Crete 18. - 31. May 2008                      

 
 
žahalka obrovská - Megascolia maculata (Drury, 1773)
solitary huge wasp - Megascolia maculata (Drury, 1773)
 

Island of Crete is the largest Greek island and the fifth largest island of the Mediterranean Sea. The flora and fauna of this island is characterized by a relatively high degree of endemism, which makes it very attractive for botanists and zoologists. The island is about 254 km long from the west eastwards and from 12 to 62 km wide from north southwards. The highest mountain is Psiloritis (2456 m a. s. l.) in the Idi mountains.

Crete mainland
... olive trees, olive trees wherever you look ... quite a sad landscape for entomologist ...
 

 A massive deforestation of the island took place in the course of four thousands years of colonisation (as well as across whole Mediterranean area) so as a result of that, original forest is virtually absent there now. All fertile land has been transformed into olive tree and citrus orchards, mountain areas are used as pastures for large flocks of sheep and goats. Deforestation and intensive grazing has caused quite a significant erosion and soil degradation, the stands were replaced by trees and herbs bearing drought and grazing. Only sporadically you can find some, but probably not primordial, complexes of the indigenous trees, such as kermes oak (Quercus coccifera), cypress (Cupressus sempervirens), maple Acer sempervirens, pine Pinus brutia or endemic Zelkova abelicea. In the undergrowth you can find Spanish broom Spartium sp. or a prickly barberry Berberis cretica in higher altitudes.

 
Berberis cretica     Zelkova abelicea
Berberis cretica                                                                      Zelkova abelicea                   
 

Our two-weeks-long expedition has set itself the task to determine bionomics
and find as many endemic species of the family Cerambycidae as possible.
 
  Prinobius myardi Mulsant, 1842 ssp. proksi Sláma, 1982
  Grammoptera auricollis Mulsant et Rey, 1863  ssp. basicornis Pic, 1924    
  Paracorymbia cordigera (Füsslins, 1775) ssp. anojiaensis Sláma, 1982
  Paracorymbia martini Sláma, 1985
  Paracorymbia picticornis (Reitter, 1885)
  Anastrangalia montana (Mulsant et Rey, 1863) ssp. steineri Sama, 1994
  Pedostrangalia ariadne (K. Daniel, 1904)
  Trichoferus berberidis Sama, 1994
  Trichoferus bergeri Holzschuh, 1981
  Stenopterus creticus Sama, 1995
  Callimus angulatus (Schrank, 1789) ssp. glabrescens Holzschuh, 1989
  Purpuricenus schurmanni Sláma, 1985
  Anaglyptus praecellens Holzschuh, 1981
  Isotomus jarmilae Sláma, 1982
  Pseudosphegesthes bergeri Sláma, 1982
  Parmena slamai Sama, 1986
  Pogonocherus creticus Kratochvíl, 1985
  Pogonocherus perroudi Mulsant, 1839 ssp. brevipilosus Holzschuh, 1993
  Leiopus insulanus Sláma, 1985
  Opsilia coerulescens (Scopoli, 1763)  ssp. cretensis Breuning, 1947
  Agapanthia probsti Holzschuh, 1984
  Agapanthia cretica Bernhauer, 1978
  Agapanthia cynarae (Germar, 1817)  ssp. michaeli Sláma, 1987
 

 
Acer sempervirens    Crete
Acer sempervirens                                                                                                                          
 

 At the first day, after our arrival, we have borrowed a car (Hyundai Getz) and went into the field. Our first destination was the range of Lefka Ori in the western part of the island. We had some information about the locality where endemic species Agapanthia probsti Holzschuh, 1984 on its host plant Asphodeline lutea should occur. We have gathered endemic Opsilia coerulescens (Scopoli, 1763) ssp. cretensis Breuning, 1947 on its host plant Echium italicum, as well as a few individuals of Agapanthia cardui (Linnaeus, 1767) along the road on our way there. Finally, we have found stands of Asphodeline lutea, however the vast majority of plants have already faded and we managed to find only one adult of our desired longhorn Agapanthia probsti Holzschuh, 1984, but unfortunately in a relatively "used" condition. It was clear to us that we have arrived "too late in the field". We have found only some small larvae in the stems of Asphodeline lutea - the beginning of a new generation. We have forsaken this location and descended to the south coast of the island. The herb Asphodeline lutea was present in vast quantities here and we even managed to gather some more Agapanthia probsti adults. Host plants were completely dry and contained nearly mature larvae of this kind of longhorn there. We have cut some straws for the domestic rearing and slowly inquire about the place of lodging.
 
