Dendrocoris Bergroth,
1891
Liotropis
Uhler, 1877: 399-400. (junior homonym of Liotropis Fitzinger, 1843,
Reptilia)
Dendrocoris
Bergroth, 1891: 228. (new name for Liotropis Uhler, 1877)
Atizies
Distant, 1893: 456. (syn. by Nelson, 1955)
Type Species:
Liotropis:
Liotropis humeralis Uhler, 1877, by monotypy. Atizies:
????????????????????.
Tribal Placement: This genus is
clearly a member of the tribe Procleticini.
Included Species:
arizonensis Barber
contaminatus Uhler
fruticicola Bergroth
guatemalensis Thomas & Brailovsky
humeralis (Uhler)
inermis Thomas & Brailovsky
maculosus Thomas |
nelsoni Thomas & Brailovsky
neomexicanus Nelson
parapini Nelson
pini Montandon
reticulatus Barber
suffultus (Distant)
variegatus Nelson |
Comments:
Nelson (1955) revised this genus. Thomas (1984) added a species, then he
and Brailovsky (2000) added three more species, and presented a key to all
species.
Key to Species of Dendrocoris (from Thomas & Brailovsky, 2000)
1
Vertex of head convex, tumid |
2 |
-
Vertex of head flat |
7 |
|
|
2(1)
Cicatrices and often neighboring areas of pronotum contrastingly darker
the rest of pronotum |
3 |
-
Cicatrices concolorous with dorsum |
4 |
|
|
3(2)
Connexival segments unicolorous (southwestern U.S. and northern Mexico) |
contaminatus (Uhler) |
-
Connexival segments with contrasting dark margins (New Mexico to Utah |
neomexicanus Nelson |
|
|
4(2)
Anterolateral pronotal margin thick; head elongate (southwestern U.S.) |
parapini Nelson |
-
Anterolateral margins of pronotum thin, compressed; head length about
equal to width |
5 |
|
|
5(4)
Head, pronotum, and pleura devoid of dark punctations (western Canada to
Baja California) |
pini Montandon |
-
Head, pronotum, and pleura with numerous dark punctations |
6 |
|
|
6(5)
Lateral flange of pygophoral margin acuminate and notched (southern
Mexico, Guatemala) |
guatemalensis Thomas & Brailovsky |
-
Lateral flange of pygophoral margin obtuse, lacking notch (northern
Mexico, southwestern U.S.) |
nelsoni Thomas & Brailovsky |
|
|
7(1)
Venation of hemelytral membrane reticulate (southwestern U.S. and
northwestern Mexico) |
reticulatus Barber |
-
Venation of hemelytral membrane simple |
8 |
|
|
8(7)
Legs with conspicuous black spots (southwestern Mexico) |
maculosus Thomas |
-
Legs immaculate |
9 |
|
|
9(8)
Spiracles surrounded by a broad dark spot (southeastern U.S.) |
fruticicola (Bergroth) |
-
Spiracles concolorous with venter or narrowly margined in black |
10 |
|
|
10(9) Base of
abdomen without tubercle (a weak prominence in some females) |
11 |
-
Base of abdomen with distinct, forwardly directed tubercle |
13 |
|
|
11(10) Margins
of juga denticulate (southern Mexico) |
variegatus Nelson (part) |
-
Margins of juga without teeth |
12 |
|
|
12(11)
Pygophore with pair of small, black teeth at base of medial emargination
(southern Mexico) |
inermis Thomas & Brailovsky |
-
Pygophore without black teeth on posterior surface (most of U.S., northern
Mexico) |
humeralis (Uhler) (part) |
|
|
13(10) Head
distinctly wider than long (southern Mexico) |
variegatus Nelson (part) |
-
Head longer than wide or about equal to length |
14 |
|
|
14(13)
Anterolateral pronotal margins distinctly paler than pronotal disc (most
of U.S. and northern Mexico) |
humeralis (Uhler) (part) |
-
Anterolateral pronotal margins darkened or concolorous with disc |
15 |
|
|
15(14)
Anterolateral pronotal margins nearly straight; spiracles at most thinly
ringed with black (southwestern U.S. and northern Mexico) |
arizonensis Barber |
-
Anterolateral pronotal margins distinctly concave; spiracles usually black
(central Mexico) |
suffultus (Distant) |
Dendrocoris sp.
photo courtesy of larvalbug
David A. Rider
Professor of Entomology
North Dakota State University
202 Hultz Hall
Fargo, ND 58105
E-Mail:
David.Rider@ndsu.edu
Published by the
Department of Entomology
Prospective students may schedule a visit by calling 1-800-488-NDSU.
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