Sphaeroplotina hainanensis Miyatake 1969
Creators: name: Tong, Junbo
name: Chen, Jianjun
name: Zhang, Xiaoning
name: Chen, Xiaosheng
name: Wang, Xingmin
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Coccinellidae
Sphaeroplotina
Sphaeroplotina hainanensis

description: Sphaeroplotina hainanensis Miyatake, 1969
(Figs. 1, 2, 5a, 6)
Chinese name: ÑḢṞÖüm
Sphaeroplotina hainanensis Miyatake, 1969: 204; Miyatake, 1994: 281; Ren et al., 2009: 29
Diagnosis. This species can be distinguished from other species of Plotinini by the extraordinary pattern on the elytra (Figs 1 a–c). The structures of the male genitalia are similar to S. varimarginata sp. nov., but can be distinguished from the later by having penis guide which is slightly longer than parameres, and stout in ventral view with widest part about 1.52× of its basal width.
Description. TL: 3.75–4.13 mm, TW: 3.30–3.59 mm, TH: 1.97–2.06 mm, TL/TW: 1.12–1.19, PL/PW: 0.25– 0.33, EL/EW: 0.94–1.02.
Body moderately large, broadly oval, moderately convex, shining and glabrous (Figs 1 a–d). Head reddish brown with maxillary palpi and labrum yellowish brown (Figs 1 c–d). Pronotum reddish brown, with a transverse black spot at base, scutellar shield black (Figs 1 a–c). Ground color of elytron reddish brown, with two large yellow spots at base and apex; each elytron with six dark spots as show in Figure 1a (Fig. 1a). Ventral surfaces yellow to black; discrimen of metaventrite, area around coxae and external border of epipeura dark (Fig. 1d). Legs yellowish brown (Figs 1d, 1 l–m).
Head moderately small, 0.38× of elytral width (EW/HW=2.62); frontal surface of head capsule slightly convex; punctures on frons fine, with long setae in punctures; eyes small, broadly oval, widest interocular distance 0.57× width of head (Fig. 1c). Pronotum 0.61× as wide as elytra (EW/PW=1.65), pronotal punctures fine, similar to those on head. Punctures on elytra moderately large, irregular, and obviously larger than those on pronotum (Fig. 1a).
Surface of prosternum slightly shagreened, punctures moderately large, with sparse short setae. Mesoventrite slightly shagreened, punctures fine, with several short setae. Metaventrite broad, punctures fine but distinctly larger near discrimen, with short sparse setae (Fig 1d). Abdominal postcoxal lines complete, almost touching posterior margin of ventrite 1 (Fig. 1k).
Male genitalia: Penis long and slender, penis capsule with short outer process and long inner one, apex of penis pointed (Figs 2 a–b). Penis guide in lateral view short and stout, widest at base, tapering to apex, apex pointed; parameres arcuate, slightly longer than penis guide, sparsely setose on apical and inner surfaces, and with a tuft of long setae at their bases (Fig. 2c); penis guide in ventral view stout, widest at basal 2/5, distinctly narrowed at base, with widest part about 1.52× of basal width, apically rounded with a small protuberance (Fig. 2d).
Female genitalia: Coxites elongate, triangular; styli distinct with terminal setae (Fig 2f); spermatheca with a subrounded nodulus and a slender cornu (Fig. 2e).
Specimens examined. China: 1♂, Wuzhishan National Natural Reserve, Hainan, 24.VII.2006, Wang XM leg (SCAU); 1♀, Jianfengling National Natural Reserve, Hainan, 1983, Huang YX leg (SCAU).
Distribution. China (Hainan) (Fig. 6).
Remarks. This species is similar to Paraplotina tamdaoensis Hoàng, 1982 in structures of the male genitalia, but can be distinguished from the later by the small protuberance at the apex of penis guide in ventral view (Fig 2d). In P. tamdaoensis, penis guide in ventral view apically rounded without protuberance (Hoàng 1982; Wang et al. 2012).
description: Published as part of Tong, Junbo, Chen, Jianjun, Zhang, Xiaoning, Chen, Xiaosheng & Wang, Xingmin, 2020, A contribution to the genus Sphaeroplotina Miyatake (Coleoptera, Coccinellidae Plotinini), pp. 419-428 in Zootaxa 4859 (3) on page 421, DOI: 10.11646/zootaxa.4859.3.7, http://zenodo.org/record/4413224