| abstract | In the present paper are reported 9 species of the family Macrochelidae collected from Northeastern China, namely:
1. Parholaspulus alstoni Evans, 1956.
2. Parholaspulus ventricosus, sp. nov.
3. Gamasholaspis sinicus, sp. nov.
4. Macrocheles decoloratus (C. L. Koch, 1839).
5. Macrocheles glaber (Muller, 1860).
6. Macrocheles kolpakovae Bregetova et Koroleva, 1960, new record for China.
7. Macrocheles matrius (Hull, 1925).
8. Macrocheles muscaedomesticae (Scopoli, 1772).
9. Macrocheles plumiventris Hull, 1925; new record for China.
Parholaspulus ventricosus, sp. nov.
Female (Figs. 1-2):
Body elongated and oval, medium sized, 700µ long and 380µ wide.
Dorsal plate undivided, covering the bulk of dorsum, 640µ long and 380µ wide, anterior margin straight, lateral margins slightly concaved, tip rounded, bearing 30 pairs of simple setae.
Tritosternum with a pair of strongly pilose lacinae, praeendopodal plate fragmented in 4 rows, consisting of 2 pieces in the internal rows and 3 pieces in the external. Sternal plate longer than wide, anterior margin straight, the broad anterior angles toward the interval of coxa I and II, the lateral angles broad as well and toward the interval of coxa II and III, the posterior angles broadly rounded, posterior margin slightly con-caved. 3 pairs of sternal setae and 2 pairs of slit-like organs on the sternal plate. Paired metasternal plate elliptical, with a pair of setae (Mst). Genital plate broad posteriorly, with 1 pair of setae (VL1), the posterior margin slightly convexed. The ventro-anal plate broader than long, considerably pentagonal, with 4 pairs of preanal and 3 perianal setae, all these setae being simple and subequal in length. Metapodal plate small in size, band-shaped. Uncovered ventral surface with 4 pairs of simple setae. The fused podal-peritrematal plate extending posteriorly to coxae IV, but not fused with the ventro-anal plate.
Both digits of the chelicerae strongly developed and with teeth; a rod-like modified seta present, at the base of the movable digit. Leg I longer and thinner than the others. Tarsus I without claws and pulvillus. Tarsus II with one pair of strong spines apically and 4 stout modified setae subapically.
Holotype (♀) collected off the body of Myospalax psilurus in May, 1962, from Hui-Nan, Kirin Province, China.
Gamasholaspis sinicus, sp. nov.
Female (Figs. 3-5):
Large mites, elliptical, 940µ long and 720µ wide.
Dorsal plate undivided, covering almost the entire dorsum, 890µ long and 670µ wide, with a notch at the shoulder, lateral margin serrated. Dorsal setae 29 pairs, long and simple, F1 smaller than the others.
Tritosternum and prae-endopodal plates well developed. Sternal plate longer than wide, anterior margin slightly concaved, posterior margin concave, the anterior and lateral angles fused with endopodal plate, posterior angle rounded. Three pairs of simple setae and two pairs of slit-like organs on this plate. Metasternal plate free, with one pair of simple setae. Posterior margin of the genital plate straight. The ventro-anal plate very large and well ornamented, considerably triangular, the middle third of its anterior margin being slightly emarginated to receive the genital plate. 4 pairs of prae-anal and 3 perianal setae on this plate. The perianal setae shorter than the praeanal. Metapodal plate elongated and oval. Unsclerotized ventral surface with about 10 pairs of setae. The podal-peritrematal plate extending posteriorly to the anterior margin ofthe ventro-anal plate.
Both digits of chelicerae with teeth, the ventral setae plumose. The forked seta on the palpal tarsus with three tines.
Leg I elongated, without claws and pulvillus; Leg II stout and short, with one strong spine subapically.
Holotype (♀) collected off the body of Clethrionomys rufocanus in June, 1962, from Hui-Nan, Kirin Province, China. Paratypes (3♀♀) collected off the body of Clethrionomys rufocanus and Eutamias sibiricus during June-July 1960, from Hun-Chiang, Kirin Province, China. |