Hyalopterothrips brunneus, Alavi & Yazdanian & Minaei, 2018

Alavi, Jalil, Yazdanian, Mohsen & Minaei, Kambiz, 2018, Anaphothrips sineconus and Hyalopterothrips brunneus, two new species of Anaphothrips genus-group (Thysanoptera) from Iran, Zootaxa 4388 (3), pp. 437-443 : 441

Hyalopterothrips brunneus sp. n.

( Figs 7–16 )

Female macroptera. Body brown including legs ( Fig. 7 ); tergites II–VII with a pair of pale round spots laterally; antenna brown, I yellowish brown at apex, II yellowish brown at basal half ( Fig. 9 ); fore wing shaded as well as its setae and fringes, veins well defined with shaded pale brown color. Head wider than long; ocellar setae I present; ocellar setae III arise inside ocellar triangle ( Fig. 8 ); eyes with six pigmented facets. Antenna 8–segmented, segment VI without partial suture, segments III and IV each with forked sense cone. Pronotum rather trapezoidal, with transverse lines of sculpture ( Fig. 8 ); two pairs of well-developed posteroangular setae; three vestigial pairs of posteromarginal setae, discal setae vestigial. Mesonotum with anteromedian campaniform sensilla and transverse anastomosing sculpture lines; median pair of setae far ahead of posterior margin. Metanotum with reticulate sculpture; median pair of setae near to anterior margin, distance between median pair of metanotal setae greater than distance between median and submedian; campaniform sensilla absent ( Fig. 10 ). Fore wing costa with 25–26 setae, upper vein setae broadly interrupted with 3+3+3, 3+3+2 or 3+4+3 setae, lower vein with 4 widely interrupted setae; clavus with 4–5 marginal setae and one discal setae. Abdominal tergites with numerous transverse lines; posterior margin of abdominal tergite VIII smooth, without comb; tergite IX with two pairs of campaniform sensilla as well as other tergites ( Fig. 12 ), setae S1 subequal to S2 and equidistant from each other; X with complete split. Abdominal sternites and laterotergites II–VIII without discal setae; sternite II with 2 pairs of posteromarginal setae; III–VII with 3 pairs of posteromarginal setae, median setae on VII far ahead of posterior margin ( Fig. 13 ).

Measurements in microns (holotype female in microns). Distended body length 1640. Head, length 110; width across cheeks 138. Pronotal median length 137; maximum width 205; inner posteroangular setae 35; outer posteroangular setae 37–50. Fore wing length 780. Tergite IX, mediodorsal setae 22–24; posteromarginal setae S1 113, setae S2 107. Tergite X, posteromarginal setae S1 63–67. Antennal segments I–VIII L(W): 17(25), 40(24), 50(18), 37(18), 35(18), 54(15), 10(7), 15(5).

Male macroptera. Body brown including legs, fore tibia and tarsus slightly lighter ( Fig. 14 ); antenna brown, segments III–IV somewhat lighter. Structure similar to female. Abdominal sternites III–IV each with one oval pore plate ( Fig. 16 ); tergite IX with two pairs of stout bit short spines, anteriors somewhat stouter and longer than posterior ones ( Fig. 15 ).

Measurements in microns (paratype male in microns). Distended body length 1300. Head, length 100; width across cheeks 112. Pronotal median length 105; maximum width 150; inner posteroangular setae 28; outer posteroangular setae 30. Fore wing length 550. Antennal segments I–VIII L(W): 15(22), 35(22), 45(), 35(17), 32(17), 45(15), 10(7), 10(5).

Material studied. Holotype female (macroptera), IRAN, Khorasan-e Razavi province, Mahvelat, Miyandehi, from Bassia sp. [ Amaranthaceae ], 4.iv.2013, A. Nemati & M. Yazdanian. Paratypes: 8 females, 4 males with same data as holotype.

Etymology. Species name is derived from Latin word " brunneus ", refers to the brown body of the new species.

Comments. Three species are included in Hyalopterothrips , H. crocatus , H. hieroglyphicus and H. luteus . The latter species is unique in having simple sense cones on antennal segments III–IV while the sense cones are forked in two other species as well as the new species discussed here. H. brunneus is distinguished from H. hieroglyphicus and H. crocatus by small interocellar setae (vs. well developed), and minute setae on posterior margin of pronotum (vs. developed innermost pair). Moreover, the female of the new species differs from H. hieroglyphicus by the following character states: posterior margin of pronotum with three pairs of setae (vs. four pairs), abdominal tergite X entirely split dorsally (vs. not entirely split). In the new species sternites III–IV of male bear only one ovale pore plate whereas in H. crocatus , H. hieroglyphicus each usually with a transverse and two rounded pore plates on sternites III–V or VI.

Figures

FIGURES 7–16. Hyalopterothrips brunneus sp. n. Female: (7–13): (7) Body, (8) Head & pronotum, (9) Antenna, (10) Meso- and metanotum, (11) Pro- meso- and metasternum, (12) Abdominal tergites VII–X, (13) Abdominal sternite VII. Male: (14– 16): (14) Body, (15) Abdominal sternites II–V, (16) Abdominal tergites VIII–X.