Lasioacarus

 

HARMFUL | NOT HARMFUL | UNCERTAIN

lives in honey bee nests and disperses on adult bees, but its effect on bees is unknown

Name and classification

Lasioacarus Kadzhaja and Sevastianov, 1967

Taxonomy
Superorder Acariformes » Order Sarcoptiformes » Suborder Oribatida » Infraorder Desmonomata » Hyporder Astigmata » Family Acaridae » Genus Lasioacarus

Type species
Lasioacarus nidicolus Kadzhaja and Sevastianov, 1967

Diagnosis

Female: With one pair of distinct pits anterolateral to anus (Fig. 11).

Other diagnostic characters

Phoretic deutonymph: Tarsal setae aa I, ba I-II absent (Fig 6). Supracoxal setae scx bifurcate apically (Fig. 5). External conoidal setae of attachment organ (ps2) lateral to median sucker (ad1+2) (Fig. 4). Sternal apodeme and anterior apodemes II not extending to level of coxal apodemes III (Fig. 4). Genua III-IV subequal to tibiae III-IV (Fig. 7). Empodial claws of pretarsi I-IV similar in form, long, at least half the length of tarsus (Fig. 7). Solenidion ω2 of tarsus I present (Fig. 6). Tarsal setae e I-II with apical "saucer" slightly expanded (Fig. 6). Posterior setae of genua I-II (mG) stout and spine-like, smooth (Fig. 6). Tibiae I-II similar in length (Fig. 6). Internal vertical setae (vi) unbarbed (Fig. 5). External vertical setae (ve) absent (Fig. 5). Bases of internal vertical setae (vi) nearly contiguous (Fig. 5). Posterior setae of tibia I-II (hT I-II) absent (Fig 6). Setae nG III and solenidion σ III absent from genu III (Fig. 7). Coxal setae I-IV 1a, 3a, 4a conoidal Fig. 4). Dorsal hysterosomal setae short and filiform (Fig. 3).

Adult: Tarsal setae aa I, ba I-II absent (correlates with characters in phoretic deutonymph) (Figs. 12, 13 , 14). Setae ve and si absent (Fig. 10). Supracoxal setae scx present (Fig. 10). Male without sclerotized posterior projection.

Distribution

Palaearctic and Oriental regions

Bee hosts

honey bees (Apis)

Host association level

Permanent

associated exclusively with bees or their close relative, wasps; cannot live without these hosts

Temporary

some life stages are associated with bees, while others are not

Facultative or opportunistic

can complete entire life cycle without bees or their close relative, wasps

permanent

Host associations, feeding, and dispersal

  • All stages live in nests of honey bees, probably feeding on pollen, bee bread, and beehive debris.
  • Mite phoretic deutonymphs disperse on adult bees, usually attaching to the hind tibia and tarsi (Fig. 15).

Biology

Lasioacarus nidicolus was found in the nest of an ant, Lasius niger, in Ukraine. Later this species was collected from beehives (Apis mellifera) in Poland as part of a large-scale survey, where its occurrence was 4.9% (Chmielewski, 1991c). In controlled laboratory experiments, the mite preferred beehive debris over bee bread, pollen, comb and wax, and mold (fungi); it did not reproduce on honey, royal jelly, propolis, or dead brood bees (Chmielewski, 1991c).

Another species, Lasioacarus morsei, is associated with the giant honey bee Apis dorsata from the Philippines (El-Banhawy and Abou-Awad, 1990).