1. Female abdominal sternites IV-VI or IV-VII with a pair of discal setae; male antennal segment VI hairy, about 5 times as long as segment III ... auratus -- Female abdominal sternites without discal setae ... 2 2. Female abdominal tergites II-VII with lateral transverse striae, and dense microtrichia on them ... 3 -- Female abdominal tergites II-VII with lateral transverse striae, without or, at most, with
sparse microtrichia on them ... 4 3. Female antennal segments III and IV in different colors from segments II and V-VIII; male
antennal segment VI about 1.4 times as long as segment III ... glycines -- Female antennal segments II – VIII in same color; male antennal segment VI hairy, about 4 times as long as segment III ... ravidus Fig. 67. Microcephalothrips abdominalis (♀) A. antenna; B. forewing; C. head; D. pronotum; E. tergites
V and VI.
hripidae
Genus Mycterothrips Trybom
Mycterothrips Trybom, 1910: 158. Type species: Mycterothrips laticauda Trybom, 1910.
Two pairs of anteocellar setae, one pair of interocellar situated between posterior ocelli.
Antennae 8-segmented. Pronotum with 2 long setae each on posteroangulars, 2 pairs of inner setae. Mesofurca with spinula, metafurca with or without spinula. Upper vein of forewing with 2 distal setae, lower vein setae arranged evenly. Laterals of abdominal tergites II-VII with transverse striae, with or without obvious microtrichia, with posterolateral teeth; posterior comb on tergite VIII complete. Sternites with or without discal setae. Male antennal segment VI normal or a little longer, or longer and hairy; abdomen without sternal glandular areas. Over 30 species in the world.
Key to species of Mycterothrips in Taiwan
1. Female abdominal sternites IV-VI or IV-VII with a pair of discal setae; male antennal segment VI hairy, about 5 times as long as segment III ... auratus -- Female abdominal sternites without discal setae ... 2 2. Female abdominal tergites II-VII with lateral transverse striae, and dense microtrichia on them ... 3 -- Female abdominal tergites II-VII with lateral transverse striae, without or, at most, with
sparse microtrichia on them ... 4 3. Female antennal segments III and IV in different colors from segments II and V-VIII; male
antennal segment VI about 1.4 times as long as segment III ... glycines -- Female antennal segments II – VIII in same color; male antennal segment VI hairy, about 4 times as long as segment III ... ravidus Fig. 67. Microcephalothrips abdominalis (♀) A. antenna; B. forewing; C. head; D. pronotum; E. tergites
V and VI.
hripidae
Male color and body shape similar to female, but smaller. Antennal segments III and IV about same length, longer than other segments; VI slightly shorter. Posterior end of tergite IX with 3 pairs of setae, median pair shortest.
Distribution: Taiwan.
Habitat: Flowers of Aralia bipinnata.
Fig. 68. Mycterothrips araliae A. antenna upper ♀, lower ♂; (♀) B. forewing; C. head; D. pronotum; E.
tergites VII and VIII. 4. Female abdominal tergites VI and VII with posterolateral comb of spines; abdomen in
darker color toward posterior segments; male unknown ... caudibrunneus -- Female abdominal tergites VI and VII without posterolateral comb or microtrichia;
abdominal segments in similar color; male antennal segment VI shorter than segment III ... araliae
Mycterothrips araliae Takahashi
(Fig. 68) Taeniothrips araliae Takahashi, 1936: 434.Mycterothrips araliae (Takahashi); Bhatti, 1978b: 185.
Female body length 1.4 mm on slide. Body yellow, abdomen in lighter color than head and thorax, laterals of thorax and abdomen somewhat orange; antennae brown, segment I whitish yellow, II brown, III brown with basal 1/3 and distal end paler, IV brown with base paler, V-VIII brown; forewings brown; legs yellow.
Head wider than long, transverse striae posterior to compound eyes. Two pairs of anteocellar setae, situated in front of, and on sides of, anterior ocellus, one pair of interocellar setae between 2 posterior ocelli. One seta behind each posterior ocellus, longer than other ocular setae.
Maxillary palpi 3-segmented. Antennae 8-segmented, segments III and IV about same length and longer than other segments, vasiform on both ends, with forked sense cone.
