Grammedessa longispina Da Silva & Fernandes, 2022

Silva, Paulo Augusto Lima Da & Fernandes, José Antônio Marin, 2022, Description of six new species to Grammedessa Correia & Fernandes, 2016 (Heteroptera: Pentatomidae: Edessinae), Zootaxa 5129 (2), pp. 211-226 : 218-219

Grammedessa longispina Da Silva & Fernandes sp.n.

( Figs. 1E–F ; 4A )

Diagnosis. Length 15.5 mm. Width 9.6 mm. Specimen yellowish-brown colored, remnant spots on pronotum indicates a green color when alive or well-preserved dead specimens. Pronotal disc with punctures light brown, except posterior margin that shows black punctures on small dark spots, only part forming irregular lines ( Fig. 1E ). Beneath thorax irregularly punctured with punctures shallow, brown to black on dark spots, some forming sinuous lines ( Fig. 1F ). Abdomen shagreen with sparse, shallow, brown punctures on dark spots among brown spots, these dark marks more concentrated on lateral sides of the abdomen ( Fig. 1F ). Humeral angles projection short, dentiform. Anterior half of the costal margin of corium and hypocostal ridge with punctures on black spots ( Fig. 1E ). Antennae with dark spots on the first three and base of the fourth segment. Legs with dense dark spots ( Fig. 1F ). Female valvifers 8 strongly projected posteriorly, posterior margins forming sharp spines ( Fig. 4A ).

Description. Head wider than long (1.3 times). Antennae with the fifth segment missing. Thorax: Pronotum wider than long (2.5 times); cicatrices delimited by grooves, not punctuated. Evaporatorium dull, translucid, densely spotted; lateral areas spotted, and half-moon shaped. Metasternal process yellow; anterior bifurcation with arms acuminate; distally with few dark spots ( Fig. 1F ). Abdomen: connexivum densely and irregularly punctuated; segments III–VI medially with a callus; segment VII with margin and spots dull black. Beneath one trichobothrium in line and the other lateral to spiracles.

Female ( Fig. 4A ). Valvifers 8 longer than wide (2 times), sutural border not contiguous; far exceeding valvifers 9, reaching the median line of laterotergites 9. Valvulae 8 medially slightly elevated and somewhat sclerotized, visible between sutural borders of valvifers 8. Valvifers 9 slightly convex, longer than wide (1.3 times), lateral sides partially hidden by valvifers 8. Laterotergites 8 spotted, longer than wide (1.3 times), distal spine well developed slightly exceeding abdominal segment VII. Laterotergites 9 narrow and long, clearly exceeding the band uniting the laterotergites 8, but shorter than laterotergites 8 and level with abdominal segment VII.

Etymology. Named for the long spine of the valvifers 8. From the Latin. Longus (long) and Spinus (spine).

Comments. Remnant spots on pronotum indicate that probably pronotal disk has green punctures on green spots that are slightly darker than background like in G. brunneotarsata and G. fundicava sp.n.; among all species of Grammedessa only G. longispina sp.n., G. fundicava sp.n., G. graciligramma sp.n., and G. stichtocephala sp.n. share a posterior stripe of black punctures on the pronotum. But only the first three show black spots on legs. G. longispina sp.n. is separated from the other two species by the ventral side of the body with dark punctures and spots.

Examined material ( n=1). Holotype: BRAZIL: Pará. [Canta Galo (Óbidos), Dirings Coll] (1 Female-MZUSP).

Distribution. BRAZIL: Pará.

Figures

FIGURE 1. Grammedessa. A–B: G. hamata comb.n. A: Dorsal view. B: Ventral view. C–D: G. nigricava sp.n. C: Dorsal view. D: Ventral view. E–F: G. longispina sp.n. E: Dorsal view. F: Ventral view. G–H: G. fundicava sp.n. G: Dorsal view. H: Ventral view. I–J: G. graciligramma sp.n. I: Dorsal view. J: Ventral view. K–L: G. stichtocephala sp.n. K: Dorsal view. L: Ventral view. M–N: G. acalyptoprocta sp.n. M: Dorsal view. N: Ventral view. Scale = 10 mm.

FIGURE 4. Female genital plates in Ventral view. A: G. longispina sp.n. B: G. brunneotarsata. Scale = 1 mm.