Asphodeline lutea  Agapanthia probsti Holzschuh, 1984  Agapanthia probsti Holzschuh, 1984
Asphodeline lutea                                                                    Agapanthia probsti Holzschuh, 1984                                   
 

The next day, we managed to find another species of longhorns along the road. We saw Purpuricenus desfontainii (Fabricius, 1792) ssp. desfontainii (Fabricius, 1792), to me already known from Peloponnese, and beside this also endemic subspecies Agapanthia cynarae (Germar, 1817) ssp. michaeli Sláma, 1987 on the thistles. We also gathered Stenopterus creticus Sama, 1995 and Stictoleptura cordigera (Füsslins, 1775) ssp. anojaensis (Sláma, 1982) on blossoming Umbelliferae plants.
 
Purpuricenus desfontainii (Fabricius, 1792) ssp. desfontainii   Purpuricenus desfontainii (Fabricius, 1792) ssp. desfontainii
Purpuricenus desfontainii (Fabricius, 1792) ssp. desfontainii (Fabricius, 1792)
 
 
Agapanthia cynarae (Germar, 1817) ssp. michaeli Sláma, 1987         Stenopterus creticus Sama, 1995        Stictoleptura cordigera (Füsslins, 1775) ssp. anojaensis (Sláma, 1982)
         Agapanthia cynarae (Germar, 1817)                     Stenopterus creticus Sama, 1995           Stictoleptura cordigera (Füsslins, 1775)
        ssp. michaeli Sláma, 1987                                                                                        ssp. anojaensis (Sláma, 1982)
 

After this "warming-up round", a time was ripe to pick up all our strength, courage and knowledge and set off towards the pivotal location - the center of mountain range Lefka Ori. Altitude of this locality is about 1,000 m a. s. l. Local residents (as almost all of villagers in Crete) live upon breeding sheep and goats. It was interesting to observe how their owners constantly transported them on the buckets of their cars from place to place.
 
sheep... everywhere...    ...and goats... absolutely everywhere...
         sheep... everywhere...                                                                      ...and goats... absolutely everywhere...

 
Surrounding slopes are covered with forests and pastures, comprising already mentioned trees: kermes oak (Quercus coccifera), maple Acer sempervirens and endemic tree Zelkova abelicea. First and foremost, we were looking forward to beating of hawthorn shrubs, where we should – besides other species - find one of the most interesting, also endemic species - Anaglyptus praecellens Holzschuh , 1981. Unfortunately, hawthorn shrubs were already loosing their blossom and beating them showed to be useless. Fortunately, we uncovered that the blossoming barberry shrubs (Berberis cretica) became the "alternate" of the hawthorn. Besides already mentioned Anaglyptus praecellens Holzschuh, 1981 we managed to find also Callimus angulatus (Schrank, 1789) ssp. glabrescens Holzschuh 1989.
 
  Lefka Ori      Berberis cretica
           Lefka Ori                                                                   Berberis cretica                        
 
Berberis cretica    Anaglyptus praecellens Holzschuh, 1981
                                  Berberis cretica                                      Anaglyptus praecellens Holzschuh, 1981
 
Anaglyptus praecellens Holzschuh, 1981    Anaglyptus praecellens Holzschuh, 1981
Anaglyptus praecellens Holzschuh, 1981
 
 

These barberry shrubs, inter alia, also serve as a host plants of a rare and endemic species - Trichoferus berberidis Sam, 1994. Its larvae are evolving in its dry, dying, but also fully live branches. Acquisition of larvae from these very prickly bushes is only for hellbent men with resolution and cost us a lot of scratches and even drops of blood.
 
