Tamarixia dorchinae Yefremova & Yegorenkova

Burckhardt, Daniel, Yefremova, Zoya & Yegorenkova, Ekaterina, 2015, The jumping plant-louse Diaphorina teucrii sp. nov. (Hemiptera, Liviidae) associated with Teucrium (Lamiaceae) and its parasitoid Tamarixia dorchinae sp. nov. (Hymenoptera, Eulophidae) from the Negev desert, Israel, Zootaxa 3920 (3), pp. 463-473 : 467-469

Tamarixia dorchinae Yefremova & Yegorenkova , sp. nov.

( Figs 17–22 )

Material examined. Holotype ♀, Israel: Borot Loz, 30°29’N 34°33’E, 14.v.2013 reared from Diaphorina teucrii which was collected the 12.v.2013 on Teucrium capitatum (N. Dorchin) , ( TAUI).

Paratypes. Israel: 19 ♀, 18 ♂, same data as holotype ( TAUI, NHMB, BMNH).

Diagnosis. Female: length 0.75–0.90 mm; clava 2.8–3.3 times as long as F3 ( Fig. 19 ); MV 1.1 times as long as SMV; MV with 5–6 setae ( Fig. 20 ); mesoscutum with complete median line; forewing with large speculum broad and closed extending along MV. Male (length 0.65–0.72 mm): antenna ( Fig. 21 ); pedicel 1.8 times as long as F1, tip of whorled setae on F1 reaching middle of F4, whorled setae on F2 reaching middle of C3. Gaster 1.4–1.5 times as long as broad.

Description. Female ( Fig. 17 ). Body length 0.90 mm, forewing length 0.80 mm. Colour. Head, thorax, gaster black. Eyes red. Ocelli white. Antenna with basal part of scape yellow, otherwise dark, pedicel yellow brown dorsally, funicle and clava brownish. Tegulae black. Fore and mid legs: coxae black with yellow top, basal half of femora black, other part yellow, tibiae yellow, tarsi yellow with brown apical segment; hind legs: coxae black with yellow apex, 2/3 of femora black, tibiae with black spot dorsally. Head height 2.0 times as long as head length. Face smooth. Eyes 1.1 times as long as broad, without setae. Malar sulcus straight. Toruli below level of the lower margin of eyes, scape reaching median ocellus. Antenna ( Fig. 19 ) with scape 4.3 times as long as broad, pedicel 1.6 times length of F1 and 1.6 times as long as broad, one discoid anellus, funicle. F1 1.3 times as long as broad, F2 1.1 times as long as broad and 1.2 shorter than F1, F3 subquadrate and as long as F2, clava 3-segmented, 2.1 times as long as broad and 3.2 times as long as F3, with apical sensillum, C1, C2 and C3 of subequal length. Mesosoma: thorax 1.28 times as long as broad and 1.04 times as long as gaster. Pronotum short. Mesoscutum 1.3 times as long as broad, with median line complete, with 2 pairs of short dark adnotaular setae. Scutellum 1.1 times as long as broad, with submedian and sublateral lines, with 2 pairs of setae; distance between submedian lines as long as between sublateral lines. Sculpture on scutellum the same as on mesoscutum. Propodeum 4.0 times as long as broad, smooth, with median carina, spiracle round with paraspiracular carina near metanotum, callus with 2 long setae. Forewing ( Fig. 20 ) 2.3 times as long as broad. Speculum broad extending along MV, closed. MV 1.1 times as long as SMV and 4.5 times as long as STV. SMV with 1 seta, MV with 6 setae, cilia 1.2 times as long as STV. Hindwing apically acute. Metasoma 1.3–1.4 times as long as broad. Ovipositor sheaths 0.15 length of gaster.

Variation: body length 0.75–0.90 mm, forewing length 0.67–0.80 mm, pedicel 1.5–1.6 times length of F1, thorax 1.20–1.28 times as long as broad, mesoscutum 1.1–1.3 times as long as broad, MV with 5–6 setae.

Male ( Fig. 18 ). Body length 0.65–0.72 mm. Male almost identical with female in colour but differs in structure of antenna and forewing. Antenna ( Fig. 21 ): scape 1.7 times as long as broad, ventral plaque 0.30–0.32 length of scape, pedicel 1.1 times as long as broad, with one anellus, F1 1.1 broader than long, F2 1.3–1.4 times as long as broad, and 1.3–1.4 times longer than F1, F3 1.4–1.5 times as long as broad and as long as F2, F4 1.3–1.4 times as long as broad and 1.1 times as long as F3, clava 3-segmented with apical sensillum, 3.9–4.4 times as long as broad and 2.2–2.3 times as long as F4; C1 1.6 times as long as broad, C2 1.8 times as long as broad, C3 2.0 times as long as broad, C1 equal to C2 and C3. Funicle with 4 segments with whorled setae, tips of whorled setae of F1 reaching middle of F4, tips of whorled setae of F2 reaching middle of C1, whorls of F3 reaching middle of C2, whorls of F4 reaching middle of C3, whorls of C1 reaching top of apical placoid sensillum, whorls of C2 and C3 little longer than sensillum. Forewing ( Fig. 22 ) 2.25 times as long as broad. Speculum broad and extending along MV, closed and slightly narrower than that in female. SMV as long as MV, MV 4.2 times as long as SV. SMV with 1 seta, MV with 5–6 setae, cilia 1.1–1.2 times as long as SV. Thorax 1.1–1.2 times as long as gaster. Gaster 1.4–1.5 times as long as broad. Aedeagus 2/3 of gaster length and 2.5 times as long as digitus.

Etymology. Named in honour of Dr Netta Dorchin who collected the type series.

Distribution. Israel.

Host. Diaphorina teucrii sp. nov. ( Liviidae, Euphyllurinae ).

Discussion. The new species resembles Tamarixia pronomus but differs in following characters. Female: length 0.75–0.90 mm (0.80–1.50 mm in T. pronomus ); antenna and forewing of T. dorchinae can be separated from T. pronomus by the characters given in the key (see couplet 4 below). Male: antenna with scape 1.7 times as long as broad (3.0–3.5 times as long as broad in T. pronomus ).

Graham (1991) and Bouček (1988) used the position of the digiti relative to the aedeagus as a diagnostic character. In the material at hand, 9 of the 18 examined males have the digiti parallel to the aedeagus 4 at a 45 angle, 3 at a 90 angle and 2 the digiti recurved. The position of the digiti relative to the aedeagus is, hence, variable reflecting an artefact of preservation.

Figures

FIGURES 17 – 22. Tamarixia dorchinae sp. nov. 17. Habitus, female. 18. Habitus, male. 19. Left antenna, female. 20. Left forewing, female. 21. Right antenna, male. 22. Left forewing, male.