Erythraeus (Erythraeus) populi, Khanjani, Mohammad, Mirmoayedi, Ali-Naghi, Fayaz, Bahman Asali & Sharifian, Tahereh, 2012

Khanjani, Mohammad, Mirmoayedi, Ali-Naghi, Fayaz, Bahman Asali & Sharifian, Tahereh, 2012, Two new larval species of the genus Erythraeus (Erythraeus) (Acari: Erythraeidae) from Iran, Zootaxa 3479, pp. 52-68 : 54-55

Erythraeus (Erythraeus) populi sp. nov. (n=2)

( Figs. 1–16 )

Type material. Holotype and one paratype larvae from pear lace bug, Stephanitis pyri F. (Heteroptera: Tingidae ), on poplar tree, Populus nigra L. ( Salicaceae ), College of Agriculture, Bu-Ali Sina University, Hamedan (34° 47´38´N, 48° 29´04´E, altitude 1838 m a.s.l), Hamedan Province, Iran; 5 August, 2010; by M. Khanjani.

Diagnosis. Basifemora I–III with three setae, Ti I with 15 seate, palp tarsus with eight setae (including one solenidion and one eupathidion), fD 60, fV 16, NVD 76, IP 2493–2592.

Description. The measurements are given in Table 2 .

Dorsum ( Figs. 1–3 ). Prodorsal region of scutum with two pairs of barbed setae (AL and PL) and two pairs of barbed sensillae (Asens=AM and Psens=S). Both scutal setae (AL, PL) strongly barbed, length of anterolateral setae (AL) more than 1.4 times the posterolateral setae (PL) ( Fig. 2 ). Scutum almost trapezoid, medioanterior margin convex and posterior margin concave, two pairs of eyes posterolateral to scutum (first 25 (25) and second 20 (20) in diameter). Opisthosoma with 60 rather long and barbed setae ( Figs. 1–2 ). fD = 60.

Venter ( Fig. 5 ). Intercoxal area with two pairs of setae, 1a and 3a. Seta 1a 1.6 times longer than seta 3a. Opisthogaster with eight pairs of setae. fV=16.

Gnathosoma ( Figs. 4 , 6, 7 ). Infracapitulum with one pair each of subcapitular setae, Hy 33 (34) and adoral setae Or 20 (24). Palp five-segmented, femur and genu each with one barbed seta, tibia with three barbed setae and with bifurcate claw 26 (30), 31 (34) long, tarsus with eight setae including two smooth and four barbed setae, a eupathidium and a solenidion [13 (14) long] (0-0-B-B-BBB2-BBBBNNwx). Supracoxal seta 3 (4) long ( Fig. 3 ).

Legs ( Figs. 8–16 ). Legs long, especially all tibiae ( Table 2 ); femora divided into basi- and telofemora. Tarsi terminate in two lateral claws and a claw-like empodium. Chaetotaxy of leg segments as follows: coxae 1-1-1; trochanters 1-1-1; basifemora 3-3-3; telofemora 5-5-5; genua 8+1 s +1 k -8+1 k -8; tibiae 15+2 j +1k- 5+2 j -15+1 j; tarsi 27+ 2 x +1 w +1 e +1 Cp -23+ 2 x +1 w +1 Cp -24+ 1 x. Lengths of solenidia: w I 22 (24); w II 17-21 (17); e I 3-4 (4); Cp Ta I 7-8 (8); Cp Ta II 6-7 (7); j I 31 (32); j I 30 (33); j II 18 (21); j II 7-9 (8); j III 17-19 (18); k Ti I 6-8 (7); k Ge I 7 (8); k Ge II 6 (7); s I 22 (20). Coxa I with one supracoxal seta 4 (4) long ( Fig. 5 ).

Remarks. The new species belongs to the group of species with setal basifemora formula 3-3-3. It can be distinguished from those species by the unique combination of characters and measurements shown in the diagnosis, and more extensively by their measurements and setal patterns which are shown in Tables 3, 4 (see more details those tables).

Etymology. The new species is named after the genus name of host plant, Populus nigra L. ( Salicaceae ), from which was obtained holotype and paratype of this species.

Figures

FIGURES 1 – 5. Erythraeus (Erythraeus) populi sp. nov. (Larva): 1. Idiosoma, dorsal view, 2. Dorsal idiosomal seta, 3. Scutum, 4. Gnathosoma, ventral view, 5. Idiosoma, ventral view.

FIGURES 6 – 10. Erythraeus (Erythraeus) populi sp. nov. (Larva): 6. Palp, dorsal-lateral view, 7. Palp, ventral-lateral view, 8. Coxa-genu I, 9. Coxa-genu II, 10. Coxa-genu III.

FIGURES 11 – 16. Erythraeus (Erythraeus) populi sp. nov. (Larva): 11. Tibia I, 12. Tibia II, 13. Tibia III, 14. Tarsus I, 15. Tarsus II, 16. Tarsus III.

Tables

TABLE 2. Dimensions of Erythraeus (Erythraeus) populi n. sp. (n = 2)

Character	Holotype	Paratype	Character	Holotype	Paratype
L	617	635	Ta I (H)	16	15
IL	428	502	Ti I	200	199
IW	310	375	Ge I	143	145
SD	85	85	Tf I	100	97
W	144	125	Bf I	97	100
AW	51	50	Tr I	65	60
PW	104	100	Cx I	54	65
SBa	8	8	Ta II (L)	135	122
SBp	14	16	Ta II (H)	15	15
ISD	55	55	Ti II	200	200
AL	85	79	Ge II	117	121
PL	64	67	Tf II	95	98
AM	29	27	Bf II	101	94
S	75	69	Tr II	67	65
OC	51	51	Cx II	80	75
DS	60	56	Ta III (L)	155	143
PDS	48	47	Ta III (H)	14	12
1a	55	53	Ti III	287	288
1b	100	100	Ge III	147	144
2b	42	44	Tf III	119	117
3a	34	36	Bf III	123	116
3b	49	44	Tr III	53	57
PaScFed	58	49	Cx III	80	80
PaScGed	60	51	IP	2564	2521
Ta I (L)	146	135