How to translate text using browser tools
25 March 2020 Larval Descriptions and Exuvial Retention of Toramini (Coleoptera: Erotylidae: Cryptophilinae)
Takahiro Yoshida, Richard A. B. Leschen
Author Affiliations +
Abstract

The larvae of three species of Toramus Grouvelle and one species of Loberoschema Reitter are described, and morphological character states of larval Toramini Sen Gupta and within Toramus are discussed. Larvae of Toramus attach their exuviae to the distal portions of their abdomen, with each exuvia from the preceding instar attached to one another to form a vertical pile. Exuvial attachment is facilitated by modified hook-like setae with flattened shafts on abdominal tergite VIII, which are inserted into the exuvia of the previous instar. These structures were examined in detail and observed that the flattened setae were broken in some specimens. Preliminary behavioral tests revealed that field-collected spiders attacked the larval body in most instances (25% attacks were on the exuvial pile), and predation success was negligible.

Takahiro Yoshida and Richard A. B. Leschen "Larval Descriptions and Exuvial Retention of Toramini (Coleoptera: Erotylidae: Cryptophilinae)," The Coleopterists Bulletin 74(1), 1-14, (25 March 2020). https://doi.org/10.1649/0010-065X-74.1.1
Received: 7 March 2019; Accepted: 3 November 2019; Published: 25 March 2020
KEYWORDS
autotomy
debris cloaking
exuvial attachment
Loberoschema
modified hook-like setae
Toramus
RIGHTS & PERMISSIONS
Get copyright permission
Back to Top