N A T U R K U N D L I C H E S á I N F O R M A T I O N S S Y S T E M

Acrolophidae sp. (Burmese amber)

(zoological nomenclature: nomen nudum, not available)

Habit:

   
Piece of amber, containing the specimen, coll. Michael Kurz : Burma, Kachin state, Hukaung Valley, Burmese amber, coll. Michael Kurz    
Picture from: Kurz Michael
Detailed view
Picture from: Kurz Michael
Detailed view
   

Description of adults: Examined: 1 . Forewing length: 2.8 mm. Head with long, erect, hair-like scales; Eyes small, semiglobular; maxillary palpi not visible; labial palpi straight, app. 0.45 mm long, 3-segmented; median segment with several obliquely distant, long bristles at distal end; distal segment roughly scaled; proboscis not visible; antennae almost 1/2 of forewing lenght; scapus inflated; flagellum relatively thick, filiform; forewings broadly rounded, costal margin in preparation partly folded; foretibia without epiphysis; spur formula probably 0-2-4, although median spurs of hindtibia in preparation not visible.

Distribution:

So far, only a single female is known from Myanmar (Burma), included in a piece of Burmese amber.

Anatomy:

     
-genitalia: Burma, Kachin state, Hukaung Valley      
Picture from: Kurz Michael
Detailed view
     

Venation. In preparation nearly invisible; in forewing, 4 R-veins reaching costa.

genitalia. Ostium roundish triangular, with broad lateral bulge; ductus bursae heavily sclerotized; distal segments of abdomen without telescospic ovipositor; ovipositor short, ending in two heavier sclerotized tips; apophyses posteriores nearly absent, apophyses anteriores very short.

Diagnosis:

The separate and well recognizable ostium bursae assigns the species to the Ditrysia without any doubt. Although the only autapomorphy of Tineoidea, a slender pair of ventral pseuapophyses in most females, ist not diagnosable in the prepartion, the distant bristles on the labial palpi are supposedly indicative of this group. These pseudapophyses are also missing in the family Acrolophidae, the latter being characterized by a complete reduction of the apohyses anteriores and the missing of a telescopic elongated ovipositor, which is quite frequent in other Tineoidea. The apophyses anteriores are very much reduced in the present preparation, like the apophyses posteriores and the ovipositor is not elongated, but altered into two short sclerotized tips. For these reasons, a tentative placement of the specimen among early forms of the Acrolophidae is considered.

Worth knowing:

Following the newest dating (Shi et al. 2012), the age of Burmese amber has been determined to be 98.79 ▒ 0.62 million years, thus the amber is from the Cenomanian age.

Sources:

Shi, G., D. A. Grimaldi, G. E. Harlow, Ji. Wang, Ju. Wang, M. Yang, W. Lei, Q. Li & X. Li 2012. Age constraint on Burmese amber based on U-Pb dating of zircons. Cretaceous Research XXX: 1-9.

Publication data:

history:
Kurz Michael: 2015.11.07
Kurz Michael: 2015.11.10
not reviewed

Advertisement: