| Checklist of the Collembola: Key to the species of Pseudanurida |
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This key is still under construction. Note that missing figures will be provided as soon as possible. Currently, the key is in the feasibility study phase to find out how to integrate in the checklist in a modular way a key that has been generated with DELTA.
1(0). Claw with appressed tooth more distal in position or without;
dens with 6 setae; dorsal lobe of sixth abdominal segment
without ventral setae; epipharynx apically cleft; fifth
abdominal segment with a ventral single row................. 2
Claw with strong basal tooth; dens with 12 setae; dorsal lobe of
sixth abdominal segment with many ventral setae; epipharynx
square-ended; fifth abdominal segment with many ventral setae
before the genital field........................ billitonensis
2(1). Head with strongly differentiated macrochaetae; sixth abdominal
segment with many setae on dorsal valve, including median
unpaired setae in the anterior and posterior rows; ventral
tube without setae on the valves............... bogoyawlenskyi
Head without strongly differentiated macrochaetae; sixth
abdominal segment with 3 + 3 dorsal setae, median unpaired
setae absent; ventral tube with 1 + 1 setae placed far
anteriorly on the valves.................................... 3
3(2). Mucro with posterior lamella supported by a toothlike strut;
sixth abdominal segment tapered cylindrical, without
differentiation into dorsal and lateral anal valves, although
the corresponding seta tracts are clearly distinguishable;
tegumental bleeding sites present on head, first abdominal
segment and fourth abdominal segment; tenaculum with both
anterior and posterior lobes of corpus elevated beyond rami...
........................................................ yini
Mucro without supporting strut on posterior lamella; sixth
abdominal segment with dorsal and ventral anal valves clearly
separated by indentations; tegumental bleeding sites not
differentiated; tenaculum with only the anterior lobe
elevated.................................................... 4
4(3). Setae p2 on fifth abdominal segment and p3 on first to third
abdominal segment more than 2 times length of other setae;
general body setae short; third antennal segment and fourth
antennal segment short and compact; males with sixth abdominal
segment as in female................................. sawayana
Setae p2 on fifth abdominal segment and p3 on first to third
abdominal segment not longer then other setae; general body
setae strong; third antennal segment and fourth antennal
segment elongate in adult; males with sixth abdominal segment
greatly elongate..................................... glauerti