Cassida vittata, Villers, 1789

Świętojańska, Jolanta & Belczyk, Ewa, 2021, A comparative study of the immature stages of closely related species Cassida pfefferi Sekerka, 2006, Cassida nobilis Linnaeus, 1758 and Cassida vittata Villers 1789 (Coleoptera: Chrysomelidae: Cassidinae: Cassidini), Zootaxa 4942 (4), pp. 451-500 : 490

Pupa of Cassida vittata

( Figs 15 , 194 – 197 )

Measurements (n=2) are presented in Table 5 .

Body oval. Living specimens mostly green with white and dark green elements like in Fig. 15 . Pronotum green with light green cross in the middle, and two dark brown spots—the horizontal arm of the cross goes through the spots; each elytral portion dark green; two white spots on metanotum; and four dark green spots on each abdominal tergite. Spiracles white. Head, antennae, mouth parts and legs dark green. Pupae preserved in alcohol yellow with a brown spots, instead dark green of living specimens, distributed like in Figs 194–197 .

Anterior margin of pronotum regularly rounded. Lateral margins of pronotum in front of basal angles shallowly emarginate. Pronotum with regularly distributed marginal processes. Six of these processes are distinctly stouter than remainder, four of them are also the longest and covered with few fine lateral processes ( Figs 194–197 ). Each marginal process of pronotum armed with short sensillum but four the longest processes have sensilla in form of pointed setae distinctly longer than blunt sensilla of remainder.

Pro-, meso-and metanotum without lateral scoli. Margin of pronotum with mostly short projections distributed regularly along margin except for two projections on each anterior side which are distinctly stouter and longer (approximately three times) than remainder, moreover projections placed on posterior angles are two times longer and placed closer to each other than remainder.

Abdominal segments I–V with leaf-like lateral scoli which are gradually shortened posterad, these scoli are distinctly visible in dorsal as well as ventral view. Scoli of segments VI – VIII short, in form of simple processes. Segment IX with two short processes at posterior border.

Abdomen with 7 pairs of spiracles; spiracles of first pair the most elevated and with the greatest diameter; diameter and elevation of all spiracles slightly decrease posteriorly, 7 th pair hardly visible.

Exuvium of last instar larva remains attached to last abdominal segments (VI – IX) of pupa ( Figs 194, 195 ).

Figures

FIGURES 14–17. Living immature stages. 14. Mature larva of Cassida pfefferi Sekerka, 2006; 15. pupa of Cassida vittata Villers, 1789; 16. pupa of Cassida pfefferi, dorsal aspect; 17. pupa of Cassida pfefferi, ventral aspect.

FIGURES 194–197. Cassida vittata Villers, 1789, pupa. 194, 196. Dorsal aspect; 195, 197. ventral aspect; 194, 195. pupa with last larval skin.

Tables

TABLE 5. Measurements of Cassida vittata Villers, 1789 pupae (in millimetres).

Cassida vittata	body length	width of body	length of pronotum	width of pronotum
		across
pupa		II abdominal
		segment
1.	5.60	2.70	1.50	3.20
2.	5.50	3.00	1.60	3.20