Rohrthrips breviceps Ulitzka, 2019

Ulitzka, Manfred R., 2022, New genera and species of Rohrthripidae (Thysanoptera: Tubulifera) from Burmese Cretaceous amber, Zootaxa 5162 (1), pp. 1-36 : 13

Rohrthrips breviceps Ulitzka, 2019

( Fig. 13 )

Male (MU-Fos-144/1). Body slightly contracted; wings spread, except right hind wing, which overlaps the abdomen; both fore legs and left mid and hind legs bent under head and body, respectively.

Very similar to the holotype in colour and body structure, but somewhat longer and with broader abdomen (see Ulitzka 2019, p. 29). Wings (broken off in the holotype male); with fore wings becoming progressively larger in distal half ( Fig. 13 ). Wing vein shortened, extending only to base of distal wing rounding; not converging with costa; furnished with some setae; second vein not developed. Wing membrane without microtrichia. Fringe cilia straight; some arising from sockets, particularly at the distal margin of the fore wing. Duplicated cilia present around apical margin of wing; running parallel to normal wing fringes. Hind wing without any veins. Wing coupling system hamulo-frenate; number of hamuli not assessable.

Measurements. Male MU-Fos-144/1 (in microns): Body, length about 1377 (slightly contracted). Head, length 137; largest width 206. Eyes, length 63; width 44. Ocellar setae 44; postocular setae 56. Pronotum, length 159; width 391; anteroangular setae 30, mediolateral setae about 65 (not clearly visible), posteroangular setae about 96, epimeral setae 125. Pterothorax, largest width 353. Abdomen, length 813; largest width 431 (segment V); segment X (tube), length 196; basal width 83. Setae on tergite IX, s1 147, s2 broken off, s3 270. Antennae, length 440. Fore wings, length 921; largest width 206; length of vein 735.

Material studied. Male MU-Fos-144/1 ( Fig. 13 ); inclusion in Burmese amber from Hukawng Valley, Kachin State, Myanmar; donated to the author by Patrick Müller; deposited in the author’s collection.

Syninclusions. A beetle ( Coleoptera : Limnichidae ), remnants of another insect, a branched plant trichome, some bubbles of air and brownish streaks of unknown origin.

Figures

FIGURES 12–15. Rohrthrips spp. (12) Rohrthrips brachyvenis sp. n. holotype female, dorsal view; (13) Rohrthrips breviceps male, dorsal view (Note: the median shading makes the tube appear narrow, but the lighter edges are part of the tube, which actually is broad at base); (14) Rohrthrips jiewenae male, dorsal view; (15) Rohrthrips multihamuli sp. n. holotype female, head and pronotum, antennal segments III–IV indicated with roman numerals.