Posteroangulars of pronotum with 2 pairs of long setae, about same length; 2 pairs of posteromarginal setae in between, median pair longer; about 56 discal setae (including anteromarginal setae). Meso- and metafurca spinula present. Upper vein of forewing with 7 or 8 basal setae, 2 distal setae; lower vein with 13 setae, arranged evenly.
Several rows of transverse striae and brown spots on laterals of tergites I-VIII; 2 pairs of setae on outer sides of spots, these setae longer toward posterior segments; posterior comb on tergite VIII complete. Sternites without discal setae.
hripidae
Male color and body shape similar to female, but smaller. Antennal segments III and IV about same length, longer than other segments; VI slightly shorter. Posterior end of tergite IX with 3 pairs of setae, median pair shortest.
Distribution: Taiwan.
Habitat: Flowers of Aralia bipinnata.
Fig. 68. Mycterothrips araliae A. antenna upper ♀, lower ♂; (♀) B. forewing; C. head; D. pronotum; E.
tergites VII and VIII.
4. Female abdominal tergites VI and VII with posterolateral comb of spines; abdomen in darker color toward posterior segments; male unknown ... caudibrunneus -- Female abdominal tergites VI and VII without posterolateral comb or microtrichia;
abdominal segments in similar color; male antennal segment VI shorter than segment III ... araliae
Mycterothrips araliae Takahashi
(Fig. 68) Taeniothrips araliae Takahashi, 1936: 434.Mycterothrips araliae (Takahashi); Bhatti, 1978b: 185.
Female body length 1.4 mm on slide. Body yellow, abdomen in lighter color than head and thorax, laterals of thorax and abdomen somewhat orange; antennae brown, segment I whitish yellow, II brown, III brown with basal 1/3 and distal end paler, IV brown with base paler, V-VIII brown; forewings brown; legs yellow.
Head wider than long, transverse striae posterior to compound eyes. Two pairs of anteocellar setae, situated in front of, and on sides of, anterior ocellus, one pair of interocellar setae between 2 posterior ocelli. One seta behind each posterior ocellus, longer than other ocular setae.
Maxillary palpi 3-segmented. Antennae 8-segmented, segments III and IV about same length and longer than other segments, vasiform on both ends, with forked sense cone.
Posteroangulars of pronotum with 2 pairs of long setae, about same length; 2 pairs of posteromarginal setae in between, median pair longer; about 56 discal setae (including anteromarginal setae). Meso- and metafurca spinula present. Upper vein of forewing with 7 or 8 basal setae, 2 distal setae; lower vein with 13 setae, arranged evenly.
Several rows of transverse striae and brown spots on laterals of tergites I-VIII; 2 pairs of setae on outer sides of spots, these setae longer toward posterior segments; posterior comb on tergite VIII complete. Sternites without discal setae.
hripidae
Fig. 69. Mycterothrips auratus A. antenna; B-E (♀): B. forewing; C. head; D. pronotum; E. tergies VII and VIII; F. tergites VIII-X.
Mycterothrips auratus Wang
(Fig. 69) Mycterotyrips auratus Wang, 1999: 232.Female body length 1.0-1.1 mm on slide. Head and thorax yellowish brown, abdomen brown;
antennal segment I light yellow, II and III pale brown, II darker, IV- VIII brown; forewings light yellow; legs light yellow.
Head wider than long, with transverse striae behind compound eyes. Two pairs of anteocellar setae, one pair of interocellar setae between 2 posterior ocelli. One seta behind each posterior ocellus, longer than other ocular setae. Maxillary palpi 3-segmented. Antennae 8-segmented, segments III and IV with forked sense cone.
Posteroangulars of pronotum with 2 pairs of long setae, about same length; 2 pairs of posteromarginal setae in between, median pair longer; about 28 discal setae (anteromarginal setae included). Meso- and metafurca spinula present. Upper vein of forewing with 7 or 8 basal setae, 2 distal setae; lower vein with 13-16 setae, arranged evenly.
Weak transverse striae on laterals of tergites I-VII; posterior comb on tergite VIII complete.
Sternites IV-VI or IV-VII with one pair of discal setae.
Male brown; antennae brown, segment I in paler color. Structure of antennae quite different from female. Segment V short, bowl-shaped, VI with long dense hair, VII and VIII short and small. Posterior end of tergite IX with 3 pairs of setae, median pair shortest.
