Marisia - Maros Megyei Múzeum Évkönyve 36/1. (2016)

Zoology

Zaharia NECULISEANU

Pt. caudicalis (continued) 1. L2 of this species is slender; head and thorax more chitinized than abdomen, their color are light brown; abdomen color is white. The length of second instar L2 on 9-10 ds. is 10.5-10.7 mm; width of head capsule 0.8-0.9 mm 2.The L3 usually have more heavily chitinized head and thorax than abdomen; head with a fully developed dark brown colouring, but thorax color varies from light brown to dark brown; abdomen also varies in color from a milky white to creamy yellow. This instar L3 with hight voracity, has the length before pupation of 16.4-16.6 mm; width of head capsule 1.5-1.6 mm. The duration of the larval stage ranged from 23 to 27 ds. The larvae are predators. On the 10-12 ds before pupation the larvae L3 constructed especially pupal chamber. The length of pupa is 6.3—6.5 mm. width 2.0—2.2 mm . The pupal stage lasted 6—7 ds. 3. The species Pterostichus corvinus (11—15 mm) has the following characteristic signs: color of adult is black, shiny, appendages slightly paler,

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