Dryinus tamaricicola Rakhshani & Olmi

Derafshan, Hossein Ali, Rakhshani, Ehsan & Olmi, Massimo, 2016, A review of the genus Dryinus Latreille, 1804 (Hymenoptera, Chrysidoidea, Dryinidae) from Iran, with description of a new species, Zootaxa 4117 (3), pp. 411-420 : 412-415

Dryinus tamaricicola Rakhshani & Olmi sp. nov.

( Figs 1 , 2 B, 3)

Material examined. Holotype, ♀, IRAN: Sistan and Baluchestan Prov., Zabol County, Zabol, 31°09'03.5"N, 61°20'47.04"E, 477 m, 30.IV.2015, swept on Tamarix stricta, Nim 61, H.A. Derafshan leg. ( MOLC). Paratypes: same locality as holotype, 31°09'03.5"N, 61°22'46.8"E, 450 m, 15.V.2015, Nim84, 2♀♀ ( MOLC); same locality, 31°09'03.5"N, 61°20'47.04" E, 477 m, 15.V.2015, swept on Tamarix stricta, Nim 86, 1♀ ( MOLC); same locality, 31°11'34.1"N, 61°22'41.6"E, 480 m, 15.V.2015, swept on Tamarix stricta, Nim 85, 1♀ ( MOLC); same locality, 31°09'23.7"N, 61°23'57.9"E, 450 m, 15.V.2015, swept on Tamarix aphylla, Nim 87, 1♀ ( MOLC); same locality, 31°09'03.5"N, 61°20'47.04"E, 477 m, 29.IV.2015, swept on Tamarix stricta, Nim 57, 1♀ ( MOLC), 1♀ ( DPPZ), H.A. Derafshan leg.

Description. Female ( Fig. 3 ). Fully winged; body length 4.1–4.2 mm (holotype 4.1 mm). Antenna clavate, ratios of antennal segments 9:4:24:13:11:10:7:7:6:6. Rhinaria lacking on antennal segments. Head ( Figs 1 A–B, D) dull, slightly granulated and sculptured by many subparallel longitudinal striae; frontal line (Fig. A) incomplete, present in posterior half of face; occiput and temple shiny, unsculptured; occipital carina incomplete, present only behind ocellar triangle ( Fig. 1 D); posterior ocelli touching occipital carina; POL=4; OL=4; OOL=8; TL=1; greatest breadth of posterior ocelli shorter than OL (3:4); greatest breadth of anterior ocellus about as long as OL. Pronotum ( Fig. 1 D) shiny, unsculptured, crossed by slight anterior furrow and with disc humped; pronotal tubercle not reaching tegula ( Fig. 1 F). Scutum ( Fig. 1 C) dull, hairy, strongly reticulate rugose. Notauli absent. Scutellum reticulate rugose, with areolae much smaller than those of scutum and metanotum. Metanotum reticulate rugose. Propodeum ( Fig. 1 C) reticulate rugose, with two short incomplete longitudinal keels on posterior surface. Fore wing ( Fig. 1 H) with two dark transverse bands on basal cells and beneath pterostigma; distal part of stigmal vein about as long as proximal part. Ratios of protarsomeres 14:3:7:12:23. Enlarged claw ( Figs. 1 G, 2B) not spatulate, without teeth, with one row of 6–7 proximal and medial lamellae (6 in holotype) and group of 4–6 distal lamellae (4 in holotype). Protarsomere 5 ( Fig. 2 B) with one short row of 6 lamellae; distal apex with at least 19 lamellae. Rudimentary claw longer than arolium. Tibial spurs 1/1/1. Coloration. Head ferruginous; antenna ferruginous, except segments 7–10 darkened; prothorax ferruginous; rest of mesosoma black; petiole black; metasoma brown, except first segment testaceous; legs testaceous, except inner side of metafemur club, distal half of metatibia and part of metatarsus brown.

Distribution. Iran.

Hosts. Unknown.

Etymology. The species is named after Tamarix , the plant on which it was collected.

