a. * ZABOLOTZKYI
b. BECKIDIA - SÆTHER 1977B: 120 (as BECKIELLA); 1979D: 315 (generic placement).
c. GOETGHEBUER 1938A: 57 - as CHIRONOMUS (CRYPTOCHIRONOMUS).
d. PALAEARCTIC - Peterhof, Leningrad, U.S.S.R. (RUSSIA)e. GOETGHEBUER 1937-54(13c): - as T. (CRYPTOCHIRONOMUS).  FITTKAU, SCHLEE & REISS 1967A: 371 - as CRYPTOCHIRONOMUS.  PINDER & REISS 1983: 303; ASHE & CRANSTON 1990: 255 - as BECKIDIA.

a. $ ZAVRELI
b. CHIRONOMUS, uncertain species - GOETGHEBUER 1937-54(13c): 30 (as TENDIPES).
c. KIEFFER 1922G: 79 - as CHIRONOMUS, on basis of adult.
.d. PALAEARCTIC - Boheme, CZECHOSLOVAKIA.
e. ASHE & CRANSTON 1990: 268 - as Nomen dubium in CHIRONOMUS.

a. $1 ZEALANDICUS
b. CHIRONOMUS (S.S.) - FREEMAN 1959A: 424.
c. HUDSON 1892: 43 - as CHIRONOMUS, on basis of adult, but with note that it was reared from material with salinarius-type larva.
d. OCEANIA - Christchurch, NEW ZEALAND.
e. HUTTON 1902A:181. ROBB 1966A: 85; FORSYTH 1971A: 123 - thummi & salinarius larval forms.  FORSYTH 1978A: 42 - Salinarius form called Sp. a.

a. $2 ZEALANDICUS
b. CHIRONOMUS ZEALANDICUS HUDSON
c. HUTTON - incorrect author designation for ZEALANDICUS HUDSON by KIEFFER 1906C: 23.
d. NEW ZEALAND.
e.

a. $ ZERNYI
b. ?SYN: DORSALIS nec MEIGEN - ASHE & CRANSTON 1990: 261.
c. GOETGHEBUER 1931D: 102 - as CHIRONOMUS, on basis of adult male.
d. PALAEARCTIC - Apetlon, Burgenland, AUSTRIA (Type in Museum Natural History Vienna).
e. GOETGHEBUER 1937-54(13c): 23 - as syn ALPESTRIS GOETGHEBUER.

a. * ZONARIUS
b. SYN: MICROTENDIPES CONFINIS MEIGEN - CRANSTON 1976A: 145.
c. WALKER 1856B: 176 - as CHIRONOMUS.
d. PALAEARCTIC - ENGLAND
e. ASHE & CRANSTON 1990: 289 - as syn M. CONFINIS.

a. *1 ZONATUS
b. SYN: PSECTROTANYPUS VARIUS - FITTKAU 1962A: 134.
c. FABRICIUS 1775A: 753 (FITTKAU lists as 1794A) - as CHIRONOMUS.
d. PALAEARCTIC - SCANDINAVIA, RUSSIA, GERMANY, ENGLAND, FRANCE.
e.

a. #2 ZONATUS
b. Nomen dubium in CHIRONOMINI - ASHE & CRANSTON 1990: 319.
c. SCHRANK 1803A: 71 - as TIPULA.  Transferred to CHIRONOMUS by?
d. PALAEARCTIC - GERMANY.
e. KIEFFER 1906C: 23 - as CHIRONOMUS.

a. * ZONOPTERUS
b. SYN: STENOCHIRONOMUS HILARIS - BORKENT 1984: 69.
c. MITCHELL 1908A: 12 - as CHIRONOMUS.
d. NEARCTIC - Clementon, N.J., U.S.A.
e. TOWNES 1945A: 91 - as syn. S. TAENIAPENNIS.

a. $ ZONULUS
b. SYN: RIPARIUS - GRIPEKOVEN 1913A: 164 (as TENDIPES).
c. ZETTERSTEDT 1838A: 810 - as CHIRONOMUS.
d. PALAEARCTIC - Lapponia Umensi ad Lycksele et ad Torneå, SWEDEN.
e. ASHE & CRANSTON 1990: 264 - as syn. RIPARIUS.