Taxonomic review of Mycomystes Gorham, 1888 (Coleoptera: Erotylidae: Tritomini)
Author
Pecci-Maddalena, Italo S. C.
Author
Skelley, Paul
Author
Lopes-Andrade, Cristiano
text
Journal of Natural History
2021
2021-05-14
54
47 - 48
3075
3102
http://dx.doi.org/10.1080/00222933.2021.1890254
journal article
10.1080/00222933.2021.1890254
1464-5262
5406215
EE3E3844-D6E5-45AB-8FA8-44C8891CB226
Mycomystes nigriventris
Pecci-Maddalena and Lopes-Andrade, 2020
Figure 49–51
,
55
Mycomystes nigriventris
Pecci-Maddalena and Lopes-Andrade, 2020: 579
[description].
Holotype
(
DZUP
;
Figure 49–51
)
Mycomystes nigriventris
holotype
, sex undetermined, specimen not dissected (
DZUP
), ‘
ColeÇão
M
.
Alvarenga
[printed]\
Capão do Imbuia
, CURITIBA,
Paraná
,
Brasil
,
II–1966
, R
.
Lange
leg
. [printed],\DZUP 235198 [printed]\
HOLOTYPUS
Mycomystes nigriventris
Pecci- Maddalena and Lopes-Andrade [printed, red paper]’.
Other specimens examined
See Pecci-Maddalena and Lopes-Andrade (2020).
Figure 55.
Geographical distribution of species of
Mycomystes
Gorham, 1888
.
Mycomystes apicalis
(
Lacordaire, 1842
)
,
Mycomystes coccineus
(
Lacordaire, 1842
)
, (Diamond)
Mycomystes melanophthalmus
(
Duponchel, 1825
)
,
Mycomystes nigriventris
Pecci-Maddalena and Lopes-Andrade, 2020
and
Mycomystes peruvianus
(
Kirsch, 1876
)
.
Diagnosis
Body oval, TL =
4.27–6.12 mm
(5.41 ±
0.59 mm
, n = 9) and clypeus with marginal bead very fine and complete across apex.
Mycomystes nigriventris
resembles its Mexican congener
M. ferrugineus
in the oval body shape and dilated tibiae. It differs in the black ventral colouration (yellowish to reddish-brown in
M. ferrugineus
), elytral punctation with rows of punctures uniformly longitudinal and not confluent (in
M. ferrugineus
these punctures are more irregular and confluent at disc), the lack of a conspicuous angle at the outer side of protibiae (present in
M. ferrugineus
) and the occurrence in the southern portion of the neotropics (while
M. ferrugineus
occurs in the northern portion). Male genitalia with head of penile flagellum horseshoe-shaped, with the anterior borders only shallowly fused medially. Female genitalia with vaginal process present, narrowed and elongate to the level of gonostyli.
Distribution
South and Southeast
Brazil
(
Figure 55
).
Natural history
Mycomystes nigriventris
was recorded once in association with
Pleurotus
sp. (Pleurotaceae)
(Pecci-Maddalena and Lopes-Andrade 2020).