Tivia Walker, 1869

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 : 45-46

16. Genus Tivia Walker, 1869

Figs. 22B‒H

Type species. Tivia simulatrix Walker, 1869

Male characters. Femur armament: all femora with an apical spine.—Tibia armament: [1–3.6.1][6–7.6(7).2–3][9– 11.6(7).4–5]. Fronttibia with 1 dorsal spine in T. termes (Karny, 1908) , 2 in T. brevipennis Princis, 1967 , 3 in most other species. Last ventral spine of mid- and/or hindtibia in some species very close to the apical whorl or even at the same level, thus generating whorls with 7 spines.—Left phallomere: On both bases of the L2 arch with a variously long, often hooklike process, at the left the process pda, at the right the transformed L1 sclerite; R1M forms a flat tongue-shaped lobe, Fig. 22B–H .—Supraanal plate: posterior border broadly rounded, sometimes mesally almost straight, but never with an excision.—Cercal tricholiths: absent.

Material studied.

T. simulatrix Walker, 1869 , type species of the genus Tivia . 1♂, Holotype, Lake N’Gami (prep.: Bo 543). (M. London). 1♂, S.W.Africa, Okahandja, 2.III.1956, F.Gaerdes (prep.: Bo 516); 1♂, S.Afr., Cape Prov., Upington , Orange River, 20.XI.50 (prep.: Bo 525). (M. Lund)

T. morosa Shelford, 1908 . 1♂, Syntype, D.S.W. Afr., Rietmond, Gibson, 1903, C.Berger (prep.: Bo 549). (M. Darmstadt). 1♂, S.W.Afr., Tugab, Knomashochland, 26.–27. VI,1952, leg. F.Gaerdes (prep.: Bo 552). (M. Lund).

The comparison of the phallomeres shows that the synonymisation of T. morosa with T. simulatrix by Princis (1957) is not justified.

T. fratercula Rehn, 1922. 1♂, Satara, 27.III.1952, Janse & Vari (prep.: Bo 511) (det. K.Princis, 1958). — T. oscillum Rehn, 1922, according to Princis (1963) a synonym of T. fratercula , Rehn. 1♂, Holotype, Waterval , Ermelo District , Transvaal, 12.XI.1899 (prep.: Bo 544). (M. Pretoria.).

For further species see Bohn & Harten 2006 ( T. appropinquata , T. distans , T. doriana ) and Bohn 2007 ( T. fusca ).

Figures

FIGURE 22. Phallomeres of Tiviella and Tivia species, dorsal view, right phallomere in (B,D) about in normal position, in all others turned 90° or more along the longitudinal axis to the right in order to get a better view on the sclerites. Because of the unsatisfying quality of the reproductions of the type specimens (D,F,H), they were complemented by pictures of non-type specimens of the same species (B,C,E,G). A: Tiviella inconspicua, Bo 612. Note the difference to Tivia species in the structure of L1, with two cushionlike evaginations (arrow); R1M apically with almost cylindrical profile, R2 with a conelike process. B– D: Tivia simulatrix, (B) Bo 516, (C) Bo 525, (D) Holotype, Bo 543; E,F: Tivia morosa, (E) Bo 552, (F) Syntype, Bo 549; G,H: Tivia fratercula. (G) Bo 511; (H) Bo 544, Holotype of T. oscillum, a synonym of T. fratercula.—Explanations:In the species of the genus Tivia both, L1 and pda are differentiated to strongly sclerotised, partly very long hooklike processes; R1M forms a flat lobe. Left phallomere with sclerites L1, L2 arch, L4M, processes pda and hook (= hla, part of the L3 sclerite), right phallomere with sclerites R1M, R2 with a mostly denticulate surface, and R3. The designation of the various parts of the phallomeres is mainly based on the study of embedded material for taxonomic purposes. It has, therefore, to be considered as preliminary and needs confirmation by a thorough three-dimensional analysis.—Enlargements: Scale 0.25 mm.