Elbenia
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publication ID |
https://doi.org/ 10.11646/zootaxa.3826.2.3 |
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publication LSID |
lsid:zoobank.org:pub:0ECFD0E6-BB56-47ED-88AE-D417E215D2B8 |
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DOI |
https://doi.org/10.5281/zenodo.5629665 |
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persistent identifier |
https://treatment.plazi.org/id/03DA87E0-EB3D-FF86-56DE-F9FFFA539517 |
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treatment provided by |
Plazi |
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scientific name |
Elbenia |
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Key to Elbenia species (males only)
( Figs. 2–4 View FIGURE 2 View FIGURE 3 View FIGURE 4 )
Nineteen species is known from this Southeast Asian genus. The male of E. dyscrita Karny , E. makilingae Hebard and E. manilensis Pictet are however not known. The females for most species of the genus are not known and as such, omitted from the key.
1. Distribution: Philippines................................................................................ 2
- Distribution: Sundaland (Malay Peninsula, Borneo, Sumatra and Java)........................................... 3
2. Tenth abdominal segment with apical lobes rounded at apex ( Fig. 2 View FIGURE 2 A). Cerci shorter, not surpassing apex of subgenital plate ( Fig. 2 View FIGURE 2 A). Subgenital plate bilobed, elongated and recurved towards abdomen, distal part internally serrated ( Fig. 2 View FIGURE 2 A)......................................................................................... E. serraticauda Hebard
- Tenth abdominal segment with apical lobes acute at apex ( Fig. 2 View FIGURE 2 B). Cerci longer, surpassing apex of subgenital plate. Subgenital plate rectangular and short, not serrated..................................... E. modesta Brunner von Wattenwyl
3. Tenth abdominal segment with two apical lobe elongated and process-like, often spinose ( Figs. 3 View FIGURE 3 A–3E)................. 4
- Tenth abdominal segment with or without apical lobes, when present, not process-like ( Figs. 3 View FIGURE 3 F– 3I).................... 8
4. Tenth abdominal segment with apical lobe projecting near lateral margins, forming a wide-roundly excision in the middle ( Figs. 3 View FIGURE 3 A, 3B). Subgenital plate roundly emarginated only at tip, forming small rounded lobes at apex ( Figs. 4 View FIGURE 4 A, 4B)...... 5
- Tenth abdominal segment with apical lobe projecting medially, narrowly excised in between ( Figs. 3 View FIGURE 3 C–3E). Subgenital plate more deeply excised, forming elongated lobes............................................................... 6
5. Cerci shorter, distally curved dorsad ( Fig. 2 View FIGURE 2 C). Subgenital plate with apical lobes rounded at apex, with short internal process, not densely covered with bristles ( Figs. 2 View FIGURE 2 C, 4A).............................................. E. bispinosa Karny
- Cerci longer, distally curved dorsad, then curved posteriorly ( Fig. 2 View FIGURE 2 D). Subgenital plate with apical lobes more angular at apex, without short internal process, densely covered with bristles ( Figs. 2 View FIGURE 2 D, 4B).......................... E. javanica Karny
6. Tenth abdominal segment with apical lobe finger-shaped, truncated apically ( Fig. 3 View FIGURE 3 C). Subgenital plate with incised margin sinuous................................................................................. E. digitata Karny
- Tenth abdominal segment with apical lobe spine-like, acute apically ( Figs. 3 View FIGURE 3 D, 3E). Subgenital plate with incised margin not sinuous.............................................................................................. 7
7. Cerci longer, about twice the length of apical lobes; strongly curved inward, apex simple ( Fig. 3 View FIGURE 3 D). Subgenital plate with apical lobes parallel and straight; apex with inner margin not denticulated............................ E. nigrosignata Stål
- Cerci shorter, less than twice the length of apical lobes; gently curved inward, apex pointed outward ( Fig. 3 View FIGURE 3 E). Subgenital plate with apical lobes narrow and sinuous (and crossing each other) at distal half; apex with inner margin denticulated................................................................................................ E. robinsoni Karny
8. Tenth abdominal segment with distinct apical lobes short and truncated ( Figs. 3 View FIGURE 3 F– 3I)................................ 9
- Tenth abdominal segment without apical lobe or with apical lobe fused.......................................... 13
9. Tenth abdominal tergite with apical lobes angularly excised in the middle; lobes diverging from one another............ 10
- Tenth abdominal tergite with apical lobes roundly excised in the middle; lobes not diverging from one another ( Fig. 3 View FIGURE 3 F)......................................................................................... E. pendleburyi Karny
10. Tenth abdominal tergite with apical lobes bifurcated distally ( Figs. 3 View FIGURE 3 G, 3H)....................................... 11
- Tenth abdominal tergite with apical lobes not bifurcated distally ( Fig. 3 View FIGURE 3 I)........................................ 12
11. Tenth abdominal tergite with apical lobes bifurcated into an inner sharp process and outer rectangular plate ( Fig. 3 View FIGURE 3 G). Subgenital plate with lobes smooth along inner margin............................. E. appendiculata Brunner von Wattenwyl
- Tenth abdominal tergite with apical lobes bifurcated into two sharp, black processes ( Fig. 3 View FIGURE 3 H). Subgenital plate with lobes serrated along inner margin................................................................. E. jacobsonii Karny
12. Tenth abdominal tergite with apical lobes obtusely blunt distally when viewed dorsally ( Fig. 3 View FIGURE 3 I); distad turned inwards and compressed when viewed laterally; with three teeth along apical margin when viewed laterally.......... E. smedleyi Karny
- Tenth abdominal tergite with apical lobes rectangular, truncated distally ( Fig. 5 View FIGURE 5 E); simple when viewed laterally ( Fig. 5 View FIGURE 5 F); without tooth along apical margin when viewed laterally ( Fig. 5 View FIGURE 5 F).................................... E. fraser sp. n.
13. Tenth abdominal segment with apical lobes fused or appearing fused along internal margins......................... 14
- Tenth abdominal segment without apical lobe.............................................................. 15
14. Tenth abdominal segment with apical lobes along inner margins fused to form a wider than long triangular apex. Subgenital plate with lobes curved dorsad and then recurved towards abdomen ( Fig. 2 View FIGURE 2 E)............ E. tenera Brunner von Wattenwyl
- Tenth abdominal segment with apical lobes short and finger-like, converging to fuse along inner margins at apex. Subgenital plate with lobes bent dorsad abruptly in the middle; bent horizontally backward apically ( Fig. 2 View FIGURE 2 F)............................................................................................. E. brevixipha Brunner von Wattenwyl
15. Subgenital plate not triangular, deeply split into two long and narrow cylindrical lobes, surpassing cerci; distal part curved dorsad and anteriorly ( Fig. 2 View FIGURE 2 G)............................................................... E. loliifolia (Haan)
- Subgenital plate triangular, without apical lobe; posteriorly margin excised or emarginated medially ( Figs. 4 View FIGURE 4 C, 4D)....... 16
16. Tenth abdominal segment with apical margin truncated. Subgenital plate acutely triangular, long and slender; sharply and more deeply excised at apex ( Fig. 4 View FIGURE 4 C)............................................................... E. fissa Karny
- Tenth abdominal segment with apical margin slightly emarginated behind. Subgenital plate long but broader; more bluntly emarginated at apex ( Fig. 4 View FIGURE 4 D)................................................................. E. fusca Karny
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