Serangium Blackburn, 1889

Huang, Chu-Yang, Zeng, Li-Ling, Fan, Wu-wei, Lin, Ping, Dong, Qi-Jin, Su, Yu-Long & Wang, Xing-Min, 2024, A new species of the genus Serangium Blackburn (Coleoptera, Coccinellidae) from China, with description of the immature stages, ZooKeys 1210, pp. 197-206 : 197-206

Serangium Blackburn, 1889

Serangium Blackburn, 1889: 187, 209. Type species, monotypy: Serangium mysticum Blackburn, 1889.

Serangium : Sicard 1909: 150, 151; Chapin 1940: 268; Miyatake 1961: 50; Sasaji 1971: 52; Pang and Mao 1979: 27; Miyatake 1994: 238; Ślipiński and Burckhardt 2006: 39; Ślipiński 2007: 53; Wang et al. 2011: 33 .

Semichnoodes Weise, 1892: 15. Type species, monotypy: Semichnoodes kunowi Weise, 1892. Synonymized by Weise 1908: 13.

Catana Chapin, 1940: 266. Type species, original designation, Catana clauseni Chapin, 1940. Synonymized by Ślipiński and Burckhardt 2006: 39

Diagnosis.

Body minute, length ranging 1.0– 2.5 mm, hemispherical, with head resting closely against prosternal anterior margin at rest; dorsum glossy, bearing sparse, long, thin setae. Mandible small, triangular, with single apical tooth and reduced mola (Fig. 2 g ); maxillary palps geniculate, palpomeres 2 and 3 closely fitting along stipes, and terminal maxillary palpomere conical or barrel-shaped, always longer than wide (Fig. 2 e ). Antenna composed of nine antennomeres, antennomere 1 club-shaped and antennomere 3 moderately to strongly elongate (Fig. 2 h ).

Pronotum short, strongly transverse (Fig. 2 d ). Scutellum large, triangular. Prosternum strongly protruding medially, forming a broad lobe partly covering mouthparts; prosternal process subtruncate apically, broad. Femora, particularly profemora, broad and flat, closely fitting into depressions on ventral surface and shielding tibiae and tarsi. Elytra smooth, strongly convex, without visible punctures; epipleura extending completely to apex with well-defined cavities accommodating tips of meso- and metafemora (Fig. 2 a – c ).

Abdomen with ventrites 1 and 5 notably longer than ventrites 2–4 together (Fig. 3 a ). Postcoxal line on abdominal ventrite 1 complete, extending to metanepisternum, without associated pits or pores (Fig. 3 a ).

Figures

Figure 2. Serangium xinpingensis sp. nov. a – c habitus photos: a dorsal view b lateral view c front view d prothorax, ventral view e maxilla, ventral view f labium, ventral view g mandible, dorsal view h antenna, dorsal view i posterior leg, ventral view. Scale bars: 0.2 mm (a – d, i); 0.1 mm (e, h); 0.05 mm (f, g).

Figure 3. Genitalia of adults of Serangium xinpingensis sp. nov. a abdomen, ventral view b – d male genitalia: b penis, lateral view c tegmen, ventral view d tegmen, lateral view e – f female ovipositor: e spermatheca f coxites, ventral view. Scale bars: 0.2 mm.