Heterogamodes Chopard, 1929

Bohn, Horst, 2024, The spine armament of the legs as an important means for the characterisation of the genera of Corydiinae and their relationships (Blattodea, Corydiidae), Zootaxa 5482 (1), pp. 1-79 : 20

1. Genus Heterogamodes Chopard, 1929

Type species. Heterogamia ursina Burmeister, 1838 .

Definition. Among the Palaearctic genera of Corydiinae having no apical spine on the femora of the frontleg well characterised by the subgenital plate with the posterior half densely covered with strong bristles. In the two subgenera Heterogamodes and Heterogamisca the posterior half of the plate is additionally strongly, almost uprightly bent dorsad. The bending is in left half of the plate stronger than at the right and especially well visible in dried specimens. In the subgenus Atuberculoblatta the posterior half of the plate, though similarly covered with strong bristles, does not show such a bending.

( Nymphrytria (Nymphrytria) mirabilis has an in some respects similar subgenital plate, but claws, tibia armament and right phallomere are very different).

Characters. Wings: fully developed or slightly shortened, tegmina without subcosta lobe.—Femur armament: frontfemur without apical spine, mid- and hindfemur with or without apical spine.—Tibia armament: [1.8.0][7.7.1 or 6.8.1. or 6.8.0][n.7.n].—Tarsal arolia: absent.—Subgenital plate: posterior half covered with strong bristles, posterior border with a shallow asymmetrical concavity, styli absent.—Right phallomere: Type 1 or 1/2.—Supraanal plate: very short, posterior border slightly convex or straight ( Fig. 15C ).—Cercal tricholiths:>5 per anulus ( Fig. 19B ).

Subgenera. Heterogamodes , Heterogamisca , and Atuberculoblatta .

Figures

FIGURE 15. A: Male subgenital plate in ventral view, arrow points to fine long bristles inserting on the dorsal surface of the plate; B–F: Male supraanal plate with paraprocts, in dorsal view; G–J: Posterior part of the right phallomere, in standard view.—Species: A,B,G: Anisogamia tamerlana, Bo 1401; C: Heterogamodes ursina, Bo 1357; D: Mononychoblatta semenovi, Bo 1391; E: Heterogamisca cerverae, Bo 1365; F: Mollidentoblatta marmorata, Bo 1382; H: Polyphaga obscura, Bo 1396; I: Polyphagina algerica, Bo 1376; J: Eupolyphaga, spec. 2, Bo 1367.—Phallomere types: G,H: Type 4; I:Type 8; J: Type 7.—Explanations: R1M (in I almost membraneous), R2, R3 sclerites of the right phallomere, MD main dent of R2, not stepped, in (H) with a concavity at the backsite (arrow), in (I) very flat, in (J) with a gutter on the upper surface (arrow); c cercus, p paraproct, s stylus.—Enlargements: Scale 0.25 mm.

FIGURE 19. A–C. Cerci of male with tricholiths, ventral view, all species with more than five sensilla per anulus.—Species: A: Eupolyphaga spec. 2, Bo 1367; B: Heterogamisca bolivari, Syntype, Bo 1356; C: Mononychoblatta semenovi, Bo 1391; D: Heterogamisca cerverae, Bo 1404.—E–H. Right tegmen with specialisation for the fixation of the left tegmen at rest.— Species: E: Eucorydia dasytoides, from Formosa, Kosempo; F: Therea cf. petiveriana, from S-India, Shevaroy Hills; G: Ergaula cf. capenesis; H: Homoeogamia mexicana. The arrows pointto the positions where the borderline between the two different areas crosses the anal furrow; the whitish patches along the borderline in E are especially shiny parts of the specialised surface;af anal furrow; sa specialised area; us unspecialised area.—Enlargements: Scale 2.5 mm.