http://www.collembola.org/key/rat/cyphidae.htm - Last updated on 2008.05.18 by Frans Janssens

Peter F. Bellinger (), Department of Biology, California State University, Northridge, CA 91330, USA
Kenneth A. Christiansen, Department of Biology, Grinnell College, PO Box V3, Grinnell, IA 50112-0806, USA

Invalid names in brackets. Valid junior synonyms in parentheses.

This list of generic names, the assignment of status, and the associated key are tentative. Comments and corrections are solicited.

Family Cyphoderidae

The basic reference is Delamare, 1948. More recent revisional studies, e.g. by Yoshii, 1992, have introduced potentially useful characters which cannot be used at presence because of ignorance of their state in many previously described species.

We make no pretense that the genera we present here are monophyletic.

The intense selection pressure of the termitophile and myrmecophile life styles are so great and consistent that they probably lead to extensive convergent evolution. Detailed review of chaetotaxy and other characters of all type species at least will be needed before valid genera can be created.

Beckia see Cyphoderus.

Borecus Folsom, 1923

Type species pinnatus Folsom, 1923 ^{Footnote 1} Mimoderus Yoshii, 1980
- Type species saikehi Yoshii, 1980.

[Calobatana] see Calobatinus. Junior objective synonym

[Calobatella] see Calobatinus. Junior homonym

Calobatinus Silvestri, 1918

Type species Calobatella rhadinopus Börner, 1913 ^{Footnote 2}

[Calobatella Börner, 1913, nec Mick, 1898

- Type species

Calobatella rhadinopus Börner, 1913]

[Calobatana Strand, 1928

Type species Calobatella rhadinopus Börner, 1913]

[Calobatina of Denis, 1942, lapsus for Calobatana]invalid spelling

Cephalophilus Delamare, 1948

Type species rectangularis Delamare, 1948

[Cyphodeirus] see Cyphoderus

[Cyphoderella Absolon & Kseneman] see Cyphoderus

[Cyphoderella Boerner] see Pseudocyphoderus

Cyphoderinus Denis, 1942

Type species fraterculus Denis, 1942.

Cyphoderodes Silvestri, 1911

Type species ceylonicus Silvestri, 1911 ^{Footnote 3}

Cyphoderus Nicolet, 1842

Type species albinus Nicolet,

[Cyphodurus Nicolet, 1841, nomen nudum]

[Cyphodeirus Nicolet, 1842, invalid original spelling - Opinion 291]

(Beckia Lubbock, 1870

- Type species argentea Lubbock, 1870)

[Cyphoderella Absolon & Kseneman, 1942 No type selected]

( Cyphoda Delamare, 1948

- Type species maroccanus [sic! This spelling is valid from Art. 32(b) of the International Code]] Delamare, 1948 ^{Footnote 4}

Delamarerus Mitra, 1977

Type species immsi Mitra, 1977 ^{Footnote 5}

Megacyphoderus Delamare, 1948

Type species Cyphoderus silvestrii Denis, 1925

Paracyphoderus Delamare, 1948

Type species Cyphoderus dimorphus Silvestri, 1911

Pseudocyphoderus Imms, 1912

Type species annandalei Imms, 1912 ^{Footnote 6}

[Cyphoderella Börner, 1913, nomen nudum]

Serroderus Delamare, 1948

Type species Cyphoderus distinctus Denis, 1942

(Setoderus Yosii, 1959

- Type species alfredi Yosii, 1959)

Setoderus see Serroderus

Footnote 1. We do not consider that the difference between quadridentate and multidentate mucrones justifies generic separation. However, it should be noted that the distinctive character of Borecus, the plumose dental setae, may be approached in some other species such as "Calobatinus" grassei and Cyphoderinus fraterculus, judging from published figures.
Footnote 2. The type species, C. rhadinopus, has a stylet-like mandible and a ventral mouth, and shares with two other members of the genus a distinctively long, shallow head. C. grassei Denis, 1942, placed here by Denis, differs from these in most respects and should probably go in a different genus.
Footnote 3. The type species lacks a mandibular molar plate but this is said to be present in other species. The distinctive character of a globular unguis is very likely a convergent adaptation to an endocommensal life style; if we use this characteristic as diagnostic of the genus, as both Silvestri and Delamare do, six of the nine species which have been placed in this genus do not belong here.
Footnote 4. The only character separating Cyphoda from typical Cyphoderus is the length of the mucro relative to the dens, and this character is too variable within species to be reliable (Christiansen, 1957)
Footnote 5. The multidentate ungual apex is distinctive; Pseudocyphoderus machadoi Delamare, 1958 has been placed here, but differs in this respect
Footnote 6. P. machadoi Delamare, 1958 differs from the type and other species in having a long tridentate mucro.