One new species, Bactrocera (Zeugodacus) anala Chen et Zhou, sp.nov, and one newly recorded species, B. (Z.) armillata (Hering, 1938), from China are described and illustrated. The male of B. (Z.) armillata (Hering) was discovered for the first time and as a result the species is moved from subgenus Bactrocera to subgenus Zeugodacus. In addition, the morphological differences and comparing illu...

BACKGROUND Diptera have an extraordinary variety of sex determination mechanisms, and Drosophila melanogaster is the paradigm for this group. However, the Drosophila sex determination pathway is only partially conserved and the family Tephritidae affords an interesting example. The tephritid Y chromosome is postulated to be necessary to determine male development. Characterization of Y sequence...

One new species of the genus Bactrocera Macquart (Diptera,Tephritidae), B (B.) paradiospyri Chen, Zhou et Li, sp. nov. and one new record species, B (Z.) incisa (Walker, 1861), of this genus from China are described and illustrated. The examined specimens attracted to Cue lure. The type is deposited in Institute of Zoology, Chinese Academy of Sciences, Beijing (IZCAS).

The gene doublesex (dsx) is considered to be under strong selective constraint along its evolutionary history because of its central role in somatic sex differentiation in insects. However, previous studies of dsx used global estimates of evolutionary rates to investigate its molecular evolution, which potentially miss signals of adaptive changes in generally conserved genes. In this work, we i...

Two new species of the subfamily Trypetinae, Acidoxantha galibeedu David & Ramani, sp. nov. (tribe Nitrariomyiini) and Philophylla lachung Singh & David, sp. nov. (tribe Trypetini) are described from India. Acidoxantha totoflava is documented as new record from India. Keys to the species of known Acidoxantha Hendel and Indian Philophylla Rondani are provided.

Previous morphometric studies based on linear measurements of female structures of the aculeus, mesonotum, and wing revealed the existence of seven morphotypes within the Anastrepha fraterculus cryptic species complex along the Neotropical Region. The current research followed linear and geometric morphometric approaches in 40 population samples of the nominal species Anastrepha fraterculus (Wi...

anastrepha bezzii (diptera: tephritidae) larvae are common inside fruits of sterculia chicha (malvaceae) in minas gerais state, brazil. the seed dormancy and attack by a. bezzii of the native species s.chicha can be detrimental to seed germination and thus the natural spread of this plant. the objectives of the current study were to compare ecological observations of a. bezzii and s. chicha in ...