Bee Mites : Acari : Acariformes : Sarcoptiformes : Chaetodactylidae : Sennertia : Sennertia species
Sennertia sayutara Klimov and OConnor, 2007
Sennertia sayutara Klimov & OConnor in Klimov et al., 2007b: 122, Figs 9, 10; Klimov & OConnor, 2008: 161, Figs 80-81.
Material (show database records). Holotype: HDN - COSTA RICA: San José, San José, 28 Mar 1909, no collector, ex Ceratina laticeps, in metasomal acarinarium, AMNH 25499, BMOC 04-0508-284. Paratypes: 2 HDNs, same data; 2 HDNs – same data, AMNH 24499, BMOC 04-0508-283. Holotype in AMNH, paratypes in AMNH, UMMZ.
Description. Phoretic deutonymph. Gnathosomal solenidia distinctly shorter than 1/3 of femur I width. Supracoxal setae scx situated on separate small sclerite. Hysterosomal shield distinctly expanded beyond lateral gland opening and bases of setae f2. Lateral edges of hysterosomal shield in anterior part not narrowing, rounded. Dorsal hysterosomal pouch absent. Distance between anterior margin of hysterosomal shield and setae si exceeding diameter of si bases. Striate pattern of idiosomal cuticle outside hysterosomal shield without sclerotization; at posterior end of hysterosomal shield nearly uniformly parallel. Striae long. Distinct rudiments of vi present, situated at level of se. Setae si distinctly posterior se. Setae si exceeding slightly longer than se, as thick as se. Setae c1 long, nearly as long as se, distinctly longer than d1-h1, situated on anterior edge of hysterosomal shield. Setae c3 nearly spiniform, situated on weakly developed, small sclerite. Setae cp not reaching im and setae e2. Setae d1 and e1 nearly uniform in length with h1. Setae d1 situated on hysterosomal shield. Sclerite between ia and d2 absent. Setae e2 subequal with d2. Setae e2 not touching hysterosomal shield. Setae h3 non-applicable. Setae h3 non-applicable. Lateral gland openings situated on hysterosomal shield. Setae pR I-II, sR III, wF IV, gT I-II, kT III filiform. Setae 1a, 4b, and 3a conoidal; g and 4a spiniform, with attenuated tips. Posterior apodemes II and anterior apodemes III partially fused. Anterior apodemes IV not interrupted, almost straight. Posterior apodeme IV present, not connected to anterior apodeme III. Conoids ps2 posterior to anterior transverse level of central suckers (ad1+2). Conoids ps2 anterior to ps1, situated outside outer level of ad1+ ad2. Suckers ad3 not enlarged, smaller than central suckers, without rough sclerotization. Posterior and lateral borders of attachment organ not forming distinct frame. Sclerotized rudiment of anterior cuticular suckers present, very small. Posterio-medial longitudinal hysterosomal sclerite present, long. Ventral hysterosoma smooth. Genual setae mG I-II simple, shorter than leg II, but longer than femur II. Tarsal setae la I-II microsetae. Tarsal setae ra I-II not bifid, spiniform. Tarsal setae wa I-II spiniform, bifid apically, s III spiniform, simple. Tarsal setae d I-II foliate, shorter than f I-II. Tarsal setae d and f I not touching. Solenidion ω3 closer to f I than to ω1. Posterior condylophore present. Anterior condylophore I-II with distal bending. Setae sR III not protruding femur III. Seta d III situated shifted from tarsal base, distance distinctly exceeding diameter of d III alveolus. Leg IV protruding posterior edge of hysterosoma. Tarsus IV not enlarged, shorter than width of trochanter IV. Setae w IV almost as 1/2 of d IV width, distinctly longer than leg IV. Setae w IV situated on middle of tarsus IV. Setae s IV present, very short. Setae wF IV not protruding tibia IV. Other instars unknown.
Variation. Sclerites surrounding alveoli of 4b fused (BMOC 04-0508-284#1, 3, -283#1, 2) or separated (BMOC 04-0508-284#2). Sclerites surrounding alveoli of 1a fused with proximal acetabular extension of apodeme I (BMOC 04-0508-284#1, 3, -283#1, 2) or free (BMOC 04-0508-284#2).
Hosts. Ceratina laticeps.
Distribution (Show map). Costa Rica: San Jose.
Etymology. The specific name is an arbitrary combination of letters, considered as a noun.
Biology. Found in the metasomal acarinarium of the host.
References
Klimov, P. B. & B. M. OConnor. 2008. Morphology, evolution, and host associations of bee-associated mites of the family Chaetodactylidae (Acari: Astigmata), with a monographic revision of North American taxa. Miscellaneous Publications Museum of Zoology University of Michigan.199: 1-243.
Klimov, P. B., S. B. Vinson & B. M. OConnor. 2007. Acarinaria in associations of apid bees and chaetodactylid mites. Invertebrate Systematics.21: 109-136.
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Created: May 26, 2011
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