Gonatopus opsiicida Rakhshani & Olmi 2020, sp. nov.
Creators: name: Derafshan, Hossein Ali
name: Olmi, Massimo
name: Moghaddam, Mostafa Ghafouri
name: Rakhshani, Ehsan
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Liliopsida
Alismatales
Araceae
Gonatopus
Gonatopus opsiicida

description: Gonatopus opsiicida Rakhshani & Olmi sp. nov.   
Figs 2C, 15 A–15H, 16A–16B, 17A–16H  
 Diagnosis. Female Gonatopus opsiicida Rakhshani & Olmi sp. nov. is apterous (Figs 16 A–16B), with pronotum crossed by strong transverse furrow (Figs 15D, 16 A–16B), enlarged claw bearing single very small subapical tooth and no distal lamellae (Figs 2C, 15E). On the basis of these characters, new species belongs to group 7 Gonatopus species (Olmi & Xu 2015). The key to females of group 7 is provided by Olmi (1999) for the Western Palaearctic region and by Olmi & Xu (2015) for the Eastern Palaearctic region.   
 Description (♀). Apterous (Figs 16 A–16B), body length 2.6–3.1 mm. Color. Head and mesosoma reddishbrown; antenna brown; first to third metasomal segment brown, rest dark brown to black; legs brown, except testaceous tarsi, apex of meso- and metafemur yellow. In some specimens from Zabol (Nim-176, Nim-75), body in ventral view whitish; base antenna whitish and apex brown; face of head (palpi, mandibles, clypeus, frons) whitish; petiole black; second segment of metasoma yellow-brown and remaining metasomal segments brown-black; legs whitish and brown. Head (Figs 15 A–15C, 16A–16B). Antenna clavate; antennomeres in following proportions: 8:5:12:6:7:6:5:5:6:5; head flat; with frons shiny, unsculptured, except region near antennal toruli granulate and vertex area near temple striate-granulate; temple granulate; frontal line incomplete, partly effaced in posterior half of frons; occipital carina complete; POL = 2, OL = 3, OOL = 7, OPL = 2, TL = 6, greatest breadth of lateral ocelli about as long as OPL; palpal formula 6/3. Mesosoma (Figs 2C, 15 D–15F, 16A–16B). Pronotum shiny, unsculptured, crossed by strong transverse furrow; mesoscutum shiny, sculptured by few longitudinal keels, laterally with two pointed apophyses; mesoscutellum shiny, unsculptured, inclined; metanotum hollow behind mesoscutellum and with long setae; metapectal-propodeal complex fusiform, with sides rounded, metapostnotum shiny, unsculptured and with sparse setae, first abdominal tergum transversely striate; disc metapectal-propodeal complex with deep median longitudinal furrow; mesopleuron and metapleuron shiny, unsculptured; procoxa approximately 1.5–2.0 times as long as meso- and metacoxa; protarsomeres in following proportions: 13:3:5:13:19; enlarged claw with one very small subapical tooth, 2 proximal setae and without lamellae; protarsomere 5 with serrated proximal region, with two rows of 2–3 (proximal) + 17–18 lamellae; distal apex with 9–10 lamellae, one of which very long; rudimentary claw about as long as arolium and almost 0.3 × wider than long; tibial spurs 1/0/1. Metasoma (Figs 15 G–15H). Terga covered with the sparse setae, black, shiny, unsculptured. Male. Unknown.   
 Etymology. The species named after its potential host leafhopper, Opsius versicolor (Distant 1908), which was always found on the same host plant.   
 Material examined. Holotype. ♀ (DAFNE), IRAN, Sistan-o Baluchestan province, Zabol- Hamoon international wetlands (31°12ʹ03.2ʺN, 61°20ʹ47.04ʺ E, 477m), 05.IV.2016, Nim-172, swept on Tamarix stricta, Leg.: H. A. Derafshan. Paratypes. 3 ♀ (2 ♀ in MOLC, 1 ♀ in DPPZ), IRAN, Sistan-o Baluchestan province, Zabol- Hamoon international wetlands (31°12ʹ03.2N, 61°20ʹ47.04ʺE, 477m), 05.IV.2016, Nim-172, swept on T. stricta, Leg.: H. A. Derafshan; 4 ♀ (DPPZ), same locality label, 03.IV.2016, Nim-166; 1 ♀ (DPPZ), same locality label, 20.IV.2016, Nim-182; 1 ♀ (DPPZ), same locality label, 25.VIII.2016, Nim-237; 1 ♀ (DPPZ), same locality label, 20.IX.2016, Nim-243; 1 ♀ (MOLC) and 1 ♀ (DPPZ), IRAN, Sistan-o Baluchestan province, Zabol-Hamoon international wetlands (31°11ʹ34.1ʺN, 61°22ʹ41.6ʺE, 480m), 15. V.2015, Nim-85; swept on T. stricta; 4 ♀ (1 ♀ in MOLC, 3 ♀ in DPPZ), IRAN, Sistan-o Baluchestan province, Zabol (30°55ʹ08ʺ N, 61°31ʹ32ʺ E, 470m), 14.IV.2016, Nim-176, swept on T. stricta; 1 ♀ (DPPZ), IRAN, Sistan-o Baluchestan province, Zabol (30°55ʹ08ʺ N, 61°31ʹ32ʺ E, 470m) 13. V.2015, Nim-75, swept on T. stricta; 1 ♀ (MOLC), IRAN, Sistan-o Baluchestan province, Zabol (30°50ʹ47ʺ N, 61°43ʹ02.1ʺ E, 499m), 12. V.2016, Nim-204, swept on T. stricta; 1 ♀ (DPPZ), IRAN, Sistan-o Baluchestan province, Zabol-Nimrooz (31°05ʹ02ʺ N, 61°26ʺ07ʺ E, 461m), 05. VI.2016, Nim-228, swept on Weeds, 1 ♀ (MOLC), same locality label, 15. VI.2016, Nim-233.   
 Distribution (Fig. 23A). Iran (South-East).   
 Remarks. The new species is similar to G. albolineatus Kieffer, 1905 (in Kieffer & Marshall 1905), on the basis of its flat head (Figs 15A, 15C), testaceous-reddish metathorax + propodeum and a strong medio- longitudinal furrow (Figs 15D, 15F), the first segment of protarsus as long as fourth segment, the fifth segment of protarsus with two rows of 2–3 (proximal) + 17–18 lamellae (Figs 2C, 15E). Gonatopus albolineatus is a Western Palaearctic species very common on Tamarix, on which it parasitizes species of Opsius. Gonatopus opsiicida Rakhshani & Olmi sp. nov. can be distinguished from G. albolineatus by having a complete occipital carina (absent or incomplete in G. albolineatus), the enlarged claw bearing a rudimentary claw about as long as arolium [much shorter than arolium in G. albolineatus (Fig. 1053 in Olmi 1984)].
description: Published as part of Derafshan, Hossein Ali, Olmi, Massimo, Moghaddam, Mostafa Ghafouri & Rakhshani, Ehsan, 2020, Taxonomy of Iranian Gonatopodinae (Hymenoptera, Dryinidae), with description of a new species, pp. 371-402 in Zootaxa 4789 (2) on pages 387-394, DOI: 10.11646/zootaxa.4789.2.3, http://zenodo.org/record/3887658