Taxonomy of southern California Erebidae and Noctuidae (Lepidoptera) with descriptions of twenty one new species
Author
Mustelin, Tomas
text
Zootaxa
2006
1278
1
47
journal article
10.5281/zenodo.273509
899ffdc9-d0a8-4d5d-946e-a7cb59be3020
11755326
273509
Lasionycta sala
Troubridge and Mustelin
,
NEW SPECIES
Figs. 19
,
59
a, and 59b, 80
Type
material.
Holotype
:
Male, San Luis Obispo County, San Simeon Dunes [
1.6 km
N. of San Simeon Pt.],
1 November 1978
, F.
Sala
.
Paratypes
:
29 males
and
18 females
. San Luis Obispo County: Same locality and collector as
holotype
, emerged
10 May 1986
(
1 female
), emerged
17 June 1984
(
1 female
), emerged
10 May 1986
(
1 female
), emerged
17 June 1984
(
1 female
), emerged
1 July 1984
(
1 male
), emerged
7 July 1980
(
1 male
), emerged
17 July 1984
(
1 female
), emerged
18 July 1983
(
1 male
), emerged
19 July 1980
(
1 female
), emerged
24 July 1984
(
2 males
), emerged
2 August 1985
(
1 male
,
1 female
), emerged
2 August 1998
(
1 female
),
4 August 1985
(
1 male
,
1 females
), emerged
4 August 1982
(
1 male
), emerged
19 August 1985
(
1 female
), emerged
9 September 1993
(
3 males
), emerged
21 September 1999
(
1 female
), emerged
5 October 1988
(
2 males
),
9 October 1977
(
1 male
), emerged
10 October 1999
(
1 male
),
19 October
, 1992, (
2 males
,
1 female
),
22 October 1982
(
2 males
,
1 female
), emerged
22 October 1990
(
1 female
),
27 October 1977
(
1 male
),
27 October 1990
(
1 male
), emerged
27 October 1999
(
1 male
,
1 female
), emerged
29 October 1984
(
1 male
,
1 female
),
1 November 1978
(
3 males
,
1 female
); San Luis Obispo Dune Lakes,
8 km
southeast of Oceano,
2 May 1992
(
1 male
,
1 female
);
25 May 1993
(
1 male
),
29 May 1993
(
1 male
), R. Robertson.
Holotype
and nine
paratypes
deposited in
CNC
, other
paratypes
in the collections of F.
Sala
, T. Mustelin, and J. Troubridge.
Etymology.
This species is named in honor of Frank
Sala
, who collected and reared most of the
type
series and who has contributed to the museum collections of
Noctuidae
.
Diagnosis.
A member of the
insolens
group, which includes
L. insolens
(Grote, 1874)
,
L. arietis
(Grote, 1879)
,
L. ochracea
(Riley, 1892)
,
L. wyatti
(Barnes & Benjamin, 1926)
and
L. sala
. This group occurs on the Pacific beaches of North
America
and is characterized by the digitus of the male genitalia, which is reduced to form a plate on the surface of the valve, and by the pointed ovipositor lobes and spiralshaped appendix bursae of the female. Previously,
L. sala
has been confused with
L. insolens
and
L. ochracea
, which occur on beaches north of the
Santa Lucia
Range, between Carmel and San Francisco.
Lasionycta sala
is easily separated from
L. ochracea
by the powdery appearance of the forewing, indistinct claviform spot, and fuzzy orbicular (
Fig. 18
a) and reniform (
Fig. 18
b) spots. The forewing of
L. ochracea
is smooth beige, not powdery, with the spots crisp and distinct. The male antenna of
L. sala
is biserrate, similar to that of
L. insolens
, and about half the width of the weakly bipectinate antenna of
L. ochracea
. The forewing of
L. insolens
ranges from whitish to grey brown. Graybrown forms of
L. insolens
could be confused with
L. sala
, but are easily separated from them by range; however, internally, the subbasal constriction of the male vesica of
L. sala
is absent in
L. insolens
, and the ovipositor of
L. sala
angles more on the ventral margin to a dorsoapical point; that of
L. insolens
tapers evenly on the dorsal and ventral margins to a more central point.
Description.
Male antenna biserrate, that of female filiform. Labial palps covered by white, laterally also by brown scales. Eye with long hairs. Head, prothoracic collar, and thorax light gray brown, abdomen light gray brown with darker dorsal stripe. Forewing with grayish brown, powdery appearance, the result of a dusting of light yellow, white, dark brown, and light gray brown scales; veins edged with white scales. Basal dash dark brown, dusted and forward lined by light yellow scales, basal line obscure, sagittate, brown, edged outwardly with white scales, antemedial line obscure, white, edged outwardly with dark brown scales, orbicular spot light horizontally oval, gray brown, encircled by diffuse ring of white and light yellow scales, reniform spot filled with light gray brown scales, darker brown on posterior edge, encircled by diffuse ring of white and light yellow scales, median area concolorous with basal and subterminal areas, postmedial line obscure, dark brown, edged outwardly with white or light yellow scales, claviform spot very obscure or absent, submarginal line a series of diffuse, dark brown triangles. Marginal line thin, dark brown, interrupted at veins where dark gray brown fringe shows pale spots. Hindwing pale with suffusion of light brown scales, particularly submarginally, postmedial line light gray brown, subterminal area paler with thin, darker brown terminal line; fringe offwhite. Under surface of forewing pale gray brown with darker brown postmedial line. Hindwing underside pale graybrown with small discal dot.
Male genitalia
(
Figs 59
a and 59b): Uncus pointed, bends 90 degrees downward; juxta shieldlike; sacculus fine with anterior point; valve long and slender with angle on outer margin; cucullus broad, sharply bent at dorsal and ventral angles with corona present on distal margin; clasper elongate, bends medially, a flaplike process arises from base of clasper; digitus forms a flattened plate on surface of valve behind posterior clasper; aedeagus rounded and straight; everted vesica forms a long tube with subbasal constriction, basal half bends slightly to the left, then sweeps abruptly to the right and then anteriorly, distal half projects to right, bananashaped, with ventral ribbon of dense cornuti, diverticulae absent from vesica.
Female genitalia
(Fig. 80): Ovipositor lobes drawn to dorsoapical point, numerous setae point forward; ductus bursae long (about as long as corpus bursae), sclerotized, slowly widens and angles to right anteriorly, wrinkled at junction of corpus bursae; corpus bursae oval, bends to left, signa absent; appendix bursae arises from left posterior corpus bursae, spirals down and forward, completing one full revolution.
Distribution and habitat.
This species appears to be endemic to coastal San Luis Obispo County in southcentral California, where adults were collected in May, September, and October on the outer coastal dunes. Several specimens were reared on lupines by Frank
Sala
.