A new species of the genus Serangium Blackburn (Coleoptera, Coccinellidae) from China, with description of the immature stagesAuthorHuang, Chu-Yang0000-0001-5943-7088College of Plant Protection, South China Agricultural University, Guangzhou 510642, ChinaAuthorZeng, Li-Linghttps://orcid.org/0009-0007-9858-0638College of Plant Protection, South China Agricultural University, Guangzhou 510642, ChinaAuthorFan, Wu-weiEngineering Research Center of Biological Control, Ministry of Education, South China Agricultural University, Guangzhou, 510642, ChinaAuthorLin, PingEngineering Research Center of Biological Control, Ministry of Education, South China Agricultural University, Guangzhou, 510642, ChinaAuthorDong, Qi-JinEngineering Research Center of Biological Control, Ministry of Education, South China Agricultural University, Guangzhou, 510642, ChinaAuthorSu, Yu-LongEngineering Research Center of Biological Control, Ministry of Education, South China Agricultural University, Guangzhou, 510642, ChinaAuthorWang, Xing-MinCollege of Plant Protection, South China Agricultural University, Guangzhou 510642, ChinatextZooKeys20242024-08-231210197206journal article30168610.3897/zookeys.1210.129040b809a33b-55f6-4ddd-bddf-83c8ed06f758DA3F199E-FF14-4D13-A779-87CAB9A98B9DSerangiumBlackburn, 1889SerangiumBlackburn, 1889: 187
, 209. Type species, monotypy:
Serangium mysticumBlackburn, 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
.
SemichnoodesWeise, 1892: 15
. Type species, monotypy:
Semichnoodes kunowiWeise, 1892
. Synonymized by
Weise 1908: 13
.
CatanaChapin, 1940: 266
. Type species, original designation,
Catana clauseniChapin, 1940
. Synonymized by
Ślipiński and Burckhardt 2006: 39Diagnosis.
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
).
Serangium xinpingensissp. 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
).
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
).
Genitalia of adults of
Serangium xinpingensissp. 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.