Revision of some types of North American aleocharines (Coleoptera: Staphylinidae: Aleocharinae), with synonymic notes
Author
Gusarov, Vladimir I.
text
Zootaxa
2003
2003-11-17
353
1
1
134
https://biotaxa.org/Zootaxa/article/view/zootaxa.353.1.1
journal article
5458
10.11646/zootaxa.353.1.1
740af13a-ed5c-40d0-b0c1-8d3fd2b92f56
11755334
5019783
Dalotia
Casey, 1910a
(
Fig.
55
in
Yosii & Sawada 1976
;
Figs.
125–126
in this paper)
Dalotia
Casey, 1910a: 106
(as subgenus of
Dimetrota
;
type
species:
Dimetrota
(
Dalotia
)
pectorina
Casey, 1910a
, by original designation).
Atheta
(
Dalotia
)
:
Bernhauer & Scheerpeltz, 1926: 662
(as synonym of
Atheta
(
Dimetrota
)).
(Other references are omitted)
Diagnosis.
Dalotia
can be recognized by the combination of the following characters: body broad; sensilla
a
of epipharynx long; antennal article 2 as long as article 3, articles 4– 10 slightly elongate or subquadrate; ligula with narrow base and split apically; labial palpus with setae, and present; ligula with two long setae; hypopharynx with long setae; infraorbicular carina complete, pronotum strongly transverse, with microsetae directed anteriad along the midline; in lateral portions of the disc microsetae directed laterad and obliquely posteriad (
Type
I,
Benick & Lohse 1974
); pronotal macrosetae long; pronotal hypomera fully visible in lateral view; medial macroseta of mesotibia strong, longer than tibial width; mesothoracic process narrow; tarsal formula 455; metatarsal segment 1 as long as segment 2; with one empodial seta, shorter than claws; abdominal terga 3–5 with transverse basal impression; medial lamellae of internal sac present; copulatory piece with pointed apex.
Dalotia
differs from
Atheta
in having its ligula with two long setae (
Fig. 125
) and long hypopharyngeal setae (
Fig. 126
).
Discussion.
The
type
species of
Dalotia
is
Dimetrota pectorina
Casey, 1910a
by original designation. Casey did not specifically state in his description of
Dalotia
that
Dimetrota pectorina
was the
type
species of
Dalotia
; however, while designating the
type
species of
Noverota
Casey, 1910a
in the same paper, Casey stated (1910a, p. 90): “The first species may be regarded as the
type
, as in all other cases where the
type
is not specifically named”.
Dimetrota pectorina
is a synonym of the species known as
Atheta coriaria
(
Kraatz, 1856
)
(see below).
FIGURES 125–126.
Prementum and hypopharynx of
Dalotia coriaria
(Kraatz)
(male from Manhattan, New York). 125 — prementum; 126 — hypopharynx. Scale bar 0.1 mm.
Muona (1979a
,
1979b
,
1987
) pointed out that the species well known under the name
Atheta coriaria
does not in fact belong to
Atheta
because of the bisetose glossa and the distinct complex structure of the internal sac of the aedeagus. Because this species occurs in North America (
Muona 1979a
,
1984
) Muona did not propose a new name for the genus which would include this species. He suggested that one of the Casey names might be used when the
types
of Casey species are revised. My revision of Casey
types
of
Aleocharinae
suggests that
Dalotia
should be the valid name for this genus.