Table 2 |
||
| Key for the Churchill, Manitoba, area Limnephilidae larvae | ||
| 1) | all gill clusters with a single filament | Phanocelia canadensis |
| at least some gills with clusters of 3 or more filaments (Figure 15A) | 2 | |
| 2) | at least some gill clusters with more than 3 filaments (Figure 15A) | 3 |
| no gill clusters with more than 3 filaments (Figure 15D) | 5 | |
| 3) | setae present on metonotal membrane between sa2 sclerites (Figure 15B) | Hesperophylax designatus |
| metanotal membrane setae absent | 4 | |
| 4) | 2nd and 3rd mesofemur with only 2 major ventral setae (Figure 15C) | Lenarchus fautini |
| 2nd and 3rd mesofemur with numerous major ventral setae (Figure 15F) | Onocosmoecus unicolor | |
| 5) | setae present on metonotal membrane between sa2 sclerites (Figure 15B) | Asynarchus rossi |
| metanotal membrane setae absent | 6 | |
| 6) | dorsomesal chloride epithelia present (Figure 15D) | 7 |
| dorsomesal chloride epithelia absent | 12 | |
| 7) | mesofemur with accessory setae on at least one lateral surface (Figure 15C) | 8 |
| mesofemur lacking lateral accessary setae | 11 | |
| 8) | anterolateral corner of pronotum with scurf of small, stout spicules (Figure 15E) | Anabolia bimaculata |
| stout spicule scurf absent | 9 | |
| 9) | basal trochantal segment with accessory setae (Figure 16A & B) | 10 |
| basal trochantal segment without accessory setae | Asynarchus mutatus | |
| 10) | ventrolateral abdominal gill series extends to 4th segment | Asynarchus lapponicus |
| ventrolateral abdominal gills extend to 6-7th segment | Asynarchus montanus | |
| 11) | ventral apotome short, about half the length of ventral ecdysial suture (Figure 16C); metanotal sa1 and sa2 sclerites small or absent | Arctopora pulchella |
| ventral apotome long, nearly reaching posterior margin (Figure 16D); metanotal sclerites large, obvious (Figure16E) | Grammotaulius interrogationis | |
| 12) | accessory setae present on at least one mesofemur lateral surface (Figure 15C &16B) | 13 |
| mesofemur lateral accessary setae absent | 19 | |
| 13) | basal segment of mesotrochanter with accessary setae (Figure 16B) | Philarctus bergrothi |
| mesotrochanter basal segment without accessory setae | 14 | |
| 14) | dorsum of head base color pale with a distinct U-shaped dark band (Figure 10C) | Nemotaulius hostilus |
| base color of head dark (Figure 9I) | 15 | |
| 15) | anterior of pronotum with transverse, wide dark band (Figure 16E) | 16 |
| anterior of pronotom without wide, transverse dark band | 17 | |
| 16) | head with three distinct dark bands dorsally against pale background (Figure 9G) | Limnephilus infernalis |
| head with dark areas and scattered darker muscle scars, without pale background laterally (Figure 9I) | Limnephilus nigriceps | |
| 17) | pale blotches of frontoclypeal area all located within frontoclypeal sutures (Figure 8K) | Limnephilus alaicus |
| at least parts of frontoclypeal pale areas located laterad of frontoclypeal sutures (Figure 8J) | 18 | |
| 18) | the two anterior frontoclypeal pale areas are round (Figure 8J) | Limnephilus ademus |
| the two anterior frontoclypeal pale areas are linear and extend further forward along frontoclypeal suture (Figure 9H) | Limnephilus major | |
| 19) | head with dark background color with darker muscle scars. Any pale areas are small and limited to the frontoclypeal area (Figure 9L) | 20 |
| head with large pale areas not limited to frontoclypeal area (Figure 9A) | 23 | |
| 20) | head monochromatic brown with little evidence of pale areas in frontoclypeal area (Figure 8L) | Limnephilus argenteus |
| head with pale areas in frontoclypeal area (Figure 10B) | 21 | |
| 21) | anterior ventral apotome about half the length of the ecdysial suture (Figure 16C) | Limnephilus picturatus |
| anterior ventral apotome nearly as long as the ecdysial suture (Figure 16D) | 22 | |
| 22) | frontoclypeal pale blotches extend anteriorly beyond eye (Figure 9K) | Limnephilus perpusillus |
| frontoclypeal pale blotches do not extend anteriorly beyond eye (Figure 10B) | Limnephilus sericeus | |
| 23) | frontoclypeus without distinct linear dark stripe (Figure 9A) | Limnephilus canadensis |
| frontoclypeal stripe distinct (Figure 9D) | 24 | |
| 24) | medial frontoclypeal band expanded anteriorly with dark coloration reaching anterior frontoclypeal corners (Figure 9C) | 25 |
| medial frontoclypeal band not strongly expanded and without distinct dark coloration in anterior frontoclypeal corners (Figure 9F) | 27 | |
| 25) | lateral dark bands of head reach posterior margin of head (Figure 9D) | Limnephilus femoralis |
| lateral dark bands curved mesad and not reaching posterior margin of head (Figure 9B) | 26 | |
| 26) | mesonotal sa1 with numerous setae | Limnephilus externus |
| mesonotal sa1 with only a single seta (Figure 16F) | Limnephilus extractus | |
| 27) | mesonotal base color dark (Figure 17A) | Limnephilus fischeri |
| mesonotal base color pale (Figure 17B) | 28 | |
| 28) | dark muscle scars broadly scattered across postgenal area (Figure 17C) | Limnephilus sansoni |
| postgenal muscle scars coalesced into a band | 29 | |
| 29) | postgenal band distinct (Figure 17D) | Limnephilus partitus |
| postgenal band indistinct (Figure 17E) | Limnephilus hageni | |
Ruiter et al.
Ruiter et al. BMC Ecology 2013 13:5 doi:10.1186/1472-6785-13-5
