Observations of plume moths on North Andros Island, Bahamas, and notes on new records and species previously recorded from the Bahamas (Lepidoptera: Pterophoridae)
Author
Matthews
Author
Miller, Jacqueline Y.
Author
Mark
Author
Goss, Gary
text
Insecta Mundi
2012
2012-06-15
2012
236
1
12
journal article
10.5281/zenodo.5174334
1942-1354
5174334
Adaina perplexus
(Grossbeck, 1917)
Fig. 2e
,
5a,b
,
6
a-d
Material Examined.
Bahamas
:
North Andros
, Stafford Creek (Love at First Sight motel), 24.901449°, -77.936089°
31.x.2011
D. Matthews, J. Y. Miller, M. Simon, G. Goss, ex.
Melanthera aspera
(
1 male
, slide
DM
1625) [
MGCL
].
Diagnosis.
Wingspan 11.0–14.0 mm. This species is recognized by the pale gray ground color of the forewings with scattered dark scales along the costa and especially in the second forewing lobe. Dark brown to black spots mark the terminus of the radial veins on the first lobe with that of the first vein extended as a dark dash along the costa. The species is easily mistaken for pale or worn specimens of
Adaina ambrosiae
but can be distinguished by the smaller dark spot at the forewing cleft base which does not extend medially. The costal dash at the first radial vein is also proportionally longer than in
A. ambrosiae
.
The male genitalia (
Fig. 5
) have distinct saccular process with a flattened blade-like base and narrow curved distal portion as opposed to a more lobed process in
A. ambrosiae
.
Several characters distinguish the female genitalia from
A. ambrosiae
, in particular, a pair of elongate signa.
Life History.
The larva (
Fig. 6a,b
) found on
North Andros
was feeding externally on the leaves of
Melanthera aspera
(Jacq.) Small
[
Asteraceae
]. Feeding damage was present from other larvae but only one individual of
A. perplexus
was found. The larval host for this species was previously unknown. Larvae of
Adaina ambrosiae
(Murtfeldt)
also feed on
Melanthera
Rohr
along with numerous other composites. The larvae of
A. perplexus
have middorsal setae present on the prothorax that are absent in
A. ambrosiae
. Another distinguishing feature is the exceedingly long lateral setae in
A. ambrosiae
, which exceed twice the segment width. In contrast, the lateral setae of
A. perplexus
do not exceed the segment width. The pupa (
Fig. 6c,d
) of
A. perplexus
is generally similar to that of
A. ambrosiae
but with shorter setae overall and with the spiracles on the second abdominal segment darkly sclerotized and surrounded by a dark sclerotized patch.
Distribution.
Bahamas
:
North Andros
;
Cuba
: Varadero (
Gielis 2011
);
Trinidad
;
United States
:
Florida
: Monroe and Sarasota counties.
Figure 6.
Larva and pupa of
Adaina perplexus
:
a)
larva (prepupa), dorsal view;
b)
larva (prepupa) lateral view;
c)
pupa, dorsal view;
d)
pupa, lateral view.
Comments.
While
A. ambrosiae
has not been recorded from
the Bahamas
, it occurs in Florida,
the Dominican
Republic, and elsewhere in the West Indies, thus making it necessary to check the genitalia of suspected
A. perplexus
specimens for positive identification. As more material becomes available and larvae and pupae can be preserved, descriptions and additional characters may help distinguish the immatures of the two species.