Haemolaelaps Berlese

Shaw, Matthew D., 2014, Haemolaelaps Berlese removed from synonomy with Androlaelaps Berlese (Acari: Laelapidae), Zootaxa 3841 (2), pp. 285-292 : 287-289

Genus Haemolaelaps Berlese

( Figs 1–9 )

Laelaps (Haemolaelaps) Berlese, 1910: 261 .

Laelaps (Haemolaelaps) . — Berlese 1911: 432; 1922: 94. Hypoaspis (Haemolaelaps) .— Berlese, 1916: 170; 1918: 123.

Type species Laelaps (Haemolaelaps) marsupialis Berlese 1910: 261 ; by monotypy and original designation.

Diagnosis. Female. Dorsum. Medium-sized to large mesostigmatan mites, length 610–920. Opisthonotum without unpaired accessory Jx setae. Paired accessory setae sometimes present within dorsal hexagon of podonotum ( H. cleptusa ). Seta J2 situated posterolateral to J1. Dorsal setae barbed except in H. quartus . Seta Z5 very long (260–330) in H. cleptusa .

Gnathosoma . Pilus dentilis flagelliform, not inflated ( Fig. 3 ), 25–40 long (approximately as long as movable digit), except somewhat shorter in H. hattenae (ca. 14). Pilus dentilis inserted at or close to apex of digit. Corniculi converge strongly inwards ( Fig. 6 ), weakly in H. cleptusa . Deutosternal groove with five ( H. domrowi , H. marsupialis ) or six transverse rows of denticles. Epistome a rounded lobe, with few to many denticles ( Fig. 5 ).

Venter. ( Fig. 4 ) Lateral edges of tritosternal base barbed ( Fig. 7 ). Tritosternal lacinae free almost to suture ( Fig. 7 ). Presternal striae with fringes except in H. quartus and H, hattenae . Sternal shield often with elongate setae. Median pore-like structure on post-stigmatal plate enlarged (> 4µm, Fig. 8 ), obviously much larger than anterior and posterior pore-like structures. Primary metapodal platelet narrow oval, not subcircular. Setae on unsclerotised opisthogaster barbed. Genito-ventral shield with 6–8 transverse striae ( Fig. 9 ), or only five on the abbreviated shield of H. quartus . Genito-ventral shield bears st5, also sometimes Zv1, and more rarely Jv 1 in some individuals of H. cleptusa and H. hattenae . Genito-ventral shield falls short of anal shield. Post-anal seta frequently long and/or barbed.

Legs. Leg setation holotrichous as defined by Evans (1963). Genu IV with a single proximally positioned pl seta (pl2). Some leg setae always barbed: trochanter I d; femur I ad1, pd1, pd2; femur II ad1, pd1, pd2; femur III ad1; femur IV ad1, ad2. The femur, genu and tibia of leg II bear thickened ventral setae in H. domrowi .

Male. Males are known for H. cleptusa , H. domrowi , H. marsupialis and H. flagellatus . Fixed digit of male distinctly reduced in known males, though only slightly so in H. marsupialis . Flagelliform pilus dentilis inserted at apex of fixed digit. Spermadactyl bent abruptly upwards. Spermadactyl tip flared in H. cleptusa . Holoventral shield bearing st1–5, circum-anal setae and five other pairs of setae.

Figures

FIGURES 1 – 2. 1. Haemolaelaps marsupialis, male chelicera, from Isoodon macrourus, Pullenvale QLD, host 128; 2, Haemolaelaps domrowi, male chelicera, from Isoodon macrourus, Killarney, host 111, scale = 50 µm.

FIGURES 3 – 10. Haemolaelaps marsupialis ex Isoodon macrourus. 3. chelicerae, note elongate pilus dentilis, from Isoodon macrourus, Brookfield QLD, host 134, scale = 10 µm; 4. ventral habitus, host 111, scale = 100 µm; 5. epistome, host 111, scale = 10 µm; 6. corniculi, note tips curved inwards, host 111, Scale = 10 µm; 7. tritosternal base, note suture (s) and lateral barbs (b), host 111, scale = 10 µm; 8. post-stigmatal plate, note enlarged median pore-like structure (m), host 111, scale = 10 µm; 9. genito-ventral shield, note seven serially regular transverse striae, host 111, scale = 100 µm.