Sacculogalumna Engelbrecht, 1973

Ermilov, Sergey G. & Klimov, Pavel B., 2017, Generic revision of the large-winged mite superfamilY Galumnoidea (Acari, Oribatida) of the world, Zootaxa 4357 (1), pp. 1-72 : 35

Genus Sacculogalumna Engelbrecht, 1973

Type species: Sacculogalumna saccularis Engelbrecht, 1973 , p. 402

Without sexual dimorphism in prodorsum and notogaster, notogaster rounded posteriorly in both genders. Body surface without strongly developed sculpture or ornamentation, exceptionally striate, pteromorphs reticulate. Rostrum rounded or pointed. Lamellar and sublamellar lines present, long, thin, parallel, curving backwards at ventral end, or lines divergent, and lamellar lines straight (directed to rostrum) or directed to lateral parts of prodorsum. Rostral setae close to ends of lamellar lines (if they straight) or medial to lamellar lines and distanced from them. Lamellar setae medial or lateral to lamellar lines. Bothridial setae setiform, clavate, fusiform, lanceolate. Dorsosejugal suture and postanal porose area absent or present. Notogastral setae represented by 10 pairs of alveoli or short, setiform, thin setae, one pair on pteromorphs. Octotaxic system represented by saccules, porose areas absent. Median pore absent or present in females and males, undivided, sometimes females without median pore, males with it. Pteromorphs clearly bilobed. Without thorn-like structures behind pteromorphs, dark band anterior to genital aperture and anal and adanal neotrichy. Adanal lyrifissures located close and lateral to anal aperture, or distanced from anal aperture, oblique in females and preanal in males. Leg tarsi with three claws. Leg setae not modified.

Statement of monophyly: Non-monophyletic—see Note 4.3 in Taxonomic notes section

Distribution: Ethiopian, Neotropical, Oriental and Palaearctic region regions

Known species: four species

7. Hammer (1973) noted that lamellar lines are absent in Disparagalumna tongaensis (type species of this genus); the data on presence/absence of sublamellar lines are not given, however, her Figure 56 shows the absence of lines S. Fujikawa (2008) noted that lamellar lines are absent and sublamellar lines are present in Disparagalumna rostrata , however, Figure 24 in this work shows that the triangular elongate structures N have been mistakenly interpreted as lines S. In addition, Balogh & Balogh (1992) included Disparagalumna in a group characterized by the absence of lamellar and sublamellar lines.

Figures

FIGURES 56–59. Galumnidae, dorsal (56, 57, 59) and lateral (58) view of adults: 56—Notogalumna lagunaensis Ermilov & Corpuz-Raros, 2015(a); 57—Indogalumna undulata Balakrishnan, 1985; 58—Sphaerogalumna index (Balogh, 1960(a)); 59— Leptogalumna(Leptogalumna) ciliata Balogh,1960(a).

FIGURES 24–27. Galumnidae, dorsal view of adults: 24—Flagellozetes (Cosmogalumna) yonaguniensis (Аoki, 2009); 25— Sacculogalumna saccularis Engelbrecht, 1973; 26—Galumna (Atypicogalumna) corpuzrarosae Ermilov, Sandmann, Klarner, Widyastuti & Scheu, 2015(d);27—Trichogalumna (Trichogalumna) nipponica (Аoki, 1966).