Trichoferus berberidis Sama, 1994
Trichoferus berberidis Sama, 1994
 

 
Collecting of dry and detached branches of maple Acer sempervirens which concealed larvae, pupae and even developed adults of beautiful endemic longhorn Purpuricenus schurmanni Slama, 1985 was much more pleasant. What a delightful feeling when we broke a twig and this beautiful beetle marched into our hands...
 
Purpuricenus schurmanni Sláma, 1985
Purpuricenus schurmanni Sláma, 1985
 
Purpuricenus schurmanni Sláma, 1985
Purpuricenus schurmanni Sláma, 1985

Females of this species lay their egg into living and absolutely healthy maple branches. The average diameter of infected branches were from one to ten centimeters. Young larva girdles the bast of the branch, thus it dies. This freshly died branch serves as a food substrate for the larva. During the first year larva creates a tunnel into a side, thinner twig. Then it goes back to the main, axial branch, finishes the girdle, completely interrupts the wood, thus the branch falls off. After first winter the larva finishes its development in the axis of fallen branch and prepares a pupating chamber later in the autumn. In the spring of the third year it pupates and the adult leaves the branch. On the ground below the trees, we were able to find quite a lot of these branches, some of which their inhabitants have left recently.

Acer sempervirens  Acer sempervirens
Acer sempervirens
 
  
a maple branch girdled by a larva of Purpuricenus schurmanni was easy to find
 
 
Purpuricenus schurmanni Sláma, 1985 - male
Purpuricenus schurmanni Sláma, 1985 - male
 
Purpuricenus schurmanni Sláma, 1985 - female
Purpuricenus schurmanni Sláma, 1985 - female
 
 

Additionally, on the pastures in the vicinity we managed to find a very rare and shy species Agapanthia cretica Bernhauer, 1978 on its host plant - Asphodelus aestivus. Females were sitting on stems of flowering plants, whilst males were flying from one plant to another in the hot weather.
 
Asphodelus aestivus   Agapanthia cretica Bernhauer, 1978
Asphodelus aestivus                            Agapanthia cretica Bernhauer, 1978
 

 
In one of the other days we have launched to a nearby locality, almost at the tops of the hills, where we have found a number of adults of already familiar rare species Agapanthia probsti Holzschuh, 1984, at this time on their another host plant - Asphodeline liburnica. These adults were freshly hatched, with intact pubescence on their elytrae.
 
Asphodeline liburnica  Asphodeline liburnica
Asphodeline liburnica
 
 
Agapanthia probsti Holzschuh, 1984
 
 
Agapanthia probsti Holzschuh, 1984
Agapanthia probsti Holzschuh, 1984
 

In the southern part of the island, there are growths of Ceratonia siliqua and in its dead branches we managed to find larvae of huge and impressive longhorn beetle Trichoferus bergeri Holzschuh, 1981. After two years of rearing we finally obtained beautiful adult of this rare and endemic species.
 
Trichoferus bergeri Holzschuh, 1981
Trichoferus bergeri Holzschuh, 1981
 

 
From this location we were planning to move to the bank of the island. Rocks on the coast are covered with pine trees (Pinus brutia). Its dry
twigs serve for development of longhorns of genus Pogonocherus. We cut a few branches and twigs for home-rearing.
 
Pinus brutia
 
Later in September, a very rare and endemic Cerambycid Pogonocherus creticus Kratochvíl, 1985
hatched from dead branch of the pine tree.
 
Pogonocherus creticus Kratochvíl, 1985
Pogonocherus creticus Kratochvíl, 1985
 
Pogonocherus creticus Kratochvíl, 1985
Pogonocherus creticus Kratochvíl, 1985
 

 
On the way we stopped at the locality we collected dry twigs of oleander (Nerium oleander), which contained developmental stages and also the adults of Parmena slamai Sama, 1986. We also found several larvae of Deroplia troberti (Mulsant, 1843) ssp. cruciata Sama, 1996. At the foot parts of the bushes we have discovered huge quantities of pupae and imature adults of Xylotrechus stebbingi Gahan, 1906. This species originates from northern India and Nepal, but it was spread by a man into several places of the Mediterranean a few years ago, where it thrives very well and expands to other areas. On flowers we have observed a relatively great number of endemic species Paracorymbia picticornis (Reitter, 1885).
 
