A review of the North American species of Hemipenthes Loew, 1869 (Diptera: Bombyliidae)
Author
Ávalos-Hernández, Omar
text
Zootaxa
2009
2074
1
49
journal article
10.5281/zenodo.187152
9ca02c70-00da-4f61-81df-99e6e6903b9c
1175-5326
187152
15.
Hemipenthes morioides
(Coquillett)
(Figs. 17, 61–62)
Anthrax morioides
Say, 1823
: 58
.
Hemipenthes morioides
(Say)
:
Osten Sacken, 1877
: 241
.
Anthrax catulina
Coquillett, 1894a
: 100
.
Hemipenthes catulina
(Coquillett)
:
Hull, 1973
: 385
Type
of
Anthrax morioides
destroyed in
ANSP
(
Evenhuis & Greathead, 1999: 447
); 4
Syntypes
(lost) of
Anthrax catulina
in
USNM
(
Evenhuis & Greathead, 1999: 442
);
Diagnosis:
Aureoles around bases of cells
r4
,
r5
,
m2
and
cup
; cell
a
entirely infuscated except tip; mesopleuron and sides of first abdominal tergite white or pale yellow pilose.
Description:
Male. Body length:
5–10 mm
; wing length:
6–10 mm
.
Head
: Eyes separated by a little more than width of ocellar triangle. Front black pilose, fulvous tomentose. Face brown, rounded, with black hairs and fulvous tomentum. Scape brown, swollen on inner apical margin, with black hairs, twice as long as pedicel; pedicel brown, twice as wide as long, with short black hairs; flagellomere brown, longer than scape and pedicel combined; base subconical, tapering to styliform apical two-thirds; stylus minute, terminal. Proboscis short, not projecting beyond oral margin. Palpi brown with black hairs. Occiput with short black and yellowish hairs and yellowish scales.
Thorax
: Mesonotum anterior margin yellowish pilose with a few long black hairs also present; lateral margin yellow and black pilose; tomentum on disc entirely yellowish, long, hairlike, not dense, with yellow hairs; bristles black. Mesopleuron black pilose with yellowish hairs mixed in on proepisternum, anepisternum, and katatergite; tomentum on katepisternum pale yellow, black pilose. Proepimeron with mixed black and yellowish hairs. Mid coxa with mixed black and yellowish hairs, tomentum on all coxae hairlike, pale yellow. Legs fulvous, femora black pilose and yellow tomentose, some black scales present; fore tibia with a single row of black bristles on postero-ventral surface; bristles black. Halter steam and knob brownish to yellowish. Scutellum brown, black pilose, and yellowish tomentose, paler along posterior margin, a spot of black tomentum in middle at base; bristles black. Black setulae on basicosta. Cells
c
,
sc
,
br
, and
bm
entirely infuscated (Fig. 17); cell
a
entirely infuscated except tip; cells
r1
and
cup
with two basal thirds infuscated; cell
dm
with basal half infuscated; cells
r2+3
,
r5
and
cua1
with basal third infuscated; cell
m2
infuscated just at base; color in cell
a
not reaching hind margin of wing; aureoles around bases of cells
r4
,
r5
,
m2
and
cup
; cell
dm
infuscated at or slightly behind r-m crossvein; r-m crossvein at or slightly beyond middle of cell
dm
; no crossvein between R4 and R2+3; cell
r5
slightly narrowed at wing margin; first section of vein CuA1 one and a half the long of r-m crossvein, second section one and a half the long of r-m crossvein, third section one and a half the long of first two sections combined; cell
a
slightly wider than cell
cup
; alula slightly developed.
Abdomen
: Abdominal dorsum whitish pilose on tergite one, rest black pilose; black tomentum overall, fulvous scales scattered at sides; sides of abdomen with first and basal half of second tergites whitish pilose, mixed abundant black and yellowish hairs on rest. Venter black pilose, whitish tomentose. Genitalia black or brown with black hairs. Epandrium in lateral view, rectangular, lower margin concave in middle, basal corner narrowed; gonocoxite narrow, basal half enlarged; gonostylus small, hooked apically; epiphallus in lateral view narrow (
Fig. 61
) slightly curved, cap-shaped, apex swollen, rounded; with a ventral extension broad at base with apex acuminate, portion of the epiphallus behind ventral extension longer than aedeagus; epiphallus in ventral view broad (
Fig. 62
), lateral margins narrowed at both sides before apex, with scattered spines in the middle and dense spines at apex; aedeagus broad at base narrowed at apex, not swollen dorsally; gonopore terminal.
Female. Nearly identical to male. Eyes separated by twice width of ocellar triangle. Setulae on basicosta black and yellow on base of wing.
FIGURES 61–62.
Hemipenthes morioides
male terminalia. 61, lateral view; 62, ventral view.
Distribution:
Canada
(British
Columbia
),
USA
(Arizona, California, Colorado, Idaho, Illinois, Indiana, Iowa, Massachusetts, Michigan, Minnesota, Montana, New
Jersey
, New
Mexico
, New York, Ohio, Oregon, Pennsylvania, Utah, Washington, Wisconsin, Wyoming).
Specimens examined:
USA
. Idaho: Moscow Mt.,
7-IX-1911
(
1 female
; USNM); Moscow M.
30-VIII- 1924
, A.L. Melander (
1 male
; USNM). Minnesota: Basswood Lake near Ely,
24-VI-1962
, R.W. Dawson (
1 male
; USNM). Oregon: Stein Mts. Harney Co.,
27-VI-1922
, W.J. Chamberlin (
1 male
genitalia
; USNM); Hood River,
6-II-1914
, Childs (
1 male
; USNM). Washington: Pullman,
28-VI-1965
, Roger D. Akre (
1 female
; USNM); Fields Spring St. Pk.,
17-VI-1961
, R.W. Dawson (
1 male
; USNM); Fields Spring St. Pk.,
9-VI-1965
, Roger D. Akre (
1 female
; USNM).
Remarks:
Hemipenthes morioides
is the valid name for this species in replacement for
H. catulina
.
H. morioides
was considered as a synonym of
H. morio
by
Hull (1973: 386)
but the original description of
H. morioides
from
Say (1823: 58)
distinctly describes the hyaline areas in the bases of cells
r4
,
r5
,
m2
and
cup
, a character not present in
H. morio
and which is the main character to distinguish this species (
Coquillett, 1894a: 100
).
Hemipenthes morioides
shares almost all external characteristics with
H. seminigra
, but can be easily distinguished from this species by the aureoles in the bases of cells
r4
,
r5
,
m2
and
cup
. The genitalia is also different, having the epiphallus in ventral view narrowed at the sides, but with the base wider (
Fig. 62
).
Hemipenthes morioides
has a distribution limited to the
USA
.
Brooks (1952)
cited this species as a predator of the tachinid fly
Bessa harveyi
Townsend
, which is a parasite of the sawfly
Pristiphora
sp. (
Hull, 1973
).
H. morioides
has been collected mainly in the western states of the
USA
.