The genus Scirtothrips Shull (Insecta, Thysanoptera, Thripidae) and three related genera in Japan
Author
Masumoto, Masami
Author
Okajima, Shûji
text
Zootaxa
2007
1552
1
33
journal article
49300
10.5281/zenodo.178140
f7180371-ce51-411b-aeeb-0b9063e1d569
1175-5326
178140
Anascirtothrips
Bhatti
Anascirtothrips
Bhatti, 1961
. 26.
Type
species:
Anascirtothrips arorai
Bhatti, 1961
, by original designation and monotypy.
Female
. Macropterous. Head wider than long, slightly prolonged anteriorly, straight at cheeks, with interantennal projection broad and about 0.5 times as wide as width of first antennal segment (
Fig. 1
A); mouth-cone short, rounded at apex, with 3-segmented maxillary palpi. Compound eyes without pigmented ommatidia. Ocellar setae I present; setae III small. Postocular setae five pairs. Antennae 7-segmented, segment I without dorsal apical setae, II with microtrichial rows very weak and with two dorsal apical setae almost same sized, III and IV with sense-cones forked, III to VI with some rows microtrichia on both dorsal and ventral surfaces (
Fig. 1
B); number of setae on II to VI as follows: 7, 5, 5, 6, 9.
Pronotum wider than long, without elongate setae, sculptured with widely spaced transverse striae, without long posteroangular setae, with five pairs of small posteromarginal setae (
Fig. 1
A). Mesonotum sculptured with transverse anastomosing striae; median and submedian pairs of setae situated in front of posterior margin and usually arranged transversely (
Fig. 1
C). Metascutum with median pair of setae situated behind anterior margin; CPS absent (
Fig. 1
C). Metaepimeron with two setae. Metaepisternum without setae. Metapreepisternum developed with one seta. Prosternal ferna divided at middle; basantra membranous, without setae (
Fig. 2
A). Mesosternum with sternopleural sutures complete, reaching anterior margin; endofurca with or without spinula; spinasternum somewhat narrow and curved posteriorly at middle (
Fig. 2
A). Metasternal endofurca with spinula (
Fig. 2
A). Fore wing first vein with long gap in setal row; second vein with three setae widely spaced; clavus with four veinal and one discal setae; posteromarginal fringe cilia wavy. Tarsi 2-segmented.
Abdominal terga not clearly divided from laterotergites, without posteromarginal craspeda and ctenidia; terga II to VIII laterally and laterotergites areas with numerous ciliate microtrichia along transverse lines of sculpture, B1 setae much longer than distance between their bases (
Fig. 2
B); tergum VIII with posteromarginal comb complete (
Fig. 2
B); tergum IX without CPS (
Fig. 2
B); tergum X without median slit (
Fig. 2
B); sterna without discal setae and posteromarginal craspeda, with ciliate microtrichia along lines of sculpture at least laterally and with posteromarginal microtrichia (
Fig. 3
A); sterna III to VII with three pairs of posteromarginal setae, but II with two pairs. Ovipositor developed.
Male
. Macropterous. General structure as in female. Abdominal tergum IX without drepanae (
Fig. 3
B); sterna without glandular areas.
Comments
. This genus had hitherto been known from three species described from
Australia
,
India
and
Taiwan
, and they appear to be associated with
Ficus
leaves [
Moraceae
]. One Indian species,
A. arorai
Bhatti
, has been introduced to Florida and
Australia
by horticultural trading of cultivated
Ficus
plants (
Mound & Wang, 2000
). The genus can be distinguished from other members of the
Scirtothrips
group in
Japan
by above key, and the four species are distinguished in the key below.