Sphaeroderma sheipaensis, Lee, 2023

Lee, Chi-Feng, 2023, Four new species of Sphaeroderma Stephens (Coleoptera, Chrysomelidae, Galerucinae, Alticini) from Taiwan, with discussion on genus boundaries based on S. flavonotatum Chujo and S. jungchani sp. nov., ZooKeys 1185, pp. 1-19 : 1

publication ID	https://dx.doi.org/10.3897/zookeys.1185.112099
publication LSID	lsid:zoobank.org:pub:5B12796B-2102-4994-8D33-53FAD1A1B763
persistent identifier	https://treatment.plazi.org/id/08FADE40-DBF7-44CB-BDFD-4B08D0138BF1
taxon LSID	lsid:zoobank.org:act:08FADE40-DBF7-44CB-BDFD-4B08D0138BF1
treatment provided by	ZooKeys by Pensoft
scientific name	Sphaeroderma sheipaensis
status	sp. nov.

Treatment

Sphaeroderma sheipaensis sp. nov.

Figs 3C View Figure 3 , 5D-F View Figure 5 , 7B, E-G View Figure 7

Types.

Holotype ♀ (TARI). Taiwan: Miaoli, Hsishihshan trail (西勢山林道), 28.VIII.2021, leg. Y.-F. Hsu. Paratype. 1♀ (TARI), Hsiaopangchih (小胖池), 28.VIII.2021, leg. Y.-F. Hsu.

Description.

Length 2.4 mm, width 1.8 mm. Body color (Fig. 5D-F View Figure 5 ) blackish-brown, head, prothorax, scutellum yellowish-brown; elytra metallic blue, metafemora blackish-brown; antenna black except four basal antennomeres yellowish-brown. Antennae filiform in females (Fig. 7B View Figure 7 ), length ratios of antennomeres I-XI 1.0:0.6:0.4:0.4:0.6:0.6:0.7:0.7:0.8:0.7:1.0, length to width ratios of antennomeres I-XI 2.9:2.2:2.2:2.0:2.5:2.5:2.3:2.3:2.5:2.2:3.4. Antennal calli transverse, with supracallinal sulci well developed. Pronotum 1.9 times wider than long, disc with fine, scattered punctures the same size as those on elytra; lateral margins almost straight; anterolateral callosity protruding forward; posterolateral callosity poorly developed. Elytra 1.1 times longer than wide, sides widely rounded; disc with punctures entirely confused; humeral calli well developed. Female genitalia: ventrite VIII (Fig. 7E View Figure 7 ) with apical part triangular, but sides slightly narrowed near apex, apical margin smooth and depressed at middle, lacking setae; disc with medial part membranous, spiculum short; gonocoxae (Fig. 7G View Figure 7 ) separated, transversely triangular, with dense, long setae along apical margins, with one slender and transverse basal sclerite; receptacle of spermatheca (Fig. 7F View Figure 7 ) moderately swollen; pump short and strongly curved, transverse wrinkles present on entire pump and extending onto half of receptacle; sclerotized proximal spermathecal duct long, with ramus oblong.

Males unknown.

Diagnosis.

Adults of Sphaeroderma sheipaensis sp. nov. have a characteristic and diagnostic color pattern (Fig. 5D-F View Figure 5 ). In addition, this new species differs from the two other Taiwanese species ( S. hsui sp. nov. and S. changi sp. nov.) based on the following combination of characters: yellowish-brown antennomeres I-IV and black antennomeres V-XI (Fig. 5D-F View Figure 5 ) [entire yellowish-brown antennae in S. hsui sp. nov. (Fig. 3 View Figure 3 )]; transverse antennal calli with well-developed supracallinal sulci (Fig. 2C View Figure 2 ) [longitudinal antennal calli with poorly delimited supracallinal sulci in S. hsui sp. nov. (Fig. 2A View Figure 2 )], triangular abdominal ventrite VIII in females with apical margin lacking setae, subapically and slightly narrowed sides (Fig. 7E View Figure 7 ) [apical margin with seven pairs of setae at medial part in S. changi sp. nov. (Fig. 6E View Figure 6 ), subapically and moderately narrowed sides in S. hsui sp. nov. (Fig. 4E View Figure 4 )]; transversely triangular gonocoxae (Fig. 7G View Figure 7 ) [longitudinally triangular gonocoxae in S. changi sp. nov. (Fig. 6G View Figure 6 )].