Distribution: Taiwan.
Habitat: Morus sp.
hripidae
Fig. 69. Mycterothrips auratus A. antenna; B-E (♀): B. forewing; C. head; D. pronotum; E. tergies VII and VIII; F. tergites VIII-X.
Mycterothrips auratus Wang
(Fig. 69) Mycterotyrips auratus Wang, 1999: 232.Female body length 1.0-1.1 mm on slide. Head and thorax yellowish brown, abdomen brown;
antennal segment I light yellow, II and III pale brown, II darker, IV- VIII brown; forewings light yellow; legs light yellow.
Head wider than long, with transverse striae behind compound eyes. Two pairs of anteocellar setae, one pair of interocellar setae between 2 posterior ocelli. One seta behind each posterior ocellus, longer than other ocular setae. Maxillary palpi 3-segmented. Antennae 8-segmented, segments III and IV with forked sense cone.
Posteroangulars of pronotum with 2 pairs of long setae, about same length; 2 pairs of posteromarginal setae in between, median pair longer; about 28 discal setae (anteromarginal setae included). Meso- and metafurca spinula present. Upper vein of forewing with 7 or 8 basal setae, 2 distal setae; lower vein with 13-16 setae, arranged evenly.
Weak transverse striae on laterals of tergites I-VII; posterior comb on tergite VIII complete.
Sternites IV-VI or IV-VII with one pair of discal setae.
Male brown; antennae brown, segment I in paler color. Structure of antennae quite different from female. Segment V short, bowl-shaped, VI with long dense hair, VII and VIII short and small. Posterior end of tergite IX with 3 pairs of setae, median pair shortest.
Distribution: Taiwan.
Habitat: Morus sp.
hripidae
Fig. 70. Mycterothrips caudibrunneus (♀) A. antenna; B. forewing; C. head; D. pronotum; E. tergites VII and VIII.
Mycterothrips caudibrunneus Wang
(Fig. 70) Mycterothrips caudibrunneus Wang, 1999: 234.Female body length 1.1 mm on slide. head and thorax yellow, abdomen grayish brown, darker toward posterior segments, segments VI-X brownish; antennal segment I pale brown, II brown, bases of III and IV grayish brown, the rest of antennae brown; legs light yellow; forewings light brown; legs yellow.
Head wider than long, transverse striae posterior to compound eyes. Two pairs of anteocellar setae, situated in front of, and on sides of, anterior ocellus, one pair of interocellar setae between 2 posterior ocelli. One seta behind each posterior ocellus, longer than other ocular setae.
Maxillary palpi 3-segmented. Antennae 8-segmented, distal end of segments III not vasiform, III and IV with forked sense cone, III or IV about same length as VI.
Posteroangulars of pronotum with 2 pairs of long setae, about same length; 2 pairs of posteromarginal setae in between, median pair longer; about 48 discal setae (anteromarginal setae included). Meso- and metafurca spinula present. Upper vein of forewing with 7 or 8 basal setae, 2 distal setae; lower vein with 10-11 setae, arranged evenly.
Rows of transverse striae on laterals of tergites II-VII; sparse and weak microtrichia only on transverse striae on posterior portion of tergites VII and VIII; a row of microtrichia on posterolateral margin of tergites II-VII, stronger toward posterior segments, form triangular teeth on tergites VI and VII; posterior comb on tergite VIII complete. Sternites without discal setae.
Male unknown.
Distribution: Taiwan.
Habitat: Miscanthus sp., Ampelepaia sp., weeds.
hripidae
Fig. 70. Mycterothrips caudibrunneus (♀) A. antenna; B. forewing; C. head; D. pronotum; E. tergites VII and VIII.
Mycterothrips caudibrunneus Wang
(Fig. 70) Mycterothrips caudibrunneus Wang, 1999: 234.Female body length 1.1 mm on slide. head and thorax yellow, abdomen grayish brown, darker toward posterior segments, segments VI-X brownish; antennal segment I pale brown, II brown, bases of III and IV grayish brown, the rest of antennae brown; legs light yellow; forewings light brown; legs yellow.
Head wider than long, transverse striae posterior to compound eyes. Two pairs of anteocellar setae, situated in front of, and on sides of, anterior ocellus, one pair of interocellar setae between 2 posterior ocelli. One seta behind each posterior ocellus, longer than other ocular setae.
