Kaszab Zoltán (szerk.): A Magyar Természettudományi Múzeum évkönyve 63. (Budapest 1971)

Farkas, H.: Two new gall mites from Africa (Acari)

Aeeria eommeliiiac n. sp. (Fig. 2) Female 110—120 u. long, 44 p, wide, fusiform. Colour of dry specimens brown. Shield 28 p. long, 39 p. wide, in a superior view triangular, anteriorly slightly attenuating. Median line complete, admedians near each other frontally but divergent towards posterior part of shield. Lateral fields with granules instead of lines, spreading deep towards middle and extending towards front of shield. Dorsal bristles spaced only 18 p, from each other (therefore strikingly adjacent), situated on posterior margin of shield, reclinate and slightly exclinate, 30 p. long. Anterior leg 28 p. long, tibia 6 p. long, tibial seta present, tarsus 6 p, long, claw 7 p. long, almost straight, attenuating, weakly but discernibly knobbed; featherclaw relatively

—as compared to dimensions of body—large, 5-rayed. Posterior leg 24 p. long, tibia 5 p. long, tarsus 6 p. long, claw 8 p. long. Coxae ornamented with very thin lines. Abdomen with about 80 rings, placed densely against one another. Also microtubercles spaced densely, oval. Lateral bristle 35 p. long, first ventral bristle 50 p. long, second ventral bristle 30 p, long, third ventral bristle 25 p, long, situated on ring 6 counted from posterior end of body. Accessory caudal seta 5 p. long, thin, spiniform. Female genitalia 14 p. wide, 10 p. long. Coverflap with densely spaced longitudinal ribbing. Genital bristle 13 p. long. Examined material: 3 specimens. Locality: Cameroons, Africa, collected by HUBERT WINKLER, 6 August, 1903. Host: Commelina africana L. The specimens occurred on the leaf part embracing the stem. Remarks: The new species can be distinguished from its known congeners only by a character-complex and its host. The distinctive features are the small body size (110—120 p. long), the adjacent dorsal tubercles, and the granular field extending deep onto the shield. Morphologically, it resembles Aceria rosalia, but the similarity is manifestly extraneous; the dimensions of rosalia are greater, the dorsal setae longer. Fig. 1. Shield of Vasates dalbergiae n. sp. — Fig. 2. Shield of Aceria commelinae n. sp.