 
                           Nerium oleander                                                                      Parmena slamai Sama, 1986
 

 
Deroplia troberti (Mulsant, 1843) ssp. cruciata Sama, 1996
Deroplia troberti (Mulsant, 1843) ssp. cruciata Sama, 1996

 
Deroplia troberti (Mulsant, 1843) ssp. cruciata Sama, 1996      Deroplia troberti (Mulsant, 1843) ssp. cruciata Sama, 1996
Deroplia troberti (Mulsant, 1843) ssp. cruciata Sama, 1996
 

 
                    Xylotrechus stebbingi Gahan, 1906
Deroplia troberti (Mulsant, 1843) ssp. cruciata Sama, 1996                 Xylotrechus stebbingi Gahan, 1906        
 
 Xylotrechus stebbingi Gahan, 1906
 Xylotrechus stebbingi Gahan, 1906
 

 
Paracorymbia picticornis (Reitter, 1885)   Paracorymbia picticornis (Reitter, 1885)
Paracorymbia picticornis (Reitter, 1885)
 

 Penichroa fasciata (Stephens, 1831) was another interesting species we were able to rear from dead branches and stumps. This species is quite common in whole Mediterranean area and it is polyphagous on various broadleaved trees.
 
Penichroa fasciata (Stephens, 1831)
 
Penichroa fasciata (Stephens, 1831)
 

South slopes of Idi mountains were another major pivotal destination to us. Here one can find remnants of kermes oak (Quercus coccifera) growths. These growths are also used for grazing and the oak shrubs are frequently trimmed by shepherds - probably for fuel. Stumps and stubs are perfect substrate for xylophagous bugs, longhorns included.

 
Lefka Ori   fences, fences everywhere...
range Lefka Ori                                                                                   ..fences, fences everywhere...
 
Beautiful longhorns as Isotomus jarmilae Sláma, 1982, Chlorophorus aegyptiacus (Fabricius, 1775) and Pseudosphegesthes bergeri Sláma, 1982 develope in these dead parts of oak trees. We have found several pupae and even imature adults of impressive longhorn species Isotomus jarmilae Sláma, 1982 there.
 
 Isotomus jarmilae Sláma, 1982 - ucpaný výlet. otvor    Isotomus jarmilae Sláma, 1982 - kukla
Isotomus jarmilae Sláma, 1982 - prepared exit hole with a plugging ... and inside this chamber a pupa...
 
 
Isotomus jarmilae Sláma, 1982
...and beatuful longhorn beetle afer a few days of inpatience waiting ...
 
Isotomus jarmilae Sláma, 1982  Isotomus jarmilae Sláma, 1982
Isotomus jarmilae Sláma, 1982
 

 
Chlorophorus aegyptiacus (Fabricius, 1775)    Chlorophorus aegyptiacus (Fabricius, 1775)
Chlorophorus aegyptiacus (Fabricius, 1775)
 

 
We also managed to discover latter of them - Pseudosphegesthes bergeri Sláma 1982 - at the end of our expedition, in oak forests on the northern slopes of mountain range Lefka Ori. We have found prepupae, pupae and imature adults of this very rare species.
 
Pseudosphegesthes bergeri Sláma 1982  Pseudosphegesthes bergeri Sláma 1982
                 ..male with a dense pubescence..                                          ..coloration of a female is a bit plainer..   
         
Pseudosphegesthes bergeri Sláma 1982 - male
Pseudosphegesthes bergeri Sláma 1982 - male
 
We must mention, that the dry oak wood reached the top levels on a scale of hardness and our axes reflected naughty from the stubs, as one of members of the expedition could convince on his own skin and bone.
 

After fourteen days, we were happy to note that our expedition was very successful, we managed to find a large number of adults and big amount of dead wood with developmental stages of endemic longhorn beetles, which was the task we have set for ourselves.
 
See you Crete.... or rather farewell ..

 


 

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