Dinmopsylla, Lambkin, 2018

Lambkin, Kevin J., 2018, A new genus and species of the family Archipsyllidae (Insecta: Paraneoptera: Permopsocida) from the Late Triassic of Queensland, Zootaxa 4382 (1), pp. 192-194 : 193

Dinmopsylla gen. nov.

Type species. Dinmopsylla semota sp. nov.

Diagnosis. Forewing: Basal piece of Sc quite long, reaching costal margin at level of primary fork of R, Sc then fused with costal margin for a short distance before obliquely diverging to fuse with R1 until the pterostigmal area where it forms that area’s short antero-basal margin; pterostigmal area appearing hyaline, apparently not sclerotised, c. 4 times longer than wide, extending beyond level of Rs fork, posterior margin evenly curved; inter-radial space about as wide basally as apically; ir upright; r-m between Rs and M1+2; basal crossvein (m-cua in Fig.1 ) between M and CuA; M3+4 long,> ½ the length of M1+2; CuA fork acute, c. 35˚; CuA1 more or less in line with stem of CuA, inclined towards margin (the base only is preserved); CuA2 long, distinctly inclined; 1A closer to CuP than to 2A; 2A distinctly curved away from 1A apically.

Notes. The generic name is a combination of Dinmore (with the letters ‘re’ omitted for the sake of euphony) and the standard generic root ‘psylla’. While I was loath to create yet another generic name within the Archipsyllidae , this Triassic forewing does not fit into any of the existing genera. Sc is in two pieces only in Mydiognathus ; the basal piece of Sc is much shorter in Archipsylla, Archipsyllodes , Archipsyllopsis , Burmopsylla and Psocorrhyncha , terminating at or before the level of the separation of M from R; the pterostigma is much shorter, less than 3 times longer than wide, in Archipsylla, Archipsyllodes , Burmopsylla , Mydiognathus and Psocorrhyncha , and its posterior margin is distinctly angulate in Archipsyllodes , Burmopsylla and Mydiognathus ; the inter-radial space is much wider apically than basally in all other genera; ir is distinctly inclined in Archipsylla, Archipsyllodes , Archipsyllopsis and Psocopsylla ; r-m runs to the stem of M rather than M1+ 2 in Psocopsylla ; the basal crossvein is between M+R and CuA in Mydiognathus and Psocorrhyncha , rather than between M and CuA; M3+4 is shorter, no more than half the length of M1+ 2 in all other genera except possibly Archipsyllopsis ; the CuA fork is more obtuse, c.70˚, in all other genera except Mydiognathus and Psocorrhyncha in which it is approaching 90˚; CuA1 is angled upwards in all other genera (for Burmopsylla see figs 1 and 2 in Liang et al. 2016, rather than fig.3); CuA2 is shorter and nearly upright in all other genera; CuP, 1A and 2A are more or less equally spaced in Archipsyllopsis and Psocopsylla ; and 2A is at most only slightly curved, and more or less parallel to 1A in all other genera except Burmopsylla . The above analysis is based on the descriptions and figures in Vishniakova (1976), Huang et al. (2008), Liang et al. (2016), Yoshizawa & Lienhard (2016) and Huang et al. (2016).

Figures

FIGURE 1. Dinmopsylla semotagen. etsp.nov., holotype QMF 58948.