Gyraulus parvus (Mollusca: Gastropoda) in the Czech Republic

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Figs 1–10. Harpalus (Harpalus) atratus Latreille. First instar larva: 1 – head capsule (dorsal view). 2 – nasale. 3 –mandible. 4 – maxilla. 5 – labium. 6 – first leg. Third instar larva: 7 – nasale. 8 – antenna. 9 – mandible. 10 –urogomphi. Scales: 1 mm (Figs 1, 10), 0.5 mm (Figs 3, 4, 5, 6, 8, 9), 0.2 mm (Figs 2, 7).101
and TE10, 2–3 small setae on lateral margin; 4 long and many small secondary setae on surface ofurogomphi, length of URβ 0.65 times that of UR4, URγ about as long as UR4.HEAD AND NASALE (Fig. 7) similar as in L1, nasale more prominent, lateral teeth larger; cervicalgrooves reaching the level of PA5; coronal suture longer than antennomere II; seta PA4 as long asantennomere II or III; setae PA1,2,3very small; antenna (Fig. 8); mandible with only one extra tooth(Fig. 9).THORAX. Claws unequal as in first instar.ABDOMEN. Urogomphi (Fig. 10) long and subparallel, twice as long as width of tergum IX, distinctlylonger than anal tube.Harpalus (Harpalus) cisteloides hurkai Divoký, Pulpán et Rébl, 1990(Figs 11–19)First instarHABITUS AND COLOR. Body yellow white, head and pronotum pale brown, retinaculum and apex ofmandible dark brown. Width of head capsule 1.14–1.20 mm (x = 1.16 mm, n = 5).MICROSCULPTURE. Isodiametric microsculpture on frontale and parietale, granulated microsculptureon prescutum and postscutum of pronotum and on postscutum of mesonotum, pointed microsculptureon metanotum and on abdominal terga.CHAETOTAXY. Excepting ancestral chaetotaxy one additional seta on dorso-lateral surface of prementumand 4 pairs of additional spines on anterior femora; seta PA4 slightly longer than coronalsuture, as long as antennomere IV and distinctly longer than setae PA1 – PA3; the majority of setaeon frontale, except FR2, relatively short, especially setae FR8,9 and one additional neighbouringseta; group gMX consists of 4–5 thicker and more than 50 thinner, long setae.HEAD (Fig. 11) distinctly transverse (index width/length 1.3); nasale (Fig. 12) protruding, withtriangular central incision and with 5–6 teeth on each side, two lateral only a little larger, ventral rowconsists of 18–22 teeth, adnasalia moderately sloping; cervical grooves clearly bent, almost reachingthe level between setae PA7 and PA4 on dorsal side, don’t reaching the level of seta PA16 onventral side; coronal suture distinctly longer than width of antennomere I; egg burster consists of2 smaller teeth on the level of seta PA4 on each side. Antennae slightly longer than mandibles;mandible (Fig. 13) strongly curved and robust, twice as long as basal width, with only a slightswelling in front of retinaculum, penicillus present; maxillae (Fig. 14) slender, stipes almost 3.5times as long as wide; labium (Fig. 15) rather short, with slender labial palpi; ligula reaching thelevel of one third of palpomere I and distinctly bifid apically.THORAX. Pronotum transverse, wider than head, with very distinct notal carina, reaching the levelof seta PR2; legs normally developed, claws unequal, anterior twice as long as posterior in the firstpair.ABDOMEN. Urogomphi parallel and longer than width of tergum IX, with ancestral setae as long asurogomphi; anal tube long and slender, reaching the level between setae UR5 and UR6.Second and third instarsSame character states as in the first instar except for following:HABITUS. Width of head capsule 1.38–1.57 mm (x = 1.50 mm, n = 5) in the second and 1.84–1.98 mm(x = 1.90 mm, n = 6) in the third instar.MICROSCULPTURE. Granulated microsculpture also on postscuta of metanotum and abdominal terga,pointed microsculpture on urogomphi.CHAETOTAXY. Head: 2 additional setae on inner side of antennomere I, 4–6 setae on inner side ofantennomere II, 2–3 setae on outer side of stipes, 2 setae near base of mandible, 2–3 setae near102
Page 2: Acta Soc. Zool. Bohem. 66: 81-84, 2
Page 5 and 6: REFERENCESBERAN L. & HORSÁK M. 199
Page 7: Tab. 1. Nematodes studied with the
Page 10: Tab. 2. The dimensions (mm) of thir
Page 14 and 15: Family Acuariidae Railliet, Henry e
Page 16 and 17: Fig. 7. Cosmocephalus obvelatus (Cr
Page 18 and 19: A c k n o w l e d g e m e n t sThe
Page 20 and 21: Acta Soc. Zool. Bohem. 66: 99-119,
Page 24 and 25: Figs 11-19. Harpalus (Harpalus) cis
Page 26 and 27: Figs 20-27. Harpalus (Harpalus) lut
Page 28 and 29: Figs 28-35. Harpalus (Harpalus) pic
Page 30 and 31: Figs 36-44. Harpalus (Harpalus) sax
Page 32 and 33: Figs 45-53. Harpalus (Harpalus) ser
Page 34 and 35: Figs 54-61. Harpalus (Harpalus) sol
Page 36 and 37: Figs 62-70. Harpalus (Harpalus) xan
Page 38 and 39: Based on the study of our larval ma
Page 40 and 41: EMDEN F. I. van 1942: A key to the
Page 44 and 45: and D. papillifera (Fuhrmann, 1908)
Page 46 and 47: about 1 mm) with only a few eggs in
Page 48 and 49: The number of catfish examined each
Page 50 and 51: number (3.65) of trematodes with ma
Page 52 and 53: cestode was distinctly associated w
Page 54 and 55: from individual months. Tab. 2 show
Page 56 and 57: number (5.57) of males occurred in
Page 58 and 59: intermediate host, copepod, catfish
Page 60 and 61: CHUBB J. C. 1982: Seasonal occurren
Page 64 and 65: efore distal angle of discoidal tri
Page 66 and 67: cells between them and IR2 or MA”
Page 68 and 69: character is less pronounced in Oli
Page 70 and 71: REFERENCESBACHMAYER F. 1952: Fossil
Page 72 and 73:
Acta Soc. Zool. Bohem. 66: 151-160,
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elow) and a 170×90×70 type was us
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the brood, first into heaps near th
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trophallaxis until the termination
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4. The queen that was accepted was
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Gyraulus parvus (Mollusca: Gastropoda) in the Czech Republic

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