Distribution Records
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Vetting Levels |
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Adult phenology:
High Mountains (HM) ≥ 4,000 ft.
Low Mountains (LM) < 4,000 ft.
Piedmont (Pd)
Coastal Plain (CP)
Click on graph to enlarge
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| synonym | |
| taxonomic_comments |
Hadrobunus currently comprises four species that occur in North America north of Mexico (Cokendolpher and Lee, 1993; Shultz, 2010, 2012). However, Shultz (2010, 2018) and Burns et al. (2012) note that several undescribed species exist and that Leiobunum formosum will be tranferred to Hadrobunum based on genetic analysis. Only Hadrobunus maculosus and H. fusiformis have so far been documented in North Carolina (L. formosum has one old record from Wake County). |
| species_comment |
The type specimens were collected in 1939 by Rehn and Rehn at Smokemont, GRSMNP, Swain County (see Shultz, 2010) |
| id_comments |
Males are dark brown dorsally (Shultz, 2010). The scutum of the abdomen has a dark saddle that narrows towards the posterior end. The scutum is also crossed by six rows of light spots separated by bands that are uniform in color. The females are colored similarly but the rows of light spots on the last tergite of the scutum may be fused to form short stripes. The palps and pedal trochanters in both sexes are yellow-brown, unlike the dark, mottled brown characteristic of maculosus. |
| total_length |
7.4 mm, male holotype; 9.4 mm, female paratype (Shultz, 2010) |
| structural_features |
As in H. maculosus, the femur of the first leg is shorter than the body. The abdomen of the male is distinctively fusiform; that of the female is also elongated (Shultz,2010). Shultz provides a number of other morphological differences that separate the currently described species of Hadrobunus, particularly genitalic characters (see Shultz, 2010, 2012 for illustrations and more detailed descriptions). |
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| prey |
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| behavior |
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| distribution_reference |
Shultz (2010) |
| technical_reference |
Shultz (2010) |
| adult_id | 1 identifiable by photo 2 identifiable by photo of specific features and/or supplementary info 3 identifiable from specimen only |
| abundance |
Collected in fairly large numbers on one occasion at Mt. Pisgah; also collected multiple times at a site in Macon County |
| distribution_comments |
Records for this species come from the Southern Appalachians of North Carolina and adjoining Georgia, but also from the outer Coastal Plain of South Carolina and Georga (Shultz, 2010) |
checklist_mt_high
>=4,000 ft. | |
checklist_mt_low
<4,000 ft. | |
checklist_pd
Piedmont | |
checklist_cp
Coastal Plain | |
| habitat |
Found in North Carolina at fairly low elevations in the Mountains but at 4,000-5,000' at one site. It has also been recorded in coastal South Carolina and Georgia (Shultz, 2010) and was recorded at a wide range of habitats at the Savannah River Plant in Georgia (Draney and Shultz, 2016). |
| observation_methods |
No information on the activity patterns appear to exist. Like H. maculosus, it may be active mainly at night. |
| state_protection |
Arachnids are not protected under state law, although permits are needed to collect them in State Parks and other public and private nature preserves |
| NHP_ranks |
[GNR] [S3S5] |
| NHP_status |
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| status_comments |
The distribution, habitat associations, abundance, and population trends are still too poorly known to estimate the conservation status of this species in North Carolina. Its presence in both the Southern Appalachians and the Coastal Plain of South Carolina and Georgia suggests that it could be actually fairly widespread and generalized in terms of its habitats. |
Photo Gallery for Hadrobunus fusiformis No common name |
 | Recorded by: Colin Warner
Madison Co.
Comment: |  | Recorded by: Steve Hall and Bo Sullivan
Ashe Co.
Comment: Adult female found on the ground |
 | Recorded by: Steve Hall and Bo Sullivan
Ashe Co.
Comment: Adult female found on the ground |
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