Rohrthrips Nel, Peñalver, Azar, Hodebert & Nel, 2010

Ulitzka, Manfred R., 2022, New genera and species of Rohrthripidae (Thysanoptera: Tubulifera) from Burmese Cretaceous amber, Zootaxa 5162 (1), pp. 1-36 : 11

Rohrthrips Nel, Peñalver, Azar, Hodebert & Nel, 2010

Type species: R. libanicus Nel, Peñalver, Azar, Hodebert & Nel, 2010

Diagnosis. Abdominal segment X tubiform, without a median suture, but with a crown of long apical anal setae. Antennae nine-segmented. Maxillary stylets deeply retracted into the head capsule and close together ( Fig. 37 ; Ulitzka 2018, 2019). Fore wings becoming progressively larger in distal half ( Figs 12–13 , 18 ); with a first vein bearing setae and, in some species, additionally with a second much shorter vein without setae ( Fig. 18 ); cross-veins not developed; wing tips broadly rounded. Fringe cilia in most species arising from sockets. Duplicated cilia present around wing apex; running parallel to normal wing fringes. Fore wing clavus with paired setiform processes at tip and hind wing with basal recurved setae, wing coupling hamulo-frenate ( Fig. 27 ). Abdomen without sigmoidal wing retaining setae; abdominal tergite II with a pair of distinct dorsolateral sutures ( Fig. 30 ). The latter feature is rarely found in Tubulifera and has not been documented so far in Rohrthrips (see discussion below); it is also present in Paralleloalathrips bivenatus gen. et sp. n.

Figures

FIGURES 35–38. Line drawings of Rohrthripidae. Head, mouthparts and prothorax (md: mandibula, mx: maxillary stylets) 35–37: (35) Adstrictubothrips mirapterus gen. et sp. n. holotype female; (36) Gemineurothrips peculiaris gen. et sp. n. holotype (spa: posteroangular setae, left broken off and lying close to coxa; scx: coxal setae); (37) Rohrthrips rhamphorhynchus sp. n. holotype. (38) Rohrthrips multihamuli sp. n. holotype; left antenna, segment numbers in Roman numerals, indicated: ventral projections on segments V–VII (cs: campaniform sensillum, uncolored trichomes indicate presumptive sense cones).

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.

FIGURES 16–18. Rohrthrips spp. (16) Rohrthrips pandemicus sp. n. holotype female aptera, dorsal view; (17) Rohrthrips rhamphorhynchus sp. n. holotype, dorsal view, indicated: second vein at base of fore wing; mouth cone outlined white; (18) Rohrthrips setiger sp. n. holotype female, right fore wing, indicated: second wing vein at base.

FIGURES 24–29. Thysanoptera wings. Wing coupling (f: frenulum, h: hamuli, r: retinaculum, smr: submarginal ridge, indicat- ed: microtrichia) 24–27: (24) Taeniothrips inconsequens Uzel (Terebrantia: Thripidae); (25) Elaphrothrips cf. costalimai Hood (Tubulifera: Phlaeothripidae: Idolothripinae); (26) Gemineurothrips microcephalus gen. et sp. n. (Tubulifera: Rohrthripidae); (27) Rohrthrips multihamuli sp. n. (Tubulifera: Rohrthripidae). Tubulifera fore wing duplicated cilia (green to red arrow: area with duplicated cilia) 28–29: (28) Haplothrips setiger Priesner (Phlaeothripidae); (29) Gemineurothrips microcephalus gen. et sp. n. (Rohrthripidae).

FIGURES 30–34. Abdomen of Tubulifera. Tergites (P: pelta, T: tube, II–IX: abdominal segments number) 30–31: (30) Rohrthrips c.f. burmiticus male (MU-Fos-114/1), wings broken off (remains indicated white), indicated black: dorsolateral grooves on tergum II; (31) Gynaikothrips uzeli (Zimmermann) female, indicated: wing retaining sigmoid setae. Distal sternites of males, indicated white: edge of pointed emargination at base of tube 32–34: (32) Alavathrips moralesi reinterpreted from Peñalver et al. (2022, p. 5 Figs 3c), indicated black and dashed redrawn: phallus (designated “ovipositor” in Peñalver et al. 2022); (33) Holothrips schaubergeri (Priesner); (34) Rohrthrips breviceps holotype male (T: tube; IX: hypandrium, sternite IX).