Neohydatothrips abnormis (Karny)

Minaei, Kambiz, 2016, The genus Neohydatothrips (Thysanoptera: Thripidae) in Iran with one new species and first record of a micropterous form, Zootaxa 4189 (2), pp. 367-377 : 368-370

Neohydatothrips abnormis (Karny)

( Figs 1 –13)

Euthrips abnormis Karny, 1910: 45 .

Described from Austria, this species is reported from various parts of Europe on Fabaceae species in such genera as Genista and Astragalus (zur Strassen 2003). Recently a large number of N. abnormis were collected on Astragalus sp. from south west of Iran (Kohgiluyeh and Boyer-Ahmad province) ( Minaei 2016).

Female macroptera. Strongly bicoloured; head brown, postoccipital region yellow-brown but pronotum yellow; meso and metanotum dark brown, meso and metasternum light brown; abdominal segments I–II yellowbrown, VII–X brown; legs yellow, fore and mid coxae light brown, hind coxae brown; fore wing pale with faintly shaded area in sub-basal area, clavus weakly shaded. Antennal segments mainly yellow, with faint shadings at apex of III–VI, VII–VIII light brown ( Fig. 1 ).

Head with occipital apodeme very close to, but not confluent with, posterior margin of eyes ( Fig. 3 ); ocellar triangle with weak sculptured lines; ocellar setae III close together, within ocellar triangle ( Fig. 3 ). Pronotum transversely reticulate without internal markings, blotch weakly defined ( Fig. 3 ). Mesonotum striate, median setal pair anterior to lateral pair. Metanotum with linear reticulation ( Fig. 4 ). Metasternal plate with shallow anterior emargination ( Fig. 7 ). Fore wing second vein with no setae ( Fig. 8 ); clavus with 1 discal seta. Tergites II–VI with comb of microtrichia incomplete, VII–VIII with complete comb; tergite IX with 2 pairs of mid-dorsal setae ( Fig. 5 ).

Measurements (one female, in microns). Body length 1231. Head length (width) 122 (191); ocellar setae III length 24. Pronotum length (width) 118 (212). Fore wing length 735. Antennal segments III–VIII length 53, 45, 40, 36, 9, 20.

Female microptera. Very similar to macroptera form (Figs. 9, 11). Wings short (Fig. 13); metasternum narrower than macropterous form (Fig. 12); tergites without microtrichia on median discal area (Fig. 10).

Measurements (one female microptera, in microns). Body length 1245. Head length (width) 126 (190); ocellar setae III length?. Pronotum length (width) 128 (229). Fore wing length 293. Antennal segments III–VIII length 59, 50, 47, 47, 10, 20.

Male macroptera. Similar to but smaller than female. Postoccipital area as well as tergite VII yellow. Tergite VII with comb of microtrichia absent medially ( Fig. 6 ). Sternites without glandular area.

Measurements (one male, in microns). Body length 1043. Head length (width)108 (180); ocellar setae III length 24. Pronotum length (width) 110 (197). Fore wing length 583. Antennal segments III–VIII length 56, 46, 38, 38, 9, 13.

Male microptera. Similar to macroptera form but smaller.

Measurements (one male microptera, in microns). Body length 1042. Head length (width) 100 (160); ocellar setae III length 24. Pronotum length (width) 111 (175). Fore wing length 249. Antennal segments (not possible to measure).

FIGURES 9–13. Neohydatothrips abnormis (microptera) (9) Female; (10) Tergites III–VII; (11) Tergites VII–X; (12) Metasternum; (13) Fore wing.

Material studied. IRAN, Fars province, Arsenjan , macropterae, 6 females, 1 male, on Astragalus sp. , 15.iv.2016 (KM 1416, 1417). Kohgiluyeh and Boyer-Ahmad province, Bashar riverside, micropterae, 12 females, 6 males, on Astragalus sp. , 12.vi.2015 (KM 1365).

Comments. Similar to the new species described below, N. abnormis is strongly bicoloured, but these two species are readily distinguished from each other by the above key. Moreover, the occipital apodeme is very close to but not touching the compound eye posterior margin in abnormis , but is confluent with the compound eye margin in amygdali . Also abdominal segments I–III in abnormis are yellow-brown while abdominal segments I–VI are uniformly yellow in amygdali . Finally, the fore wing of abnormis has no band, in contrast to the banded fore wing of amygdali . This is the first record of a brachypterous form of a Neohydatothrips species. The brachypterous form is essentially similar to the micropterous one. With the current classification of Sericothripinae , the brachypterous form will run to Neohydatothrips due to its metasternum shape, as well as the lack of microtrichia on the median discal area of the tergites.

Figures

FIGURES 1 – 8. Neohydatothrips abnormis (macroptera) (1) Female; (2) Male; (3) Head and pronotum; (4) Meso and metanotum; (5) Tergites VII – X; (6) Tergites VII – X (male); (7) Metasternum; (8) Fore wing.