Maxillary palpi 3-segmented. Antennae 8-segmented, distal end of segments III not vasiform, III and IV with forked sense cone, III or IV about same length as VI.
Posteroangulars of pronotum with 2 pairs of long setae, about same length; 2 pairs of posteromarginal setae in between, median pair longer; about 48 discal setae (anteromarginal setae included). Meso- and metafurca spinula present. Upper vein of forewing with 7 or 8 basal setae, 2 distal setae; lower vein with 10-11 setae, arranged evenly.
Rows of transverse striae on laterals of tergites II-VII; sparse and weak microtrichia only on transverse striae on posterior portion of tergites VII and VIII; a row of microtrichia on posterolateral margin of tergites II-VII, stronger toward posterior segments, form triangular teeth on tergites VI and VII; posterior comb on tergite VIII complete. Sternites without discal setae.
Male unknown.
Distribution: Taiwan.
Habitat: Miscanthus sp., Ampelepaia sp., weeds.
hripidae
Fig. 71. Mycterothrips glycines (♀) A. antenna; B. forewing; C. head; D. pronotum; E. tergites VII and VIII.
Mycterothrips glycines (Okamoto)
(Fig. 71) Euthrips glycines Okamoto, 1911: 221.Physothrips glycines (Okamoto); Karny, 1912: 340.
Taeniothrips (Physothrips) glycines (Okamoto); Moulton, 1928b: 326.
Mycterothrips glycines (Okamoto); Bhatti, 1969b: 378.
Female body length 1.6 mm on slide. Grayish yellow, laterals of thorax and abdomen light orange; antennae segment I transparent yellow, II brown except distal end, III yellow with middle grayish, IV- VIII grayish brown but base of IVpaler; forewings brown; legs light yellow.
Head wider than long, transverse striae posterior to compound eyes. Two pairs of anteocellar setae, situated in front of, and on sides of, anterior ocellus, one pair of interocellar setae between 2 posterior ocelli. One seta behind each posterior ocellus, longer than other ocular setae.
Maxillary palpi 3-segmented. Antennae 8-segmented, segments III vasiform, about same length as VI, IV shorter, III and IV with forked sense cone.
Posteroangulars of pronotum with 2 pairs of long setae, about same length; 2 pairs of posteromarginal setae in between, median pair longer; 5-8 discal setae. Meso- and metafurca spinula present. Forewing with 27-29 costal setae, upper vein with 7 or 8 basal setae, 2 distal setae; lower vein with 12 setae, arranged evenly.
Multiple rows of transverse striae on laterals of tergites II-VIII; obvious microtrichia on these striae ; posterior comb on tergite VIII complete. Sternites without discal setae.
Male smaller. Antennae 3 times as long as head, segments VI longest, segment III only 2/3the length of VI, segments I-III light yellow to yellow, V-VIII dark brown.
Distribution: Taiwan.
Habitat: legumes, Glycine max, weeds.
hripidae
Fig. 71. Mycterothrips glycines (♀) A. antenna; B. forewing; C. head; D. pronotum; E. tergites VII and VIII.
Mycterothrips glycines (Okamoto)
(Fig. 71) Euthrips glycines Okamoto, 1911: 221.Physothrips glycines (Okamoto); Karny, 1912: 340.
Taeniothrips (Physothrips) glycines (Okamoto); Moulton, 1928b: 326.
Mycterothrips glycines (Okamoto); Bhatti, 1969b: 378.
Female body length 1.6 mm on slide. Grayish yellow, laterals of thorax and abdomen light orange; antennae segment I transparent yellow, II brown except distal end, III yellow with middle grayish, IV- VIII grayish brown but base of IVpaler; forewings brown; legs light yellow.
Head wider than long, transverse striae posterior to compound eyes. Two pairs of anteocellar setae, situated in front of, and on sides of, anterior ocellus, one pair of interocellar setae between 2 posterior ocelli. One seta behind each posterior ocellus, longer than other ocular setae.
Maxillary palpi 3-segmented. Antennae 8-segmented, segments III vasiform, about same length as VI, IV shorter, III and IV with forked sense cone.
