Odontothrips bezii, Alavi & Minaei, 2022

Alavi, Jalil & Minaei, Kambiz, 2022, The genus Odontothrips in Iran with two new species (Thysanoptera: Thripidae), Zootaxa 5125 (4), pp. 379-388 : 383-384

Odontothrips bezii sp. n.

( Figs 6–17 )

Female macroptera. Body brown, fore tibiae yellow with brownish margins, fore tarsi yellow, mid and hind tarsi yellowish brown ( Fig. 6 ); antennal segments III–IV yellow, IV sometimes slightly shaded, other segments brown, II lighter apically, IV with yellowish basal ring ( Fig. 7 ); fore wings brown, pale at sub-basal fourth ( Fig. 15 ). Head slightly wider than long; ocellar setae III arising at middle of anterior margin of ocellar triangle, longer than other head setae ( Fig. 12 ); five pairs of postocular setae arranged in a one row, S1 and S5 setae slightly longer than remaining setae, S4 setae slightly behind setal row ( Fig. 12 ). Inner sense cone of segment VI occupying half the length of the segment, straight in outer margin, base of the sense cone more than 0.9 times as long as total length of the sense cone ( Fig. 8 ); segment III with convex outer margins ( Fig. 7 ). Pronotum slightly wider than long, smooth medially, with about 11 pairs of discal setae, two pairs of long posteroangular setae, four pairs of posteromarginal setae, median pair longest, S5 setae slightly behind setal row ( Fig. 12 ). Metascutum with median reticulations weak, with transverse striae anteriorly and longitudinal striae laterally; median pair of setae situated slightly behind anterior margin; one pair of campaniform sensilla present medially ( Fig. 13 ). Fore tarsi without teeth or tubercles; inner apex of fore tibia with one small tooth bearing a strong seta, also one small tooth more ventrally bearing a weak seta ( Figs 9–11 ). Fore wing first vein with 4+(12–15)+2 distal setae; second vein with 12–16 setae; clavus with 5 marginal and one discal seta ( Fig. 15 ). Abdominal tergite I with transversely reticulate sculpture; II–VIII with transverse lines of sculpture laterally, no lines reaching S1 setae; II with three lateral setae; VIII with posteromarginal comb interrupted medially, posterior margin of III–VII with microtrichia laterally decreasing in size and number towards basal segments; IX with two pairs of campaniform sensilla, tergite X median longitudinal split 0.4 times as long as length of the segment, extending to insertion of setae S1 ( Fig. 14 ). Abdominal sternite I with three small setae between hind coxae, III–VIII with three pairs of posteromarginal setae, median pair situated in front of posterior margin on VII.

Measurements (holotype female in microns). Body length 1750. Head, length 112; width across eyes 150; Ocellar setae III length 57–62. Pronotum, length 162, width 212; posteroangular setae length outer 67, inner 80. Metanotum median setae length 70. Fore wing, length 810. Abdominal tergite IX setae length: S1 150, S2 155, S3 150. Antennal segments I–VIII length 28, 35, 50, 52, 38, 55, 12, 19; sensorium on antennal VI length 27, length of base 25.

Male macroptera. Body colour same as female ( Fig. 16 ); abdominal tergite IX with one pair of thorn-like processes ( Fig. 17 ), sternites IV–VII with a posteromedially minute glandular opening (cf. Fig. 32 ), distance between the setae S1 on tergite IX 0.6–0.8 times as long as the setae length; genitalia without canaliculi and endothecal spines, parameres medially with a small dorsal tooth ( Fig. 17 ).

Measurements (paratype male in microns). Body length 1450. Head, length 100; width across eyes 147. Ocellar setae III length 57. Pronotum, length 155, maximum width 197; Antennal segments I–VIII length 25, 37, 57, 52, 37, 55, 12, 20.

Material examined. Holotype: female, IRAN: Khorasan-e shomali province, Khorashah , from flowering Sophora alopecuroides , 7.v.2015, J. Alavi.

Paratypes: 21 females, 3 males, same data as holotype. Ashkhaneh, Biyar waterfall , 7 females, flowering Glycyrrhiza glabra , 30.v.2014; Ashkhaneh, Haver village , 1 female, from flowering Lotus corniculatus , 30.v.2014; Bojnourd, Langar , 2 females, from flowering Glycyrrhiza glabra , 16.vi.2014; Jajarm , 9 females, from flowering Sophora alopecuroides , 26.v.2014; Khorashah , 8 females, from flowering S. alopecuroides , 24.v.2014; Sankhast , 20 females, 3 males, from flowering S. alopecuroides , 6.v.2014; Shirvan, Gelian village , 1 female, from flowering Astragalus brevidens , 19.v.2014. (all J. Alavi). Fars province: Bamou National Park , 1 female, from flowering Astragalus sp. , 28.iv.1999; Shiraz , 1 male, from flowering Glycyrrhiza glabra L., 30.viii.1998; same place, 2 females, from flowering Sophora sp. , 2.v.2008 ( KM69 ); same place and date , 4 females, from flowering Glycyrrhiza glabra ( KM72 ,); same place , 1 female, from flowering Medicago sativa , 9.v.2011, ( KM439 ). (all K. Minaei ) .

Etymology. This new species is named after my esteemed friend Mr. Behzad J. Yazdani, for all his sincere help and support in the many field trips for collecting thrips.

Remarks. In the key by Pitkin (1972) this species runs to O. phlomidinus in the second section of the last couplet, but O. bezii sp. n. is differs in having two small teeth at the apex of fore tibia (vs. one very minute tooth), and the colour of antennal segment IV is yellow (vs. brown). In the key provided by zur Strassen (2003) it runs to couplet 8 and stops there.

The new species is similar to O. mongolicus in colour of body, fore wings and antennae as well as structure of male genitalia. However, it is easily distinguished from that by having two small teeth at the apex of the fore tibia, of which the distinct inner one bears a stout seta ( Figs 9–11 ). In contrast, the apex of the fore tibia of O. mongolicus bears only one inner stout seta and one more ventrally small tooth (see Pelikan 1985, p. 131, Fig. 7 ; Dang et al 2010, pp. 215–216, Figs 19 and 24 ). Also, the outer margin of the sense cone on segment VI is straight in the new species but is convex at basal half and noticeably concave in apical half in O. mongolicus . In males, the absence of canaliculi and endothecal spines is not common among Odontothrips species. The two new species described here, together with O. mongolicus are the only known species with this character state. Surprisingly, there is no distinct difference in genitalia between O. bezii sp. n. and O. mongolicus , but they are different in the structure of tibial apex as explained in females. The similarity of genitalia in the males of Odontothrips species is not unusual as mentioned above.

Figures

FIGURES 6–17. Odontothrips bezii sp. n. Female 6–15: (6) body, (7) antennal segments I–VIII, (8) antennal segments VI– VIII, (9–11) fore tarsus and apex of fore tibia (9 and 10 lateral views), (12) head & pronotum, (13) meso- & metanotum, (14) abdominal tergites VIII–X, (15) fore wing. Male 16–17: (16) body, (17) abdominal tergites XI–X and genitalia.

FIGURES 18–33. Odontothrips pitkini sp. n. Female 18–29: (18) body, (19) antennal segments I–VIII, (20) antennal segments VI–VIII, (21–22) antennal segments I–III, (23–25) fore tarsus and apex of fore tibia (25 lateral views), (26) head & pronotum, (27) meso- & metanotum, (28) abdominal tergites VIII–X, (29) fore wing. Male 30–33: (30) body, (31) fore wing, (32) abdominal sternites IV– VII, (33) abdominal tergites XI–X and genitalia.