Hydroptilidae, Stephens, 1836

Bowles, David E., Cheri, Cameron, Usrey, Faron D. & Williams, Jeffrey M., 2020, Caddisflies (Trichoptera) of the Buffalo National River, Arkansas, Insecta Mundi 2020 (770), pp. 1-17 : 7-8

Family Hydroptilidae

Dibusa angata Ross : Searcy Co. ( Moulton and Stewart 1996); 8, 9, 10, 12, 23, 30. May. Widely scattered but uncommon in collections.

Hydroptila albicornis Hagen : 44, 50. May. Rare; known only from two males at this site.

H. armata Ross : 1, 17, 26, 28, 31, 32, 38, 44, 45, 50. May, September. Widespread and common. Widely scattered and common.

H. broweri Blickle : Searcy Co. ( Moulton and Stewart 1996); 6, 13, 17, 21, 28, 31, 32, 38, 44, 47. May, July–September. Widely scattered and common.

H. consimilis Morton : 2, 7, 11, 12, 13, 32, 38, 44. May–September. Widely scattered and common.

H. grandiosa Ross : 8, 13, 15, 17, 28, 31, 32, 38, 44, 45. August–October. Widely scattered and common.

H. hamata Morton : 1, 2, 8, 13, 15, 17, 26, 28, 31, 32, 38, 44, 45. April–May, July–October. Widely scattered and common.

H. perdita Ross : 1, 8, 9, 17, 22, 26, 28, 31, 32, 38, 44, 45, 47, 50. May-July, September–October. Widely scattered and common.

H. sandersoni Mathis & Bowles : 8, 13, 47. May–June, August–September. This Ozark endemic was widespread in the river, but it was uncommon in samples.

H. virgata Ross : 1, 8. May. June-August. Known only from a few specimens taken at these two locations.

H. waubesiana Betten : 45. July. This species is common in the region, but we found only a few specimens at this location.

Neotrichia edalis Ross : 31. July. June–August. Known only from a few specimens taken at this location.

N. okopa Ross : 1, 8. July–September June–August. Known only from a few specimens taken at these two locations.

N. vibrans Ross : 13, 15, 17. May, September–October. June-August. Known only from a few specimens taken at these locations.

Ochrotrichia anisca (Ross) : 1, 2, 7, 8, 9. April–July. This species was restricted to upper river sites, where it was relatively abundant in samples.

O. arva Ross : 7, 11. June–August. Known only from a few specimens taken at these two locations.

O. contorta Ross : 2, 5, 9. April–May. This species is listed as a species of concern by the Arkansas Natural Heritage Commission (2015).

O. eliaga Ross : 2, 5, 7, 12, 13, 21. May–July. Found in upper and mid-river sites were it was fairly common.

O. riesi Ross : 7, 13. June, September. Restricted to upper river sites where it was uncommon in samples.

O. tarsalis (Hagen) : 1, 8, 13, 15, 17, 18, 26, 31, 32, 38, 44, 45. June, August, September–October. Widely scattered and common.

Ochrotrichia n. sp.: 44. July. This undescribed species is rare and known only from two specimens collected at this site. The species will be described in a separate paper.

Orthotrichia aegerfasciella (Chambers) : 1, 2, 5, 13, 17, 32, 38, 44, 45. May, July, September. Widely scattered and common.

O. cristata Morton : 44. July. Rare; found only at Rush Spring.

Oxyethira coercens Morton : This species was reported by ( Moulton and Stewart 1996) from this Searcy Co., Buffalo River at Highway 65. We did not collect any specimens during this study.

O. dualis Morton : 5, 9. May–June. Restricted to upper river sites and it was uncommon in samples.

O. forcipata Mosely : 13. July–September. We collected a few examples at this location only.

O. pallida (Banks) : 1, 8, 15, 17, 32, 38, 44, 47. May, July, September–October. Widely scattered and common.

O. zeronia Ross : 2, 31. May. Known from only a few specimens taken at these locations.

Stactobiella delira (Ross) : 1, 2, 8, 24. May. Widely scattered but uncommon in collections.

S. palmata (Ross) : 21. May. This species was reported by Frazer et al. (1991) from this site. We did not collect any specimens during this study.