fulminating long-horned beetle
(Sarosesthes fulminans)
Conservation • Description • Habitat • Biology • Distribution • Taxonomy
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Description |
Fulminating long-horned beetle is a medium-sized, early season, round-necked longhorn beetle. It occurs in the United States from Maine to Maryland, west to Minnesota and Missouri, and south along the Appalachian Mountains to North Carolina. It also occurs in southern Canada in Quebec, Ontario, and Manitoba. Adults are active from May to July, with peak activity occurring in June. The larvae are found under the bark and in the sapwood of hardwood trees, especially chestnut, oak, and walnut. Adults are ½″ to ⅞″ (12.0 to 22.0 mm) in length. The body is nearly cylindrical and significantly elongated. It is entirely black with patterns of dense white hairs. The head is slightly elongated. The eyes are deeply notched, partially surrounding the base of each antenna. The antennae are long, reaching at least the second third of the wing covers (elytra). The bases of the antennae are closely spaced. The face is slanted forward. The plate on the face (clypeus) is well developed. The plate covering the first segment of the thorax (pronotum) is oblong, almost spherical. Dense white hairs form a distinctive, large, black spot in the middle and a distinct, smaller black eyespot on each side. On the underside of the third segment of the thorax, a plate on each side (metepimeron) is four times longer than wide, and it extends over the rear angles of the first segment. The elytra are parallel sided, and they are cut off (truncated) in the rear, exposing the last segment of the abdomen. Dense white hairs form five narrow, sharply angled, transverse bands crossing both elytra. The legs are long. On each leg, the third segment (femur) is gradually thickened toward the end. The last part of each leg (tarsus), corresponding to the foot, has five segments. The fourth segment is very short and is concealed within the broadened tip of the third segment, making the tarsus appear to have only four segments. |
Size |
Total length: ½″ to ⅞″ (12.0 to 22.0 mm) |
Similar Species |
Habitat |
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Biology |
Season |
May to June |
Behavior |
Adults will come to light and to baited traps. |
Life Cycle |
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Larva Food |
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Adult Food |
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Distribution |
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Sources |
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| 3/14/2024 | ||
Occurrence |
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Taxonomy |
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Order |
Coleoptera (beetles) |
Suborder |
Polyphaga (water, rove, scarab, long-horned, leaf, and snout beetles) |
Infraorder |
Cucujiformia |
Superfamily |
Chrysomeloidea (longhorn beetles and allies) |
Family |
Cerambycidae (longhorn beetles) |
Subfamily |
Cerambycinae (round-necked longhorn beetles) |
Tribe |
Clytini |
Genus |
Sarosesthes |
This is the only species in the genus Sarosesthes. |
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Subordinate Taxa |
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Synonyms |
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Sarosethes fulminans (misspelling) |
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Common Names |
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fulminating long-horned beetle |
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Glossary
Clypeus
On insects, a hardened plate on the face above the upper lip (labrum).
Elytra
The hardened or leathery forewings of beetles used to protect the fragile hindwings, which are used for flying. Singular: elytron.
Femur
On insects and arachnids, the third, largest, most robust segment of the leg, coming immediately before the tibia. On humans, the thigh bone.
Pronotum
The exoskeletal plate on the upper side of the first segment of the thorax of an insect.
Tarsus
On insects, the last two to five subdivisions of the leg, attached to the tibia; the foot. On spiders, the last segment of the leg. Plural: tarsi.
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Michael Woolridge |
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This the second one I've found this week. |
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Michael Woolridge |
Location: Monticello, MN This the second one I've found this week. |
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MinnesotaSeasons.com Sightings |
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Created: 3/14/2024 Last Updated: © MinnesotaSeasons.com. All rights reserved. |