Microphorites hamataculeus Zhang et Wang, 2025

Zhang, Haoqiang, Han, Ye, Ren, Dong & Wang, Yongjie, 2025, Three new species of Microphorites (Diptera: Dolichopodidae sensu lato: Microphorinae) from mid-Cretaceous Burmese amber, Zootaxa 5661 (1), pp. 108-116 : 112

publication ID

https://doi.org/10.11646/zootaxa.5661.1.5

publication LSID

lsid:zoobank.org:pub:4E88703A-DA9C-4CB2-8D63-9C82CBBF6208

DOI

https://doi.org/10.5281/zenodo.16604084

persistent identifier

https://treatment.plazi.org/id/039C87FD-FF96-FFE0-3AFE-FCACFCC94B8F

treatment provided by

Plazi

scientific name

Microphorites hamataculeus Zhang et Wang
status

sp. nov.

Microphorites hamataculeus Zhang et Wang sp. nov.

urn:lsid:zoobank.org:act:404C5C3A-02CC-4B3E-A6FC-834E28087FDC

( Fig. 3 View FIGURE 3 )

Etymology. The specific epithet is derived from the combination of Latin prefix “ hamat- ” (meaning hooked) and “ aculeus ” (meaning spinose) in reference to the two stout, hooked spines on the distal end of the hind tibia.

Type material. HOLOTYPE ♂: CNU-DIB-MA-2015155.

Locality and horizon. Hukawng Valley, Kachin State, Northern Myanmar; lowermost Cenomanian, mid-Cretaceous (98.79 ± 0.62 Ma).

Diagnosis. Postpedicel subtriangular; arista-like stylus about 2 times as long as postpedicel. C ending between R 4+5 and M 1; Sc incomplete, and feeble distad. Fore and mid legs unmodified; hind tibia protruding into finger-like process distally, extending to 1/3 of tarsomere I, equipped with two apical hook-like spines.

Description. Male. Body length ca. 1.82 mm ( Fig. 3A View FIGURE 3 ). Head ( Fig. 3B View FIGURE 3 ). Eyes large, holoptic; ocellar tubercle slightly raised, with 2 long ocellar setae. Scape cylindrical, slightly longer than pedicel; pedicel subglobular, with 2 stout dorsal setae; postpedicel (0.18 mm) covered with numerous small setae; arista-like stylus two-segmented (ca. two times as long as postpedicel). Proboscis protruded, palpus rod-like, with spine-like apical seta.

Thorax ( Fig. 3A View FIGURE 3 ). Mesoscutum slightly arched; acrostichal and dorsocentral setae short and biserial, ending at one prescutellar setae; 1 postalar seta; 1 postpronotal seta; 3 long, strong notopleural setae. Scutellum subtrapezoidal, with 2 marginal setae.

Wing ( Fig. 3C, D View FIGURE 3 ). Length 1.66 mm, width 0.71 mm. C terminating at R 4+5. Sc incomplete, feeble distally. R 1 ending at approximately 2/3 length of wing; R 2+3 and R 4+5 unbranched. Crossvein r-m at 1/4 of cell dm; cell br narrow; cell bm small, subequal in length to cell cua; cell dm long and wide, emitting three veins (M 1, M 2 and M 4). M 4 approximately parallel to M 2; crossvein bm-m complete; crossvein dm-m straight; cell cua closed, rounded apically with CuA curved; crossvein m-cu short, oblique, beyond apex of cell cua. Anal lobe and alula not visible.

Legs. Fore femur with row of stout, erect dorsal setae; fore tibia with two rows of short, spine-like dorsal setae; fore tarsus with row of stout setae. Mid femur with cluster of spine-like subapical setae; mid tibia with three long, distal spine-like setae. Hind femur ( Fig. 3E View FIGURE 3 ) covered with dense irregularly long setae; tarsomere I slightly shorter than total length of tarsomeres II−V combined, with cluster of short, spine-like setae on basal third.

Abdomen. Segments 1−5 gradually narrowed, tergum and sternum with long marginal setae; sternite 6−7 with long marginal setae; sternite 8 with numerous long setae. Male terminalia ( Fig. 3F View FIGURE 3 ). Symmetrical, rotated about 45−90°; cerci terminal visible, covered with dense micro-setae; epandrium subrectangular in lateral view; surstylus perpendicular to epandrium; hypandrium long, broad at base, hypandrial prolongation curved dorsad.

Female. Unknown.

Remarks. Compared to other species of Microphorites , M. hamataculeus sp. nov. is primarily characterized by the presence of a specialized apical process on the hind tibia.

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Diptera

Family

Dolichopodidae

Genus

Microphorites

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