pterothorax

pterothorax

the meso- and metathorax in insects (fused in dragonflies), which carry the wings.
References in periodicals archive ?
apicalis in the southeastern range (Suwannee County and Columbia County, Florida) have a broad humeral stripe across the length of the pterothorax.
Southeastern populations had an "atypical" humeral stripe that was much wider than the "typical" variation and generally extended beyond the anterior third of the pterothorax and might extend the entire length of the pterothorax.
2) and about 30 mm removed from her and opposite her pterothorax, and makes vigorous and accelerating "stridulatory" movements of the hind femora which, however, produce no audible sounds.
The examined specimens differ from the original description in their color pattern as follows (characters from original description translated from the French by Costa and Garrison 2001 in parenthesis): head black dull dorsally (orangish russet); prothorax black with lateral edges green pale (russet); pterothorax black dorsally with green pale antehumeral stripe present (russet, a little darker dorsally); abdomen shiny black dorsally (orangish russet dorsally), olive green ventrally (yellow).
silviae), lacking a differentiated medial lobe; pterothorax with complete antehumeral pale stripe, and no black stripe over metapleural suture (Fig.
All species have the same basic colour pattern with a dark ground colour and light markings forming a shoulder line and sidelines on the pterothorax.
Pterothorax and 1st abdominal segment, same pale brown color as pronotum and head; red marks on metathoracic episterna, and paired dorsolaterally on the metathoracic (very small) and 1st abdominal tergites (large).
The wing has 2 dark brown bands and the many striations on the mesonotum and metanotum of the pterothorax with many closely spaced together (Fig.
Very similar to apterous ones, but with pterothorax brown, more pigmented head, antennae, prothorax, part of femora and tibiae, tarsi, siphunculi and cauda, and stigmatic and marginal sclerites tenuously pigmented.
Body bicolored, mainly yellow to brownish yellow with head and pterothorax light brown, and abdominal segments VIII-X dark brown (Fig.