Two new freshwater enchytraeid species (Oligochaeta) from the Italian Alps

Figures & data

Figure 1 Cernosvitoviella longiducta n. sp. a, brain; b, coelomocytes; c, sperm funnel.

Figure 2 Cernosvitoviella longiducta n. sp. Optical sections of coiled sperm duct (marked by arrows) and a “penial bulb” (pb).

Figure 3 Cernosvitoviella longiducta n. sp. Barrel‐shaped sperm funnel (sf) and beginning of sperm duct with roundnessess (marked by arrows).

Figure 4 Cernosvitoviella longiducta n. sp. male duct with a penial bulb.

Figure 5 Cernosvitoviella longiducta n. sp. spermatheca.

Figure 6 Cognettia valeriae n. sp. a, brain; b, coelomocytes; c, nephridium; d, penial bulb.

Figure 7 Cognettia valeriae n. sp. Details of spermatheca (marked by arrows): a, spherical enlargement of ampulla; b, final globular chamber.

Figure 8 Cognettia anomala, C. paxi, C. valeriae n. sp. Comparison of the shape of spermathecae. a, C. anomala (after Dumnicka 1976); b, C. paxi (after material from Careser stream, Italy, leg. V. Lencioni and B. Maiolini, det. E. Dumnicka); c, C. valeriae n. sp.

Table I. Comparison of taxonomic characters in Cognettia species having more than three pairs of pharyngeal glands.

Species	Setal formula	Pharyngeal glands (primary+secondary)	Localization of spermatheca	Glands at ectal orifice of spermatheca	Localization of male pore	Seminal vesicle
C. sphagnetorum	2.3–2.3:2.3–2.4	5+0	V–VII, V–IX, rarely in V	1 stout	IX, rarely in VIII	Well‐developed in VIII
C.glandulosa	2.3–2.3:3–3	5+4	V–VII, V–IX	1 small	IX, rarely in VIII	Well‐developed in VIII
C. anomala	2.3–2.3:3–3	5+2	V	1 small	X	Absent or small in IX
C. paxi	3–3:3–3	4+1	V	absent	X	Absent
C. valeriae sp. n.	2.3–2.3:3–3	5+2	V (VI)	1 small	X	Present in IX

Dumnicka , E. 1976 . Oligochaetes (Oligochaeta) of some streams of the High Tatra Mts and of the River Białka Tatrzańska. . Acta hydrobiologica , 18 : 305 – 315 .

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