Paralleloalathrips, Ulitzka, 2022

Ulitzka, Manfred R., 2022, New genera and species of Rohrthripidae (Thysanoptera: Tubulifera) from Burmese Cretaceous amber, Zootaxa 5162 (1), pp. 1-36 : 9

Paralleloalathrips gen. n.

Type species: Paralleloalathrips bivenatus gen. et sp. n.

Diagnosis. Abdominal segment X tubiform, without a median suture, but with a crown of apical anal setae. Antennae ( Fig. 8 ) nine-segmented. Fore wings ( Fig. 10 ) narrow and straight; fore and hind margin completely parallel between clavus and tip; with two complete longitudinal veins, both furnished with setae; cross-veins not developed. Fringe cilia arising from sockets; duplicated cilia present around margin of wing apex and along distal part of posterior margin. Fore wing clavus with paired setiform processes at tip and hind wing with a basal recurved seta, wing coupling hamulo-frenate. Abdomen without sigmoidal wing retaining setae; abdominal tergite II with a pair of distinct dorsolateral sutures ( Fig. 11 ).

Paralleloalathrips shows typical character states of modern Tubulifera in combination with plesiomorphic features like nine-segmented antennae and fore wings with two complete veins. It therefore is allocated to Rohrthripidae . Furthermore, wing coupling in Paralleloalathrips is hamulo-frenate as it is in Rohrthrips and Gemineurothrips gen. n. The new genus differs from both of the latter based on the narrow shape of the wings ( Fig. 10 ), and from Rohrthrips additionally by the presence of a complete second wing vein bearing setae (cf. Ulitzka 2018, 2019). Paralleloalathrips and Rohrthrips , nevertheless, are possibly more closely related, as both have a pair of sutures dorsolaterally at the second abdominal tergite ( Fig. 11 ). From Adstrictubothrips gen. n. the new genus differs by the presence of two complete wing veins and by the tube, which is not narrowed in the middle ( Fig. 8 ).

Etymology. The name of the new genus derives from the Greek word παράλληλΟς (parállēlos), meaning “parallel”, the Latin word ala, meaning “wing”, and thrips, the usual term for a genus within Thysanoptera . It refers to the parallel wings of the generic type specimen ( Fig. 10 ).

Figures

FIGURES 8–11. Paralleloalathrips bivenatus gen. et sp. n. (8) holotype female, dorsal view, fore wings indicated; (9) paratype female, indicated: fungal spores; (10) holotype female, left fore wing; (11) paratype male, basal abdominal tergites, indicated: dorsolateral grooves on tergum II (met: metanotum, pt: pelta, mpII: medial plate of tergum II, lpII: lateral plate of tergum II, III: tergum III).