Systenus
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publication ID |
https://doi.org/ 10.11646/zootaxa.4020.1.7 |
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publication LSID |
lsid:zoobank.org:pub:BD8D1880-79A9-4672-99AF-5B3D1BEFAFEE |
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DOI |
https://doi.org/10.5281/zenodo.6121795 |
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persistent identifier |
https://treatment.plazi.org/id/172D87FD-FFBF-FF8C-FF3D-A51301C5FAFE |
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treatment provided by |
Plazi |
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scientific name |
Systenus |
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Key to males of Systenus View in CoL View at ENA from Costa Rica
1 All femora yellow.................................................................................... 2
- At least one femur with some brown cuticle................................................................. 4
2 Cercus short, wide and subrectangular ( Figs 4 View FIGURE 4 d, e); tibiae yellow with brownish vestiture; postpedicel basally subrectangular and yellow, and abruptly narrowed to elongate dark brown tapering point distally ( Fig. 4 View FIGURE 4 c)............. S. parkeri View in CoL sp. nov.
- Cercus elongate and digitiform ( Figs 1 View FIGURE 1 d, f); tibia I white with ivory colored vestiture; postpedicel various.............. 3
3 Wing apex brown, and posterior membrane reduced near apex so vein M forms the posterior margin ( Fig. 1 View FIGURE 1 e); CuAx ratio> 1.0................................................................................. S. maculipennis View in CoL sp. nov.
- Wing hyaline, unmodified ( Fig. 1 View FIGURE 1 c); CuAx ratio <0.7.................................... S. flavifemoratus View in CoL sp. nov.
4 All femora with at least some brown cuticle; postpedicel elongate, triangular and tapering gradually.................. 5
- Femora I and II yellow, and only femur III with brown cuticle distally; postpedicel various.......................... 6
5 Both tibiae I and III with white cuticle and short ivory colored vestiture; tibia II yellow with brownish vestiture ( Fig. 4 View FIGURE 4 a); cer- cus elongate and projecting well beyond surstylus ( Fig. 4 View FIGURE 4 b).................................... S. eboritibia View in CoL sp. nov.
- Tibia I only with white cuticle and ivory colored vestiture; tibia II yellow and tibia III brownish ( Fig. 1 View FIGURE 1 a); cercus and short and digitiform, not extending beyond surstylus ( Fig. 1 View FIGURE 1 b)............................................ S. tenorio View in CoL sp. nov.
6 Vein M apically bent and forming sharp point on wing margin ( Fig. 3 View FIGURE 3 a); tibia III entirely yellow; postpedicel gradually taper- ing; tibia and tarsus I with ivory colored vestiture; cercus flagellate with long setae ( Fig. 3 View FIGURE 3 b)........ S. divericatus View in CoL sp. nov.
- Vein M and R4+5 subparallel and wing margin entire; tibia III with some brown cuticle; other features various........... 7
7 Tibia I with normal short black vestiture; segment 7 (hypopygial peduncle) elongate, almost twice length of epandrium ( Fig. 3 View FIGURE 3 c), cercus elongate and clavate with subapical field of strong pale setae ( Fig. 3 View FIGURE 3 d).................... S. zurqui View in CoL sp. nov.
- Tibia I with some ivory colored vestiture, segment 7 subequal in length to epandrium; cercus elongate with only short pale setae............................................................................................... 8
8 Tibia I only with ivory-colored vestiture on anterior face; tibia III with brown cuticle only on distal quarter ( Fig. 2 View FIGURE 2 a), surstylus squarish with long dorsoapical projection ( Fig. 2 View FIGURE 2 b).......................................... S. emusorum View in CoL sp. nov.
- Femur, tibia and tarsus I almost entirely covered with short ivory-colored vestiture; tibia III with brown cuticle on basal quarter and distal quarter ( Fig. 2 View FIGURE 2 c), surstylus elongate and curved ( Fig. 2 View FIGURE 2 d)............................. S. naranjensis View in CoL sp. nov.
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.