Famili Cucujidae

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Description
Famili Cucujidae. Cryptolestes ferrugineus (Rust red grain beetle). Tubuh kumbang pipih , dg panj . 1,5 – 4mm, berwarna coklat muda , antena filiform dg uk . Lebih panj . dibanding setengah panj . tubuh . Komoditas yg diserang : serealia , cocoa dan cowpeas. Merupakan hama sekunder
Transcript
Famili CucujidaeCryptolestes ferrugineus(Rust red grain beetle)
  • Tubuhkumbangpipih, dg panj. 1,5 – 4mm, berwarnacoklatmuda, antenafiliform dg uk. Lebihpanj. dibandingsetengahpanj. tubuh.
  • Komoditasygdiserang: serealia, cocoa dan cowpeas.
  • Merupakanhamasekunder
  • Siklushidup pd kond. optm. yaitu temp. 33 0C dan RH 70% adalah 17 – 23 hari.
  • Cryptolestes ferrugineusProstephanustruncatus
  • Identifikasi :
  • Imago berbentuk silindris. Antena terdiri atas 10 segmen (3 merupakan club). Ukuran 3 - 4 mm. Larva mirip R. dominica, tetapi segmen-segmen pd thoraks lebih besar drpd segmen abdomen.
  • Distribusi :
  • Amerika Tengah dan Amerika Selatan, Tanzania, Kenya, dan Afrika Barat.Prostephanustruncatus
  • Sejarah Hidup :
  • Hama penting pd jagung dan gaplek, juga dpt menginfestasi cowpea, cacao, kopi, gabah, dan gandum.
  • Di Nicaragua, infestasi menurunkan berat 40 % pd tongkol jagung yg disimpan selama 6 bulan.
  • Imago menggerek biji atau bahan lain, shg menghasilkan debu sisa gerekan dalam jumlah besar.
  • Telur diletakkan dlm lubang pd biji. Infestasi pd tongkol jagung jumlah telur lebih besar drpd pipilan, lama hidup imago betina lbh lama drpd jantan. Umur telur 3 hari, larva makan sisa gerekan, stadia larva 27 hari, siklus hidup antara 32 - 40 hari.
  • Famili Bruchidae
  • Bentuk Imago khasdanmudahdikenali.
  • Tubuhtertutuprambut-rambutygpendekdankompak.
  • Elytra menutupsemuatergum abdomen kecualitergum abdominal terakhir (pygidium) danantenanyarelatifpanjang.
  • Femur tungkai belakang berduri atau bergerigi
  • Ukuran imago bervariasi antara 2 - 10 mm.
  • Gejala Serangan Bean WeevilsBiological group. Oligophagous pest of leguminous. Overwintering of the Bean Weevil takes place at the stages of beetle or larva (other stages can also winter),usually in storehouses in plant residues. In some days after coupling, female lay eggs into or on ripening pods by groups (5-20).Fecundity of one female reaches 200 eggs. The eggs develop during 30-45 days. Larvae penetrate into the grains, eating the contents completely. Several larvae can develop in one grain (to 56). Larval period lasts 3-3.5 weeks. Pupation also takes place in grain (9-29 days). Life cycle of one generation takes 100-110 days. The pest arrives in the storehouse with grain where it develops until cold. Acanthoscelides obtectus SayGejala Serangan Bean WeevilsCaryedonserratus(Sinonim : Bruchus serratus (Ol.), B. gonagra (F.), C. fuscus (G.) dan C. gonagra (F.)
  • Kumbang berwarna coklat kemerahan. Ukuran panjang 4 - 7 mm. pd elytra terdpt bercak berwarna gelap yg bentuknya tdk teratur. Pygidium betina panjang dan menyempit. Antena Serrate. Elytra tdk menutup semua segmen abdomen. Femur tungkai belakang berukuran besar dg gerigi yg menyerupai sisir yg terdiri atas satu gigi berukuran besar dan 8 - 12 berukuran lebih kecil.
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