Lanceola Say 1818
Creators: name: Zeidler, Wolfgang
Publisher: name: Zenodo
Year: 2009
Subjects: Biodiversity
Taxonomy
Plantae
Chlorophyta
Chlorophyceae
Sphaeropleales
Characiaceae
Lanceola

description: Key to the species of the genus Lanceola   
 1. Pereopods 3 & 4; dactylus length about 0.75x propodus .......................................... L. longidactyla Vinogradov, 1964   
- Pereopods 3 & 4; dactylus length much less than 0.5x propodus.................................................................................2  
 2. Pereopods 3 & 4 subchelate, formed by narrow, curved propodus folded against enlarged carpus, with row of strong setae along posterior margin ........................................................................................... L. chelifera Vinogradov, 1970   
- Pereopods 3 & 4 not subchelate, with normal, relatively narrow carpus and propodus...............................................3  
3. Pereopod 5; dactylus not fully retractile, only partly hooded.......................................................................................4  
- Pereopods 5–7 all with similar, fully retractile and hooded dactyls.............................................................................6  
 4. Pereopods 6 & 7; only proximal part of dactylus retractile .................................................. L. falsa Vinogradov, 1970   
- Pereopods 6 & 7 with normal, fully retractile and hooded dactyls...............................................................................5  
 5. Pereopod 5 weakly subchelate, formed by partly hooded, curved dactylus pressed against anterior margin of slightly distally swollen propodus. Antennae 2 slightly longer than A1 ................................... L. sphaerica Vinogradov, 1957   
 - Pereopod 5; dactylus relatively straight, not hooded, partly retractile proximally. Antennae 2 slightly shorter than A1 ........................................................................................................................................................... L. gruneri sp. nov.   
 6. Antennae 2; distal peduncular article with distinct lobe overlapping almost half following article medially............... ...................................................................................................................................... L. intermedia Vinogradov, 1960   
- Antennae 2; distal peduncular article without medial lobe or with relatively small lobe.............................................7  
 7. Pereopod 7; length about 0.75x P6. Antennae 2 only slightly longer or subequal in length to A1................................ ................................................................................................................................................. L. clausi Bovallius, 1885   
- Pereopod 7; length about 0.5x P6. Antennae 2 considerably longer than A1...............................................................8  
8. Telson shorter than peduncle of U3..............................................................................................................................9  
- Telson as long or longer than peduncle of U3.............................................................................................................11  
 9. Telson length about 0.5x peduncle of U3 ............................................................................... L. loveni Bovallius, 1885   
- Telson length about 0.75x (or more) peduncle of U3.................................................................................................10  
 10. Pereonite 6 to urosomite 1 produced into dorsal denticles. Gnathopod 1; carpus with broadened distal margin, at least twice width propodus. Eyes reniform ........................................................................... L. serrata Bovallius, 1885   
 - Pereonites, pleonites and urosomites without dorsal denticles. Gnathopod 1; carpus with distal margin only slightly wider than propodus. Eyes with crystalline cones .................................................................. L. felina Bovallius, 1885   
 11. Pereopod 5; merus broadened, elongated-oval. Pleonite 1 with dorsal depression....... L. laticarpa Vinogradov, 1957   
- Pereopod 5; merus linear, not broadened. Pleonite 1 without dorsal depression........................................................12  
 12. Head without rostrum. Pereopods 3–5; anterodistal corner of merus produced into small, sharp corner. Eyes reniform .............................................................................................................................................. L. pacifica Stebbing, 1888   
- Head produced into distinct hook-shaped or rounded rostrum. Pereopods 3–5; anterodistal corner of merus not noticeably produced. Eyes with crystalline cones..................................................................................................... 13  
 13. Head produced into hook-shaped rostrum. Antennae 1; distal three articles fused. Pereopod 6; merus linear, without anterior bulge ........................................................................................................................ L. sayana Bovallius, 1885   
 - Head produced into broad, rounded rostrum. Antennae 1; distal articles separate. Pereopod 6; merus with distinct anterior, medial bulge .................................................................................................................... L. galatheae sp. nov.
description: Published as part of Zeidler, Wolfgang, 2009, A review of the hyperiidean amphipod superfamily Lanceoloidea Bowman & Gruner, 1973 (Crustacea: Amphipoda: Hyperiidea), pp. 1-117 in Zootaxa 2000 on pages 11-12