Houghton David C, DeWalt R Edward
Department of Biology, Hillsdale College, 33 East College Street, Hillsdale, MI 49242, USA Hillsdale College Hillsdale United States of America.
Illinois Natural History Survey, 1816 South Oak Street, Champaign, IL 61820, USA Illinois Natural History Survey Champaign United States of America.
Zookeys. 2024 Oct 25;1216:201-218. doi: 10.3897/zookeys.1216.129914. eCollection 2024.
Based on recent collecting and a synthesis of ~100 years of historical data, 219 caddisfly species are reported from the state of Indiana. Seventeen species are reported herein from the state for the first time, including two previously thought to be endemic to the southeastern USA. Species records are also presented herein organized by drainage basin, ecoregion, glacial history, and waterbody type for two distinct time periods: before 1983 and after 2005. More species were reported from the state before 1983 than after 2005, despite collecting almost 3× the number of occurrence records during the latter period. Species occurrence records were greater for most families and functional feeding groups (FFGs) for the post-2005 time period, although the Limnephilidae, Phryganeidae, Molannidae, and Lepidostomatidae, particularly those in the shredder FFG, instead had greater records before 1983. This loss of shredders probably reflected the ongoing habitat degradation within the state. While species rarefaction predicts only a few more species to be found in Indiana, many regions still remain under-sampled and 44 species have not been collected in >40 years.
基于近期的采集以及约100年历史数据的综合分析，印第安纳州共记录了219种毛翅目昆虫。本文首次报道了该州的17个物种，其中包括两种先前被认为是美国东南部特有的物种。本文还按流域、生态区、冰川历史和水体类型，呈现了两个不同时间段（1983年之前和2005年之后）的物种记录。尽管2005年之后的出现记录数量几乎是前一时期的3倍，但1983年之前该州报告的物种比2005年之后更多。2005年之后，大多数科和功能摄食类群（FFG）的物种出现记录更多，不过沼石蛾科、石蛾科、沼石蛾科和鳞石蛾科，尤其是那些属于撕食者FFG的类群，在1983年之前的记录反而更多。撕食者类群数量的减少可能反映了该州栖息地的持续退化。虽然物种稀疏度分析预测印第安纳州可能仅再发现少数几种物种，但许多地区的采样仍不足，44种物种已有40多年未被采集到。
