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| synonym |
Tortistilus abnormus |
| description |
The pronotum tends to be highly arched in this species, with the sides densely spotted with white. The pregenital sternite of the female has a broad V-shaped notch in the center of the posterior margin. Adult males are 7.2 mm long and 3.8 mm wide across the horns, while females are 7.5 mm and 4.2 mm across the horns (Caldwell, 1949). Additionally, the pronotum is not pubescent and anteriorly is somewhat tall; overall, it has a large appearance. The reddish to red-brown legs are also diagnostic for this species.
For more images of this species, see: BG. |
| distribution |
Eastern North America |
| abundance |
Recorded from several counties in the Piedmont and mountains; uncommon to rare, but likely underreported due to misidentifications with Hadrophallus bubalus. |
| seasonal_occurrence | |
| habitat |
Forested areas |
| plant associates |
Quercus sp. (CTGSMNP) |
| behavior |
Can be attracted at night with a light. |
| comments |
This species was confused and misidentified for years with Hadrophallus bubalus and, together with Stictocephala bisonia, form a bit of a visual complex of species that look similar to one another. However, there are some key criteria that can be used to help separate the three species, and the subgenital plates and pregenital sternites of these three genera are also different from one another. (S. Hendrix pers. comments)
bubalus: the pronotum is very pubescent and strongly arched (but not anteriorly very tall). Has green legs. Overall small appearance. subgenital plates
bisonia: the pronotum is not pubescent, is strongly arched, and anteriorly is very tall. Has green legs. Overall large appearance. Stictocephala subgenital plates
abnorma: the pronotum is not pubescent, is strongly arched, and anteriorly is somewhat tall. Has red legs. Overall large appearance. subgenital plates |
status |
[Native:]
[Introduced:]
[Extirpated:] | | list_type |
[Official:]
[Provisional:] |
| adult_id | Unmistakable and widely known Identifiable from good quality photos of unworn specimens
Identifiable from photos showing undersides, or other specialized views [e.g., legs, face]
Identifiable only by close inspection of structural features or by DNA analysis NULL |
| nymph_id | Unmistakable and widely known Identifiable from good quality photos, especially where associated with known host plants
Identifiable from close inspection of specimens or by DNA analysis
Identifiable only through rearing to adulthood NULL |
| G_rank |
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| S_rank |
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| rank_comments |
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| tribe |
Ceresini |
| subgenus |
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Species Photo Gallery for Tortistilus abnorma No Common Name |
 | Photo by: Ken Childs
Out Of State Co.
Comment: |  | Photo by: Ken Childs
Out Of State Co.
Comment: |
 | Photo by: Ken Childs
Out Of State Co.
Comment: |  | Photo by: Harry Wilson
Wake Co.
Comment: |
 | Photo by: Ken Childs
Out Of State Co.
Comment: |  | Photo by: Ken Childs
Out Of State Co.
Comment: |
 | Photo by: Ken Childs
Out Of State Co.
Comment: |  | Photo by: Scott Bolick
Forsyth Co.
Comment: |
 | Photo by: Scott Bolick
Forsyth Co.
Comment: |  | Photo by: Scott Bolick
Forsyth Co.
Comment: |
 | Photo by: Scott Bolick
Forsyth Co.
Comment: |  | Photo by: Scott Bolick
Forsyth Co.
Comment: |
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