Ennius monteironis Distant

Zahid, M. & Ahmad, I., 2011, A revision of Myrocheine genus Ennius Stål with special reference to redescription of E. monteironis Distant (Hemiptera: Pentatomidae: Pentatominae) and their phylogenetic relationships, Pakistan Journal of Zoology 43, No. 3, pp. 549-554 : 550-551

Ennius monteironis Distant

( Figs. 1 A-G)

Ennius monteironis Distant 1892: 188 ; Letheiry and Severin, 1893: 110.

Ennius monteironis: Distant, 1898: 296 ; Kirkaldy, 1909: 206; Schouteden, 1913: 194; Linnavuori, 1982: 72, 93.

Ennius frater: Linnavouri, 1975 : 31.

Colouration and general shape

Body ( Fig. 1A) brown with dark brownish punctures, head anteriorly blackish; eyes brownish; ocelli pinkish; membrane of hemelytra brown; body narrowly elongated.

Head

Head as broad as long, anteocular distance slightly longer than remainder of head; paraclypei longer than clypeus and enclosing the latter, lateral margins slightly sinuate, paraclypeal lobe angulate in front of eyes, apex of paraclypei rounded; antennae with basal segment shorter than head apex, third to fifth antennal segments mutilated, length of segments I 0.5, II 1.0, III to V mutilated; labium passing beyond mesocoxae, second and third equal in length, first shortest, length of labial segments I 0.8, II 1.1, III 1.1, IV 0.9; anteocular distance 1.1, remainder of head 0.8; width of head 0.8; interocular distance 1.5; interocellar distance 0.8.

Thorax

Pronotum about 2 x broader than its length, anterior margin slightly broader than head width, anterior angles slightly toothed, lateral margins convex, humeral angles rounded, length of pronotum 2.1, width 4.4; scutellum long with apex subrounded, length of scutellum 4.0, width 2.8; metathoracic scent gland ostiole ( Fig. 1B) slit like with distinct peritreme; distance base scutellum-apex clavus 3.1, apex clavus-apex corium 1.7; apex corium-apex abdomen including membrane 1.6; apex scutellum-apex abdomen including membrane 2.4.

Abdomen

Convex beneath, connexiva slightly exposed at repose, abdomen shorter than membrane of hemelytra; total length 10.4.

Male genitalia

Pygophore ( Fig. 1C) as broad as long, quadrangular, lateral lobe rounded, dorsomedially notched; paramere ( Fig. 1D) F-shaped, outer margin of blade convex, apex of blade rounded; aedeagus ( Figs. 1 E-1G) having theca with finger like lateral thecal appendage, dorsal membranous conjunctival appendage with horn like sclerotized plate at apex, penial lobes with dilated apex.

Material examined

One male, South Africa: “pinatown B.M. 1926” lodged at BMNH. London.

Comparative note

This species is most closely related to E. longulus in having lateral margins of pronotum curvate or strongly so, lateral margins of head strongly converging apicad from base and scutellum shorter 1.33 x projecting posteriad with apex conical but it can easily be separated from the same latter being larger species, lateral margins of pronotum of much prominently curvate and narrowly lamellate and sides of venter strongly coarsely punctate.