Micronella

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Taxonavigation

Ordo: Poduromorpha
Familia: Brachystomellidae

Name

Micronella Arlé, 1959 – Wikispecies link – Pensoft Profile

• Brachystomella Syn. Agren, 1903 ad. part.
• Salmonella Stach 1949 ad. part.

Type species

Brachystomella porcus Denis, 1933.
Diagnosis. Pigmentation absent. Antennae shorter than head diagonal. Ant IV with dorsolateral microsensillum and round subapical organite; apical vesicle simple. Eyes absent. PAO with 6–15 vesicles. Maxilla typical of Brachystomella, with 5–7 teeth. Unguis tooth present or absent; tenent hair acuminated. Ventral tube with 3+3 chaetae. Furcal area delimited by a circular region of primary granulation of the tegument and a set of six chaetae within it. Table 1 summarizes the main characters of the species of the genus.

Table 1. Main characters of species of Micronella Arlé, 1959.

Species	checayensis Massoud, 1967	porcus (Denis, 1933)	itacaman sp. n.	longisensilla sp. n.
Ant IV sensilla	?	6	5	4
Shape of sensilla of Ant III organ	curved, opposite sense	“club”	one bilobed, one “club”	“cloverleaf”
PAO vesicles	15	6–8	7–8	12–13
Ratio ordinary chaetae: sensilla	?	1:1.3	1:1	1:2
Serrated chaetae on body	?	–	+	–
Unguis tooth	+	–	+†	–
Type Locality	Peru	Costa Rica	Brazil (southeast)	Brazil (RJ)

Key to the species of Micronella Arlé, 1959

Key to the species of Micronella Arlé, 1959 — G. Queiroz , M. Mendonça

1		PAO with up to 13 vesicles; unguis without or with minute inner tooth    2
–		PAO with 15 vesicles, unguis with inner tooth    Micronella checayensis Massoud, 1967
2		PAO with up to 8 vesicles; ratio chaetae: sensilla approximatelly 1:1    3
–		PAO with 12–13 vesicles; ratio chaetae: sensilla = 1:2    Micronella longisensilla sp. n.
3		Ant IV with six sensilla; smooth chaetae on body; unguis without inner tooth    Micronella porcus (Denis, 1933)
–		Ant IV with five sensilla; serrated chaetae on body; unguis of Tita I and II with minute inner tooth    Micronella itacaman sp. n.

Taxon Treatment

• Queiroz, G; Mendonça, M; 2013: New species of Brachystomellidae and characterization of Micronella porcus (Denis, 1933) from Brazil ZooKeys, 316: 81-98. doi