Figure 6 in Description of a new species of Rhombognathus (Halacaridae, Acari), its spermiogenesis and spermatozoa

Figure 6. (A) Lumen of testis. Mature sperm cells are surrounded by somatic tissue and are delivered in testis lumen [Lu]. Then spermatozoa are coated with secreted material produced in the glandular portion: note microvilli and dense apico-lateral cell borders indicative of zonulae adhaerens among cells; (B) detail of a cell from the secretory portion of testis. N, nucleus. Scale bars: 1 mm.