Review of the genus Caucaseuma Strasser, 1970, with the description of a new cavernicolous species from the Western Caucasus and an updated key and distribution (Diplopoda, Chordeumatida, Anthroleucosomatidae) Antić, Dragan Makarov, Slobodan European Journal of Taxonomy 2022 2022-05-13 819 1 90 107 7NWJJ Strasser, 1970 Strasser 1970 [599,962,832,860] Diplopoda Anthroleucosomatidae Caucaseuma Animalia Chordeumatida 12 102 Arthropoda genus    Key to the species of the genus Caucaseuma Strasser, 1970  (based on the anterior gonopods of males)    1. Anterior part of angiocoxites with a pair of distal notches ............................................................... 2  – Anterior part of angiocoxites without a pair of distal notches .......................................................... 5   2. Anterior parts of angiocoxites with a pair of anterior triangular processes ( Fig. 7H) ........................ ....................................................................................................................  C. strasseriAntić sp. nov.  – Without such processes ..................................................................................................................... 3   3. Medial projection of anterior part of angiocoxites fused distally ( Fig. 7C) ....................................... .....................................................................................................  C. minellii Antić & Makarov, 2016  – Medial projection of anterior part of angiocoxites not fused distally ............................................... 4   4. Lateral projections of angiocoxites distally rounded; smaller species, 11 mm( Fig. 7E) ................... ....................................................................................................  C. kelasuri Antić & Makarov, 2016  – Lateral projections of angiocoxites distally in the form of elongated processes strongly curved posteriad; larger species, 16–17 mm( Fig. 7F) ....................................  C. lohmanderi Strasser, 1970   5. Anterior part of angiocoxites with two distinctive, bifurcated, posterior projections/processes (see Antić & Makarov 2016: 31, fig. 20b, c, bp1 and bp2; Fig. 7A) ......................................................... ..............................................................................................  C. elephantum Antić & Makarov, 2016  – Without such posterior projections/processes ................................................................................... 6   6. Anterior parts of angiocoxites with a deep V-shaped incision distally ( Fig. 7B) ................................ ........................................................................................  C. fanagoriyskaya Antić & Makarov, 2016  – Anterior parts of angiocoxites without a deep V-shaped incision distally ........................................ 7   7. Margins of the anterior parts of angiocoxites circular ( Fig. 7D) ........................................................ ...........................................................................................  C. glabroscutum Antić & Makarov, 2016  – Margins of the anterior parts of angiocoxites subquadrangular ( Fig. 7G) .......................................... ...................................................................................................  C. variabile Antić & Makarov, 2016  To easily distinguish all eight species of the genus  Caucaseuma, see also Figure 7.  (based on the anterior gonopods of males)    1. Anterior part of angiocoxites with a pair of distal notches ............................................................... 2  – Anterior part of angiocoxites without a pair of distal notches .......................................................... 5   2. Anterior parts of angiocoxites with a pair of anterior triangular processes ( Fig. 7H) ........................ ....................................................................................................................  C. strasseriAntić sp. nov.  – Without such processes ..................................................................................................................... 3   3. Medial projection of anterior part of angiocoxites fused distally ( Fig. 7C) ....................................... .....................................................................................................  C. minellii Antić & Makarov, 2016  – Medial projection of anterior part of angiocoxites not fused distally ............................................... 4   4. Lateral projections of angiocoxites distally rounded; smaller species, 11 mm( Fig. 7E) ................... ....................................................................................................  C. kelasuri Antić & Makarov, 2016  – Lateral projections of angiocoxites distally in the form of elongated processes strongly curved posteriad; larger species, 16–17 mm( Fig. 7F) ....................................  C. lohmanderi Strasser, 1970   5. Anterior part of angiocoxites with two distinctive, bifurcated, posterior projections/processes (see Antić & Makarov 2016: 31, fig. 20b, c, bp1 and bp2; Fig. 7A) ......................................................... ..............................................................................................  C. elephantum Antić & Makarov, 2016  – Without such posterior projections/processes ................................................................................... 6   6. Anterior parts of angiocoxites with a deep V-shaped incision distally ( Fig. 7B) ................................ ........................................................................................  C. fanagoriyskaya Antić & Makarov, 2016  – Anterior parts of angiocoxites without a deep V-shaped incision distally ........................................ 7   7. Margins of the anterior parts of angiocoxites circular ( Fig. 7D) ........................................................ ...........................................................................................  C. glabroscutum Antić & Makarov, 2016  – Margins of the anterior parts of angiocoxites subquadrangular ( Fig. 7G) .......................................... ...................................................................................................  C. variabile Antić & Makarov, 2016  To easily distinguish all eight species of the genus  Caucaseuma, see also Figure 7.