Allox, Andrew Hamilton, K. G., 2014

Andrew Hamilton, K. G., 2014, The old-world Zygonini tr. nov. (Hemiptera, Cercopoidea, Clastopteridae), with new taxa from the related Machaerotinae, Zootaxa 3768 (4), pp. 437-459 : 442-443

Allox gen. nov.

Type-species: Allox transfigurata sp. nov., the only included species.

Etymology. arbitrary combination of letters (f noun).

Diagnosis. Distinctly dorsoventrally compressed, with face horizontal, as in Platycotta Maa (Hindolini), but head and thorax more strongly flattened, coronal margin forming a sharp rim semicircularly notched by small antennal pit; antenna with postpedicel withdrawn into tip of pedicel, with marginal arista excavated at base by large pit containing mitten-shaped basiconic sensillum, with pit surrounded by an arcuate row of five prominently margined coeloconic sensilla ( Fig. 23 C); pronotum finely and densely striate, striae diverging from fore border towards humeral angles and hind border ( Fig. 12 A); tegmina irregularly pustulate, pitted throughout; veins weakly raised, inconspicuous; apical cells in nearly transverse row with veins turned perpendicular to circumambient vein ( Fig. 45 A). Hind wing broadly rounded at tip, Cu fork large ( Fig. 45 B). Hind tibia twice as long as fore tibia, 3 × as long as wide across apex, its pecten with 5 black-tipped spines; basitarsomere half as long as tibia, with 6 dark spines, and second tarsomere with 5 such spines. Male pygofer with long process from dorsal margin, minutely serrate on upper and lower edges, below this a low, setose prominence ( Fig. 12 B); styles in dorsal aspect strongly constricted at apical third, bearing long setae. Ovipositor 2nd valvulae 1.1 mm long, foliaceous, 4 × as long as wide at midlength, tip parabolically pointed ( Fig. 17C ).

Remarks. The head is so strongly flattened that the basal segment of the antenna is clearly visible, although dorsally the antennal pit wraps tightly around the antenna as in other Clastopteridae . This genus is similar to Hindola Kirkaldy in having a basitarsomere half as long as the tibia but the antennal pit notches the coronal margin, the coeloconic sensilla form a curvilinear series around the basiconic sensillum instead of being scattered, and the styles are plesiomorphic for the tribe instead of having a very short, twisted tip as in Hindola ( Maa 1963, fig. 14).

Figures

FIGURES 18 – 32. Antennae of Clastopteridae: Clastopterinae (18 – 20) and Machaerotinae: Hindolini (21 – 23), Machaerotini (24 – 25) and Zygonini (26 – 32, boxed set). A, lateral aspect of head; B, detail of antennal and antenna ledge; C, tip of antenna, showing postpedicel; D, detail of postpedicel showing detail of pits, revealing 4 enclosed coeloconic sensilla in communal pits. 18, Clastoptera; 19, Sepullia; 20, Grellaphia; 21, Chaetophyes; 22, Hindola; 23, Allox; 24, Blastocaena; 25, Irridiculum; 26, Pseudomachaerota cucullata; 27, Zygon, with detail showing basiconic sensilla (b) and coeloconic sensilla (c) of various types (shown in greater detail in Fig. 38); 28, Ambonga lanceolata (Zygonini); 29, Ambonga apicenotata syntype with insert showing sensilla at base of arista; 30, Pseudoclastoptera irrubesco sp. nov., holotype; 31 – 32, Pseudoclastoptera invidia sp. nov., male holotype (32) and unassociated female (31).

FIGURES 10 – 16. Examples of Clastopterinae (10 – 11) and Machaerotinae (12 – 16). 10, Clastoptera testacea Fitch; 11, Iba cuneata Schmidt, lectotype; 12, Allox transfigurata; 13, Metaenderleinia nervosa Lallemand; 14, Machaeropsis dramatica (genital capsule as in Metaenderleinia); 15, Irridiculum; 16, Hindoloides bipunctata (Haupt), male genitalia typical of Machaerotini and Hindoloidini. A, habitus; B, male genital capsule (small styles as in 16 B omitted in 12 – 13 B). Scale line for habitus drawings: 1 mm (Fig. 11 A slightly larger).

FIGURES 40 – 46. Wings of Clastopteridae: Clastopterinae (40 – 41), Zygonini (42) and Machaerotinae (43 – 46), tegmina (A) and hind wings (B). 40, Clastoptera globosa; 41, Iba sp. nov.; 42, Pseudomachaerota olivacea, holotype; 43, Irridiculum deformatum, holotype; 44, Conditor collatatus, holotype (redrawn from Distant 1916, fig. 141, as the unique specimen is no longer in the BMNH); 45, Allox transfigurata, paratype; 46, Aphrosiphon bauhiniae, from China (1935).

FIGURES 17 A – R. Ovipositor shapes in 17 genera and subgenera of Clastopteridae: Zygonini (A, G – J, Q), Machaerotinae (B – D, K, R) and Clastopterinae (E, F, L – Q). A, Zygon desegregatum, paratype; B, Irridiculum deformatum, holotype; C, Allox transfigurata, paratype; D, Taiorhina geisha Schumacher; E, Grellaphia costalis Schmidt; F, Beesoniella sylvestris Lallemand; G, Pseudomachaerota olivacea, holotype; H, Ambonga lanceolata; J, Hemizygon saturnus (as in Ambonga apicenotata); K. Machaeropsis dramatica; L, Tremapterus (Nyanja) bimaculata Synave, holotype; M, Tremapterus (Abbalomba) typica Distant; N, Tremapterus (Patriziana) janus Linnavuori; O, Tremapterus (s. s.) rufus (Thunberg); P, Sepullia fuscolimbata Lallemand; Q, Pseudoclastoptera irrubesco; R, Machaerota sp. Scale line: 1 mm.