two new species of the genus papillacarus from egypt (acarina, cryptostigmata, lohmanniidae)

Dtsch. Ent. Z., N. F. 24, Heft IV-V, Seite 367-369 (1977)

Two new species of the genus Papillacarus from Egypt (Acarina, Cryptostigmata, Lohmanniidae)

BY E. A. ELBADRY and A. K. NASR

With 3 Fig. in the text

The cryptostigmatid family Lohmanniidae is represented in Egypt by two genera, Torpucarus GRANDJEAN and Pupillucarus KUNST. The family was reviewed and many species were described by several authors (GRANDJEAN 1950, BALOGH 1961 and WALLWORK 1962).

The present study includes two new species of the genus Papillacarus collected from culti- vated soil in Egypt. Holotypes were deposited in the Entomological Society of Egypt.

Key to Egyptian species *

* Dorsum smooth with a narrowly lanceolate setae, notogaster with transverse bands separating its segments. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vitis Dorsum with leaf-like dorsoccntrally and sublaterally, narrowly lanceolate setae laterally; posterior exo-pseudostigmatic seta chamberlike; notogaster with a transverse intermittent bands of area porosoae. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . egpticus

Papillacarus vitis n. sp. (Figs. 1-2)

Diagnosis : This species is characterized by having an oval body; prodorsum with x-shaped groove medially ; both prodorsum and notogaster lack network reticulation; genital setae simple.

Descr ipt ion : Body oval; colour yellow, when alive. Prodorsum triangular with x-shaped grove medially between lamellar and interlamellar setae ; rostral, lamellar, inter- lamellar, anterior and posterior exo-pseudostigmatic setae subequal narrowally lanceolate, coarsly bi-serrated except lamellar setae which are uni-serrate ; pseudostigmatic organ with a short and subequal branches.

Notogaster elliptical and have a progressive number of setal pattern as it bears 22 pairs of setae, dorso-lateral setae uni-serrate, the posterior setae ps,, ps, and ps, serrate; the rest of dorsal body setae are coarsly bi-serrate; traces of bands separating segment (c) and (d), (d) and (e), (e) and (0 can be seen.

Ventrally, infracaptiulum with seta (a) lanceolate and biserrate, setae (m,), (m2), (m,), (m& (m5) and (h) branched ; coxisternal setal formula (6-3-3-3), branched. Apodeme I and I1 obvious and transecting the body; genital and anal opening contiguous surrounded by a narrow elongated plate; genital plate nearly quadrate, and divided by transverse suture into two subequal regions, the anterior part bears five pairs, while the posteriar one bears three pairs, all the geni tal setae small and simple; two pairs of narrowally lanceolate and finely serrate anal setae; four pairs of narrowly lanceolate para-anal setae; a small elongate

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Fig. 1. PupiNicurus vitis, dorsal view Fig. 2. Papillicurus vitis, ventral view

fissure (ia) situated anterior and laterad to coxa 111, two oblique anal elongate fissures (ip) and (ih) situated laterad to the anal opening, the former shorter than the latter; three oblique bands of area prosae can be seen in the area surrounding to genitoanal region. Generally the ventral setae are unifeathered specially the pre-genital ones; a narrow longitudinal sclerotization structure situated in the area between coxa 111.

Body length 520 -535 u, width about 300 u. Holotype : El-Kanater El-Kayria, El-Kalubia Governorate, in soil where vitis sp. is grown.

Papillacarus egypticus n. sp. (Fig. 3)

Diagnosis : This species is distinctive in having large body bearing leaf-like setae finely serrate; the prodorsum with the area anterior to interlamellar setae covered with a network reticulation, posterior exopseudostigmatic setae chambered and smooth; noto- gastral bands represented by an area porosae bands; a furrow separating segment (f) and (h) present.

Descr ip t ion : Body elongate oval with a tapered anterior end. Colour brown yellowish. Prodorsum triangular covered with granulation; rostra1 setae slightly longer than lamellar setae; interlamellar and anterior exopseudostigmatic setae subequal, but shorter than the previous ones, all of these setae are leaf-like and finely serrated, posterior exopseudostigmatic setae chambered and finely serrated; Pseudostigmatic organ unipectinate with 11 - - - - 13 branches which decrease in length distally.

Notogaster ellipitical, setae C3, d,, e,, fi, h,, and h2 narrowelly lanceolate and finely

Two new species of the genus Papillacarus 369

Fig. 3. Paprllicarus egypticus, dorsal view

B WA

uni-serrated, setae C2 and Ps, broadly lanceolate and finely bi-serrate, setae C,, dl, d2, el, and f, lanceolate and finely bi-serrate; transverse incomplete bands of area porosae separating segments (C) and (d), (d) and (e), (e) and (F), can be found; an obvious furrow can be seen separating the segments (F) and (h).

Body length 1100 u, width 530 u. Holotype : Tameih, El-Fayoum Governorate in soil cultivated with Mentha piperita.

References

BALOGH, J. (1961): An outline of the family Lohmanniidae BERLESE 1916 (Acari: Oribatei). - Acta Zool. .

GRANDJEAN, F. (1950): Etude sur les Lohmanniidae (Oribtes, Acariens). - Archiv. Zool. Exp. et Generale,

WALLWORK, J. A. (1962): Some Oribatei from Ghana X. The family Lohmanniidae. - Acarologia, IV:

Hung., 7: 19-44.

87: 95-161.

458-487.

Address of the authors: Dr. ESAM A. ELBADRY and A. K. NASR Faculty of Agriculture, Ain Shams University, Shoubra Elkeima, Cairo/Egypt