Corynoneura

Wiedenbrug, Sofia, Lamas, Carlos E. & Trivinho-Strixino, Susana, 2012, 3574, Zootaxa 3574, pp. 1-61 : 59-60

Key to known larvae of Corynoneura of the Neotropical Region

* C. renata is included in the key as having the mentum with two or three median teeth.

1. Antenna subequal or shorter than postmentum length. Mentum with six or seven median teeth, if not, median tooth subequal or slightly smaller than median lateral teeth ( Fig. 16 G)......................................................... 18

-. Antenna subequal or longer than postmentum length. Mentum with two or three median teeth, if three, median tooth much smaller.............................................................................................. 2

2. First antennal segment almost as long as or longer as postmentum length ( Figs 9 E, 12 E, 20 D)...................... 3

-. First antennal segment shorter than postmentum length ( Figs 36 A, B)............................................ 9

3. Mentum with three median teeth ( Fig. 14 F)............................................................... 4

-. Mentum with two median teeth ( Figs 6 E, 9 F, 12 F, 20 E)..................................................... 5

4. Mentum with first and second lateral pair of teeth equally strong, basal seta on posterior parapods split at the base............................................................... C. scutellata Winnertz (sensu Hirvenoja & Hirvenoja 1988)

-. Mentum with first lateral pair of teeth smaller and paler than the second, basal seta on posterior parapods apparently simple ( Figs 14 F, H).................................................................. C. ferelobata Sublette et Sasa

5. Head with dorsolateral sclerotized fold ( Fig. 6 D)............................................... C. canchim sp. n

-. Head dorsolateral smooth............................................................................... 6

6. Antenna about two times as long as postmentum length ( Fig. 9 E).................................... C. diogo sp. n.

-. Antenna about three times as long as postmentum length or longer ( Figs 12 E, 20 D)................................ 7

7. Second antennal segment shorter than the third ( Fig. 20 D), mentum with first lateral pair of teeth smaller but not adpressed to the median teeth ( Fig. 20 E)............................................................... C. humbertoi sp. n.

-. Second antennal segment longer than the third, mentum with first lateral teeth adpressed to the median teeth ( Figs 12 F, 22 E) .................................................................................................... 8

8. Antenna longer than 720 µm. Second antennal segment about half as long as the first, or shorter ( Fig. 22 D).................................................................................................. C. longiantenna sp. n.

-. Antenna shorter than 700 µm. Second antennal segment longer than above ( Fig. 12 E)................. C. espraiado sp. n.

9. Mentum with 2 median teeth............................................................................ 10

-. Mentum with three median teeth......................................................................... 13

10. Head with two or three dorsolateral spines anterior to the eyes ( Fig. 36 A). Two anal setae on each procercus....................................................................................................C. sp “headspines”

-. Head without dorsolateral spines. Usually four anal setae on each procercus...................................... 11

11. Mentum with first pair of lateral teeth smaller than the second.............. C. hermanni Wiedenbrug et Trivinho-Strixino

-. Mentum with first pair of lateral teeth larger than the second................................................. 12

12. Second antennal segment subequal or larger than the third ( Fig. 27 F)............................ C. salviniatilis sp. n.

-. Second antennal segment smaller than the third ( Fig. 24 E)......................................... C. renata sp. n. *

13. Basal seta on posterior parapods long and pectinate along one side.............................................. 14

-. Basal seta on posterior parapods split from the base......................................................... 15

14. Ventral setae on abdomen not apically divided........................ C. unicapsulata Wiedenbrug et Trivinho-Strixino

-. Ventral setae on abdomen apically divided....................... C. sp. circulimentum Wiedenbrug et Trivinho-Strixino

15. Postmentum length/head width about 1.5................................. C. mineira Wiedenbrug et Trivinho-Strixino

-. Postmentum length/head width 0.9 – 1.2................................................................... 16

16. Second antennal segment subequal or shorter than the third................................................... 17

-. Second antennal segment longer than the third........................ C. mediaspicula Wiedenbrug et Trivinho-Strixino

17. Basal seta on posterior parapods dark ( Fig. 24 H)................................................ C. renata sp. n. *

-. Basal seta on posterior parapods not as above.......................... C. fortispicula Wiedenbrug et Trivinho-Strixino

18. Mentum with three median teeth ( Fig. 16 G), spine on posterior pseudopods long, longer than 100 µ...... C. franciscoi sp. n.

-. Mentum with more than three median teeth, spine on posterior pseudopods shorter, about 50µm...................... 19

19. Mentum with six median teeth.................................. C. sp. s exadentata Wiedenbrug et Trivinho-Strixino

-. Mentum with seven median teeth........................................................................ 20

20. Frontoclypeal apotome of about 140 µm, postmentum length about 100 µm.................................................................................................... C. sertaodaquina Wiedenbrug et Trivinho-Strixino

-. Frontoclypeal apotome about 170µm, postmentum length 120–125 µm..... C. septadentata Wiedenbrug et Trivinho-Strixino