Dr. Kassai Tibor - Dr. Murai Éva szerk.: Parasitologia Hungarica 6. (Budapest, 1973)

The nematode larvae were found to predominate on the mouth parts, on the abdominal segments, especially at the coxal attachements and underneath the apical parts of the elytra. 38 nematode larvae were extracted from the 15 infested beetles. The rearing of these larvae on various artificial media showed that meat extract and potatoe scrappings media were more suitable than others for nematode growth. Adult nematode males and females appeared in the cultures in about one week.Microscopic examinations and measurements proved that the nematodes extracted belong to two species, viz: Pana- grolaimus sub

el

ongatu

s (Cobb, 1914) Thorne, 1937, and Nematoda sp? Of 197 beetles, 10 (5-08 %) specimens were found to be infested by Panagrolaimus subelongatus

, and 5 (2.53 %) beetles by Nematoda 3p ?

. Their morphological description is as follows. 1-1. Panagrolaimus subelongatus (Cobb, 1914), Thorne 1937 (Pig. 1 ) Females (n= 10): 1 = 1.023-1.188 mm^ a = 24.4-27.6; b= 6.0-6.4; c = 14.4-16.6; V = 57-58 %. Males (n = 10); L = 0.792-0.858 mm; a = 25-27.3; b = 4.4-4.7: c = 15.8-16.8. Lateral lips usually smaller than submedian one .Cheilorhabdions lightly sclerotized. Prorhabdions massive, with basal expansions. Hight of lips varying considerably in populations from widely separated areas. Corpus of esophagus cylindroid to slightly fusiform (Fig. 1A). Phasmids near beginning of terminal fourth of tail. Female adult with two well developed gonads, each consisting of an ovary, oviduct and uterus. Ovaries reflexed back (Fig. IB). Female tail 71-76 ja, with conoid to acute terminus (Fig* ID). Male tail 50-51 M* conoid with, 1 or 2 pairs of conspicuous 172