Revision of the genus Miridiba Reitter, 1902 (Coleoptera, Scarabaeidae, Melolonthinae): genital morphotypes and new taxonomic data
Author
Gao, Chuan-bu
D260A269-8B1F-41CE-AD17-703E2BBE07F3
Guangdong Key Laboratory of Animal Conservation and Resource Utilization, Guangdong Public Laboratory of Wild Animal Conservation and Utilization, Institute of Zoology, Guangdong Academy of Sciences, 105 Xingang Road W., Guangzhou 510260, China. Unidad de Protección Vegetal. Centro de Investigación y Tecnología Agroalimentaria (CITA) e Instituto Agroalimentario de Aragón (IA 2) (CITA-Universidad de Zaragoza), Avenida Montañana, 930. 50059 Zaragoza, Spain. & Buzh.
Buzh.Gao@msn.com
Author
Coca-Abia, María Milagro
AA630400-F786-448F-952E-DC786CA8644A
mcoca@aragon.es
text
European Journal of Taxonomy
2021
2021-05-12
749
1
94
http://dx.doi.org/10.5852/ejt.2021.749.1355
journal article
6634
10.5852/ejt.2021.749.1355
83109e54-596a-4be0-ac2c-c4e1702cfb8a
2118-9773
4770293
25FD5744-861D-45E4-B6AD-350716AA29BF
Miridiba obscura
Itoh, 1995
Miridiba obscura
Itoh, 1995: 199
.
Miridiba tuberculipennis obscura
Itoh, 1995: 199
(
type
loc.: Doi Suthep,
Thailand
).
Miridiba obscura
–
Gao
et al
2018: 14
, figs 5a–c, 6 (combination;
type
material); 2019: 461 (species list; in key).
Diagnosis
External morphology of adult (
Itoh 1995
;
Gao
et al
. 2018
). Dorsal surface glabrous. Clypeus with anterior edge arcuate. Frontal carina sharp and developed. Pronotum densely punctate; anterior margin widely flanged; lateral margins smooth, elevated laterally at anterior third. Scutellum densely punctate. Elytral surface glabrous and punctate; epipleuron with setae at basal half. Meso- and metatibia with transverse carina interrupted at middle, inner margin of metatibial dorsal surface with spines. Pygidium irregularly punctate with scattered punctures dorsally, conspicuous setae on apex; apical margin moderately raised. Ventrite 5 depressed at posterior half. Male genitalia: parameres without pubescence, dorsal branches starting slightly below collum, long, thin and curved downwards; ventral branches widened, apices bent outwards ninety degrees.
Remarks
Itoh (1995)
described the subspecies
Miridiba tuberculipennis obscura
base on a male
holotype
, a female
allotype
and thirteen
paratypes
(
three males
and
ten females
) from
Thailand
and
Laos
. According to
Itoh (1995)
, the subspecies is distinguishable by robust and shorter parameres branches of male genitalia and variability in intensity of coloration of elytral tubercles. After studying
two paratypes
deposited in MFNB and additional non-type specimen from
China
,
Gao
et al
. (2018)
elevated this subspecies to species rank as
Miridiba obscura
according to parameres and clypeus shape (
Gao
et al
. 2018
: fig. 5). Male genitalia indicates that this species is characteristic of the morphotype I “
Trichophora
”. Hence, this species is included in this genital morphotype.
Distribution
China
(
Yunnan
),
Thailand
(
Chiang Mai
, Kanchanoburi,
Chaiyaphum
),
Laos
(
Xiangkhouang
).