Sugaentulus andrzeji

Shrubovych, Julia & Rusek, Josef, 2010, Sugaentulus andrzeji sp. nov. from Siberia, Russia (Protura: Acerentomidae: Acerentominae) and key to Acerentominae genera, Zootaxa 2720, pp. 59-68 : 67

Differentiation of S. andrzeji and S. masumii

Sugaentulus andrzeji and S. masumii both possess 2+2 A -setae on meso- and metanotum, the abdominal legs bear two nearly equal setae, and the labial palps possess an apical tuft of setae. They also have in common a well developed striate band, anterior seta P3 on tergites II–VI, and the foretarsus with a claviform t1 but lacking sensillum b’. The new species differs from Sugaentulus masumii in having a slender maxillary calyx without appendices (in S. masumii calyx broader with extra appendix), in leaf-like sensilla on maxillary palps (slender and nearly setiform in S. masumii ), in finger-like sensillum on labial palps (broad and leaf-like in former species), setiform foretarsal seta δ 4 (sensilliform and short in former species), and setiform shape of foretarsal sensilla d and f (in S. masumii they are parallel to the rounded tip).