Oligonychus camelliae, Ehara, Shôzô & Gotoh, Tetsuo, 2007

Ehara, Shôzô & Gotoh, Tetsuo, 2007, Five species of spider mites (Acari: Prostigmata: Tetranychidae) from Japan with descriptions of two new species, Zootaxa 1646, pp. 51-58 : 52-53

Oligonychus camelliae n. sp.

( Figs. 1–11 )

(Japanese name: Tsubaki-tsumehadani)

Description. FEMALE. Body reddish brown. Rostrum reaching distal portion of femur I ( Fig. 1 ). Palpus ( Fig. 2 ) with spinneret about 1.5 times as long as broad; dorsal sensillum (solenidion) fusiform. Peritreme dilated at distal end ( Fig. 4 ). Dorsal setae on idiosoma longer than distances between bases of consecutive setae; f2 about 4/5 as long as f1 ( Fig. 1 ). Dorsocentral striae transverse except for V- shaped pattern between and anterior to e1 setae ( Fig. 1 ). Genital flap with transverse striae; area immediately anterior to flap with longitudinal striae.

Numbers of setae and solenidia (in parentheses) on leg segments: coxae 2-2-1-1, trochanters 1-1-1-1, femora 8-6-2-1, genua 5-5-2-2, tibiae 7(1)-5-5-5, tarsi 11(1)+ 2 dupl.-12(1)+ 1 dupl.-8(1)-8(1). Tarsus I with 3 tactile setae and 1 solenidion proximal to proximal set of duplex setae ( Fig. 8 ); tarsus II with 3 tactile setae and 1 solenidion proximal to duplex setae ( Fig. 9 ). Empodia with 5 pairs of proximoventral hairs.

Measuremenƭs (n=₁Ο﹚∶ Iɵngɭh Οf bΟđy (incIuđing rΟSɭrum﹚ 4ɜ₁–ϭ₁4﹐ 4⁶²﹔ wiđɭh Οf bΟđy ²₉⁶– ɜϭ4﹐ ɜ²²﹔ IɵngɭhS Οf Sɵɭaɵ (mɵan SE﹚∶ V² ₉4 ₁•₁﹐ Sc₁ ₁²⁶•4 ₁•₁﹐ Sc² ₁Ο₁•7 ₁•₁﹐ c₁ ₁₁₁•₉ ₁•Ο﹐ c² ₁₁₁•⁸ ₁•ɜ﹐ cɜ ₁Ο²•ϭ ₁•Ο﹐ đ ₁ ₁₁4 •² Ο•₉﹐ đ ² ₁₁⁸ •Ο Ο•₉﹐ ɵ ₁ ₁₁ɜ •² ₁•₁﹐ ɵ ² ₁₁₉ •² ₁•₁﹐ f₁ ₁Ο4•ɜ ₁•Ο﹐ f² ⁸ϭ•⁶ Ο•⁸﹐ h₁ ϭ⁶•Ο Ο•ϭ•

MALE. Color similar to female. Palpus ( Fig. 3 ) with spinneret about twice as long as broad; dorsal sensillum fusiform. Dorsocentral striae on opisthosoma similar to female. Aedeagus with shaft rectangularly downcurved to transform distally to a very slender termination ( Figs. 5–7 ).

Numbers of setae and solenidia (in parentheses) on leg segments: coxae 2-2-1-1, trochanters 1-1-1-1, femora 8-6-2-1, genua 5-5-2-2, tibiae 7(4)-5-5-5, tarsi 11(3)+ 2 dupl.-12(1)+ 1 dupl.-8(1)-(8). Tarsus I with 3 tactile setae and 3 solenidia proximal to proximal set of duplex setae ( Fig. 10 ); tarsus II with 3 tactile setae and 1 solenidion proximal to duplex setae ( Fig. 11 ). Empodium I with 3 pairs of proximoventral hairs; empodium II with 4 or 5 pairs of proximoventral hairs; empodia III and IV with 5 pairs of proximoventral hairs.

Measuremenƭs (n=₁Ο﹚∶ Iɵngɭh Οf bΟđy (incIuđing rΟSɭrum﹚ ɜ⁸ɜ–4ɜϭ﹐ ɜ₉₉ (ɜ⁸4 ﹚﹔ wiđɭh Οf bΟđy ₁₉⁸–²ɜ7﹐ ²₁⁸ (-﹚﹔ IɵngɭhS Οf Sɵɭaɵ (mɵan SE﹚∶ V² 7₉•² Ο•₉ (⁸Ο•Ο﹚﹐ Sc₁ ₉7•⁸ ₁•4 (₉₉•ϭ﹚﹐ Sc² ⁸ϭ•Ο

Ο•₉ (⁸⁸•Ο﹚﹐ c₁ ₉Ο•Ο Ο•⁶ (⁸⁸•Ο﹚﹐ c² ₉₁•7 ₁•Ο (₉4•ϭ﹚﹐ cɜ ⁸7•² ₁•ɜ (⁸ϭ•Ο﹚﹐ đ₁ ₉Ο•ϭ ₁•₁ (⁸⁸•ϭ﹚﹐ đ² ₉4•Ο ₁•ɜ (₉Ο•Ο﹚﹐ ɵ₁ ⁸7•² ₁•₁ (⁸7•Ο﹚﹐ ɵ² ₉Ο•₁ Ο•⁸ (₉Ο•Ο﹚﹐ f₁ 74•₁ Ο•7 (7²•Ο﹚﹐ f² ϭ7•⁶ ₁•Ο (ϭ⁸•Ο﹚﹐ h₁ ɜ7•₁ Ο•⁶ (ɜ7•ϭ﹚•

Type series. Holotype male (NSMT-Ac 12444): Shinobuyama, Fukushima, Fukishima Pref., Honshu, 13 May 2000 (T. Gotoh & Y. Kitashima leg.), on Camellia japonica L. ( Theaceae ). Paratypes: 6 males (NSMT- Ac 12445-12450) & 10 females (NSMT-Ac 12451-12452), 3 males & 5 females (KUM), data same as for holotype.

Remarks. The female of the new species resembles that of a Japanese species Oligonychus ilicis (McGregor, 1917) , but differs in having the dorsal idiosomal setae not arising from tubercles, and setae f2 about 4/5 the length of f1. This species is also similar to O. letchworthi Reeves, 1963 from New York State but is reddish brown in color, while the latter is green ( Reeves, 1963).

Etymology. This species is named after the generic name of the host plant, Camellia .

Figures

FIGURES 1 – 7. Oligonychus camelliae n. sp. 1, dorsum (female); 2, distal segment of palpus (female), with other spinneret and dorsal sensillum; 3, distal segment of palpus (male), with other spinneret; 4, peritreme (female); 5 – 7, aedeagi (5, holotype).

FIGURES 8 – 11. Oligonychus camelliae n. sp. 8, tarsus and tibia I (female); 9, tarsus and tibia II (female); 10, tarsus and tibia I (male); 11, tarsus and tibia II (male).