A monograph on the genus Tetraserica from the Indochinese region (Coleoptera, Scarabaeidae, Sericini)
Author
Fabrizi, Silvia
Author
Dalstein, Vivian
Author
Ahrens, Dirk
text
ZooKeys
2019
837
1
155
http://dx.doi.org/10.3897/zookeys.837.32057
journal article
http://dx.doi.org/10.3897/zookeys.837.32057
1313-2970-837-1
4A18822935804DB7B1229F131F6A0AC8
4A18822935804DB7B1229F131F6A0AC8
Tetraserica breviforceps
sp. n.
Figures 21, 47
Type
material examined.
Holotype: ♂ "Laos, Sekong Prov. ca. 12 km S Sekong TAD FAEK Waterfalls (at light) 15°14, 7'N, 106° 45, 1'E, 118m,
Jiri
Hajek
leg., 8+12.v.2010/ 207
Sericini
Asia spec." (NMPC). Paratype: 1 ♂ "Laos centr., Khammouan prov. NAKAI env. 4-8.5.1998, Route No 8, alt. 560
+/-
20 m, N17°42.8, E 105°08.9 (GPS), E Jendek & O
Sausa
leg./ coll. P
Pacholatko"
(CPPB), 1 ♂ "Laos, Sekong Prov. ca. 12 km S Sekong TAD FAEK Waterfalls (at light) 15°14, 7'N, 106° 45, 1'E, 118 m,
Jiri
Hajek
leg. 8+12.v.2010/ 207
Sericini
Asia spec." (ZFMK).
Description.
Length of body: 8 mm; length of elytra: 6 mm; maximum width: 5.6 mm. Surface of labroclypeus and disc of frons glabrous. Smooth area anterior to eye twice as wide as long. Eyes moderately large, ratio of diameter/interocular width: 0.74. Ratio of length of metepisternum/metacoxa: 1/2.08. Metatibia short and wide, ratio width/length: 1/2.44; basal group of dorsal spines of metatibia at first third of metatibial length.
Aedeagus: Fig. 21
A-C
. Habitus: Fig. 21D.
Figure 21.
A-D
Tetraserica breviforceps
sp. n. (holotype)
E-H
T. nahaeoensis
sp. n. (holotype)
I-L
T. champassakana
sp. n. (holotype) A, E, I aedeagus, left side lateral view C, G, K aedeagus, right side lateral view B, F, J parameres, dorsal view D, H, L habitus. Scale bars: 0.5 mm. Habitus not to scale.
Female unknown.
Variation.
Length of body: 8.0-9.2 mm; length of elytra: 6.0-6.5 mm; maximum width: 5.5-5.6 mm.
Diagnosis.
Tetraserica breviforceps
sp. n. differs from all other
Tetraserica
species with its short parameres and very short median phallobasal lamina, and by the left paramere having a robust (nearly half as long as paramere), subsphaerical, and apically convex dorsal lobe at its base.
Etymology.
The name of the new species (noun in apposition) is derived from the combined Latin words brevis (short) and forceps, with reference to the short parameres.