Parascela Baly, 1878

Romantsov, Pavel V. & Moseyko, Alexey G., 2019, New and little known species of Eumolpinae (Coleoptera: Chrysomelidae) from Northern Vietnam, Zootaxa 4609 (2), pp. 321-334 : 333

Key to species of the genus Parascela Baly, 1878

1. Body with fine pubescence, rugose but without tubercles...................................................... 2

- Body entirely glabrous or with setae only on pronotum, elytra with strongly developed tubercles...................... 3

2. Body black with blue-green sheen, with shorter setae ( Figs 15–16 ); scutellum somewhat wider; elytra with dense, uniform puncturation and smooth interstices. Body length 3.5–4.7 mm. Vietnam, China, Ryukyu Islands (described from China; further studies could help confirm whether specimens from Vietnam are conspecific or they belong to a different taxon)......................................................................................... P. cribrata Schaufuss, 1871

- Body brown to reddish brown with longer setae ( Fig. 14 ); scutellum somewhat narrower; elytra with sparser puncturation and convex interstices. Body length 3–5 mm. Eastern India (Assam), Southern China (Yunnan).......... P. hirsuta Jacoby, 1908

3. Pronotum without lateral teeth. Body with fine, poorly visible setae on pronotum; red brown with contrasting black pattern: pronotum with large black spots covering half of surface, elytra with black tubercles ( Fig. 13 ). Pronotum rugose with small tubercles; elytra with large and small tubercles not forming ridges, large tubercles clearly stand out from the rest of the surface, very high, conical with sharp apex. Body length 4.5–5.5. Northern Vietnam, Southern China (Yunnan)...................................................................................................... P. filimonovi sp. nov.

- Pronotum with one tooth on each side. Elytra with rugosity and small tubercles but without large standing out tubercles.... 4

4. Body entirely glabrous; black with three basal antennal segments brown and middle part of femora red ( Fig. 17 ). Pronotum narrow, subquadrate. Body length 5.5 mm. Southern China (Yunnan)......................... P. rugipennis ( Tan, 1988)

- Head and pronotum covered with setae; body brownish with lighter tubercles on elytra; legs brown, unicolorous. Pronotum wider, with maximal width near base, trapeziform. Body length 6 mm. Sri Lanka............... P. tuberosa ( Jacoby, 1887)

Figures

FIGURES 13–18. Parascela spp., dorsal view; Colaspoides, abdomen, lateral view. 13, Parascela filimonovi (holotype, male) sp. nov.; 14, P. hirsuta (paratype of P. castanea); 15, P. cribrata (male from Vietnam), 16, P. cribrata (female from Vietnam), 17, P. rugipennis (holotype of P. tuberosa Tan & Wang), 18, C. pseudofemoralis sp. nov. (holotype, male).