse punctures arranged into single stria; interspaces covered with fine, sparse punctures. Hind wing well developed. Aedeagus (Fig. 22B, C ) with apical process slender but short in dorsal view, 0.2 × as long as aedeagus; lateral margins slightly narrowed in basal 1/3; moderately curved in lateral view; endophallic sclerite extremely elongate. Gonocoxae (Fig. 22D ) wide, apical margin irregular, with several long setae along apical margins. Ventrite VIII (Fig. 22E ) transverse, with several long setae along outer margin. Receptacle of spermatheca (Fig. 22F ) slightly swollen, not separated from pump; pump long and curved; sclerotized proximal spermathecal duct moderately short.

Diagnosis.

Adults of Gonioctena (Brachyphytodecta) fulva are similar to yellowish brown adults of G. (B.) scutellaris but differ in possessing a black head, thoracic and abdominal ventrites (Fig. 8E ) (yellowish brown head, thoracic and abdominal ventrites in G. (B.) scutellaris (Fig. 8B )) and short apical process of aedeagus (Fig. 22B ) (extremely elongate apical process of aedeagus in G. (B.) scutellaris (Fig. 10B )).

Distribution.

China, Korea, Russia.

Figures

Figure 8. Habitus of Gonioctena (Brachyphytodecta) scutellaris Baly and G. (B.) fulva (Motschulsky) A G. (B.) scutellaris, typical form, dorsal view B ditto, ventral view C same species, color variation, syntype of G. dichroa Fairmaire D G. (B.) fulva, dorsal view E ditto, ventral view F ditto, lateral view.

Figure 10. Diagnostic characters of Gonioctena (Brachyphytodecta) scutellaris Baly A antenna B aedeagus, dorsal view C aedeagus, lateral view D gonocoxae E abdominal ventrite VIII F spermatheca.

Figure 22. Diagnostic characters of Gonioctena (Brachyphytodecta) fulva (Motschulsky) A antenna B aedeagus, dorsal view C aedeagus, lateral view D gonocoxae E abdominal ventrite VIII F spermatheca.