DINIDORIDAE, Stål, 1867

Lis, Jerzy A., 1991, On The Last Instar Larvae Of Some Dinidoridae Species (Heteroptera, Pentatomoidea), Annals Of The Upper Silesian Museum (Entomology) 2, pp. 83-92 : 2-3

KEY TO KNOWN LAST INSTAR LARVAE OF DINIDORIDAE

SPECIES

1. Head shorter than 1/2 length of pronotum (subfamily Dinidorinae ). 2.

—. Head longer than 1/2 length of pronotum (subfamily Megymeninae) ............................................................................................... 8.

2. Median patches on tergit VII larger than those on tergit VIII (figs 1—2) (genus Cyclopelta Amyot et Serville )......................... 3.

—. Median patches on tergit VII smaller than those on tergit VIII (sometimes even hardly visible — figs 3—7) (genus Coridius liliger) .............................................................................................. 4-

3. Pronotum, scutellum and wing pads brown or blackish brown, dorsum yellowish brown... Cyclopelta bechynei Durai

—. Pronotum, scutellum and wing pads black, dorsum deep brown ............................................................ Cyclopelta tristis (Stal)

4. Connexival areas plain and lighter than the rest of dorsum (figs 4 and 7)..............................................................................................5.

—. Connexival areas plain and darker or same coloured as rest of dorsum, or connexival areas two coloured (figs 3, 5, 6)... 6.

5. Pronotum and scutellum reddish orange with black bilobed pattern near anterior margin (fig. 4)... Coridius ianus (Fabricius)

—. Pronotum and scutellum plain, brown ( fig. 7 ).................................. ............................................................ Coridius xanthopterus (Faimaire)

6. Connexival areas with two blackish brown patches on each segment (fig. 5) ...................................................... Coridiuschinensis (Dallas)

—. Connexival areas with one black patch on each segment (figs 3 and 6)........................................................................................

7. Pronotum, scutellum and wing pads red or reddish brown, 3rd and 4thantennalsegments entirely yellowish orange ................... Coridius nubilus (Westwood)

—. Pronotum, scutellum and wing pads brown or blackish brown, only 4th antennal segment yellowish orange or yellow .... .............................................................................. Coridius putoni (Bolivar)

8. Pronotum black with lateral margins and median line ochraceous ( fig. 9 )...................................................... SagrivavittataSpinola

—. Pronotum brown with no pattern as above ( fig. 8 ) (genus Megymenum Guerin ..................................................................................... 9.

9. Anterior and posterior parts of projected connexival areas blackish brown; pronotum and scutellum with blackish brown patches. ............................................... Megymenum spinosum (Burmeister)

—. Only posterior part of projected connexival areas blackish brown; pronotum and scutellum with no blackish brown patches. .............................................. Megymenum gracilicome Dallas

Figures

Figs 7—8. Last instar larvae of: 7 — Condius xanthopterus, 8 — Megymenum spinosum.

Fig. 9.Last instar larva of Sagriva vittata.