Bengalia spinifemorata

Rognes, Knut, 2011, Revision of the Bengalia spinifemorata species-group (Diptera, Calliphoridae), Zootaxa 2835, pp. 1-29: 8

publication ID

http://doi.org/ 10.5281/zenodo.277348

persistent identifier

http://treatment.plazi.org/id/1B34E672-8875-FFDA-FF35-FE1B54E74522

treatment provided by

Plazi

scientific name

Bengalia spinifemorata
status

 

Key to males of the Bengalia spinifemorata   species-group

1. ST 5 flap broad, semicircular, with a straight posterior margin, latter with a slight notch in the middle ( Fig. 59 View FIGURES 52 – 60. 52 – 59 ). Bacilliform sclerite process forming a massive hook ( Fig. 54 View FIGURES 52 – 60. 52 – 59 ). Semicircular sclerotisation apically with triangular expansion, its apical margin strongly concave ( Figs. 56–58 View FIGURES 52 – 60. 52 – 59 ). Veil process curved and distally dentate and slightly flattened ( Figs. 57, 58 View FIGURES 52 – 60. 52 – 59 )................................................................................... 6. Bengalia wangariae (Lehrer)  

- ST 5 flap shaped otherwise, with a broad, shallow or deep excavation in the hind margin. Bacilliform sclerite process much smaller. Semicircular sclerotisation apically expanded, or narrow and not apically expanded. Veil process almost straight, rounded in cross-section, and not expanded distally, or curved, distally expanded and flattened........................ 2

2. ST 5 flap with a shallow excavation in posterior margin ( Figs. 8 View FIGURES 1 – 9 , 33 View FIGURES 20 – 33 ). Bacilliform sclerite process moderate in size ( Figs. 2 View FIGURES 1 – 9 , 21 View FIGURES 20 – 33 ). Distal end of semicircular sclerotisation expanded into a triangle with a concave anterior margin ( Figs. 3, 4 View FIGURES 1 – 9 , 29, 30 View FIGURES 20 – 33 ). Distal end of veil process rounded in cross-section, not broad and flattened, sometimes with small subapical processes ( Figs. 6 View FIGURES 1 – 9 , 23–28 View FIGURES 20 – 33 ). No narrow backward extension of the hypophallic lobes, as seen in ventral view ( Figs. 6, 7 View FIGURES 1 – 9 , 31 View FIGURES 20 – 33 )....................... 3

- ST 5 flap with a deep excavation in posterior margin ( Figs. 18 View FIGURES 11 – 18 , 42 View FIGURES 35 – 42 , 50 View FIGURES 44 – 50 ). Bacilliform sclerite process forming a very low protuberance ( Figs. 12 View FIGURES 11 – 18 , 36 View FIGURES 35 – 42 , 45 View FIGURES 44 – 50 ). Distal end of semicircular sclerotisation narrow, not expanded ( Figs. 16 View FIGURES 11 – 18 , 39, 40 View FIGURES 35 – 42 , 48 View FIGURES 44 – 50 ). Distal end of veil process expanded and flattened ( Figs. 16 View FIGURES 11 – 18 , 39 View FIGURES 35 – 42 , 48 View FIGURES 44 – 50 ). Posterior half of the hypophallic lobe half as wide as the anterior part as seen in ventral view ( Figs. 40 View FIGURES 35 – 42 , 49 View FIGURES 44 – 50 )....................................................................... 4

3. Veil large and horizontal, with a few radiating ribs present, distal edge with 8–10 serrations ( Figs. 3–7 View FIGURES 1 – 9 ). Two minute cones on underside of dorsalmost part of the semicircular sclerotisation ( Figs. 3 View FIGURES 1 – 9 , upper pink arrow; 5, pink arrow)............................................................................................. 1. Bengalia akamanga (Lehrer)  

- Veil smaller and vertical, consisting of upper and lower parts, upper part with radiating ribs as seen from front ( Figs. 28, 29 View FIGURES 20 – 33 ), lower part “hanging” down in front of apex of semicircular sclerotisation ( Figs. 23, 29, 30 View FIGURES 20 – 33 ). Strongly developed, ventrally directed flat knob at the dorsalmost part of the semicircular sclerotisation ( Figs. 23, 31, 32 View FIGURES 20 – 33 , pink arrows).......................................................................................... 3. Bengalia seniorwhitei (Lehrer)  

4. ST 5 flap deeply sunk in the main part of ST 5, its hind margin at the side of the excavation, i.e., the tips of the “horns”, not reaching back to level of the hind margin of ST 5 proper ( Fig. 50 View FIGURES 44 – 50 ). Surstylus with parallel upper and lower edges in lateral view ( Fig. 45 View FIGURES 44 – 50 ), slightly concave on inside ( Fig. 46 View FIGURES 44 – 50 ). Veil relatively small, without anterior rib ( Figs. 47, 48 View FIGURES 44 – 50 ). Tip of beak at level of junction of veil and veil process in lateral view of distiphallus ( Fig. 47 View FIGURES 44 – 50 )............ 5. Bengalia spinifemorata Villeneuve  

- ST 5 flap not deeply sunk in the main part of ST 5, the hind margin at the side of the excavation, i.e., the tips of the “horns”, projecting backwards well beyond the hind margin ST 5 proper ( Figs. 18 View FIGURES 11 – 18 , 42 View FIGURES 35 – 42 ). Surstylus slightly broadening distad, with a conspicuous long and low bulge middorsally ( Figs. 12 View FIGURES 11 – 18 , 36 View FIGURES 35 – 42 ), very strongly concave on inside ( Figs. 13 View FIGURES 11 – 18 , 37 View FIGURES 35 – 42 ). Veil large, with anterior rib ( Figs. 15 View FIGURES 11 – 18 , 38 View FIGURES 35 – 42 ). Tip of beak well behind level of junction of veil and veil process ( Figs 14 View FIGURES 11 – 18 , 38 View FIGURES 35 – 42 )........................ 5

5. Excavation in hind margin of ST 5 flap V-shaped, the projections or “horns” being straight or even slightly convex on inside ( Fig. 18 View FIGURES 11 – 18 ). The dentate process of the distiphallus gradually tapering distally ( Fig. 17 View FIGURES 11 – 18 )....... 2. Bengalia racovitzai (Lehrer)  

- Excavation in hind margin of ST 5 flap U-shaped, the projections or “horns” being concave on inside ( Fig. 42 View FIGURES 35 – 42 ). The dentate process of the distiphallus narrows subapically and widens out again apically, apical area with broad pale part ventrally and distally ( Fig. 41 View FIGURES 35 – 42 )................................................................ 4. Bengalia smarti (Lehrer)  

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Diptera

Family

Calliphoridae

Genus

Bengalia