Rohrthripidae Ulitzka 2018
Creators: name: Ulitzka, Manfred R.
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Thysanoptera
Rohrthripidae

description: Key to genera and species of Rohrthripidae
R. pandemicus excluded.
1. Fore wings narrow, distally never wider than at base (cf. Figs 2, 10, 22).......................................... 2
-. Fore wings becoming progressively larger in distal half, broadly rounded at tip (cf. Figs 7, 12, 18)..................... 5
2. Fore wings parallel and straight, with two complete veins, both with setae; fore wing fringe cilia arising from sockets (Fig. 10).......................................................................... Paralleloalathrips bivenatus
-. Fore wings slightly bent forwards, broadened towards base; either with only one vein or additionally with a second vein ending approximately in the middle of the wing; fore wing fringe cilia embedded into the wing membrane (Figs 2, 22).......... 3
3. Fore wings with first vein only, which does not bear any distal setae; tube constricted (Figs 1, 2).................................................................................................... Adstrictubothrips mirapterus
-. Fore wings with a shorter second vein, which ends with a prominent seta approximately in the middle of the wing (Fig. 22); distal setae on first vein present; hind wings with posterior distal margin of wing membrane serrate (Fig. 23) (Sesquithrips). ................................................................................................... 4
4. Mouth cone short and rounded (Figs 19, 20); antennal segment IX clearly separated from VIII; robust species................................................................................................ S. markpankowskii
-. Mouth cone long and pointed (Fig. 21); antennal segment IX broadly joined to VIII; gracile species.......... S. rostratus
5. Fore wings with two complete veins, both furnished with setae (Fig. 7); pronotum (Fig. 36) with two pairs of posteroangular setae (inner pair much shorter) and well-developed posteromarginal setae; fore coxae each with a long hair-like seta (Gemineurothrips)............................................................................................ 6
-. Fore wings with one long wing vein only (Figs 12, 13); second vein, if developed, reduced to basal half of wing, without any setae (Figs 17, 18); pronotum with one pair of posteroangular setae, posteromarginal setae vestigial (Fig. 37); fore coxae without long setae (Rohrthrips)............................................................................. 7
6. Antennal segment I about twice longer than wide; median antennal segments at least 1.4 times longer than wide (Fig. 4), with a slender pedicel; inner ocellar setae protruding beyond base of antennal segment III; head narrow...... G. microcephalus
-. Antennal segment I scarcely longer than wide; median antennal segments about as long as wide (Fig. 6), without a distinct pedicel; inner ocellar setae protruding beyond base of antennal segment II; head broad.................... G. peculiaris
7. Fore wings with a distinct second vein near base (Figs 17,18).................................................. 8
-. Fore wings without a second vein (Figs. 12, 13) but sometimes with an elongated shading near base (Fig. 14) or with some scattered stains...................................................................................... 10
8. From Lebanese amber; tube no more than 2.8 times longer than basal width............................. R. libanicus
-. From Burmese amber; tube slenderer, more than 3.3 times longer than wide (Fig. 18)............................... 9
9. Mouth cone long, slender and pointed, protruding over base of prosternum (Fig. 17); first wing vein with about 4 very small setae and with one distal seta as long as the distance between the vein and the anterior margin of the wing; small species (body length about 1.5mm).................................................................. R. rhamphorhynchus
-. Mouth cone shorter, not reaching base of prosternum; first wing vein with about 13 dispersed stout setae, several as long as the distance between the vein and the anterior margin of the wing (Fig. 18); large species (body length about 1.9mm). R. setiger
10. Tube short and bulky, about 2.3–2.5 times longer than wide (cf. Fig. 16)........................................ 11
-. Tube long and slender, about 3.2–5.9 times longer than wide (Fig. 12).......................................... 13
11. Head very short, about 1.4–1.5 times wider than long; antennal length about 0.3 the body length; wing vein hardly extended to base of rounding of wing tip; about 0.8 times as long as fore wing; small species (body length about 1.3 mm) (Fig. 13)............................................................................................... R. breviceps
-. Head longer; first vein extended to base of rounding of wing tip; larger species (body length over 2.1 mm)............. 12
12. Head about as long as wide; wing vein pale along entire length; smaller species (body length about 1.6 mm).................................................................................................. R. patrickmuelleri
-. Head about 1.25 times wider than long; wing vein distally dark; large species (body length about 2.1 mm)....... R. maryae
13. First vein long, reaching costa at base of rounding of wing tip (Fig. 14); length of antennal segment III about 50–70 microns; smaller species (body length about 1.5–1.6mm)............................................................ 14
-. First vein short, distally not reaching last fifth of fore wing (Fig. 12); antennal segment III long (87–133 microns); large species (body length over 2.0mm)............................................................................. 15
14. Sense cones on antennal segments short (not longer than 10 microns).................................. R. jiewenae
-. Sense cones on antennal segments longer (longer than 15 microns)................................... R. burmiticus
15. Antennal segment III and IV distally cylindrical-elongated (Figs 15, 38); sense cones tiny, hardly distinguishable from setae; ocelli on a distinct ocellar hump; hamulate part of wing coupling system with six or seven hamuli (Fig. 27); very large species (body length about 2.8 mm)................................................................. R. multihamuli
-. Antennal segment III and IV distally inverse conical (cf. Fig. 4); sense cones stout, easy to distinguish from setae; ocellar hump lacking; wing coupling with less hamuli; large species (body length about 2.0 mm)................................ 16
16. Wing vein short, hardly reaching last quarter of fore wing, apically split, with two terminal setae; tube very long and slender (about 5.1 times as long as wide at base) antennal segment III conspicuously long (about 100 microns).... R. schizovenatus
-. Wing vein longer, reaching almost last fifth of fore wing; not diverged into two branches; tube shorter (about 3.2 times as long as wide at base); antennal segment III shorter (less than 87 microns)................................. R. brachyvenis
description: Published as part of Ulitzka, Manfred R., 2022, New genera and species of Rohrthripidae (Thysanoptera: Tubulifera) from Burmese Cretaceous amber, pp. 1-36 in Zootaxa 5162 (1) on page 25, DOI: 10.11646/zootaxa.5162.1.1, http://zenodo.org/record/6796605