diff --git a/tests/default_options/SPECIES/SPECIES_050 b/tests/default_options/SPECIES/SPECIES_050
new file mode 100644
index 0000000000000000000000000000000000000000..cd31071d77da59e030f5fc1c302f7d8871576192
--- /dev/null
+++ b/tests/default_options/SPECIES/SPECIES_050
@@ -0,0 +1,17 @@
+&SPECIES_PARAMS
+ PSPECIES="DUST-1um        ",
+ PCRAIN_AERO=  1.00000000    ,
+ PCSNOW_AERO=  1.00000000    ,
+ PCCN_AERO= 0.150000000    ,
+ PIN_AERO= 0.020000000    ,
+ PRELDIFF= -9.89999962    ,
+ PHENRY=  9.99999972E-10,
+ PF0=  0.00000000    ,
+ PDENSITY=  2650.00000    ,
+ PDQUER=  9.99999997E-07,
+ PDSIGMA=  1.10000002    ,
+ PAREA_DOW= 7*1.00000000      ,
+ PAREA_HOUR= 24*1.00000000      ,
+ PPOINT_DOW= 7*1.00000000      ,
+ PPOINT_HOUR= 24*1.00000000      ,
+ /
diff --git a/tests/default_options/SPECIES/SPECIES_051 b/tests/default_options/SPECIES/SPECIES_051
new file mode 100644
index 0000000000000000000000000000000000000000..47bc33e811b8bf413ab4d250329da85a005a5684
--- /dev/null
+++ b/tests/default_options/SPECIES/SPECIES_051
@@ -0,0 +1,16 @@
+&SPECIES_PARAMS
+ PSPECIES="DUST-5um        ",
+ PCRAIN_AERO=  1.00000000    ,
+ PCSNOW_AERO=  1.00000000    ,
+ PCCN_AERO= 0.150000000    ,
+ PIN_AERO= 0.020000000    ,
+ PHENRY=  9.99999972E-10,
+ PF0=  0.00000000    ,
+ PDENSITY=  2650.00000    ,
+ PDQUER=  4.99999987E-06,
+ PDSIGMA=  1.10000002    ,
+ PAREA_DOW= 7*1.00000000      ,
+ PAREA_HOUR= 24*1.00000000      ,
+ PPOINT_DOW= 7*1.00000000      ,
+ PPOINT_HOUR= 24*1.00000000      ,
+ /