Sennertia loricata, phoretic deutonymph (holotype), ex Xylocopa micans, Florida, BMOC 04-0804-001
Fig. 1. Sennertia loricata, phoretic deutonymph (holotype), ex Xylocopa micans, Florida, BMOC 04-0804-001 Click to enlarge

Bee Mites : Acari : Acariformes : Sarcoptiformes : Chaetodactylidae : Sennertia : Sennertia species

Sennertia loricata Klimov and OConnor, 2008

Sennertia loricata Klimov & OConnor, 2008: 181, Figs 94-95

Material (show database records). Holotype: HDN – USA: Florida, Alachua Co., Gainesville, ex Xylocopa micans on propodeum, 17 May 1923, no collector, UMMZ, BMOC 04-0804-001. Paratypes: 27 HDNs – same data; 11 HDNs - same data (host sex m), on mesosoma, 6 Apr 1919, P. W. Fatting, CUIC, HK 85-0107-004; 1HDN- same data (over body), 4 May 1924, Alexander & Walker, UMMZ, BMOC 90-1212-007; 21 HDNs - same data (host sex male, on mesosoma), 25 Apr 1922, UMMZ, BMOC 90-1212-008; 13HDNs - Manatee Co., Manatee, ex X. micans (as X. lucida) on anterior scutum (host species probably misidentified), 8 Jul 1977, C. J. Bickner, USNM, BMOC 05-0420-258; 14 HDNs - Monroe Co., L. Matecumbe Key, ex X. micans lateral propodeum, 30 Jan 1935, no collector, OSU OSUC 0121544, BMOC 03-1106-083; 4 HDNs - Orange Co., Orlando, ex X. micans on dorsum, 20 Mar 1935 R. C. Osburn OSU OSUC 0121541, BMOC 03-1106-079; 15 HDNs - Volusia Co., Enterprise, ex X. micans over body, including 7th metasomal tergite, 1 Mar 1923, no collector, OSU OSUC 0121539 BMOC 03-1106-081; 32 HDNs - same data (on propodeum), OSU OSUC 0121542, BMOC 03-1106-082; 13 HDNs - Louisiana, Cameron Pr., Cameron, ex X. micans, 1st metasomal tergite, 1-14 June 1905, Jas. S. Hine, OSU OSUC 0121537, BMOC 03-1106-080; 1HDN - Puerto Rico, Ponce Co., Playa de Ponce (label reads Ponce), ex X. mordax on mesosoma, 25 Mar 1939, T. H. Hubbell #5, UMMZ, HK 90-1212-009; 12 HDNs - Texas, Bexar Co., San Antonio, ex X. micans on mesosoma, 16 Jun 1946, S. Camras, V. Dropkin, FMNH, BMOC 03-0630-034; 7 HDNs - Braggs Co., ex X. micans over body, 17 Aug 1937, R. W. Strandtmann, OSU OSUC 0121546, BMOC 03-1106-077; 21 HDNs - Virginia Suffolk (city), ex X. micans on 7th metasomal tergite, 20 May 1944, G. M. Boush, OSU OSUC 0121545, BMOC 03-1106-078; 20 HDNs - MEXICO: Chiapas, Tuxtla Gutiérrez, ex X. barbatella barbatella on lateral propodeum, 9 Jun 1964, J. C. & D. Pallister, AMNH, BMOC 04-0508-311; 17 HDNs - Jalisco, Playa Teopa, 8 km S Careyes, ex X. muscaria on lateral propodeum, 4 Oct 1985, J. G. Rozen, AMNH, BMOC 04-0508-319. Holotype in UMMZ, paratypes in AMNH, CUIC, FMNH, OSAL, UMMZ, UNAM, USNM.
Description. Phoretic deutonymph. Gnathosomal solenidia shorter than 1/3 of femur I width. Supracoxal setae scx situated on separate small sclerite. Hysterosomal shield lateral gland openings and bases of f2 nearly on edge of hysterosomal shield, or the former outside the shield. Lateral edges of hysterosomal shield in anterior part not narrowing. Dorsal hysterosomal pouch absent. Distance between anterior margin of hysterosomal shield and setae si exceeds diameter of si bases. Striate pattern of idiosomal cuticle outside hysterosomal shield formed by long striae, with sclerotization, sclerotization situated between striae. Distinct rudiments of vi present. Setae si distinctly posterior se. Setae si exceed 1/2 of se, almost as thick as se. Diameter of si exceeds 1/2 of diameter of se. Setae c1 distinctly longer than d1-h1, nearly as long as se, situated on anterior edge of hysterosomal shield. 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, not touching hysterosomal shield. Lateral gland openings situated outside hysterosomal shield. Setae 4b, g, and 4a without distinct rhomb-like widening filiform. Setae 4b, pR I-II, sR III, wF IV, gT I-II, hT I-II, kT III, ra I-II, and wa I-II filiform. Posterior apodemes II and anterior apodemes III free. Anterior apodemes IV not interrupted, almost straight. Posterior apodeme IV absent. Conoids ps2 posterior to anterior transverse level of central suckers (ad1+2), anterior to ps1, situated outside outer level of ad1+2. Transparent margin of anterior suckers (ad3) without rough sclerotization. Suckers ad3 not enlarged, smaller than central suckers. Posterior and lateral borders of attachment organ not forming distinct frame. Sclerotized rudiment of anterior cuticular suckers absent. Longitudinal hysterosomal sclerite present, long. Ventral hysterosoma smooth. Genual setae mG I-II simple, mG II almost as long as leg II or longer. Tarsal setae la I-II longer than famulus ε. Tarsal setae ra I-II not bifid, blade-like. Tarsal setae wa I-II and s III filiform, needle-like, or widened basally but with attenuated end. Tarsal setae d I-II slightly widened. Tarsal setae d and f I-II almost symmetrical, d and f I not touching. Solenidion ω3 closer to f I than to ω1. Posterior condylophore absent. Anterior condylophore I-II with distal bending. Seta d III situated close to tarsal base, distance usually subequal or shorter than diameter of d III alveolus. Leg IV protruding posterior edge of hysterosoma. Tarsus IV not enlarged, shorter or less than 2 times longer than width of trochanter IV. Setae w IV thinner than d IV and distinctly shorter than leg IV, situated on middle of tarsus IV. Setae s IV present. Setae wF IV distinctly protruding apex of tarsus IV.
Other instars unknown.
Hosts. Xylocopa (Schonnherria) micans, Xylocopa (Schonnherria) barbatella barbatella, Xylocopa (Schonnherria) muscaria. One specimen found on Xylocopa (Neoxylocopa) mordax.
Distribution (Show map). USA: Florida, Louisiana, Puerto Rico, Texas, Virginia; Mexico: Chiapas, Jalisco.
Etymology. Loricatus (=clothed in mail, harnessed) is a Latin objective.

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.

Image Gallery
Sennertia loricata, holotype BMOC 04-0804-001 ex Xylocopa micans, Florida, BMOC 04-0804-001
mite (holotype)
Holotype slide
holotype slide
Phoretic deutonymphs of Sennertia loricata dispersing on the bee Xylocopa micans, Florida BMOC 03-1106-082
mites on bee



B. OConnor and P. Klimov ©
Created: May 26, 2011
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