Cercyon analis (Paykull, 1798)

Rodriguez, Georgina & Archangelsky, Miguel, 2023, Larval chaetotaxy and morphometry of Megasternini: Cercyon (Paracercyon) Seidlitz, Cryptopleurum Mulsant and Pelosoma Mulsant (Coleoptera: Hydrophilidae), Zootaxa 5318 (1), pp. 45-66 : 52

Cercyon analis second instar larvae

Morphometry. Measurements and ratios in Table 1 .

Chaetotaxy. Head capsule. Frontale without secondary sensilla; gFR1 with eight setae. Each parietale with five secondary sensilla: one short seta near seta PA8, one short seta between seta PA7 and setal group PA12–14, one short seta behind seta PA9, one pore next to pore PA19 and one short seta close to seta PA11; setae PA16, PA18, PA21 and PA26 proportionally longer. Antenna. Without secondary sensilla, sensory appendage (SE1) proportionally shorter.

Mandibles. Each mandible with three secondary setae, two short setae on basal outer face, behind MN1, third one minute, near pore MN4. Maxilla. Stipes without secondary setae; MP2 with setae MP14 and MX 16 stouter than in first instar larvae. Labium. Without secondary sensilla.