Access

You are not currently logged in.

Access JSTOR through your library or other institution:

login

Log in through your institution.

If You Use a Screen Reader

This content is available through Read Online (Free) program, which relies on page scans. Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Journal Article

Blackburnia riparia, New Species (Coleoptera: Carabidae, Platynini): A Novel Element in the Hawaiian Riparian Insect Fauna

James K. Liebherr and Andrew E. Z. Short
Journal of the New York Entomological Society
Vol. 114, No. 1/2 (Spring - Summer, 2006), pp. 1-16
Stable URL: http://www.jstor.org/stable/25010534
Page Count: 16
Were these topics helpful?
See something inaccurate? Let us know!

Select the topics that are inaccurate.

Cancel
  • Read Online (Free)
  • Subscribe ($19.50)
  • Add to My Lists
  • Cite this Item
Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Blackburnia riparia, New Species (Coleoptera: Carabidae, Platynini): A Novel Element in the Hawaiian Riparian Insect Fauna
Preview not available

Abstract

Blackburnia riparia, new species is described from the summit of Mt. Waialeale, Kauai, Hawaii, incorporated into a phylogenetic analysis of Blackburnia Sharp, and thereby placed as the adelphotaxon to two other allopatric Kauai species, B. lata Liebherr and B. atra Liebherr. The new species occurs in riparian habitats, including vertical rock-faced seeps and algal mats, and is documented to feed on aquatic larvae of Micropsectra Kieffer (Diptera: Chironomidae). Blackburnia elegans (Sharp) adults also occur in streams on Waialeale summit where they were found walking under water on the undersides of large, flat rocks. Based on documented prey and observed behavior, both species appear to forage under the waterline. The abdominal and elytral anatomy of adult B. riparia and B. elegans is suitable for retention of a subelytral air bubble, suggesting these species respire underwater. Adults and associated larvae of Blackburnia mandibularis Liebherr inhabit moss-mats along falls' margins at Waipoo Falls, Kokee State Park, Kauai, indicating that this species' active life stages also reside in the riparian zone. Attributes of the larval head capsule and mandibles for B. riparia and B. mandibularis are associated with homologous characters expressed in adult anatomy, ontogenetically linking larval and adult head and mouthpart specializations. The various evolutionary origins of riparian habits are examined across Blackburnia. Via one route, occupation of the montane riparian zone has evolved from terrestrial moss-mat habitation, with concomitant evolutionary reduction of adult compound eyes. A second evolutionary route to the riparian zone is based on occupation of open, disturbed or ephemeral habitats, in some cases assisted by adult winged dispersal.

Page Thumbnails

  • Thumbnail: Page 
[1]
    [1]
  • Thumbnail: Page 
2
    2
  • Thumbnail: Page 
3
    3
  • Thumbnail: Page 
4
    4
  • Thumbnail: Page 
5
    5
  • Thumbnail: Page 
6
    6
  • Thumbnail: Page 
7
    7
  • Thumbnail: Page 
8
    8
  • Thumbnail: Page 
9
    9
  • Thumbnail: Page 
10
    10
  • Thumbnail: Page 
11
    11
  • Thumbnail: Page 
12
    12
  • Thumbnail: Page 
13
    13
  • Thumbnail: Page 
14
    14
  • Thumbnail: Page 
15
    15
  • Thumbnail: Page 
16
    16