Remarks. The female of Dryinus tamaricicola sp. nov. has no rhinaria on antennal segments and it seems a unique case among all known Dryinus species. The new species belongs to Dryinus group 3, according to the classification of Xu et al. (2013), Olmi & Virla (2014) and Olmi & Xu (2015). Dryinus tamaricicola sp. nov. is close to D. balearicus Olmi, 1987 ; D. gharaeii Olmi, 2005 ; D. ibericus ( Olmi, 1990) ; D. sanderi Olmi, 1984 and D. tigarae Olmi, 2008 . Following the description of D. tamaricicola sp. nov., the final part (couplets 9–15) of the key to the females of Western Palaearctic species of Dryinus ( Olmi 1999) , partly modified by Olmi (2005) and valid also for Eastern Palaearctic species should be replaced by the following couplets:

9. Enlarged claw with one row of proximal and medial lamellae (Figs 167, 169, 170 in Olmi 1999; Fig. 2 B)............... 10 - Enlarged claw with one or more small lamellae situated near distal apex (Figs 159, 160, 162, 165, 293 in Olmi 1999)..... 1 5 10. Posterior ocelli touching occipital carina................................................ D. tamaricicola sp. nov. - Posterior ocelli not touching occipital carina.............................................................. 11 11. Enlarged claw spatulate, with long row of teeth and one long row of lamellae ( Fig. 2 A, fig. 2 in Olmi 2008; plate 26E in Olmi

& Xu 2015); protarsomere 5 with one row of very long lamellae, in addition to further rows of shorter lamellae ( Fig. 2 A, fig. 2

in Olmi 2008; plate 26E in Olmi & Xu 2015); occipital carina incomplete, not present on temple, laterally reaching eyes; rudi-

mentary claw longer than arolium ( Fig. 2 A, fig. 2 in Olmi 2008; plate 26E in Olmi & Xu 2015)..................... 12 - Enlarged claw not spatulate, with two subapical teeth and one shorter row of lamellae (Figs. 167, 169, 170 in Olmi 1999); pro-

tarsomere 5 without row of very long lamellae, with rows of lamellae approximately same length (Figs. 167, 169, 170 in Olmi

1999); occipital carina complete, laterally not reaching eyes; rudimentary claw shorter than arolium (Figs. 167, 169, 170 in

Olmi 1999)........................................................................................ 13 12. Head sculptured by irregular longitudinal keels and large punctures; head black, except mandible testaceous; mesosoma black

.................................................................................. D. gharaeii Olmi, 2005 - Head granulated; head and mesosoma testaceous............................................ D. tigarae Olmi, 2008 13. Head strongly punctate, not reticulate rugose........................................... D. balearicus Olmi, 1987 - Head more or less rugose or reticulate rugose............................................................. 14 14. Head with OOL approximately twice as long as POL; prothorax and scutum entirely or almost entirely black; body less robust

.................................................................................. D. sanderi Olmi, 1984 - Head with OOL less than twice as long as POL; prothorax and scutum almost entirely testaceous-reddish; body more robust..

................................................................................. D. ibericus ( Olmi, 1990) 15. Occipital carina complete............................................................... D. dayi ( Olmi, 1984) - Occipital carina incomplete............................................................................ 16 16. Posterior ocelli touching occipital carina.................................................. D. niger Kieffer, 1904 - Posterior ocelli not touching occipital carina............................................................... 17 17. Occipital carina laterally not reaching eyes............................................ D. gryps ( Reinhard, 1863) - Occipital carina laterally reaching eyes................................................................... 18 18. Scutum granulated, not rugose, without keels........................................... D. berlandi Bernard, 1935 - Scutum rugose, sculptured by punctures very large and similar to areolae....................... D. delvarei Olmi, 1998

Figures

FIGURE 1. Dryinus tamaricicola sp. nov., ♀, paratype. A. Face; B. Head, lateral view; C. Mesosoma, dorsal view; D. Head and pronotum, dorsal view; E. Petiole; F. Mesosoma, lateral view; G. Chela; H. Fore wing. Scale bars: 300 µm.

FIGURE 2. Chela. A. Dryinus gharaeii Olmi, holotype (from: Olmi 2005); B. D. tamaricicola sp. nov., holotype; C. D. tarraconensis Marshall, France, Orléans (from: Olmi & Xu 2015).

FIGURE 3. Dryinus tamaricicola sp. nov., ♀, paratype.