Castoraeschna
Creators: name: Carvalho, Alcimar L.
name: Souza, Pedro Henrique R.
name: Calil, Eduardo R.
Publisher: name: Zenodo
Year: 2006
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Odonata
Aeshnidae
Castoraeschna

description: Key to the known last instar larvae of species of Castoraeschna
1 Outer and distal margins of palpal lamina forming an angle of about 85°; distal margins of palpal laminae, when the palps closed, forming an angle smaller than 10° between the pair; pair of distal hooks not overlapping when the palps closed ............. 2
­ Outer and distal margins of palpal lamina forming an angle of around 100°; distal margins of palpal laminae, when the palps closed, forming an angle larger than 50° between the pair; pair of distal hooks overlapping when the palps closed ................... 3
2 Labium, when folded, reaching anterior base of metathoracic legs; ventral carina of abdominal segment 9 with a row of spines along its length; dorso­basal process of male epiproct not reaching the midlength of appendage (central South America)......... .................................................................................................................. C. longfieldae
­ Labium, when folded, reaching the posterior base of mesothoracic legs; ventral carina of abdominal segment 9 with row of spines restricted to its lateral areas; dorso­basal process of male epiproct reaching the midlength of appendage (southern South America) ..................................................................................................... C. decurvata
3 Distal margins of palpal laminae, when the palps closed, forming an angle of about 90° between the pair; apex of lateral spine of abdominal segment 7 reaching level of segment 8; apex of lateral spine of abdominal segment 9 reaching level of posterior border of segment 10 (central South America) ............................................. C. colorata
­ Distal margins of the palpal laminae, when the palps closed, forming an angle clearly smaller than 90° between the pair; apex of lateral spine of abdominal segment 7 not reaching level of segment 8; apex of lateral spine of abdominal segment 9 reaching approximately level of middle region of segment 10.................................................... 4
4 Labium, when folded, reaching posterior margin of mesothoracic legs; distal margins of the palpal laminae, when the palps closed, forming an angle of around 50° between the pair (southeastern Brazil) ........................................................................... C. castor
­ Labium, when folded, reaching the area between meso­ and metathoracic legs; distal margins of the palpal laminae, when the palps closed, forming an angle of around 65° between the pair (southern Venezuela) ............................................................ C. tepuica
description: Published as part of Carvalho, Alcimar L., Souza, Pedro Henrique R. & Calil, Eduardo R., 2006, Description of the larvae of Castoraeschna colorata (Martin, 1908) and C. longfieldae (Kimmins, 1929) (Insecta: Odonata: Aeshnidae), with a key to the known larvae of the genus, pp. 19-28 in Zootaxa 1296 on pages 26-27, DOI: 10.5281/zenodo.173547