Posteroangulars of pronotum with 2 pairs of long setae, about same length; 2 pairs of posteromarginal setae in between, median pair longer; 5-8 discal setae. Meso- and metafurca spinula present. Forewing with 27-29 costal setae, upper vein with 7 or 8 basal setae, 2 distal setae; lower vein with 12 setae, arranged evenly.
Multiple rows of transverse striae on laterals of tergites II-VIII; obvious microtrichia on these striae ; posterior comb on tergite VIII complete. Sternites without discal setae.
Male smaller. Antennae 3 times as long as head, segments VI longest, segment III only 2/3the length of VI, segments I-III light yellow to yellow, V-VIII dark brown.
Distribution: Taiwan.
Habitat: legumes, Glycine max, weeds.
hripidae
Fig. 72. Mycterothrips ravidus A. antenna (upper ♀, lower ♂); B(♀). forewing; C. head; D. pronotum;
E. tergites VII and VIII.
Mycterothrips ravidus Wang
(Fig. 72) Mycterothrips ravidus Wang, 1999: 236.Female body length 1.4 mm on slide. Body grayish brown, thorax and abdomen with brown spots, obvious on laterals of tergites II-VII; antennae segment I light brown, same color as head, the rest segments brown; forewings grayish brown; legs grayish brown.
Head wider than long, transverse striae posterior to compound eyes. Two pairs of anteocellar setae, situated in front of, and on sides of, anterior ocellus, one pair of interocellar setae between 2 posterior ocelli. One seta behind each posterior ocellus, longer than other ocular setae.
Maxillary palpi 3-segmented. Antennae 8-segmented, segments III and IV with forked sense cone.
Posteroangulars of pronotum with 2 pairs of long setae, about same length; 2 pairs of posteromarginal setae in between, median pair longer; 46-48 discal setae. Meso- and metafurca spinula present. Upper vein of forewing with 7 or 8 basal setae, 2 distal setae; lower vein with 15-16 setae, arranged evenly.
Transverse striae and microtrichia obvious on laterals of tergites II-VII, last row on posterior margin; posterior comb on tergite VIII complete. Sternites without discal setae.
Male grayish brown, abdomen slender. Antennae brown, segment V bowl-shaped, VI long and hairy, VII and VIII short. Posteromargin of tergite VIII with slender and complete comb; median of tergites IX with 3 pairs of long setae. Sternites IV-VII with discal setae.
Distribution: Taiwan.
Habitat: Liquidambar sp., Passiflora sp., Ficus sp., fern, Morus sp, weeds.
hripidae
Fig. 72. Mycterothrips ravidus A. antenna (upper ♀, lower ♂); B(♀). forewing; C. head; D. pronotum;
E. tergites VII and VIII.
Mycterothrips ravidus Wang
(Fig. 72) Mycterothrips ravidus Wang, 1999: 236.Female body length 1.4 mm on slide. Body grayish brown, thorax and abdomen with brown spots, obvious on laterals of tergites II-VII; antennae segment I light brown, same color as head, the rest segments brown; forewings grayish brown; legs grayish brown.
Head wider than long, transverse striae posterior to compound eyes. Two pairs of anteocellar setae, situated in front of, and on sides of, anterior ocellus, one pair of interocellar setae between 2 posterior ocelli. One seta behind each posterior ocellus, longer than other ocular setae.
Maxillary palpi 3-segmented. Antennae 8-segmented, segments III and IV with forked sense cone.
Posteroangulars of pronotum with 2 pairs of long setae, about same length; 2 pairs of posteromarginal setae in between, median pair longer; 46-48 discal setae. Meso- and metafurca spinula present. Upper vein of forewing with 7 or 8 basal setae, 2 distal setae; lower vein with 15-16 setae, arranged evenly.
Transverse striae and microtrichia obvious on laterals of tergites II-VII, last row on posterior margin; posterior comb on tergite VIII complete. Sternites without discal setae.
Male grayish brown, abdomen slender. Antennae brown, segment V bowl-shaped, VI long and hairy, VII and VIII short. Posteromargin of tergite VIII with slender and complete comb; median of tergites IX with 3 pairs of long setae. Sternites IV-VII with discal setae.
Distribution: Taiwan.
Habitat: Liquidambar sp., Passiflora sp., Ficus sp., fern, Morus sp, weeds.
hripidae