中国镰螯螨科一新属三新种(蜱螨亚纲:辐螨亚目)

描述了一新属:拟小前线螨属Pseudo pronematulus gen.nov.,三新种:针拟小前线螨Pseudo pronematulus acus sp.nov.、亮小镰螯螨Microtydeus hylinus sp.nov.和似原镰螯螨Primotydeus similis sp.nov.

A New Genus and Three New Species of Tydeidae (Acari: Actinedida) From China

A new genus and three new species of Tydeidae are described in this paper. All specimens were collected from stored foods. The length unit is micron. Type specimens are deposited in Dept. of Plant Protection, Southwest Agricultural University. 1. Pseudopronematulus gen. nov. Diagnosis: Propodosoma with one pair of setose trichobotheria and 3 pairs of simple dorsal setae. Hysterosoma with 10 pairs of dorsal setae. Venter with 4 pairs of paragenital setae, without eugenital and genital setae. Legs chaetotaxy (Ⅰ-Ⅳ) : trochanters, 1-1-1-0; femora, 3-3-2-1 / 1; genua, 3-3-2-1; tibiae, 4, lsol-2-2-2; tarsi, 8, lsol-7, lsol-6-6. Apotele Ⅰ absent. Femora Ⅳ divided into two parts. Type species: Pseudopronematulus acus sp. nov. Characteristics distinguishing this new genus from Pronematulus Baker, 1965 are as follows: genu Ⅱ bears 3 setae; femur Ⅳ are divided into two parts. 2. Pseudopronematulus acus sp. nov. (Fig. 1) This species can be easily recognized by the following characters: interspace between setae d_3 much wider than that between setae d_2, and three times of it between d_4. ω extends the tip of tarsus I. Holotype ♀, from dried Auricularia auricula-judae, Hechuan county, 1990-02-17; Paratypes: 3 ♀♀, dat(?) same as for holotype; 2 ♀♀, from dried A auricula-judae, Chongqing, 1989-10-17; 2 ♀♀, from dried A. auricula-judae, Chongqing, 1989-11-09; 1 ♀, from dried A. auricula—judae, Chongqing, 1990-01-15. All by Fan Qinghai. 3. Microtydeus hylinus sp. nov. (Fig. 2) This new species resembles Microtydeus beltrani Baker, 1944, but can be distinguished by: dorsal setae d_4 are long and reach to the base of d_5; genital seta g_1 is in a longitude line with paragenital setae pg_1 and pg_2. Holotype ♀, from dried Auricularia auricula-judae, Chongqing city, 1990-01-15. Paratypes: 1 ♀, from the bulb of garlic, Chongqing, 1989-12-31; 1 ♀, from the bulb of garlic, Chongqing, 1990-01-03; 1 ♀, from the bulb of garlic, Chongqing, 1990-01-15; 1 ♀, from lily, Chongqing, 1990-01—21; 1 ♀, from dried Auricularia auricula-judae, Jiangjin County, 1990-05-24. All were collected by Fan Qinghai. 4. Primotydeus similis sp. nov. (Fig. 3) This species can be distinguished from the only known species of the genus, Primotydeus strandtmanni Andre, 1980 by: hysterosomal setae d_1, d_2and d_3 are long, about half way of their interspaces; l_4 extends the base of l_5; solenidia ω of tarsi I spin-shaped. Holotype ♀, Paratypes: 2 ♀♀, 1 deutonymph, from dried walnuts, Chongqing, 1990-01-09. Fan Qinghai collected.